0.9.6.14 bump version for adapter-safe edit actions

0.9.6.13: Nextcloud-Protokoll automatisch erkennen

.github/workflows/lint.yml

@@ -5,13 +5,8 @@ on:
   pull_request:
 
 jobs:
-  php-syntax:
-    name: PHP ${{ matrix.php }}
+  syntax:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        php: ['8.2', '8.3', '8.4', '8.5']
     steps:
       - name: Repository auschecken
         uses: actions/checkout@v4
@@ -19,7 +14,7 @@ jobs:
       - name: PHP installieren
         uses: shivammathur/setup-php@v2
         with:
-          php-version: ${{ matrix.php }}
+          php-version: '8.2'
           coverage: none
 
       - name: PHP Syntax pruefen
@@ -34,38 +29,20 @@ jobs:
         shell: bash
         run: |
           set -euo pipefail
-          python3 - <<'PY'
-          import pathlib
-          import re
-          import sys
+          duplicates="$(grep -RhoE 'function[[:space:]]+bratonien_tools_[A-Za-z0-9_]+' --include='*.php' . | awk '{print $2}' | sort | uniq -d || true)"
+          if [[ -n "$duplicates" ]]; then
+            echo "Doppelte globale Bratonien-Funktionen gefunden:" >&2
+            printf '%s\n' "$duplicates" >&2
+            exit 1
+          fi
 
-          found = {}
-          for path in pathlib.Path('.').rglob('*.php'):
-              text = path.read_text(encoding='utf-8', errors='ignore')
-              for name in re.findall(r'\bfunction\s+(bratonien_tools_[A-Za-z0-9_]+)\s*\(', text):
-                  found.setdefault(name, []).append(str(path))
-
-          duplicates = {name: paths for name, paths in found.items() if len(paths) > 1}
-          if duplicates:
-              for name, paths in sorted(duplicates.items()):
-                  print(f'{name}: {", ".join(paths)}', file=sys.stderr)
-              sys.exit(1)
-          PY
-
-  script-syntax:
-    name: JavaScript, Python, Shell
-    runs-on: ubuntu-latest
-    steps:
-      - name: Repository auschecken
-        uses: actions/checkout@v4
-
-      - name: JavaScript Syntax pruefen
+      - name: Admin JavaScript Syntax pruefen
         shell: bash
         run: |
           set -euo pipefail
-          while IFS= read -r -d '' file; do
-            node --check "$file"
-          done < <(find . -type f -name '*.js' -print0)
+          sed -n '/<script>/,/<\/script>/p' template/admin_tabs.tpl | sed '1d;$d' > /tmp/bratonien-admin-tabs.js
+          node --check /tmp/bratonien-admin-tabs.js
+          node --check js/nc_connector_edit_v2.js
 
       - name: Python Syntax pruefen
         shell: bash

CURRENT_STATUS.md

@@ -1,62 +1,139 @@
 # Aktueller Entwicklungsstand
 
-## Version
+Stand: 19.08.2026
 
-**Bratonien Tools 0.9.6.2**
+## Plugin
 
-## NC Connector
+- Aktuelle Plugin-Version: **0.9.6.1**
+- Aktueller Entwicklungsblock: **NC Connector – WebDAV-End-to-End-Pfad mit Piwigo-Registrierung, Preview-/Derivatstrecke und sauberem Verbindungs-Lebenszyklus**
+- GitHub ist das führende Repository.
+- Der bestehende lokale Connector bleibt vollständig erhalten und wird nicht automatisch migriert.
 
-Der NC Connector besitzt nur noch einen produktiven Verbindungsweg: **Nextcloud per WebDAV**.
+## Nicht verhandelbare Architekturregeln
 
-### Verbindungsmodell
+- Nextcloud bleibt die Quelle der Originalbilder.
+- Originalbilder werden **nicht dauerhaft nach Piwigo kopiert**.
+- Der bestehende lokale Produktionsweg bleibt funktionsfähig.
+- WebDAV benötigt nur Nextcloud-Adresse, Benutzer/App-Passwort und normale WebDAV-Berechtigungen des Benutzers.
+- Kein Nextcloud-PostgreSQL-Zugriff, kein `occ`, keine Storage-IDs, keine Host-Mounts, kein FUSE, davfs oder rclone als Voraussetzung.
+- WebDAV-Verbindungen werden voneinander isoliert verarbeitet.
+- Fehler der WebDAV-Bildverarbeitung dürfen keinen normalen Piwigo-Seitenaufruf zum Absturz bringen.
 
-- `adapter=remote`
-- `source_mode=webdav-placeholder`
-- Nextcloud-Adresse, Benutzer und Passwort/App-Passwort werden pro Verbindung verschlüsselt gespeichert.
-- Piwigo-API und Benutzername/Passwort-Fallback werden ebenfalls pro Verbindung gespeichert.
-- Der Assistent zeigt ausschließlich die Verzeichnisse, auf die der angemeldete Nextcloud-Benutzer per WebDAV zugreifen kann.
-- Mehrere Verzeichnisse können pro Verbindung ausgewählt werden.
+## Bestehende Quellenmodi
 
-### Laufzeit
+Weiterhin vorhanden:
 
-Der gemeinsame Runner verarbeitet ausschließlich WebDAV-Verbindungen:
+- `legacy-view`
+- `user-shares`
+- `selected-fileids`
 
-1. `runtime/reconcile-webdav.php`
-2. `runtime/cleanup-webdav-piwigo.php`
-3. `runtime/sync-webdav.sh` für jede vorhandene WebDAV-Konfiguration
+Neuer WebDAV-Modus:
 
-Die verbindungsspezifischen Runtime-Konfigurationen liegen unter `/etc/bratonien-tools/nc-connector/`. Zustandsdaten liegen unter `/var/lib/bratonien-tools/nc-connector/connection-ID`.
+- `webdav-placeholder`
 
-### Shadow Tree und Piwigo
+Es gibt keine automatische Migration bestehender Verbindungen auf WebDAV.
 
-`runtime/lib/build_webdav_placeholder_source.py` bildet die ausgewählten Nextcloud-Inhalte als lokale Platzhalterquelle ab. `runtime/lib/shadow_tree.py` erzeugt daraus die Dateisystemstruktur, die Piwigo als physische Site sieht.
+## WebDAV-Ablauf in 0.9.6.1
 
-Jede WebDAV-Verbindung besitzt ihre eigene Piwigo-Site. `runtime/lib/piwigo-sync.php` übergibt genau diese Site an `bratonien.nc.syncProductive` und `bratonien.nc.syncOrphans`. Es gibt keinen zusätzlichen Sync auf Site 1.
+1. Der Assistent prüft Nextcloud über WebDAV und lässt sichtbare Verzeichnisse auswählen.
+2. `runtime/reconcile-webdav.php` erzeugt die verbindungseigene Runtime-Konfiguration.
+3. `runtime/lib/build_webdav_placeholder_source.py` liest die ausgewählten Verzeichnisse rekursiv per PROPFIND.
+4. Ordner, Dateinamen, Nextcloud-Datei-ID, MIME-Typ, Größe, ETag und WebDAV-Pfad werden erfasst.
+5. Eine lokale Platzhalterquelle wird erzeugt, ohne Originalbilder dauerhaft zu speichern.
+6. `runtime/lib/shadow_tree.py` baut daraus den verbindungseigenen Shadow Tree.
+7. Der WebDAV-Galeriebaum liegt unter `_data/bratonien-tools/nc-webdav-gallery/connection-ID` und wird als eigene physische Piwigo-Site registriert.
+8. Dadurch erscheint die ausgewählte Nextcloud-Wurzel als normales Piwigo-Album; technische `bratonien-webdav-ID`-Wrapper werden nicht angezeigt.
+9. Vorbereitete Arbeitsbilder liegen unter `_data/bratonien-tools/nc-webdav-preview/connection-ID`.
+10. Arbeitsbilder werden als JPEG beziehungsweise PNG erzeugt und maximal auf 4096 px Kantenlänge begrenzt, damit Piwigos Bildbibliothek sie zuverlässig verarbeiten kann.
+11. Der CLI-Derivat-Builder korrigiert die Piwigo-Bildabmessungen anhand des Arbeitsbilds und erzeugt die aktuell konfigurierten Standard- und Custom-Derivate.
+12. Der normale Frontend-Aufruf erzeugt **keine** Derivate. Fehlt ein Derivat, wird das vorbereitete Bild als sicherer Fallback ausgeliefert.
+13. Originalbilder werden bei echtem Originalabruf serverseitig über `webdav-image.php` aus Nextcloud gestreamt; Nextcloud-Zugangsdaten erscheinen nicht im Browser.
 
-Der Shadow Tree dient ausschließlich dazu, Piwigo die Alben und Bilder als Dateisystemstruktur bereitzustellen. Albumlogik, Dateisynchronisierung und die daraus folgenden Piwigo-Datensätze bleiben Aufgabe von Piwigo.
+## Piwigo-Synchronisierung
 
-### Bildauslieferung
+WebDAV verwendet denselben Piwigo-Synchronisationspfad wie der bestehende Connector, aber mit einer verbindungseigenen physischen Site.
 
-Die Dateien im Shadow Tree sind Platzhalter. `include/webdav_image_runtime.inc.php` erkennt die WebDAV-Zuordnung und ersetzt die Bildquelle bei der Auslieferung durch den zugehörigen Nextcloud-Inhalt. `webdav-image.php` streamt die Bilddaten serverseitig, ohne Nextcloud-Zugangsdaten an den Browser weiterzugeben.
+Nach der Dateisynchronisierung laufen die vorhandenen Piwigo-Nacharbeiten, darunter Metadaten-, Integritäts-, Kategorie-, Pfad-, Rang- und Cache-Aktualisierungen sowie der Orphan-Abgleich.
 
-### Löschen
+Die direkte produktive Synchronisierung ist derzeit ausdrücklich auf **Piwigo 16.4.0** abgestimmt.
 
-Eine WebDAV-Verbindung kann unabhängig von ihrer Reihenfolge gelöscht werden. Beim Löschen werden die zugehörige Piwigo-Site und die zugehörigen Piwigo-Datensätze entfernt. Die Originaldateien in Nextcloud bleiben unangetastet. Verwaiste WebDAV-Runtime- und Piwigo-Daten werden vom gemeinsamen Lauf bereinigt.
+## WebDAV-Bildausgabe und Derivate
 
-### Diagnose
+Wichtige Dateien:
 
-Der Status wird pro Verbindung geführt. Fehler enthalten Zeitpunkt, betroffene Verbindung, Prozesszustand und technische Details. Die Administration zeigt keine lokalen Datenbank-, Storage- oder Mount-Einstellungen mehr an.
+- `include/webdav_image_runtime.inc.php` – Zuordnung Piwigo-Bild ↔ WebDAV-Quelle, Preview-/Derivat-Helfer und URL-Filter.
+- `webdav-image.php` – berechtigungsgeprüfter serverseitiger Original-/Preview-Abruf.
+- `runtime/lib/precache-webdav-previews.php` – vorbereitete JPEG-/PNG-Arbeitsbilder ohne dauerhafte Originalkopie.
+- `runtime/lib/build-webdav-derivatives.php` – CLI-Aufbau der konfigurierten Piwigo-Derivate.
 
-## Entfernte Connector-Komponenten
+Der Frontend-Hook führt keine Bildgenerierung mehr aus. Damit bleibt ein Fehler in GD/Imagick/External ImageMagick auf den Hintergrundlauf begrenzt.
 
-Nicht mehr Bestandteil des Plugins sind lokale Nextcloud-Datenbankanbindungen, PostgreSQL-Reader, Source-/Activity-Views, Storage-Mappings, Host-Mounts, lokale Reconcile-/Sync-Skripte, Cutover-/Migrationswerkzeuge und der frühere Simulations-Webservice `bratonien.nc.sync`.
+## Löschen einer WebDAV-Verbindung seit 0.9.6.1
 
-## Prüfpflicht vor Merge
+Eine gelöschte WebDAV-Verbindung darf keine weiterhin sichtbaren oder über alte Piwigo-Datensätze erreichbaren Bilder hinterlassen.
 
-Jede Änderung wird vor dem Merge mindestens mit folgenden GitHub-Actions-Prüfungen validiert:
+Beim Löschen über die Oberfläche:
 
-- PHP-Syntax für 8.2, 8.3, 8.4 und 8.5
-- Prüfung auf doppelte globale `bratonien_tools_*`-Funktionen
-- JavaScript-Syntax
-- Python-Syntax/Compile
-- Shell-Syntax mit `bash -n`
+- werden die zur Verbindung gehörende Piwigo-Site, ihre Alben und Bilddatensätze entfernt;
+- werden zugehörige Piwigo-Derivate entfernt;
+- bleiben die Nextcloud-Originaldateien unangetastet;
+- werden Laufzeit- und Preview-Daten anschließend bereinigt.
+
+Zusätzlich läuft `runtime/cleanup-webdav-piwigo.php` im gemeinsamen Runner. Er erkennt verwaiste WebDAV-Piwigo-Sites, für die keine Connector-Verbindung mehr existiert, und entfernt deren Piwigo-Inhalte sowie Gallery-, Source-, Preview-, State-, Status- und Runtime-Reste. Damit werden auch bereits vor 0.9.6.1 gelöschte Verbindungen nachträglich bereinigt.
+
+## Gemeinsamer Runner
+
+`runtime/run-all.sh` verarbeitet die Schritte in kontrollierter Reihenfolge:
+
+1. lokale Verbindungen reconciliieren;
+2. WebDAV-Verbindungen reconciliieren;
+3. verwaiste WebDAV-Piwigo-Inhalte bereinigen;
+4. verwaiste allgemeine Runtime-Dateien bereinigen;
+5. aktive WebDAV-Verbindungen synchronisieren;
+6. aktive lokale Verbindungen synchronisieren.
+
+Der vorhandene systemd-Timer ruft direkt die Runtime aus dem installierten Plugin auf.
+
+## Status- und UI-Regeln
+
+- Hintergrund-Polling lädt die Admin-Seite nicht neu.
+- Ein geöffneter Verbindungsassistent bleibt bei Statusaktualisierungen geöffnet.
+- Fehlgeschlagene Fallback-/Credential-Prüfungen schließen den Assistenten nicht.
+- Laufzeitfehler unterscheiden WebDAV-Lesen, Piwigo-Synchronisierung, Preview- und Derivatfehler.
+
+## Sicherheit
+
+- Connector-Zugangsdaten werden verschlüsselt gespeichert.
+- WebDAV-Credentials werden nur serverseitig verwendet.
+- Bildzugriffe über `webdav-image.php` werden gegen Piwigos Zugriffsrechte geprüft.
+- Nextcloud-Originale werden weder beim Sync noch beim Löschen einer Verbindung verändert.
+- Derivate und Arbeitsbilder sind lokale Cache-/Arbeitsdaten und dürfen entfernt beziehungsweise neu aufgebaut werden.
+
+## Aktueller Prüfstand
+
+Bereits umgesetzt:
+
+- WebDAV-Verbindungsassistent;
+- Verzeichnisauswahl;
+- rekursiver WebDAV-Scan;
+- Shadow Tree;
+- separate Piwigo-Site je WebDAV-Verbindung;
+- sichtbare Albumstruktur ohne technische Wrapper;
+- echte Bildausgabe aus Nextcloud;
+- lokale vorbereitete Arbeitsbilder;
+- CLI-Derivatstrecke;
+- Piwigo-Nacharbeiten und Orphan-Abgleich;
+- ETag-basierte Wiederverwendung vorbereiteter Bilder;
+- Löschen einer Verbindung einschließlich Piwigo-Inhalten;
+- nachträgliche Bereinigung bereits verwaister WebDAV-Piwigo-Sites.
+
+Weiter zu prüfen beziehungsweise unter realer Last zu härten:
+
+- vollständiger Derivataufbau für alle in der Installation vorkommenden Standard- und Custom-Größen;
+- Verhalten bei großen Bildmengen und vielen gleichzeitig noch nicht vorbereiteten Bildern;
+- Fehlerfälle verschiedener Bildformate und Bild-Backends;
+- langfristige Änderungserkennung und Performance im produktiven Einsatz.
+
+## Versionsregel
+
+Die aktuelle Versionslinie ist **0.9.6.x**. Weitere Sprünge auf eine neue Minor-/Major-Linie erfolgen nur bewusst und ausdrücklich.

README.md

@@ -2,7 +2,7 @@
 
 Modulares Piwigo-Plugin für Administration, Bildverarbeitung, geschützte Freigaben, Fotoauswahl und die Anbindung von Nextcloud an Piwigo.
 
-Aktuelle Plugin-Version: **0.9.6.2**
+Aktuelle Plugin-Version: **0.9.6.1**
 
 ## Grundprinzip
 
@@ -12,7 +12,7 @@ Für die Administration gilt: Der normale Nutzer sieht Aufgaben, Entscheidungen
 
 ## NC Connector
 
-Der NC Connector bindet ausdrücklich ausgewählte Nextcloud-Inhalte ausschließlich per WebDAV an Piwigo an.
+Der NC Connector synchronisiert ausdrücklich ausgewählte Nextcloud-Inhalte mit Piwigo.
 
 ### Datenmodell
 
@@ -22,9 +22,21 @@ Der NC Connector bindet ausdrücklich ausgewählte Nextcloud-Inhalte ausschließ
 - Ordner werden als physische Piwigo-Alben synchronisiert.
 - Root-Dateien können als Piwigo-Orphans registriert werden.
 - Neu importierte physische Connector-Alben werden privat angelegt.
-- Entfernte Quellen verschwinden aus Shadow Tree und Piwigo; die Nextcloud-Originale bleiben erhalten.
+- Entfernte Quellen werden aus Shadow Tree und Piwigo entfernt; die Nextcloud-Originale bleiben erhalten.
 
-### Voraussetzungen
+### Bestehende lokale Quellenmodi
+
+Der bestehende Connector unterstützt weiterhin:
+
+- `legacy-view`
+- `user-shares`
+- `selected-fileids`
+
+Diese Modi bleiben erhalten. Es gibt keine automatische Migration auf WebDAV.
+
+### WebDAV-Modus
+
+Der neue Endnutzerpfad verwendet `source_mode=webdav-placeholder` und `adapter=remote`.
 
 Benötigt werden nur:
 
@@ -33,7 +45,15 @@ Benötigt werden nur:
 - normaler WebDAV-Zugriff auf die Inhalte dieses Benutzers;
 - eine normale Piwigo-Installation mit ihrer vorhandenen PHP-/Bildverarbeitungsumgebung.
 
-Nicht benötigt werden Nextcloud-Datenbankzugriff, `occ`-Adminzugriff, Storage-IDs, Backend-Pfade, zusätzliche Host-Mounts, FUSE, davfs oder rclone.
+Nicht vorausgesetzt werden:
+
+- PostgreSQL-Zugriff auf Nextcloud;
+- `occ`-Adminzugriff;
+- Storage-IDs oder Backend-Pfade;
+- zusätzliche Host-Mounts;
+- FUSE;
+- davfs;
+- rclone.
 
 ### WebDAV-Ablauf
 
@@ -43,34 +63,54 @@ Nicht benötigt werden Nextcloud-Datenbankzugriff, `occ`-Adminzugriff, Storage-I
 4. `runtime/lib/build_webdav_placeholder_source.py` erzeugt eine lokale Platzhalterquelle ohne dauerhafte Originalkopie.
 5. `runtime/lib/shadow_tree.py` baut daraus den verbindungseigenen Shadow Tree.
 6. Der WebDAV-Galeriebaum liegt unter `_data/bratonien-tools/nc-webdav-gallery/connection-ID`.
-7. Jede WebDAV-Verbindung wird als eigene physische Piwigo-Site registriert.
-8. Piwigos Dateisynchronisierung erhält ausschließlich diese verbindungseigene Site.
-9. Die WebDAV-Bildzuordnung ersetzt beim Ausliefern Platzhalter-URLs durch die echte Nextcloud-Bildquelle.
-10. `webdav-image.php` streamt benötigte Bilder serverseitig; Zugangsdaten werden dem Browser nicht offengelegt.
+7. Jede WebDAV-Verbindung wird als eigene physische Piwigo-Site registriert. Die ausgewählte Nextcloud-Wurzel erscheint dadurch direkt als Album; technische `bratonien-webdav-ID`-Wrapper bleiben unsichtbar.
+8. `runtime/lib/precache-webdav-previews.php` erzeugt vorbereitete Arbeitsbilder als JPEG beziehungsweise PNG mit maximal 4096 px Kantenlänge.
+9. `runtime/lib/build-webdav-derivatives.php` korrigiert die Piwigo-Bildabmessungen und erzeugt die konfigurierten Standard- und Custom-Derivate im Hintergrundlauf.
+10. Der Frontend-Aufruf erzeugt keine Derivate. Fehlt eines, wird das vorbereitete Arbeitsbild als sicherer Fallback ausgeliefert.
+11. Wenn das Original benötigt wird, streamt `webdav-image.php` es serverseitig direkt aus Nextcloud. Zugangsdaten werden dem Browser nicht offengelegt.
 
 ### Piwigo-Synchronisierung
 
-Der Connector verwendet die vorhandene Piwigo-Dateisynchronisierung für die verbindungseigene WebDAV-Site. Der Shadow Tree ist die Dateisystemdarstellung, die Piwigo für Alben und Bilder benötigt.
+Der WebDAV-Pfad nutzt die vorhandene Piwigo-Synchronisationslogik mit einer verbindungseigenen Site.
 
-`runtime/lib/piwigo-sync.php` ruft dafür `bratonien.nc.syncProductive` auf. Die Methode führt den Piwigo-Core-Sync für die konkrete Site aus. `bratonien.nc.syncOrphans` arbeitet ebenfalls nur auf der übergebenen WebDAV-Site.
+Nach dem Dateiabgleich laufen die vorhandenen Nacharbeiten, darunter:
 
-Die produktive Synchronisierung ist aktuell auf **Piwigo 16.4.0** abgestimmt.
+- Metadaten-Synchronisierung;
+- Bild- und Kategorieintegrität;
+- Uppercats/Kategoriestruktur;
+- globale Ränge;
+- Pfadpflege;
+- Rating-Score;
+- Benutzer-Cache-Invalidierung;
+- Orphan-Abgleich.
 
-### Piwigo-Zugang
+Die direkte produktive Synchronisierung ist aktuell ausdrücklich auf **Piwigo 16.4.0** abgestimmt.
 
-Der Zugang wird pro Verbindung gespeichert. Bevorzugt wird eine Piwigo-API. Wird keine API eingerichtet, kann ein Administrator-/Webmaster-Benutzer mit Passwort als Fallback verwendet werden.
+### Fallback-Zugang
+
+Piwigo wird API-first angesprochen. Ist für eine Verbindung keine API konfiguriert, kann Benutzername/Passwort als Fallback verwendet werden.
+
+Der Assistent prüft Fallback-Zugangsdaten vor dem Speichern. Eine fehlgeschlagene Prüfung schließt oder leert den Assistenten nicht.
 
 ### Statusanzeige
 
-Die Administration zeigt Laufzeitstatus und Fehler pro Verbindung. Fehlerdetails bleiben der betroffenen Verbindung zugeordnet.
+Die Administration zeigt den Laufzeitstatus regelmäßig im Hintergrund an. Dafür wird die Admin-Seite nicht neu geladen; offene Dialoge, Assistenten und aufgeklappte Bereiche bleiben erhalten.
+
+Fehler werden nach Prozessschritt getrennt dargestellt, unter anderem für WebDAV-Einlesen, Piwigo-Synchronisierung, Preview-Erzeugung und Derivat-Erzeugung.
 
 ### Löschen einer Verbindung
 
-Beim Löschen einer WebDAV-Verbindung werden ihre zugehörige Piwigo-Site und die dazugehörigen Piwigo-Datensätze entfernt. Nextcloud-Dateien bleiben unverändert. Runtime-, Shadowtree-, Source-, Preview- und Statusdaten werden bereinigt.
+Seit **0.9.6.1** besitzt der WebDAV-Pfad einen vollständigen Lösch-Lebenszyklus:
+
+- Beim Löschen einer WebDAV-Verbindung werden ihre Piwigo-Site, Alben und Bilddatensätze entfernt.
+- Zugehörige Piwigo-Derivate werden entfernt.
+- Nextcloud-Originale bleiben unverändert.
+- Runtime-, Shadowtree-, Source-, Preview- und Statusdaten werden bereinigt.
+- `runtime/cleanup-webdav-piwigo.php` erkennt zusätzlich bereits verwaiste WebDAV-Piwigo-Sites, für die keine Connector-Verbindung mehr existiert, und bereinigt sie im gemeinsamen Runner nachträglich.
 
 ### Runtime
 
-Aktive WebDAV-Verbindungen werden über den gemeinsamen Runner verarbeitet:
+Aktive Verbindungen werden über den gemeinsamen Runner verarbeitet:
 
 - `bratonien-nc-connector.timer`
 - `bratonien-nc-connector.service`
@@ -78,15 +118,25 @@ Aktive WebDAV-Verbindungen werden über den gemeinsamen Runner verarbeitet:
 
 Verbindungsspezifische Konfigurationen liegen unter `/etc/bratonien-tools/nc-connector/`, State-Daten unter `/var/lib/bratonien-tools/nc-connector/connection-ID`.
 
-Der Lauf besteht aus:
+Die Reihenfolge des gemeinsamen Laufs ist:
 
-1. WebDAV-Verbindungen reconciliieren;
-2. verwaiste WebDAV-Piwigo-Inhalte bereinigen;
-3. jede vorhandene WebDAV-Verbindung synchronisieren.
+1. lokale Verbindungen reconciliieren;
+2. WebDAV-Verbindungen reconciliieren;
+3. verwaiste WebDAV-Piwigo-Inhalte bereinigen;
+4. allgemeine verwaiste Runtime-Dateien bereinigen;
+5. WebDAV-Verbindungen synchronisieren;
+6. lokale Verbindungen synchronisieren.
 
 ## Bildcache
 
-Bratonien Tools kann Piwigo-Bildderivate gezielt leeren, vorhandene Bildgrößen neu erzeugen und den Cache-Aufbau als Worker-Prozess starten bzw. abbrechen. Originalbilder bleiben unangetastet.
+Bratonien Tools kann:
+
+- Piwigo-Bildderivate gezielt leeren;
+- vorhandene Bildgrößen neu erzeugen;
+- den Cache-Aufbau als Worker-Prozess starten und abbrechen;
+- die Worker-Zahl automatisch oder manuell konfigurieren.
+
+Originalbilder bleiben unangetastet.
 
 ## Wasserzeichenverwaltung
 
@@ -121,7 +171,14 @@ Alben können in Bratonien Tools zwischen öffentlich und privat umgeschaltet we
 
 ## Geschützte Albumfreigaben
 
-Private Alben können über eigene Freigabelinks geteilt werden, optional mit Passwort und Ablaufdatum. Die Freigaben verwenden einen technischen Piwigo-Benutzer mit minimalem Albumzugriff und können widerrufen werden.
+Private Alben können über eigene Freigabelinks geteilt werden:
+
+- optionales Passwort;
+- optionales Ablaufdatum;
+- eigener technischer Piwigo-Benutzer pro Freigabe;
+- minimaler Albumzugriff;
+- Hash-Speicherung von Passwörtern und Tokens;
+- Widerruf und automatische Bereinigung beim Löschen eines Albums.
 
 ## Erweiterte Bildnavigation
 
@@ -129,25 +186,34 @@ Die Piwigo-Bilddetailseite erhält responsive Navigationszonen für vorheriges B
 
 ## Selbstaktualisierung
 
-Der integrierte Updater liest den Zielstand aus GitHub, bindet ein Update an einen konkreten Commit, prüft Version und SHA-256, erstellt vor dem Austausch ein Backup und verlangt Webmaster-Rechte sowie die notwendigen Servervoraussetzungen.
+Der integrierte Updater:
+
+- liest den Zielstand aus GitHub;
+- bindet ein Update an einen konkreten Commit;
+- prüft Version und SHA-256 des Zielstands;
+- erstellt vor dem Austausch ein Backup;
+- nutzt Post/Redirect/Get;
+- verlangt Webmaster-Rechte, `ZipArchive` und ausreichende Schreibrechte.
 
 ## Wichtige Dateien und Verzeichnisse
 
 - `main.inc.php` – Plugin-Einstieg und Runtime-Hooks
 - `admin.php` – zentraler Admin-Controller
-- `include/nc_connector.inc.php` – WebDAV-Verbindungsmodell
+- `include/nc_connector.inc.php` – Datenmodell und gemeinsame Connector-Funktionen
 - `include/nc_connector_wizard.inc.php` – Verbindungsassistent
-- `include/nc_connector_wizard_webdav_flow.inc.php` – WebDAV-Wizardablauf
-- `include/nc_connector_delete_safe.inc.php` – Löschen einschließlich WebDAV-Piwigo-Inhalten
-- `include/nc_productive_ws.inc.php` – Piwigo-Core-Dateisync
-- `include/nc_orphan_ws.inc.php` – Orphan-Synchronisierung der konkreten WebDAV-Site
-- `include/webdav_image_runtime.inc.php` – WebDAV-Bildzuordnung und URL-Filter
+- `include/nc_connector_wizard_webdav_flow.inc.php` – WebDAV-first-Wizardablauf
+- `include/nc_connector_delete_safe.inc.php` – sicheres Löschen einschließlich WebDAV-Piwigo-Inhalten
+- `include/nc_productive_ws.inc.php` – produktiver Piwigo-Dateisync
+- `include/nc_orphan_ws.inc.php` – Orphan-Synchronisierung
+- `include/webdav_image_runtime.inc.php` – WebDAV-Bildzuordnung, Preview-/Derivathilfen und URL-Filter
 - `webdav-image.php` – berechtigungsgeprüfter WebDAV-Bildstream
 - `runtime/reconcile-webdav.php` – WebDAV-Runtime-Reconcile
-- `runtime/cleanup-webdav-piwigo.php` – Bereinigung verwaister WebDAV-Piwigo-Sites
+- `runtime/cleanup-webdav-piwigo.php` – Bereinigung gelöschter/verwaister WebDAV-Verbindungen in Piwigo
 - `runtime/sync-webdav.sh` – Ablauf einer WebDAV-Verbindung
-- `runtime/run-all.sh` – gemeinsamer WebDAV-Runner
+- `runtime/run-all.sh` – gemeinsamer Multi-Connection-Runner
 - `runtime/lib/build_webdav_placeholder_source.py` – rekursiver WebDAV-Scan und Platzhalterquelle
+- `runtime/lib/precache-webdav-previews.php` – vorbereitete JPEG-/PNG-Arbeitsbilder
+- `runtime/lib/build-webdav-derivatives.php` – CLI-Derivat-Builder
 - `runtime/lib/shadow_tree.py` – atomarer Shadow Tree
 - `runtime/lib/piwigo-sync.php` – Piwigo-Sync mit API/Fallback
 - `main-cache-build.php` – allgemeiner Piwigo-Derivat-/Cache-Builder
@@ -165,7 +231,16 @@ Der integrierte Updater liest den Zielstand aus GitHub, bindet ein Update an ein
 - Connector-Zugangsdaten werden verschlüsselt gespeichert;
 - Nextcloud-Zugangsdaten werden verbindungseigen gespeichert und nur serverseitig verwendet;
 - Wizard-Geheimnisse werden nicht im Browser-Web-Storage persistiert;
+- SQL-View-Namen werden vor Verwendung validiert;
 - produktive Piwigo-API ist versionsgebunden;
 - Originalbilder werden vom Connector nicht gelöscht;
 - WebDAV-Originalbilder werden nicht dauerhaft lokal gespeichert;
 - Update-Pakete werden an Commit und Hash gebunden.
+
+## Entwicklungsstand
+
+`0.9.6.x` ist die aktuelle Versionslinie.
+
+Mit **0.9.6.1** ist der WebDAV-Pfad einschließlich Piwigo-Registrierung, vorbereiteter Bildquelle, CLI-Derivatstrecke und Lösch-/Cleanup-Lebenszyklus im Repository umgesetzt. Der bestehende lokale Connector bleibt parallel erhalten.
+
+Der jeweils detaillierte Prüf- und Entwicklungsstand steht in [`CURRENT_STATUS.md`](CURRENT_STATUS.md).

admin.php

@@ -119,9 +119,25 @@ foreach ($nc_connector['connections'] as &$nc_connection)
 {
   $nc_connection['last_sync'] = bratonien_tools_nc_connector_connection_last_status($nc_connection);
   $nc_connection['display_name'] = $nc_connection['name'];
+
+  $storage_lines = array();
+  $storages = isset($nc_connection['config']['storages']) && is_array($nc_connection['config']['storages'])
+    ? $nc_connection['config']['storages']
+    : array();
+  foreach ($storages as $storage)
+  {
+    $storage_lines[] = (string)($storage['storage_id'] ?? '').' | '.(string)($storage['source_prefix'] ?? '').' | '.(string)($storage['local_mount'] ?? '');
+  }
+  $nc_connection['storage_text'] = implode("\n", $storage_lines);
+
   if (!empty($nc_connection['fallback_stored']))
   {
     $nc_connection['display_name'] .= ' · Fallback gespeichert';
+    $nc_connection['verification_checks'][] = array(
+      'name' => 'Piwigo-Fallback',
+      'ok' => true,
+      'detail' => 'Benutzername/Passwort verschluesselt gespeichert',
+    );
   }
 }
 unset($nc_connection);
@@ -143,6 +159,10 @@ $nc_system_defaults = array(
   'last_run_error_detail' => '',
   'next_run_timestamp' => 0,
   'next_run_label' => 'Nicht verfügbar',
+  'legacy_runtime_exists' => false,
+  'legacy_config_exists' => false,
+  'legacy_service_exists' => false,
+  'legacy_timer_exists' => false,
 );
 $nc_connector['system'] = array_merge(
   $nc_system_defaults,

include/nc_connector.inc.php

@@ -4,6 +4,15 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
+/**
+ * NC Connector migration and verification phase.
+ *
+ * The existing /etc/piwigo-sync installation remains the production path.
+ * Bratonien Tools imports a copy of its configuration into its own connection
+ * store and verifies that copy independently. Importing and verification never
+ * change or stop the legacy sync.
+ */
+
 function bratonien_tools_nc_connector_table()
 {
   if (function_exists('bratonien_tools_table'))
@@ -21,8 +30,9 @@ function bratonien_tools_nc_connector_ensure_table()
     id int(11) NOT NULL AUTO_INCREMENT,
     connection_key varchar(64) NOT NULL,
     name varchar(255) NOT NULL,
-    adapter enum('remote') NOT NULL DEFAULT 'remote',
-    enabled tinyint(1) NOT NULL DEFAULT 1,
+    adapter enum('local','remote') NOT NULL DEFAULT 'local',
+    enabled tinyint(1) NOT NULL DEFAULT 0,
+    takeover_state enum('imported','verified','active','disabled') NOT NULL DEFAULT 'imported',
     config_json mediumtext NOT NULL,
     secret_blob mediumtext DEFAULT NULL,
     created datetime NOT NULL,
@@ -54,59 +64,139 @@ function bratonien_tools_nc_connector_secret_key()
 function bratonien_tools_nc_connector_encrypt_secret($plain)
 {
   $plain = (string)$plain;
-  if ($plain === '') return '';
-  if (!function_exists('openssl_encrypt')) throw new RuntimeException('OpenSSL wird zum sicheren Speichern der Connector-Zugangsdaten benötigt.');
+  if ($plain === '')
+  {
+    return '';
+  }
+  if (!function_exists('openssl_encrypt'))
+  {
+    throw new RuntimeException('OpenSSL wird zum sicheren Speichern der Connector-Zugangsdaten benoetigt.');
+  }
 
   $iv = random_bytes(12);
   $tag = '';
-  $cipher = openssl_encrypt($plain, 'aes-256-gcm', bratonien_tools_nc_connector_secret_key(), OPENSSL_RAW_DATA, $iv, $tag);
-  if ($cipher === false) throw new RuntimeException('Connector-Zugangsdaten konnten nicht verschlüsselt werden.');
+  $cipher = openssl_encrypt(
+    $plain,
+    'aes-256-gcm',
+    bratonien_tools_nc_connector_secret_key(),
+    OPENSSL_RAW_DATA,
+    $iv,
+    $tag
+  );
+  if ($cipher === false)
+  {
+    throw new RuntimeException('Connector-Zugangsdaten konnten nicht verschluesselt werden.');
+  }
 
   return base64_encode(json_encode(array(
-    'v'=>1,
-    'iv'=>base64_encode($iv),
-    'tag'=>base64_encode($tag),
-    'data'=>base64_encode($cipher),
+    'v' => 1,
+    'iv' => base64_encode($iv),
+    'tag' => base64_encode($tag),
+    'data' => base64_encode($cipher),
   )));
 }
 
 function bratonien_tools_nc_connector_decrypt_secret($blob)
 {
   $blob = trim((string)$blob);
-  if ($blob === '') return '';
-  if (!function_exists('openssl_decrypt')) throw new RuntimeException('OpenSSL wird zum Lesen der Connector-Zugangsdaten benötigt.');
+  if ($blob === '')
+  {
+    return '';
+  }
+  if (!function_exists('openssl_decrypt'))
+  {
+    throw new RuntimeException('OpenSSL wird zum Lesen der Connector-Zugangsdaten benoetigt.');
+  }
 
   $outer = base64_decode($blob, true);
   $payload = is_string($outer) ? json_decode($outer, true) : null;
-  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) throw new RuntimeException('Gespeicherte Connector-Zugangsdaten haben ein unbekanntes Format.');
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1)
+  {
+    throw new RuntimeException('Gespeicherte Connector-Zugangsdaten haben ein unbekanntes Format.');
+  }
 
   $iv = base64_decode((string)($payload['iv'] ?? ''), true);
   $tag = base64_decode((string)($payload['tag'] ?? ''), true);
   $cipher = base64_decode((string)($payload['data'] ?? ''), true);
-  if (!is_string($iv) || !is_string($tag) || !is_string($cipher)) throw new RuntimeException('Gespeicherte Connector-Zugangsdaten sind beschädigt.');
+  if (!is_string($iv) || !is_string($tag) || !is_string($cipher))
+  {
+    throw new RuntimeException('Gespeicherte Connector-Zugangsdaten sind beschaedigt.');
+  }
+
+  $plain = openssl_decrypt(
+    $cipher,
+    'aes-256-gcm',
+    bratonien_tools_nc_connector_secret_key(),
+    OPENSSL_RAW_DATA,
+    $iv,
+    $tag
+  );
+  if ($plain === false)
+  {
+    throw new RuntimeException('Connector-Zugangsdaten konnten nicht entschluesselt werden.');
+  }
 
-  $plain = openssl_decrypt($cipher, 'aes-256-gcm', bratonien_tools_nc_connector_secret_key(), OPENSSL_RAW_DATA, $iv, $tag);
-  if ($plain === false) throw new RuntimeException('Connector-Zugangsdaten konnten nicht entschlüsselt werden.');
   return (string)$plain;
 }
 
-function bratonien_tools_nc_connector_is_webdav(array $row)
+function bratonien_tools_nc_connector_read_config($path)
 {
-  $config = isset($row['config']) && is_array($row['config']) ? $row['config'] : array();
-  return (string)($row['adapter'] ?? '') === 'remote' && (string)($config['source_mode'] ?? '') === 'webdav-placeholder';
+  $config = array();
+  if (!is_readable($path))
+  {
+    return $config;
+  }
+
+  $lines = @file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+  if (!is_array($lines))
+  {
+    return $config;
+  }
+
+  foreach ($lines as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    if (!preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches))
+    {
+      continue;
+    }
+
+    $value = trim($matches[2]);
+    $length = strlen($value);
+    if ($length >= 2)
+    {
+      $first = $value[0];
+      $last = $value[$length - 1];
+      if (($first === '"' && $last === '"') || ($first === "'" && $last === "'"))
+      {
+        $value = substr($value, 1, -1);
+      }
+    }
+    $config[$matches[1]] = $value;
+  }
+
+  return $config;
 }
 
 function bratonien_tools_nc_connector_connections()
 {
   bratonien_tools_nc_connector_ensure_table();
   $table = bratonien_tools_nc_connector_table();
-  $result = pwg_query("SELECT id, connection_key, name, adapter, enabled, config_json, secret_blob, created, updated FROM `$table` WHERE adapter='remote' ORDER BY id");
+  $result = pwg_query("SELECT id, connection_key, name, adapter, enabled, takeover_state, config_json, secret_blob, created, updated FROM `$table` ORDER BY id");
   $connections = array();
 
   while ($row = pwg_db_fetch_assoc($result))
   {
     $config = json_decode((string)$row['config_json'], true);
-    if (!is_array($config) || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder') continue;
+    if (!is_array($config))
+    {
+      $config = array();
+    }
+    $verification = isset($config['verification']) && is_array($config['verification']) ? $config['verification'] : array();
 
     $has_fallback = false;
     try
@@ -115,7 +205,8 @@ function bratonien_tools_nc_connector_connections()
       $credentials = json_decode($plain, true);
       if (is_array($credentials))
       {
-        $has_fallback = trim((string)($credentials['piwigo_user'] ?? '')) !== '' && (string)($credentials['piwigo_password'] ?? '') !== '';
+        $has_fallback = trim((string)($credentials['piwigo_user'] ?? '')) !== ''
+          && (string)($credentials['piwigo_password'] ?? '') !== '';
       }
     }
     catch (Throwable $e)
@@ -127,9 +218,17 @@ function bratonien_tools_nc_connector_connections()
     $row['id'] = (int)$row['id'];
     $row['enabled'] = (bool)$row['enabled'];
     $row['config'] = $config;
-    $row['user'] = (string)($config['nextcloud_access_user'] ?? $config['access_user'] ?? '');
-    $row['storage_count'] = isset($config['roots']) && is_array($config['roots']) ? count($config['roots']) : 0;
+    $row['host'] = isset($config['host']) ? (string)$config['host'] : '';
+    $row['database'] = isset($config['database']) ? (string)$config['database'] : '';
+    $row['user'] = isset($config['user']) ? (string)$config['user'] : '';
+    $row['source_view'] = isset($config['source_view']) ? (string)$config['source_view'] : '';
+    $row['storage_count'] = isset($config['storages']) && is_array($config['storages']) ? count($config['storages']) : 0;
     $row['fallback_stored'] = $has_fallback;
+    $row['verification'] = $verification;
+    $row['verified_ok'] = !empty($verification['ok']);
+    $row['verified_at'] = isset($verification['checked_at']) ? (string)$verification['checked_at'] : '';
+    $row['source_count'] = isset($verification['source_count']) ? (int)$verification['source_count'] : null;
+    $row['verification_checks'] = isset($verification['checks']) && is_array($verification['checks']) ? $verification['checks'] : array();
     $connections[] = $row;
   }
 
@@ -141,24 +240,233 @@ function bratonien_tools_nc_connector_connection($id, $with_secret = false)
   bratonien_tools_nc_connector_ensure_table();
   $table = bratonien_tools_nc_connector_table();
   $id = (int)$id;
-  if ($id <= 0) return null;
+  if ($id <= 0)
+  {
+    return null;
+  }
 
-  $columns = 'id, connection_key, name, adapter, enabled, config_json, created, updated';
-  if ($with_secret) $columns .= ', secret_blob';
-  $result = pwg_query("SELECT $columns FROM `$table` WHERE id = $id AND adapter='remote' LIMIT 1");
-  if (!pwg_db_num_rows($result)) return null;
+  $columns = 'id, connection_key, name, adapter, enabled, takeover_state, config_json, created, updated';
+  if ($with_secret)
+  {
+    $columns .= ', secret_blob';
+  }
+  $result = pwg_query("SELECT $columns FROM `$table` WHERE id = $id LIMIT 1");
+  if (!pwg_db_num_rows($result))
+  {
+    return null;
+  }
 
   $row = pwg_db_fetch_assoc($result);
   $row['id'] = (int)$row['id'];
   $row['enabled'] = (bool)$row['enabled'];
   $row['config'] = json_decode((string)$row['config_json'], true);
-  if (!is_array($row['config']) || (string)($row['config']['source_mode'] ?? '') !== 'webdav-placeholder') return null;
+  if (!is_array($row['config']))
+  {
+    $row['config'] = array();
+  }
   return $row;
 }
 
+function bratonien_tools_nc_connector_import_bundle_path()
+{
+  return '/tmp/bratonien-tools-nc-import.json';
+}
+
+function bratonien_tools_nc_connector_import_legacy()
+{
+  $path = bratonien_tools_nc_connector_import_bundle_path();
+  if (!is_readable($path))
+  {
+    throw new RuntimeException('Kein lesbares Migrationspaket gefunden. Fuehre zuerst den angezeigten Connector-Migrationsbefehl im Piwigo-LXC aus.');
+  }
+
+  $raw = @file_get_contents($path);
+  $bundle = is_string($raw) ? json_decode($raw, true) : null;
+  if (!is_array($bundle) || (int)($bundle['format'] ?? 0) !== 1 || !is_array($bundle['config'] ?? null))
+  {
+    throw new RuntimeException('Das Migrationspaket ist ungueltig oder unvollstaendig.');
+  }
+
+  $legacy = $bundle['config'];
+  $required = array('NC_DB_HOST', 'NC_DB_PORT', 'NC_DB_NAME', 'NC_DB_USER', 'NC_DB_VIEW');
+  foreach ($required as $key)
+  {
+    if (!isset($legacy[$key]) || trim((string)$legacy[$key]) === '')
+    {
+      throw new RuntimeException('Im Migrationspaket fehlt '.$key.'.');
+    }
+  }
+
+  $password = isset($bundle['db_password']) ? (string)$bundle['db_password'] : '';
+  if ($password === '')
+  {
+    throw new RuntimeException('Das Migrationspaket enthaelt kein Datenbankpasswort.');
+  }
+
+  $config = array(
+    'host' => (string)$legacy['NC_DB_HOST'],
+    'port' => (string)$legacy['NC_DB_PORT'],
+    'database' => (string)$legacy['NC_DB_NAME'],
+    'user' => (string)$legacy['NC_DB_USER'],
+    'source_view' => (string)$legacy['NC_DB_VIEW'],
+    'activity_view' => isset($legacy['NC_ACTIVITY_VIEW']) ? (string)$legacy['NC_ACTIVITY_VIEW'] : 'piwigo_showcase_activity',
+    'gallery_root' => isset($legacy['GALLERY_ROOT']) ? (string)$legacy['GALLERY_ROOT'] : '',
+    'state_dir' => isset($legacy['STATE_DIR']) ? (string)$legacy['STATE_DIR'] : '',
+    'status_file' => isset($legacy['STATUS_FILE']) ? (string)$legacy['STATUS_FILE'] : '',
+    'quiet_seconds' => isset($legacy['QUIET_SECONDS']) ? (int)$legacy['QUIET_SECONDS'] : 120,
+    'max_wait_seconds' => isset($legacy['MAX_WAIT_SECONDS']) ? (int)$legacy['MAX_WAIT_SECONDS'] : 900,
+    'full_sync_seconds' => isset($legacy['FULL_SYNC_SECONDS']) ? (int)$legacy['FULL_SYNC_SECONDS'] : 86400,
+    'storages' => isset($bundle['storages']) && is_array($bundle['storages']) ? $bundle['storages'] : array(),
+    'imported_from' => '/etc/piwigo-sync/piwigo.conf',
+    'legacy_sync_enabled' => isset($legacy['PIWIGO_SYNC_ENABLED']) && (string)$legacy['PIWIGO_SYNC_ENABLED'] === '1',
+  );
+
+  $key_material = $config['host'].'|'.$config['database'].'|'.$config['user'].'|'.$config['source_view'];
+  $connection_key = 'legacy-'.substr(hash('sha256', $key_material), 0, 24);
+  $table = bratonien_tools_nc_connector_table();
+  bratonien_tools_nc_connector_ensure_table();
+  $now = date('Y-m-d H:i:s');
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  $secret_blob = bratonien_tools_nc_connector_encrypt_secret($password);
+
+  $escaped_key = pwg_db_real_escape_string($connection_key);
+  $existing = pwg_query("SELECT id FROM `$table` WHERE connection_key = '$escaped_key' LIMIT 1");
+  if (pwg_db_num_rows($existing))
+  {
+    $row = pwg_db_fetch_assoc($existing);
+    $id = (int)$row['id'];
+    pwg_query("UPDATE `$table` SET
+      name = 'Bestehende Nextcloud',
+      adapter = 'local',
+      enabled = 0,
+      takeover_state = 'imported',
+      config_json = '".pwg_db_real_escape_string($config_json)."',
+      secret_blob = '".pwg_db_real_escape_string($secret_blob)."',
+      updated = '".pwg_db_real_escape_string($now)."'
+      WHERE id = $id");
+  }
+  else
+  {
+    pwg_query("INSERT INTO `$table`
+      (connection_key, name, adapter, enabled, takeover_state, config_json, secret_blob, created, updated)
+      VALUES (
+        '$escaped_key',
+        'Bestehende Nextcloud',
+        'local',
+        0,
+        'imported',
+        '".pwg_db_real_escape_string($config_json)."',
+        '".pwg_db_real_escape_string($secret_blob)."',
+        '".pwg_db_real_escape_string($now)."',
+        '".pwg_db_real_escape_string($now)."'
+      )");
+  }
+
+  @unlink($path);
+
+  return array(
+    'message' => 'Bestehende Nextcloud-Verbindung wurde in den NC Connector importiert. Der produktive Legacy-Sync bleibt unveraendert aktiv; die importierte Verbindung ist noch nicht aktiviert.',
+  );
+}
+
+function bratonien_tools_nc_connector_view_name($name)
+{
+  $name = trim((string)$name);
+  if (!preg_match('/^[A-Za-z_][A-Za-z0-9_]*(\.[A-Za-z_][A-Za-z0-9_]*)?$/', $name))
+  {
+    throw new RuntimeException('Ungueltiger PostgreSQL-View-Name in der Connector-Konfiguration.');
+  }
+
+  $parts = explode('.', $name);
+  $quoted = array();
+  foreach ($parts as $part)
+  {
+    $quoted[] = '"'.str_replace('"', '""', $part).'"';
+  }
+  return implode('.', $quoted);
+}
+
+function bratonien_tools_nc_connector_psql($config, $password, $query)
+{
+  $psql = '/usr/bin/psql';
+  if (!is_executable($psql))
+  {
+    throw new RuntimeException('PostgreSQL-Client /usr/bin/psql ist nicht installiert oder nicht ausfuehrbar.');
+  }
+  if (!function_exists('proc_open'))
+  {
+    throw new RuntimeException('PHP-Funktion proc_open ist deaktiviert; Connector-Verifikation kann nicht ausgefuehrt werden.');
+  }
+
+  $command = array(
+    $psql,
+    '-X', '-A', '-t',
+    '-v', 'ON_ERROR_STOP=1',
+    '-h', (string)$config['host'],
+    '-p', (string)$config['port'],
+    '-U', (string)$config['user'],
+    '-d', (string)$config['database'],
+    '-c', (string)$query,
+  );
+  $descriptors = array(
+    0 => array('pipe', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $env = array(
+    'PGPASSWORD' => (string)$password,
+    'PGCONNECT_TIMEOUT' => '5',
+    'LC_ALL' => 'C',
+  );
+
+  $process = @proc_open($command, $descriptors, $pipes, null, $env);
+  if (!is_resource($process))
+  {
+    throw new RuntimeException('PostgreSQL-Pruefprozess konnte nicht gestartet werden.');
+  }
+
+  fclose($pipes[0]);
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+
+  $stdout = trim((string)$stdout);
+  $stderr = trim((string)$stderr);
+  if ($exit !== 0)
+  {
+    $detail = $stderr !== '' ? $stderr : 'psql Exit-Code '.$exit;
+    throw new RuntimeException('PostgreSQL-Abfrage fehlgeschlagen: '.$detail);
+  }
+
+  return $stdout;
+}
+
+function bratonien_tools_nc_connector_mount_points()
+{
+  $mounts = array();
+  $content = @file_get_contents('/proc/self/mountinfo');
+  if (!is_string($content))
+  {
+    return $mounts;
+  }
+  foreach (preg_split('/\r\n|\r|\n/', $content) as $line)
+  {
+    if ($line === '') continue;
+    $parts = explode(' ', $line);
+    if (count($parts) < 5) continue;
+    $mount = str_replace(array('\\040','\\011','\\012','\\134'), array(' ',"\t","\n",'\\'), $parts[4]);
+    $mounts[rtrim($mount, '/')] = true;
+  }
+  return $mounts;
+}
+
 function bratonien_tools_nc_connector_status()
 {
   $connections = bratonien_tools_nc_connector_connections();
+  $legacy_config = '/etc/piwigo-sync/piwigo.conf';
+  $legacy_present = is_readable($legacy_config);
   $active_count = 0;
   foreach ($connections as $connection)
   {
@@ -166,9 +474,11 @@ function bratonien_tools_nc_connector_status()
   }
 
   return array(
-    'phase'=>'webdav',
-    'connections'=>$connections,
-    'connection_count'=>count($connections),
-    'active_count'=>$active_count,
+    'phase' => 'native-runtime',
+    'legacy_config_path' => $legacy_config,
+    'legacy_present' => $legacy_present,
+    'connections' => $connections,
+    'connection_count' => count($connections),
+    'active_count' => $active_count,
   );
 }

include/nc_connector_auth.inc.php

@@ -0,0 +1,246 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_api_credentials()
+{
+  global $conf;
+
+  $blob = isset($conf['bratonien_nc_piwigo_api']) ? trim((string)$conf['bratonien_nc_piwigo_api']) : '';
+  if ($blob === '')
+  {
+    return array('key_id'=>'', 'key_secret'=>'');
+  }
+
+  try
+  {
+    $plain = bratonien_tools_nc_connector_decrypt_secret($blob);
+    $decoded = json_decode($plain, true);
+    if (!is_array($decoded))
+    {
+      return array('key_id'=>'', 'key_secret'=>'');
+    }
+
+    return array(
+      'key_id' => (string)($decoded['key_id'] ?? ''),
+      'key_secret' => (string)($decoded['key_secret'] ?? ''),
+    );
+  }
+  catch (Throwable $e)
+  {
+    return array('key_id'=>'', 'key_secret'=>'');
+  }
+}
+
+function bratonien_tools_nc_api_credentials_store($key_id, $key_secret)
+{
+  global $conf;
+
+  $key_id = trim((string)$key_id);
+  $key_secret = trim((string)$key_secret);
+  if ($key_id === '' || $key_secret === '')
+  {
+    throw new RuntimeException('API-Schluessel-ID und Geheimnis muessen angegeben werden.');
+  }
+
+  $payload = json_encode(array(
+    'v' => 1,
+    'key_id' => $key_id,
+    'key_secret' => $key_secret,
+  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($payload))
+  {
+    throw new RuntimeException('API-Zugangsdaten konnten nicht serialisiert werden.');
+  }
+
+  $blob = bratonien_tools_nc_connector_encrypt_secret($payload);
+  conf_update_param('bratonien_nc_piwigo_api', $blob);
+  $conf['bratonien_nc_piwigo_api'] = $blob;
+}
+
+function bratonien_tools_nc_connector_api_delete()
+{
+  global $conf;
+
+  conf_update_param('bratonien_nc_piwigo_api', '');
+  $conf['bratonien_nc_piwigo_api'] = '';
+
+  return array('message'=>'Gespeicherte Piwigo-API-Zugangsdaten wurden geloescht.');
+}
+
+function bratonien_tools_nc_connector_auth_credentials($connection)
+{
+  $credentials = bratonien_tools_nc_connector_credentials_from_blob($connection['secret_blob'] ?? '');
+  return array(
+    'db_password' => (string)($credentials['db_password'] ?? ''),
+    'piwigo_user' => (string)($credentials['piwigo_user'] ?? ''),
+    'piwigo_password' => (string)($credentials['piwigo_password'] ?? ''),
+  );
+}
+
+function bratonien_tools_nc_connector_fallback_save()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $username = trim((string)($_POST['nc_fallback_user'] ?? ''));
+  $password = (string)($_POST['nc_fallback_password'] ?? '');
+  if ($username === '' || $password === '')
+  {
+    throw new RuntimeException('Benutzername und Passwort fuer den Fallback muessen angegeben werden.');
+  }
+
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+
+  $credentials = bratonien_tools_nc_connector_auth_credentials($connection);
+  if ($credentials['db_password'] === '')
+  {
+    throw new RuntimeException('Das Datenbankpasswort der Verbindung fehlt.');
+  }
+
+  $blob = bratonien_tools_nc_connector_encrypt_credentials(
+    $credentials['db_password'],
+    $username,
+    $password
+  );
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET secret_blob='".pwg_db_real_escape_string($blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id." LIMIT 1");
+
+  return array('message'=>'Piwigo-Benutzername und Passwort wurden verschluesselt als API-Fallback gespeichert.');
+}
+
+function bratonien_tools_nc_connector_fallback_delete()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+
+  $credentials = bratonien_tools_nc_connector_auth_credentials($connection);
+  if ($credentials['db_password'] === '')
+  {
+    throw new RuntimeException('Das Datenbankpasswort der Verbindung fehlt.');
+  }
+
+  $blob = bratonien_tools_nc_connector_encrypt_credentials($credentials['db_password'], '', '');
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET secret_blob='".pwg_db_real_escape_string($blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id." LIMIT 1");
+
+  return array('message'=>'Gespeicherter Benutzername/Passwort-Fallback wurde geloescht.');
+}
+
+function bratonien_tools_nc_connector_fallback_http_request($url, array $fields, $cookie_file)
+{
+  $ch = curl_init($url);
+  curl_setopt_array($ch, array(
+    CURLOPT_RETURNTRANSFER => true,
+    CURLOPT_POST => true,
+    CURLOPT_POSTFIELDS => http_build_query($fields),
+    CURLOPT_COOKIEJAR => $cookie_file,
+    CURLOPT_COOKIEFILE => $cookie_file,
+    CURLOPT_CONNECTTIMEOUT => 10,
+    CURLOPT_TIMEOUT => 900,
+    CURLOPT_FOLLOWLOCATION => false,
+    CURLOPT_USERAGENT => 'Bratonien-Tools-NC-Fallback/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+  ));
+  $body = curl_exec($ch);
+  $errno = curl_errno($ch);
+  $error = curl_error($ch);
+  $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+  curl_close($ch);
+
+  if ($body === false || $errno !== 0)
+  {
+    throw new RuntimeException('Piwigo-Fallback konnte nicht ausgefuehrt werden: '.$error);
+  }
+  if ($http < 200 || $http >= 300)
+  {
+    throw new RuntimeException('Piwigo-Fallback antwortete mit HTTP '.$http.'.');
+  }
+
+  return (string)$body;
+}
+
+function bratonien_tools_nc_connector_fallback_once()
+{
+  if (!function_exists('curl_init'))
+  {
+    throw new RuntimeException('cURL ist in PHP nicht verfuegbar.');
+  }
+
+  $username = trim((string)($_POST['nc_fallback_user'] ?? ''));
+  $password = (string)($_POST['nc_fallback_password'] ?? '');
+  if ($username === '' || $password === '')
+  {
+    throw new RuntimeException('Benutzername und Passwort fuer den einmaligen Fallback muessen angegeben werden.');
+  }
+
+  $base = rtrim(get_absolute_root_url(true), '/');
+  $cookie_file = tempnam(sys_get_temp_dir(), 'br-nc-fallback-');
+  if ($cookie_file === false)
+  {
+    throw new RuntimeException('Temporare Fallback-Sitzung konnte nicht angelegt werden.');
+  }
+
+  try
+  {
+    $login_body = bratonien_tools_nc_connector_fallback_http_request(
+      $base.'/ws.php?format=json',
+      array(
+        'method'=>'pwg.session.login',
+        'username'=>$username,
+        'password'=>$password,
+      ),
+      $cookie_file
+    );
+    $login = json_decode($login_body, true);
+    if (!is_array($login) || ($login['stat'] ?? '') !== 'ok')
+    {
+      throw new RuntimeException('Piwigo-Anmeldung fuer den einmaligen Fallback wurde abgelehnt.');
+    }
+
+    bratonien_tools_nc_connector_fallback_http_request(
+      $base.'/admin.php?page=site_update&site=1',
+      array(
+        'sync'=>'files',
+        'display_info'=>1,
+        'privacy_level'=>0,
+        'sync_meta'=>1,
+        'simulate'=>0,
+        'subcats-included'=>1,
+        'bratonien_connector'=>1,
+        'submit'=>1,
+      ),
+      $cookie_file
+    );
+
+    $orphan_body = bratonien_tools_nc_connector_fallback_http_request(
+      $base.'/ws.php?format=json',
+      array(
+        'method'=>'bratonien.nc.syncOrphans',
+        'site_id'=>1,
+        'simulate'=>0,
+      ),
+      $cookie_file
+    );
+    $orphan = json_decode($orphan_body, true);
+    if (!is_array($orphan) || ($orphan['stat'] ?? '') !== 'ok')
+    {
+      throw new RuntimeException('Orphan-Synchronisierung im einmaligen Fallback wurde abgelehnt.');
+    }
+  }
+  finally
+  {
+    @unlink($cookie_file);
+  }
+
+  return array('message'=>'Einmaliger Benutzername/Passwort-Fallback wurde ausgefuehrt. Die Zugangsdaten wurden nicht gespeichert.');
+}

include/nc_connector_connection_scope.inc.php

@@ -4,52 +4,196 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
-function bratonien_tools_nc_connector_scoped_secret(array $connection)
+function bratonien_tools_nc_wizard_finish_connection_scoped()
 {
-  $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
-  if ((string)($connection['adapter'] ?? '') !== 'remote' || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder')
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 4 || empty($state['technical_complete']) || trim((string)$state['showcase_user']) === '') throw new RuntimeException('Der Assistent ist noch nicht vollständig.');
+
+  if (array_key_exists('nc_wizard_fallback_user', $_POST)) $state['_fallback_user'] = trim((string)$_POST['nc_wizard_fallback_user']);
+  if (array_key_exists('nc_wizard_fallback_password', $_POST)) $state['_fallback_password'] = (string)$_POST['nc_wizard_fallback_password'];
+  bratonien_tools_nc_wizard_store($state);
+
+  $fallback_user = trim((string)$state['_fallback_user']);
+  $fallback_password = (string)$state['_fallback_password'];
+  if (($fallback_user === '') !== ($fallback_password === '')) throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort müssen entweder beide angegeben oder beide leer gelassen werden.');
+  if ($state['api_status'] !== 'ok' && $fallback_user === '') throw new RuntimeException('Da die Piwigo-API übersprungen wurde, ist für diese Verbindung ein Fallback-Zugang erforderlich.');
+
+  $mapping_lines = array();
+  foreach ((array)$state['storages'] as $storage)
   {
-    throw new RuntimeException('Die Verbindung ist keine WebDAV-Verbindung.');
+    $key = (string)$storage['storage_id'].'|'.trim((string)$storage['source_prefix'], '/').'|'.(string)$storage['local_mount'];
+    $mapping_lines[$key] = (string)$storage['storage_id'].' | '.trim((string)$storage['source_prefix'], '/').' | '.(string)$storage['local_mount'];
   }
 
+  $_POST['nc_name']=(string)$state['connection_name'];
+  $_POST['nc_host']=(string)$state['db_host'];
+  $_POST['nc_port']=(string)$state['db_port'];
+  $_POST['nc_database']=(string)$state['db_database'];
+  $_POST['nc_user']=(string)$state['db_user'];
+  $_POST['nc_db_password']=(string)$state['_db_password'];
+  $_POST['nc_source_view']=(string)$state['source_view'];
+  $_POST['nc_activity_view']=(string)$state['activity_view'];
+  $_POST['nc_gallery_root']=(string)$state['gallery_root'];
+  $_POST['nc_storages']=implode("\n",array_values($mapping_lines));
+  $_POST['nc_quiet_seconds']='120';
+  $_POST['nc_max_wait_seconds']='900';
+  $_POST['nc_full_sync_seconds']='86400';
+  $_POST['nc_piwigo_user']=$fallback_user;
+  $_POST['nc_piwigo_password']=$fallback_password;
+  $_POST['nc_nextcloud_url']=(string)$state['base_url'];
+  $_POST['nc_showcase_user']=(string)$state['showcase_user'];
+  $_POST['nc_access_user']=(string)$state['username'];
+  $_POST['nc_nextcloud_user']=(string)$state['username'];
+  $_POST['nc_nextcloud_password']=(string)$state['_password'];
+  $_POST['nc_product']=(string)$state['product'];
+  $_POST['nc_version']=(string)$state['version'];
+  $_POST['nc_api_validated']=$state['api_status']==='ok'?'1':'0';
+  $_POST['nc_connection_api_key_id']=$state['api_status']==='ok'?(string)$state['_api_key_id']:'';
+  $_POST['nc_connection_api_key_secret']=$state['api_status']==='ok'?(string)$state['_api_key_secret']:'';
+
+  $result = bratonien_tools_nc_connector_create_local_api_first();
+  $connection_id = (int)($result['connection_id'] ?? 0);
+  if ($connection_id < 1) throw new RuntimeException('Die neue Verbindung konnte nicht gespeichert werden.');
+
+  $connection = bratonien_tools_nc_connector_connection($connection_id, false);
+  if (!$connection) throw new RuntimeException('Die neue Verbindung konnte nach dem Anlegen nicht gelesen werden.');
+  $config = $connection['config'];
+  $config['storages'] = array_values($state['storages']);
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Die Verzeichnisauswahl konnte nicht serialisiert werden.');
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$connection_id." LIMIT 1");
+
+  unset($_SESSION['bratonien_nc_wizard']);
+  unset($result['connection_id']);
+  $result['message'] = 'Verbindung wurde vollständig mit eigener Authentifizierung angelegt. '.$result['message'];
+  return $result;
+}
+
+function bratonien_tools_nc_connector_delete_any()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, false);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+
+  $status_dir = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status';
+  if (!is_dir($status_dir) && !@mkdir($status_dir, 0755, true) && !is_dir($status_dir)) throw new RuntimeException('Der Connector-Statusordner konnte nicht angelegt werden.');
+
+  $tombstone = $status_dir.'/deleted-'.$id;
+  if (@file_put_contents($tombstone, date('c')."\n", LOCK_EX) === false) throw new RuntimeException('Die Verbindung konnte nicht sicher für die Laufzeit deaktiviert werden.');
+
+  $public_status = $status_dir.'/connection-'.$id.'.json';
+  if (is_file($public_status)) @unlink($public_status);
+
+  $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
+  $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
+  if ($state_dir !== '' && strpos($state_dir, '/var/lib/bratonien-tools/nc-connector/connection-'.$id) === 0 && file_exists($state_dir))
+  {
+    bratonien_tools_nc_connector_remove_tree($state_dir);
+  }
+
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
+  return array('message'=>'Connector-Verbindung wurde gelöscht und für weitere Laufzeitabrufe gesperrt. Nextcloud- und Piwigo-Bilder blieben unverändert.');
+}
+
+function bratonien_tools_nc_connector_verify_connection_scoped()
+{
+  $result = bratonien_tools_nc_connector_verify_managed();
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) return $result;
+
+  $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
+  if ((string)($config['origin'] ?? '') !== 'native' || array_key_exists('api_enabled', $config)) return $result;
+
+  $credentials = bratonien_tools_nc_connector_credentials_from_blob($connection['secret_blob'] ?? '');
+  $db_password = (string)($credentials['db_password'] ?? '');
+  $fallback_user = (string)($credentials['piwigo_user'] ?? '');
+  $fallback_password = (string)($credentials['piwigo_password'] ?? '');
+  if ($db_password === '') return $result;
+
+  $api_key_id = '';
+  $api_key_secret = '';
+  if ($fallback_user === '')
+  {
+    $legacy_api = bratonien_tools_nc_api_credentials();
+    $api_key_id = trim((string)($legacy_api['key_id'] ?? ''));
+    $api_key_secret = trim((string)($legacy_api['key_secret'] ?? ''));
+  }
+
+  $payload = json_encode(array(
+    'v'=>3,
+    'db_password'=>$db_password,
+    'piwigo_user'=>$fallback_user,
+    'piwigo_password'=>$fallback_password,
+    'api_key_id'=>$api_key_id,
+    'api_key_secret'=>$api_key_secret,
+    'nextcloud_user'=>'',
+    'nextcloud_password'=>'',
+  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($payload)) throw new RuntimeException('Verbindungsauthentifizierung konnte nicht migriert werden.');
+
+  $config['piwigo_auth'] = 'connection-scoped';
+  $config['api_enabled'] = $api_key_id !== '';
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht migriert werden.');
+
+  $blob = bratonien_tools_nc_connector_encrypt_secret($payload);
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($blob)."' WHERE id=".$id." LIMIT 1");
+  return $result;
+}
+
+function bratonien_tools_nc_connector_scoped_secret(array $connection)
+{
   $plain = bratonien_tools_nc_connector_decrypt_secret($connection['secret_blob'] ?? '');
   $decoded = json_decode($plain, true);
-  if (!is_array($decoded))
+  if (is_array($decoded) && array_key_exists('db_password', $decoded))
   {
-    throw new RuntimeException('WebDAV-Zugangsdaten haben ein unbekanntes Format.');
+    return array(
+      'v'=>3,
+      'db_password'=>(string)($decoded['db_password'] ?? ''),
+      'piwigo_user'=>(string)($decoded['piwigo_user'] ?? ''),
+      'piwigo_password'=>(string)($decoded['piwigo_password'] ?? ''),
+      'api_key_id'=>(string)($decoded['api_key_id'] ?? ''),
+      'api_key_secret'=>(string)($decoded['api_key_secret'] ?? ''),
+      'nextcloud_user'=>(string)($decoded['nextcloud_user'] ?? ''),
+      'nextcloud_password'=>(string)($decoded['nextcloud_password'] ?? ''),
+    );
   }
 
   return array(
     'v'=>3,
-    'piwigo_user'=>(string)($decoded['piwigo_user'] ?? ''),
-    'piwigo_password'=>(string)($decoded['piwigo_password'] ?? ''),
-    'api_key_id'=>(string)($decoded['api_key_id'] ?? ''),
-    'api_key_secret'=>(string)($decoded['api_key_secret'] ?? ''),
-    'nextcloud_user'=>(string)($decoded['nextcloud_user'] ?? ''),
-    'nextcloud_password'=>(string)($decoded['nextcloud_password'] ?? ''),
+    'db_password'=>(string)$plain,
+    'piwigo_user'=>'',
+    'piwigo_password'=>'',
+    'api_key_id'=>'',
+    'api_key_secret'=>'',
+    'nextcloud_user'=>'',
+    'nextcloud_password'=>'',
   );
 }
 
 function bratonien_tools_nc_connector_store_scoped_secret($id, array $connection, array $credentials)
 {
   $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
-  if ((string)($connection['adapter'] ?? '') !== 'remote' || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder')
-  {
-    throw new RuntimeException('Die Verbindung ist keine WebDAV-Verbindung.');
-  }
-  if (trim((string)($credentials['nextcloud_user'] ?? '')) === '' || (string)($credentials['nextcloud_password'] ?? '') === '')
+  $is_webdav = (string)($config['source_mode'] ?? '') === 'webdav-placeholder';
+  if (!$is_webdav && trim((string)($credentials['db_password'] ?? '')) === '') throw new RuntimeException('Das Datenbankpasswort der Verbindung fehlt.');
+  if ($is_webdav && (trim((string)($credentials['nextcloud_user'] ?? '')) === '' || (string)($credentials['nextcloud_password'] ?? '') === ''))
   {
     throw new RuntimeException('Die Nextcloud-Zugangsdaten der WebDAV-Verbindung fehlen.');
   }
 
   $credentials['v'] = 3;
-  unset($credentials['db_password']);
   $payload = json_encode($credentials, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
   if (!is_string($payload)) throw new RuntimeException('Verbindungszugangsdaten konnten nicht serialisiert werden.');
   $blob = bratonien_tools_nc_connector_encrypt_secret($payload);
 
-  $config['piwigo_auth'] = 'connection-scoped';
-  $config['api_enabled'] = trim((string)($credentials['api_key_id'] ?? '')) !== '' && trim((string)($credentials['api_key_secret'] ?? '')) !== '';
+  if (array_key_exists('api_enabled', $config))
+  {
+    $config['api_enabled'] = trim((string)($credentials['api_key_id'] ?? '')) !== '' && trim((string)($credentials['api_key_secret'] ?? '')) !== '';
+  }
   $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
   if (!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
 
@@ -67,13 +211,11 @@ function bratonien_tools_nc_connector_fallback_save_scoped()
 
   $connection = bratonien_tools_nc_connector_connection($id, true);
   if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
-  bratonien_tools_nc_connector_validate_fallback_credentials($username, $password);
-
   $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
   $credentials['piwigo_user'] = $username;
   $credentials['piwigo_password'] = $password;
   bratonien_tools_nc_connector_store_scoped_secret($id, $connection, $credentials);
-  return array('message'=>'Piwigo-Benutzername und Passwort wurden als Fallback dieser WebDAV-Verbindung gespeichert.');
+  return array('message'=>'Piwigo-Benutzername und Passwort wurden als Fallback dieser Verbindung gespeichert.');
 }
 
 function bratonien_tools_nc_connector_fallback_delete_scoped()
@@ -81,10 +223,9 @@ function bratonien_tools_nc_connector_fallback_delete_scoped()
   $id = (int)($_POST['connection_id'] ?? 0);
   $connection = bratonien_tools_nc_connector_connection($id, true);
   if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
-
   $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
   $credentials['piwigo_user'] = '';
   $credentials['piwigo_password'] = '';
   bratonien_tools_nc_connector_store_scoped_secret($id, $connection, $credentials);
-  return array('message'=>'Fallback dieser WebDAV-Verbindung wurde gelöscht. Ein vorhandener API-Zugang blieb unverändert.');
+  return array('message'=>'Fallback dieser Verbindung wurde gelöscht. Ein vorhandener API-Zugang blieb unverändert.');
 }

include/nc_connector_create_api.inc.php

@@ -0,0 +1,133 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_connector_create_local_api_first()
+{
+  throw new RuntimeException('Neue Verbindungen über die alte lokale PostgreSQL-/Storage-Struktur sind ab 0.9.6.2 gesperrt. Bestehende lokale Verbindungen bleiben für die schrittweise Migration weiterhin aktiv. Neue Verbindungen müssen über den WebDAV-Assistenten angelegt werden.');
+}
+
+function bratonien_tools_nc_connector_create_local_api_first_legacy()
+{
+  $required = array(
+    'nc_name' => 'Name',
+    'nc_host' => 'PostgreSQL-Host',
+    'nc_database' => 'Datenbank',
+    'nc_user' => 'Reader-Benutzer',
+    'nc_db_password' => 'Reader-Passwort',
+    'nc_source_view' => 'Source-View',
+    'nc_activity_view' => 'Activity-View',
+    'nc_gallery_root' => 'Galerie-Pfad',
+  );
+  foreach ($required as $field => $label)
+  {
+    if (trim((string)($_POST[$field] ?? '')) === '') throw new RuntimeException($label.' fehlt.');
+  }
+
+  $fallback_user = trim((string)($_POST['nc_piwigo_user'] ?? ''));
+  $fallback_password = (string)($_POST['nc_piwigo_password'] ?? '');
+  if (($fallback_user === '') !== ($fallback_password === ''))
+  {
+    throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort muessen entweder beide angegeben oder beide leer gelassen werden.');
+  }
+
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? $_POST['nc_access_user'] ?? ''));
+  $nextcloud_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  if (($nextcloud_user === '') !== ($nextcloud_password === ''))
+  {
+    throw new RuntimeException('Nextcloud-Benutzer und Nextcloud-Passwort muessen entweder beide vorhanden oder beide leer sein.');
+  }
+
+  $wizard_auth_present = array_key_exists('nc_api_validated', $_POST);
+  $validated_pending_api = (string)($_POST['nc_api_validated'] ?? '') === '1';
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ''));
+  $api_key_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    throw new RuntimeException('API-Schluessel-ID und API-Geheimnis muessen entweder beide vorhanden oder beide leer sein.');
+  }
+  if (($validated_pending_api || (!$wizard_auth_present && $fallback_user === '')) && $api_key_id === '')
+  {
+    $legacy_api = bratonien_tools_nc_api_credentials();
+    $api_key_id = trim((string)($legacy_api['key_id'] ?? ''));
+    $api_key_secret = trim((string)($legacy_api['key_secret'] ?? ''));
+  }
+  if ($api_key_id === '' && $fallback_user === '')
+  {
+    throw new RuntimeException('Fuer diese Verbindung ist weder ein eigener gepruefter API-Zugang noch ein Benutzername/Passwort-Fallback vorhanden.');
+  }
+
+  $port = (int)($_POST['nc_port'] ?? 5432);
+  if ($port < 1 || $port > 65535) throw new RuntimeException('Ungueltiger PostgreSQL-Port.');
+
+  $gallery_root = rtrim(trim((string)$_POST['nc_gallery_root']), '/');
+  if (strpos($gallery_root, './') === 0)
+  {
+    $piwigo_root = realpath(PHPWG_ROOT_PATH);
+    if ($piwigo_root === false) throw new RuntimeException('Piwigo-Stammverzeichnis konnte nicht aufgeloest werden.');
+    $gallery_root = rtrim($piwigo_root, '/').'/'.ltrim(substr($gallery_root, 2), '/');
+  }
+  if ($gallery_root === '' || $gallery_root[0] !== '/') throw new RuntimeException('Der Galerie-Pfad muss ein absoluter Pfad sein.');
+
+  $config = array(
+    'host'=>trim((string)$_POST['nc_host']),
+    'port'=>(string)$port,
+    'database'=>trim((string)$_POST['nc_database']),
+    'user'=>trim((string)$_POST['nc_user']),
+    'source_view'=>trim((string)$_POST['nc_source_view']),
+    'activity_view'=>trim((string)$_POST['nc_activity_view']),
+    'gallery_root'=>$gallery_root,
+    'state_dir'=>'','status_file'=>'',
+    'quiet_seconds'=>max(0,(int)($_POST['nc_quiet_seconds'] ?? 120)),
+    'max_wait_seconds'=>max(60,(int)($_POST['nc_max_wait_seconds'] ?? 900)),
+    'full_sync_seconds'=>max(300,(int)($_POST['nc_full_sync_seconds'] ?? 86400)),
+    'storages'=>bratonien_tools_nc_connector_parse_storages($_POST['nc_storages'] ?? ''),
+    'origin'=>'native',
+    'piwigo_auth'=>'connection-scoped',
+    'api_enabled'=>$api_key_id !== '',
+  );
+  foreach (array('nextcloud_url'=>'nc_nextcloud_url','showcase_user'=>'nc_showcase_user','nextcloud_access_user'=>'nc_access_user','nextcloud_product'=>'nc_product','nextcloud_version'=>'nc_version') as $config_key=>$post_key)
+  {
+    $value=trim((string)($_POST[$post_key] ?? '')); if($value!=='') $config[$config_key]=$value;
+  }
+  bratonien_tools_nc_connector_view_name($config['source_view']);
+  bratonien_tools_nc_connector_view_name($config['activity_view']);
+
+  $secret_payload = json_encode(array(
+    'v'=>3,
+    'db_password'=>(string)$_POST['nc_db_password'],
+    'piwigo_user'=>$fallback_user,
+    'piwigo_password'=>$fallback_password,
+    'api_key_id'=>$api_key_id,
+    'api_key_secret'=>$api_key_secret,
+    'nextcloud_user'=>$nextcloud_user,
+    'nextcloud_password'=>$nextcloud_password,
+  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($secret_payload)) throw new RuntimeException('Connector-Zugangsdaten konnten nicht serialisiert werden.');
+  $secret_blob = bratonien_tools_nc_connector_encrypt_secret($secret_payload);
+
+  $table=bratonien_tools_nc_connector_table(); bratonien_tools_nc_connector_ensure_table(); $now=date('Y-m-d H:i:s');
+  $connection_key='local-'.bin2hex(random_bytes(12));
+  $config_json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
+  if(!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
+
+  pwg_query("INSERT INTO `$table` (connection_key, name, adapter, enabled, takeover_state, config_json, secret_blob, created, updated) VALUES ('".pwg_db_real_escape_string($connection_key)."','".pwg_db_real_escape_string(trim((string)$_POST['nc_name']))."','local',0,'disabled','".pwg_db_real_escape_string($config_json)."','".pwg_db_real_escape_string($secret_blob)."','".pwg_db_real_escape_string($now)."','".pwg_db_real_escape_string($now)."')");
+  $id=(int)pwg_db_insert_id();
+  if($id<1) throw new RuntimeException('Die Connector-Verbindung konnte nicht eindeutig angelegt werden.');
+  $config['state_dir']='/var/lib/bratonien-tools/nc-connector/connection-'.$id;
+  $config['status_file']=$config['state_dir'].'/connector-status.json';
+  $config_json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
+  if(!is_string($config_json))
+  {
+    pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
+    throw new RuntimeException('Connector-Konfiguration konnte nach dem Anlegen nicht serialisiert werden.');
+  }
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id);
+
+  return array(
+    'connection_id'=>$id,
+    'message'=>'Nextcloud-Verbindung wurde mit verbindungseigener Piwigo-Authentifizierung angelegt.'
+  );
+}

include/nc_connector_edit.inc.php

@@ -0,0 +1,338 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_connector_migration_state(array $connection)
+{
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  $missing = array();
+
+  if (trim((string)($config['nextcloud_url'] ?? '')) === '') $missing[] = 'Nextcloud-Adresse';
+  if (trim((string)($credentials['nextcloud_user'] ?? '')) === '') $missing[] = 'Nextcloud-Benutzer';
+  if ((string)($credentials['nextcloud_password'] ?? '') === '') $missing[] = 'Nextcloud-Passwort';
+  if (trim((string)($credentials['api_key_id'] ?? '')) === '') $missing[] = 'Piwigo-API-Schluessel-ID';
+  if (trim((string)($credentials['api_key_secret'] ?? '')) === '') $missing[] = 'Piwigo-API-Geheimnis';
+
+  return array(
+    'ready'=>!$missing,
+    'missing'=>$missing,
+  );
+}
+
+function bratonien_tools_nc_connector_validate_nextcloud_access($base_url, $username, $password)
+{
+  $base_url = bratonien_tools_nc_wizard_normalize_url($base_url);
+  $username = trim((string)$username);
+  $password = (string)$password;
+  if ($username === '' || $password === '') throw new RuntimeException('Nextcloud-Benutzer und Passwort werden benoetigt.');
+
+  $status_response = bratonien_tools_nc_wizard_http($base_url.'/status.php');
+  if ($status_response['status'] < 200 || $status_response['status'] >= 300)
+  {
+    throw new RuntimeException('Die Nextcloud-Adresse konnte nicht bestaetigt werden.');
+  }
+  $status = json_decode((string)$status_response['body'], true);
+  if (!is_array($status) || empty($status['installed']))
+  {
+    throw new RuntimeException('Unter dieser Adresse wurde keine installierte Nextcloud erkannt.');
+  }
+
+  $user_response = bratonien_tools_nc_wizard_http(
+    $base_url.'/ocs/v2.php/cloud/user?format=json',
+    $username,
+    $password,
+    array('OCS-APIRequest: true')
+  );
+  if ($user_response['status'] === 401 || $user_response['status'] === 403)
+  {
+    throw new RuntimeException('Nextcloud hat Benutzername oder Passwort abgelehnt.');
+  }
+  if ($user_response['status'] < 200 || $user_response['status'] >= 300)
+  {
+    throw new RuntimeException('Nextcloud ist erreichbar, aber der Benutzerzugang konnte nicht geprueft werden.');
+  }
+  $user_data = bratonien_tools_nc_wizard_ocs_data($user_response['body']);
+  $resolved = trim((string)($user_data['id'] ?? $username));
+
+  return array(
+    'base_url'=>$base_url,
+    'username'=>$resolved !== '' ? $resolved : $username,
+  );
+}
+
+function bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret)
+{
+  $api_key_id = trim((string)$api_key_id);
+  $api_key_secret = trim((string)$api_key_secret);
+  if ($api_key_id === '' || $api_key_secret === '')
+  {
+    throw new RuntimeException('Piwigo-API-Schluessel-ID und API-Geheimnis werden benoetigt.');
+  }
+
+  $status = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'pwg.session.getStatus');
+  if (!is_array($status)) throw new RuntimeException('Piwigo hat keinen auswertbaren API-Benutzerstatus geliefert.');
+  $role = strtolower(trim((string)($status['status'] ?? '')));
+  if (!in_array($role, array('admin','webmaster'), true))
+  {
+    throw new RuntimeException('Der API-Key funktioniert, gehoert aber keinem Piwigo-Administrator/Webmaster.');
+  }
+
+  $method_result = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'reflection.getMethodList');
+  $method_map = array();
+  bratonien_tools_nc_connector_collect_method_names($method_result, $method_map);
+  $required = array('bratonien.nc.syncProductive', 'bratonien.nc.syncOrphans');
+  $missing = array_values(array_diff($required, array_keys($method_map)));
+  if ($missing)
+  {
+    throw new RuntimeException('Der API-Key ist gueltig, aber benoetigte Bratonien-Sync-Methoden fehlen: '.implode(', ', $missing).'.');
+  }
+}
+
+function bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection(array $connection, $mode)
+{
+  $id = (int)$connection['id'];
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $base_url = trim((string)($config['nextcloud_url'] ?? ''));
+  $username = trim((string)($credentials['nextcloud_user'] ?? ''));
+  if ($username === '')
+  {
+    $username = trim((string)($config['nextcloud_access_user'] ?? $config['access_user'] ?? ''));
+  }
+  $password = (string)($credentials['nextcloud_password'] ?? '');
+
+  $roots = isset($config['roots']) && is_array($config['roots']) ? array_values($config['roots']) : array();
+  $selected = array();
+  $selected_ids = array();
+  foreach ($roots as $root)
+  {
+    $path = trim((string)($root['webdav_path'] ?? ''), '/');
+    $fileid = (int)($root['fileid'] ?? 0);
+    if ($path === '' || $fileid < 1) continue;
+    $selected[] = $path;
+    $selected_ids[$path] = $fileid;
+  }
+
+  $state = bratonien_tools_nc_wizard_state();
+  $state = array_merge($state, array(
+    'editing_connection_id'=>$id,
+    'editing_adapter'=>(string)$connection['adapter'],
+    'editing_mode'=>(string)$mode,
+    'connection_name'=>(string)$connection['name'],
+    'host_input'=>$base_url,
+    'base_url'=>$base_url,
+    'username'=>$username,
+    '_password'=>$password,
+    '_fallback_user'=>(string)($credentials['piwigo_user'] ?? ''),
+    '_fallback_password'=>(string)($credentials['piwigo_password'] ?? ''),
+    '_api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
+    '_api_key_secret'=>(string)($credentials['api_key_secret'] ?? ''),
+    'api_status'=>trim((string)($credentials['api_key_id'] ?? '')) !== '' && trim((string)($credentials['api_key_secret'] ?? '')) !== '' ? 'ok' : 'pending',
+    'roots'=>$roots,
+    'directory_selected'=>$selected,
+    'directory_selected_fileids'=>$selected_ids,
+    'source_mode'=>'webdav-placeholder',
+    'transport'=>'webdav',
+  ));
+
+  if ($base_url !== '' && $username !== '' && $password !== '')
+  {
+    $state['step'] = 2;
+    $state['scan_ok'] = true;
+    $state['technical_stage'] = 'mounts';
+    $state['technical_source'] = 'WebDAV';
+    $state['technical_error'] = '';
+    $state['technical_complete'] = false;
+    $state['directory_selection_ready'] = true;
+    $state['directory_path'] = '';
+    $state['directory_parent'] = '';
+    $state['directory_children'] = array();
+    $state['directory_current_fileid'] = 0;
+
+    try
+    {
+      bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    }
+    catch (Throwable $e)
+    {
+      $state['step'] = 1;
+      $state['scan_ok'] = false;
+      $state['technical_error'] = $e->getMessage();
+    }
+  }
+  else
+  {
+    $state['step'] = 1;
+    $state['scan_ok'] = false;
+  }
+
+  bratonien_tools_nc_wizard_store($state);
+}
+
+function bratonien_tools_nc_connector_edit_start()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $is_webdav = (string)$connection['adapter'] === 'remote'
+    && (string)($config['source_mode'] ?? '') === 'webdav-placeholder';
+  if (!$is_webdav)
+  {
+    throw new RuntimeException('Diese Legacy-Verbindung wird direkt bearbeitet. Eine WebDAV-Migration ist eine separate Aktion.');
+  }
+
+  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'update');
+  return array('message'=>'Verbindung #'.$id.' wurde zum Bearbeiten geoeffnet.');
+}
+
+function bratonien_tools_nc_connector_migrate_start()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  if ((string)$connection['adapter'] !== 'local')
+  {
+    throw new RuntimeException('Nur eine Legacy-Verbindung kann auf WebDAV migriert werden.');
+  }
+
+  $migration = bratonien_tools_nc_connector_migration_state($connection);
+  if (empty($migration['ready']))
+  {
+    throw new RuntimeException('Die WebDAV-Migration ist noch nicht bereit. Unter Bearbeiten fehlen: '.implode(', ', $migration['missing']).'.');
+  }
+
+  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'migrate');
+  return array('message'=>'Die WebDAV-Migration fuer Verbindung #'.$id.' wurde geoeffnet. Die bestehende Legacy-Verbindung bleibt bis zum erfolgreichen Umstieg unveraendert.');
+}
+
+function bratonien_tools_nc_connector_update_local_friendly()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  if ((string)$connection['adapter'] !== 'local') throw new RuntimeException('Diese Bearbeitung ist nur fuer Legacy-Verbindungen vorgesehen.');
+
+  $name = trim((string)($_POST['connection_name'] ?? ''));
+  if ($name === '') throw new RuntimeException('Bitte einen Namen fuer die Verbindung angeben.');
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $host = trim((string)($_POST['nc_host'] ?? ''));
+  $port = (int)($_POST['nc_port'] ?? 5432);
+  $database = trim((string)($_POST['nc_database'] ?? ''));
+  $user = trim((string)($_POST['nc_user'] ?? ''));
+  $gallery_root = rtrim(trim((string)($_POST['nc_gallery_root'] ?? '')), '/');
+  $source_view = trim((string)($_POST['nc_source_view'] ?? ''));
+  $activity_view = trim((string)($_POST['nc_activity_view'] ?? ''));
+
+  if ($host === '') throw new RuntimeException('Datenbank-Server fehlt.');
+  if ($port < 1 || $port > 65535) throw new RuntimeException('Der Datenbank-Port ist ungueltig.');
+  if ($database === '') throw new RuntimeException('Datenbankname fehlt.');
+  if ($user === '') throw new RuntimeException('Reader-Benutzer fehlt.');
+  if ($gallery_root === '' || $gallery_root[0] !== '/') throw new RuntimeException('Der Piwigo-Galerieordner muss ein absoluter Pfad sein.');
+  if ($source_view === '' || $activity_view === '') throw new RuntimeException('Die gespeicherten Datenbankansichten duerfen nicht leer sein.');
+  bratonien_tools_nc_connector_view_name($source_view);
+  bratonien_tools_nc_connector_view_name($activity_view);
+
+  $storage_ids = isset($_POST['nc_storage_id']) && is_array($_POST['nc_storage_id']) ? $_POST['nc_storage_id'] : array();
+  $storage_prefixes = isset($_POST['nc_source_prefix']) && is_array($_POST['nc_source_prefix']) ? $_POST['nc_source_prefix'] : array();
+  $storage_mounts = isset($_POST['nc_local_mount']) && is_array($_POST['nc_local_mount']) ? $_POST['nc_local_mount'] : array();
+  $storages = array();
+  $count = max(count($storage_ids), count($storage_prefixes), count($storage_mounts));
+  for ($index = 0; $index < $count; $index++)
+  {
+    $storage_id = trim((string)($storage_ids[$index] ?? ''));
+    $prefix = trim((string)($storage_prefixes[$index] ?? ''), '/');
+    $mount = rtrim(trim((string)($storage_mounts[$index] ?? '')), '/');
+    if ($storage_id === '' && $prefix === '' && $mount === '') continue;
+    if ($storage_id === '') throw new RuntimeException('Bei einem Speicherort fehlt die Storage-ID.');
+    if ($mount === '' || $mount[0] !== '/') throw new RuntimeException('Bei einem Speicherort fehlt ein gueltiger lokaler Pfad.');
+    $storages[] = array('storage_id'=>$storage_id, 'source_prefix'=>$prefix, 'local_mount'=>$mount);
+  }
+  if (!$storages) throw new RuntimeException('Mindestens ein Speicherort muss vorhanden sein.');
+
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  $new_db_password = (string)($_POST['nc_db_password'] ?? '');
+  if ($new_db_password !== '') $credentials['db_password'] = $new_db_password;
+  if (trim((string)($credentials['db_password'] ?? '')) === '') throw new RuntimeException('Fuer die Legacy-Verbindung ist kein Datenbankpasswort gespeichert.');
+
+  $nextcloud_url = trim((string)($_POST['nc_nextcloud_url'] ?? ($config['nextcloud_url'] ?? '')));
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? ($credentials['nextcloud_user'] ?? '')));
+  $new_nextcloud_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  if ($new_nextcloud_password !== '') $credentials['nextcloud_password'] = $new_nextcloud_password;
+  $nextcloud_password = (string)($credentials['nextcloud_password'] ?? '');
+
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ($credentials['api_key_id'] ?? '')));
+  $new_api_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  $old_api_id = trim((string)($credentials['api_key_id'] ?? ''));
+  if ($api_key_id !== $old_api_id && $new_api_secret === '')
+  {
+    throw new RuntimeException('Wenn die API-Schluessel-ID geaendert wird, muss auch das API-Geheimnis neu eingegeben werden.');
+  }
+  if ($new_api_secret !== '') $credentials['api_key_secret'] = $new_api_secret;
+  $api_key_secret = trim((string)($credentials['api_key_secret'] ?? ''));
+
+  if (($nextcloud_url === '' || $nextcloud_user === '' || $nextcloud_password === '') && ($nextcloud_url !== '' || $nextcloud_user !== '' || $nextcloud_password !== ''))
+  {
+    throw new RuntimeException('Nextcloud-Adresse, Nextcloud-Benutzer und Nextcloud-Passwort muessen fuer WebDAV gemeinsam vollstaendig sein.');
+  }
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    throw new RuntimeException('Piwigo-API-Schluessel-ID und API-Geheimnis muessen gemeinsam vollstaendig sein.');
+  }
+
+  if ($nextcloud_url !== '')
+  {
+    $validated_nc = bratonien_tools_nc_connector_validate_nextcloud_access($nextcloud_url, $nextcloud_user, $nextcloud_password);
+    $nextcloud_url = $validated_nc['base_url'];
+    $nextcloud_user = $validated_nc['username'];
+    $credentials['nextcloud_user'] = $nextcloud_user;
+  }
+  if ($api_key_id !== '')
+  {
+    bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret);
+    $credentials['api_key_id'] = $api_key_id;
+  }
+
+  $config['host'] = $host;
+  $config['port'] = (string)$port;
+  $config['database'] = $database;
+  $config['user'] = $user;
+  $config['source_view'] = $source_view;
+  $config['activity_view'] = $activity_view;
+  $config['gallery_root'] = $gallery_root;
+  $config['quiet_seconds'] = max(0, (int)($_POST['nc_quiet_seconds'] ?? ($config['quiet_seconds'] ?? 120)));
+  $config['max_wait_seconds'] = max(60, (int)($_POST['nc_max_wait_seconds'] ?? ($config['max_wait_seconds'] ?? 900)));
+  $config['full_sync_seconds'] = max(300, (int)($_POST['nc_full_sync_seconds'] ?? ($config['full_sync_seconds'] ?? 86400)));
+  $config['storages'] = $storages;
+  if ($nextcloud_url !== '')
+  {
+    $config['nextcloud_url'] = $nextcloud_url;
+    $config['access_user'] = $nextcloud_user;
+    $config['nextcloud_access_user'] = $nextcloud_user;
+  }
+  $config['piwigo_auth'] = 'connection-scoped';
+  $config['api_enabled'] = $api_key_id !== '' && $api_key_secret !== '';
+  unset($config['verification']);
+
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
+  $secret_payload = json_encode($credentials, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($secret_payload)) throw new RuntimeException('Connector-Zugangsdaten konnten nicht serialisiert werden.');
+  $secret_blob = bratonien_tools_nc_connector_encrypt_secret($secret_payload);
+
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id." LIMIT 1");
+
+  $updated = bratonien_tools_nc_connector_connection($id, true);
+  $migration = $updated ? bratonien_tools_nc_connector_migration_state($updated) : array('ready'=>false);
+  return array(
+    'message'=>'Verbindung #'.$id.' wurde gespeichert. '.(!empty($migration['ready']) ? 'Die WebDAV-Migration ist jetzt bereit.' : 'Die WebDAV-Migration ist noch nicht vollstaendig vorbereitet.'),
+  );
+}

include/nc_connector_generic_scope.inc.php

@@ -0,0 +1,101 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_finish_generic_scope()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)($state['step'] ?? 0) !== 4 || empty($state['technical_complete']) || trim((string)($state['username'] ?? '')) === '')
+  {
+    throw new RuntimeException('Der Assistent ist noch nicht vollständig.');
+  }
+
+  $roots = isset($state['roots']) && is_array($state['roots']) ? $state['roots'] : array();
+  $storages = isset($state['storages']) && is_array($state['storages']) ? $state['storages'] : array();
+  if (!$roots) throw new RuntimeException('Es wurden keine Nextcloud-Quellen ausgewählt.');
+  if (!$storages) throw new RuntimeException('Es wurden keine Storage-Adapter zugeordnet.');
+
+  if (array_key_exists('nc_wizard_fallback_user', $_POST)) $state['_fallback_user'] = trim((string)$_POST['nc_wizard_fallback_user']);
+  if (array_key_exists('nc_wizard_fallback_password', $_POST)) $state['_fallback_password'] = (string)$_POST['nc_wizard_fallback_password'];
+  bratonien_tools_nc_wizard_store($state);
+
+  $fallback_user = trim((string)$state['_fallback_user']);
+  $fallback_password = (string)$state['_fallback_password'];
+  if (($fallback_user === '') !== ($fallback_password === '')) throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort müssen entweder beide angegeben oder beide leer gelassen werden.');
+  if (($state['api_status'] ?? '') !== 'ok' && $fallback_user === '') throw new RuntimeException('Da die Piwigo-API übersprungen wurde, ist für diese Verbindung ein Fallback-Zugang erforderlich.');
+
+  $mapping_lines = array();
+  foreach ($storages as $storage)
+  {
+    $storage_id = trim((string)($storage['storage_id'] ?? ''));
+    $source_prefix = trim((string)($storage['source_prefix'] ?? ''), '/');
+    $local_mount = rtrim(trim((string)($storage['local_mount'] ?? '')), '/');
+    if ($storage_id === '' || $local_mount === '') throw new RuntimeException('Eine Storage-Zuordnung ist unvollständig.');
+    $key = $storage_id.'|'.$source_prefix.'|'.$local_mount;
+    $mapping_lines[$key] = $storage_id.' | '.$source_prefix.' | '.$local_mount;
+  }
+
+  $_POST['nc_name']=(string)$state['connection_name'];
+  $_POST['nc_host']=(string)$state['db_host'];
+  $_POST['nc_port']=(string)$state['db_port'];
+  $_POST['nc_database']=(string)$state['db_database'];
+  $_POST['nc_user']=(string)$state['db_user'];
+  $_POST['nc_db_password']=(string)$state['_db_password'];
+  $_POST['nc_source_view']='piwigo_connector_files';
+  $_POST['nc_activity_view']='piwigo_connector_activity';
+  $_POST['nc_gallery_root']=(string)$state['gallery_root'];
+  $_POST['nc_storages']=implode("\n", array_values($mapping_lines));
+  $_POST['nc_quiet_seconds']='120';
+  $_POST['nc_max_wait_seconds']='900';
+  $_POST['nc_full_sync_seconds']='86400';
+  $_POST['nc_piwigo_user']=$fallback_user;
+  $_POST['nc_piwigo_password']=$fallback_password;
+  $_POST['nc_nextcloud_url']=(string)$state['base_url'];
+  $_POST['nc_access_user']=(string)$state['username'];
+  $_POST['nc_nextcloud_user']=(string)$state['username'];
+  $_POST['nc_nextcloud_password']=(string)$state['_password'];
+  $_POST['nc_product']=(string)$state['product'];
+  $_POST['nc_version']=(string)$state['version'];
+  $_POST['nc_api_validated']=($state['api_status'] ?? '')==='ok'?'1':'0';
+  $_POST['nc_connection_api_key_id']=($state['api_status'] ?? '')==='ok'?(string)$state['_api_key_id']:'';
+  $_POST['nc_connection_api_key_secret']=($state['api_status'] ?? '')==='ok'?(string)$state['_api_key_secret']:'';
+
+  $result = bratonien_tools_nc_connector_create_local_api_first();
+  $connection_id = (int)($result['connection_id'] ?? 0);
+  if ($connection_id < 1) throw new RuntimeException('Die neue Verbindung konnte nicht gespeichert werden.');
+
+  $connection = bratonien_tools_nc_connector_connection($connection_id, false);
+  if (!$connection) throw new RuntimeException('Die neue Verbindung konnte nach dem Anlegen nicht gelesen werden.');
+  $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
+  $config['source_mode'] = 'selected-fileids';
+  $config['source_view'] = 'piwigo_connector_files';
+  $config['activity_view'] = 'piwigo_connector_activity';
+  $config['access_user'] = (string)$state['username'];
+  $config['nextcloud_access_user'] = (string)$state['username'];
+  $config['storages'] = array_values($storages);
+  $config['roots'] = array_values(array_map(function($root) {
+    return array(
+      'fileid'=>(int)($root['fileid'] ?? 0),
+      'display_name'=>(string)($root['display_name'] ?? ''),
+      'webdav_path'=>(string)($root['webdav_path'] ?? ''),
+    );
+  }, $roots));
+  unset($config['showcase_user']);
+
+  foreach ($config['roots'] as $root)
+  {
+    if ((int)$root['fileid'] < 1 || trim((string)$root['display_name']) === '') throw new RuntimeException('Eine ausgewählte Nextcloud-Quelle ist unvollständig.');
+  }
+
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Die Quellenkonfiguration konnte nicht serialisiert werden.');
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$connection_id." LIMIT 1");
+
+  unset($_SESSION['bratonien_nc_wizard']);
+  unset($result['connection_id']);
+  $result['message'] = 'Verbindung wurde mit generischer Nextcloud-Quellenauswahl angelegt. '.$result['message'];
+  return $result;
+}

include/nc_connector_manage.inc.php

@@ -0,0 +1,107 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_connector_credentials_from_blob($blob)
+{
+  $plain = bratonien_tools_nc_connector_decrypt_secret($blob);
+  if ($plain === '') return array('db_password'=>'', 'piwigo_user'=>'', 'piwigo_password'=>'');
+  $decoded = json_decode($plain, true);
+  if (is_array($decoded) && isset($decoded['db_password']))
+  {
+    return array(
+      'db_password'=>(string)($decoded['db_password'] ?? ''),
+      'piwigo_user'=>(string)($decoded['piwigo_user'] ?? ''),
+      'piwigo_password'=>(string)($decoded['piwigo_password'] ?? ''),
+    );
+  }
+  return array('db_password'=>$plain, 'piwigo_user'=>'', 'piwigo_password'=>'');
+}
+
+function bratonien_tools_nc_connector_encrypt_credentials($db_password, $piwigo_user, $piwigo_password)
+{
+  $payload=json_encode(array('v'=>1,'db_password'=>(string)$db_password,'piwigo_user'=>(string)$piwigo_user,'piwigo_password'=>(string)$piwigo_password),JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
+  if(!is_string($payload)) throw new RuntimeException('Connector-Zugangsdaten konnten nicht serialisiert werden.');
+  return bratonien_tools_nc_connector_encrypt_secret($payload);
+}
+
+function bratonien_tools_nc_connector_parse_storages($raw)
+{
+  $storages=array();
+  $lines=preg_split('/\r\n|\r|\n/',trim((string)$raw));
+  foreach($lines as $line)
+  {
+    if(trim($line)==='') continue;
+    $parts=array_map('trim',explode('|',$line,3));
+    if(count($parts)!==3 || $parts[0]==='' || $parts[2]==='')
+    {
+      throw new RuntimeException('Eine Speicherzuordnung ist unvollständig. Benötigt werden Storage-ID und lokaler Speicherpfad.');
+    }
+    if($parts[2][0]!=='/') throw new RuntimeException('Der lokale Speicherpfad muss ein absoluter Pfad sein.');
+    $storages[]=array(
+      'storage_id'=>$parts[0],
+      'source_prefix'=>trim($parts[1],'/'),
+      'local_mount'=>rtrim($parts[2],'/'),
+    );
+  }
+  if(!$storages) throw new RuntimeException('Mindestens ein Speicherort muss zugeordnet werden.');
+  return $storages;
+}
+
+function bratonien_tools_nc_connector_create_local()
+{
+  $required=array('nc_name'=>'Name','nc_host'=>'PostgreSQL-Host','nc_database'=>'Datenbank','nc_user'=>'Reader-Benutzer','nc_db_password'=>'Reader-Passwort','nc_source_view'=>'Source-View','nc_activity_view'=>'Activity-View','nc_gallery_root'=>'Galerie-Pfad','nc_piwigo_user'=>'Piwigo-Benutzer','nc_piwigo_password'=>'Piwigo-Passwort');
+  foreach($required as $field=>$label)if(trim((string)($_POST[$field]??''))==='')throw new RuntimeException($label.' fehlt.');
+  $port=(int)($_POST['nc_port']??5432);if($port<1||$port>65535)throw new RuntimeException('Ungueltiger PostgreSQL-Port.');
+  $gallery_root=rtrim(trim((string)$_POST['nc_gallery_root']),'/');if($gallery_root===''||$gallery_root[0]!=='/')throw new RuntimeException('Der Galerie-Pfad muss ein absoluter Pfad sein.');
+  $config=array('host'=>trim((string)$_POST['nc_host']),'port'=>(string)$port,'database'=>trim((string)$_POST['nc_database']),'user'=>trim((string)$_POST['nc_user']),'source_view'=>trim((string)$_POST['nc_source_view']),'activity_view'=>trim((string)$_POST['nc_activity_view']),'gallery_root'=>$gallery_root,'state_dir'=>'','status_file'=>'','quiet_seconds'=>max(0,(int)($_POST['nc_quiet_seconds']??120)),'max_wait_seconds'=>max(60,(int)($_POST['nc_max_wait_seconds']??900)),'full_sync_seconds'=>max(300,(int)($_POST['nc_full_sync_seconds']??86400)),'storages'=>bratonien_tools_nc_connector_parse_storages($_POST['nc_storages']??''),'origin'=>'native');
+  bratonien_tools_nc_connector_view_name($config['source_view']);bratonien_tools_nc_connector_view_name($config['activity_view']);
+  $table=bratonien_tools_nc_connector_table();bratonien_tools_nc_connector_ensure_table();$now=date('Y-m-d H:i:s');$connection_key='local-'.bin2hex(random_bytes(12));$secret_blob=bratonien_tools_nc_connector_encrypt_credentials((string)$_POST['nc_db_password'],trim((string)$_POST['nc_piwigo_user']),(string)$_POST['nc_piwigo_password']);$config_json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);if(!is_string($config_json))throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
+  pwg_query("INSERT INTO `$table` (connection_key,name,adapter,enabled,takeover_state,config_json,secret_blob,created,updated) VALUES ('".pwg_db_real_escape_string($connection_key)."','".pwg_db_real_escape_string(trim((string)$_POST['nc_name']))."','local',0,'disabled','".pwg_db_real_escape_string($config_json)."','".pwg_db_real_escape_string($secret_blob)."','".pwg_db_real_escape_string($now)."','".pwg_db_real_escape_string($now)."')");
+  $id=(int)pwg_db_insert_id();$config['state_dir']='/var/lib/bratonien-tools/nc-connector/connection-'.$id;$config['status_file']=$config['state_dir'].'/connector-status.json';$config_json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id);
+  return array('message'=>'Nextcloud-Verbindung wurde angelegt. Bitte zuerst technisch pruefen und danach im LXC aktivieren.');
+}
+
+function bratonien_tools_nc_connector_verify_managed()
+{
+  $id=isset($_POST['connection_id'])?(int)$_POST['connection_id']:0;$connection=bratonien_tools_nc_connector_connection($id,true);if(!$connection)throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');if((string)$connection['adapter']!=='local')throw new RuntimeException('Diese Verifikation ist derzeit nur fuer lokale Connector-Verbindungen verfuegbar.');
+  $config=$connection['config'];foreach(array('host','port','database','user','source_view','activity_view') as $key)if(trim((string)($config[$key]??''))==='')throw new RuntimeException('Connector-Konfiguration ist unvollstaendig: '.$key.' fehlt.');
+  $credentials=bratonien_tools_nc_connector_credentials_from_blob($connection['secret_blob']??'');if($credentials['db_password']==='')throw new RuntimeException('Fuer diese Verbindung ist kein Datenbankpasswort gespeichert.');
+  $checks=array();$ok=true;$source_count=null;
+  try{bratonien_tools_nc_connector_psql($config,$credentials['db_password'],'SELECT 1');$checks[]=array('name'=>'PostgreSQL-Verbindung','ok'=>true,'detail'=>'Reader-Anmeldung erfolgreich');}catch(Throwable $e){$checks[]=array('name'=>'PostgreSQL-Verbindung','ok'=>false,'detail'=>$e->getMessage());$ok=false;}
+  if($ok)
+  {
+    try{$source_view=bratonien_tools_nc_connector_view_name($config['source_view']);$value=bratonien_tools_nc_connector_psql($config,$credentials['db_password'],'SELECT COUNT(*) FROM '.$source_view);if(!preg_match('/^\d+$/',$value))throw new RuntimeException('Source-View lieferte keinen gueltigen Zaehler.');$source_count=(int)$value;$checks[]=array('name'=>'Source-View','ok'=>true,'detail'=>$source_count.' Quelle(n) lesbar');}catch(Throwable $e){$checks[]=array('name'=>'Source-View','ok'=>false,'detail'=>$e->getMessage());$ok=false;}
+    try{$activity_view=bratonien_tools_nc_connector_view_name($config['activity_view']);bratonien_tools_nc_connector_psql($config,$credentials['db_password'],'SELECT 1 FROM '.$activity_view.' LIMIT 1');$checks[]=array('name'=>'Activity-View','ok'=>true,'detail'=>'View lesbar');}catch(Throwable $e){$checks[]=array('name'=>'Activity-View','ok'=>false,'detail'=>$e->getMessage());$ok=false;}
+  }
+  $storages=isset($config['storages'])&&is_array($config['storages'])?$config['storages']:array();$mount_points=bratonien_tools_nc_connector_mount_points();
+  if(!$storages){$checks[]=array('name'=>'Storage-Mounts','ok'=>false,'detail'=>'Keine Storage-Zuordnung gespeichert');$ok=false;}
+  else foreach($storages as $index=>$storage){$path=rtrim((string)($storage['local_mount']??''),'/');$exists=$path!==''&&is_dir($path);$readable=$exists&&is_readable($path);$mounted=$path!==''&&isset($mount_points[$path]);$storage_ok=$exists&&$readable&&$mounted;$storage_id=(string)($storage['storage_id']??('#'.($index+1)));$detail=$storage_id.' -> '.($path!==''?$path:'(kein Pfad)');if(!$exists)$detail.=' (Pfad fehlt)';elseif(!$readable)$detail.=' (nicht lesbar)';elseif(!$mounted)$detail.=' (kein aktiver Mount)';else$detail.=' (bereit)';$checks[]=array('name'=>'Storage '.($index+1),'ok'=>$storage_ok,'detail'=>$detail);if(!$storage_ok)$ok=false;}
+  $config['verification']=array('checked_at'=>date('Y-m-d H:i:s'),'ok'=>$ok,'source_count'=>$source_count,'checks'=>$checks);$table=bratonien_tools_nc_connector_table();$config_json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);if(!is_string($config_json))throw new RuntimeException('Verifikationsergebnis konnte nicht gespeichert werden.');$state=$ok?'verified':((string)$connection['takeover_state']==='disabled'?'disabled':'imported');$now=date('Y-m-d H:i:s');pwg_query("UPDATE `$table` SET takeover_state='".pwg_db_real_escape_string($state)."', enabled=0, config_json='".pwg_db_real_escape_string($config_json)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id);
+  if(!$ok)throw new RuntimeException('Connector-Verifikation ist fehlgeschlagen. Die Verbindung bleibt deaktiviert; Details stehen im NC Connector.');return array('message'=>'Connector-Verbindung wurde erfolgreich verifiziert. PostgreSQL, Views und Storage-Mounts sind erreichbar.');
+}
+
+function bratonien_tools_nc_connector_remove_tree($path)
+{
+  $path=rtrim((string)$path,'/');if($path===''||$path==='/'||!file_exists($path))return true;
+  if(is_link($path)||is_file($path))return @unlink($path);
+  $items=@scandir($path);if(!is_array($items))return false;
+  foreach($items as $item){if($item==='.'||$item==='..')continue;if(!bratonien_tools_nc_connector_remove_tree($path.'/'.$item))return false;}
+  return @rmdir($path);
+}
+
+function bratonien_tools_nc_connector_delete()
+{
+  $id=(int)($_POST['connection_id']??0);$connection=bratonien_tools_nc_connector_connection($id,false);if(!$connection)throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');if(!empty($connection['enabled'])||(string)$connection['takeover_state']==='active')throw new RuntimeException('Eine aktive Verbindung kann nicht geloescht werden. Sie muss zuerst deaktiviert werden.');
+  $config=is_array($connection['config'])?$connection['config']:array();
+  $public_status=rtrim(PHPWG_ROOT_PATH,'/').'/_data/bratonien-tools/nc-connector-status/connection-'.$id.'.json';if(is_file($public_status))@unlink($public_status);
+  $state_dir=rtrim((string)($config['state_dir']??''),'/');
+  if($state_dir!==''&&strpos($state_dir,'/var/lib/bratonien-tools/nc-connector/connection-'.$id)===0&&file_exists($state_dir))
+  {
+    bratonien_tools_nc_connector_remove_tree($state_dir);
+  }
+  $table=bratonien_tools_nc_connector_table();pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
+  return array('message'=>'Connector-Verbindung und erreichbare Connector-eigene Statusdaten wurden geloescht. Nextcloud- und Piwigo-Bilder blieben unverändert.');
+}

include/nc_connector_piwigo_api.inc.php

@@ -7,7 +7,10 @@ if (!defined('PHPWG_ROOT_PATH'))
 function bratonien_tools_nc_connector_xml_value(SimpleXMLElement $node)
 {
   $children = $node->children();
-  if (count($children) === 0) return (string)$node;
+  if (count($children) === 0)
+  {
+    return (string)$node;
+  }
 
   $result = array();
   foreach ($children as $name => $child)
@@ -15,10 +18,16 @@ function bratonien_tools_nc_connector_xml_value(SimpleXMLElement $node)
     $value = bratonien_tools_nc_connector_xml_value($child);
     if (array_key_exists($name, $result))
     {
-      if (!is_array($result[$name]) || !array_is_list($result[$name])) $result[$name] = array($result[$name]);
+      if (!is_array($result[$name]) || !array_is_list($result[$name]))
+      {
+        $result[$name] = array($result[$name]);
+      }
       $result[$name][] = $value;
     }
-    else $result[$name] = $value;
+    else
+    {
+      $result[$name] = $value;
+    }
   }
   return $result;
 }
@@ -26,9 +35,15 @@ function bratonien_tools_nc_connector_xml_value(SimpleXMLElement $node)
 function bratonien_tools_nc_connector_decode_api_response($body, $content_type = '')
 {
   $decoded = json_decode((string)$body, true);
-  if (is_array($decoded)) return $decoded;
+  if (is_array($decoded))
+  {
+    return $decoded;
+  }
 
-  if (!function_exists('simplexml_load_string')) throw new RuntimeException('Piwigo-API lieferte XML, aber SimpleXML ist in PHP nicht verfügbar.');
+  if (!function_exists('simplexml_load_string'))
+  {
+    throw new RuntimeException('Piwigo-API lieferte XML, aber SimpleXML ist in PHP nicht verfuegbar.');
+  }
 
   $previous = libxml_use_internal_errors(true);
   $xml = simplexml_load_string((string)$body);
@@ -37,7 +52,7 @@ function bratonien_tools_nc_connector_decode_api_response($body, $content_type =
   if ($xml === false || $xml->getName() !== 'rsp')
   {
     $detail = $content_type !== '' ? ' Antworttyp: '.$content_type.'.' : '';
-    throw new RuntimeException('Piwigo-API lieferte weder gültiges JSON noch eine gültige XML-Webservice-Antwort.'.$detail);
+    throw new RuntimeException('Piwigo-API lieferte weder gueltiges JSON noch eine gueltige XML-Webservice-Antwort.'.$detail);
   }
 
   $response = array('stat'=>(string)$xml['stat']);
@@ -46,17 +61,27 @@ function bratonien_tools_nc_connector_decode_api_response($body, $content_type =
     $value = bratonien_tools_nc_connector_xml_value($child);
     if (array_key_exists($name, $response))
     {
-      if (!is_array($response[$name]) || !array_is_list($response[$name])) $response[$name] = array($response[$name]);
+      if (!is_array($response[$name]) || !array_is_list($response[$name]))
+      {
+        $response[$name] = array($response[$name]);
+      }
       $response[$name][] = $value;
     }
-    else $response[$name] = $value;
+    else
+    {
+      $response[$name] = $value;
+    }
   }
   return $response;
 }
 
 function bratonien_tools_nc_connector_api_payload(array $decoded)
 {
-  if (array_key_exists('result', $decoded)) return $decoded['result'];
+  if (array_key_exists('result', $decoded))
+  {
+    return $decoded['result'];
+  }
+
   unset($decoded['stat']);
   return $decoded;
 }
@@ -66,42 +91,66 @@ function bratonien_tools_nc_connector_collect_method_names($value, array &$metho
   if (is_string($value))
   {
     $value = trim($value);
-    if ($value !== '' && preg_match('/^[A-Za-z0-9_]+(?:\.[A-Za-z0-9_]+)+$/', $value)) $methods[$value] = true;
+    if ($value !== '' && preg_match('/^[A-Za-z0-9_]+(?:\.[A-Za-z0-9_]+)+$/', $value))
+    {
+      $methods[$value] = true;
+    }
+    return;
+  }
+
+  if (!is_array($value))
+  {
     return;
   }
-  if (!is_array($value)) return;
 
   if (isset($value['name']) && is_string($value['name']))
   {
     $name = trim($value['name']);
-    if ($name !== '') $methods[$name] = true;
+    if ($name !== '')
+    {
+      $methods[$name] = true;
+    }
+  }
+
+  foreach ($value as $entry)
+  {
+    bratonien_tools_nc_connector_collect_method_names($entry, $methods);
   }
-  foreach ($value as $entry) bratonien_tools_nc_connector_collect_method_names($entry, $methods);
 }
 
 function bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, $method)
 {
-  if (!function_exists('curl_init')) throw new RuntimeException('cURL ist in PHP nicht verfügbar. Der API-Key-Test kann nicht ausgeführt werden.');
+  if (!function_exists('curl_init'))
+  {
+    throw new RuntimeException('cURL ist in PHP nicht verfuegbar. Der API-Key-Test kann nicht ausgefuehrt werden.');
+  }
 
   $api_key_id = trim((string)$api_key_id);
   $api_key_secret = trim((string)$api_key_secret);
-  if ($api_key_id === '' || $api_key_secret === '') throw new RuntimeException('API-Schlüssel-ID und Geheimnis müssen angegeben werden.');
+  if ($api_key_id === '' || $api_key_secret === '')
+  {
+    throw new RuntimeException('API-Schluessel-ID und Geheimnis muessen angegeben werden.');
+  }
 
+  $api_key = $api_key_id.':'.$api_key_secret;
   $url = rtrim(get_absolute_root_url(true), '/').'/ws.php';
   $ch = curl_init($url);
   curl_setopt_array($ch, array(
-    CURLOPT_RETURNTRANSFER=>true,
-    CURLOPT_POST=>true,
-    CURLOPT_POSTFIELDS=>http_build_query(array('method'=>(string)$method,'format'=>'json')),
-    CURLOPT_HTTPHEADER=>array(
-      'X-PIWIGO-API: '.$api_key_id.':'.$api_key_secret,
+    CURLOPT_RETURNTRANSFER => true,
+    CURLOPT_POST => true,
+    CURLOPT_POSTFIELDS => http_build_query(array(
+      'method' => (string)$method,
+      'format' => 'json',
+    )),
+    CURLOPT_HTTPHEADER => array(
+      'X-PIWIGO-API: '.$api_key,
       'Accept: application/json, text/xml;q=0.9',
       'Content-Type: application/x-www-form-urlencoded',
     ),
-    CURLOPT_CONNECTTIMEOUT=>10,
-    CURLOPT_TIMEOUT=>20,
-    CURLOPT_FOLLOWLOCATION=>false,
-    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-WebDAV/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+    CURLOPT_CONNECTTIMEOUT => 10,
+    CURLOPT_TIMEOUT => 20,
+    CURLOPT_FOLLOWLOCATION => false,
+    CURLOPT_USERAGENT => 'Bratonien-Tools-NC-Connector/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
   ));
 
   $body = curl_exec($ch);
@@ -111,8 +160,14 @@ function bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_s
   $content_type = (string)curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
   curl_close($ch);
 
-  if ($body === false || $errno !== 0) throw new RuntimeException('Piwigo-API konnte nicht erreicht werden: '.$error);
-  if ($http_code < 200 || $http_code >= 300) throw new RuntimeException('Piwigo-API antwortete mit HTTP '.$http_code.'.');
+  if ($body === false || $errno !== 0)
+  {
+    throw new RuntimeException('Piwigo-API konnte nicht erreicht werden: '.$error);
+  }
+  if ($http_code < 200 || $http_code >= 300)
+  {
+    throw new RuntimeException('Piwigo-API antwortete mit HTTP '.$http_code.'.');
+  }
 
   $decoded = bratonien_tools_nc_connector_decode_api_response((string)$body, $content_type);
   if (($decoded['stat'] ?? '') !== 'ok')
@@ -120,19 +175,29 @@ function bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_s
     $message = (string)($decoded['message'] ?? $decoded['err'] ?? 'API-Aufruf wurde abgelehnt.');
     throw new RuntimeException($message);
   }
+
   return bratonien_tools_nc_connector_api_payload($decoded);
 }
 
 function bratonien_tools_nc_connector_validate_fallback_credentials($username, $password)
 {
-  if (!function_exists('curl_init')) throw new RuntimeException('cURL ist in PHP nicht verfügbar. Der Piwigo-Fallback kann nicht geprüft werden.');
+  if (!function_exists('curl_init'))
+  {
+    throw new RuntimeException('cURL ist in PHP nicht verfuegbar. Der Piwigo-Fallback kann nicht geprueft werden.');
+  }
 
   $username = trim((string)$username);
   $password = (string)$password;
-  if ($username === '' || $password === '') throw new RuntimeException('Piwigo-Benutzername und Passwort müssen angegeben werden.');
+  if ($username === '' || $password === '')
+  {
+    throw new RuntimeException('Piwigo-Benutzername und Passwort muessen angegeben werden.');
+  }
 
   $cookie_file = tempnam(sys_get_temp_dir(), 'br-pwg-auth-');
-  if ($cookie_file === false) throw new RuntimeException('Temporäre Piwigo-Sitzung konnte nicht angelegt werden.');
+  if ($cookie_file === false)
+  {
+    throw new RuntimeException('Temporare Piwigo-Sitzung konnte nicht angelegt werden.');
+  }
 
   try
   {
@@ -149,7 +214,7 @@ function bratonien_tools_nc_connector_validate_fallback_credentials($username, $
         CURLOPT_CONNECTTIMEOUT=>10,
         CURLOPT_TIMEOUT=>20,
         CURLOPT_FOLLOWLOCATION=>false,
-        CURLOPT_USERAGENT=>'Bratonien-Tools-NC-WebDAV/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+        CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Connector/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
       ));
       $body = curl_exec($ch);
       $errno = curl_errno($ch);
@@ -157,8 +222,8 @@ function bratonien_tools_nc_connector_validate_fallback_credentials($username, $
       $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
       $type = (string)curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
       curl_close($ch);
-      if ($body === false || $errno !== 0) throw new RuntimeException('Piwigo-Fallback konnte nicht geprüft werden: '.$error);
-      if ($http < 200 || $http >= 300) throw new RuntimeException('Piwigo-Fallback-Prüfung antwortete mit HTTP '.$http.'.');
+      if ($body === false || $errno !== 0) throw new RuntimeException('Piwigo-Fallback konnte nicht geprueft werden: '.$error);
+      if ($http < 200 || $http >= 300) throw new RuntimeException('Piwigo-Fallback-Pruefung antwortete mit HTTP '.$http.'.');
       $decoded = bratonien_tools_nc_connector_decode_api_response((string)$body, $type);
       if (($decoded['stat'] ?? '') !== 'ok')
       {
@@ -168,15 +233,83 @@ function bratonien_tools_nc_connector_validate_fallback_credentials($username, $
       return bratonien_tools_nc_connector_api_payload($decoded);
     };
 
-    $request(array('method'=>'pwg.session.login','username'=>$username,'password'=>$password));
+    $request(array('method'=>'pwg.session.login', 'username'=>$username, 'password'=>$password));
     $status = $request(array('method'=>'pwg.session.getStatus'));
     if (!is_array($status)) throw new RuntimeException('Piwigo hat keinen auswertbaren Benutzerstatus geliefert.');
     $role = strtolower(trim((string)($status['status'] ?? '')));
-    if (!in_array($role, array('admin','webmaster'), true)) throw new RuntimeException('Der Piwigo-Fallback funktioniert, gehört aber keinem Administrator/Webmaster.');
-    return array('username'=>(string)($status['username'] ?? $username),'status'=>$role);
+    if (!in_array($role, array('admin','webmaster'), true))
+    {
+      throw new RuntimeException('Der Piwigo-Fallback funktioniert, gehoert aber keinem Administrator/Webmaster.');
+    }
+    return array('username'=>(string)($status['username'] ?? $username), 'status'=>$role);
   }
   finally
   {
     @unlink($cookie_file);
   }
 }
+
+function bratonien_tools_nc_connector_piwigo_api_test()
+{
+  $api_key_id = trim((string)($_POST['nc_piwigo_api_key_id'] ?? ''));
+  $api_key_secret = trim((string)($_POST['nc_piwigo_api_key_secret'] ?? ''));
+  if ($api_key_id === '')
+  {
+    throw new RuntimeException('Piwigo-API-Schluessel-ID fehlt.');
+  }
+  if ($api_key_secret === '')
+  {
+    throw new RuntimeException('Piwigo-API-Geheimnis fehlt.');
+  }
+
+  $status = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'pwg.session.getStatus');
+  if (!is_array($status))
+  {
+    throw new RuntimeException('Piwigo hat keinen auswertbaren Benutzerstatus geliefert.');
+  }
+
+  $username = (string)($status['username'] ?? $status['user'] ?? '');
+  $user_status = strtolower((string)($status['status'] ?? ''));
+  $is_admin = in_array($user_status, array('admin', 'webmaster'), true);
+  if (!$is_admin)
+  {
+    throw new RuntimeException('Der API-Key funktioniert, gehoert aber keinem Piwigo-Administrator/Webmaster. Er wurde nicht gespeichert.');
+  }
+
+  $method_result = bratonien_tools_nc_connector_piwigo_api_request($api_key_id, $api_key_secret, 'reflection.getMethodList');
+  $method_map = array();
+  bratonien_tools_nc_connector_collect_method_names($method_result, $method_map);
+  $methods = array_keys($method_map);
+  sort($methods, SORT_STRING);
+
+  $required_methods = array('bratonien.nc.syncProductive', 'bratonien.nc.syncOrphans');
+  $missing = array_values(array_diff($required_methods, $methods));
+  if ($missing)
+  {
+    throw new RuntimeException('Der API-Key ist gueltig, aber die benoetigten Bratonien-Sync-Methoden fehlen: '.implode(', ', $missing).'.');
+  }
+
+  bratonien_tools_nc_api_credentials_store($api_key_id, $api_key_secret);
+
+  $sync_candidates = array_values(array_filter($methods, function($method)
+  {
+    return preg_match('/sync|synchron|site/i', (string)$method) === 1;
+  }));
+
+  $result = array(
+    'ok' => true,
+    'username' => $username !== '' ? $username : 'nicht gemeldet',
+    'status' => $user_status !== '' ? $user_status : 'nicht gemeldet',
+    'admin' => true,
+    'method_count' => count($methods),
+    'sync_candidates' => $sync_candidates,
+    'sync_api_detected' => true,
+    'stored' => true,
+    'conclusion' => 'Der API-Key ist als bevorzugter Connector-Zugang gespeichert. Produktive API-Synchronisierung bleibt auf die im Plugin freigegebene Piwigo-Version begrenzt; bei einer nicht freigegebenen Version greift nur der konfigurierte Benutzername/Passwort-Fallback.',
+  );
+
+  return array(
+    'message' => 'Piwigo-API-Key wurde geprueft und verschluesselt als bevorzugter Connector-Zugang gespeichert.',
+    'nc_piwigo_api_test' => $result,
+  );
+}

include/nc_connector_system.inc.php

@@ -6,17 +6,23 @@ if (!defined('PHPWG_ROOT_PATH'))
 
 function bratonien_tools_nc_connector_systemctl_value(array $args)
 {
-  if (!function_exists('proc_open')) return '';
+  if (!function_exists('proc_open'))
+  {
+    return '';
+  }
 
   $command = array_merge(array('/usr/bin/systemctl'), $args);
   $spec = array(
-    0=>array('file','/dev/null','r'),
-    1=>array('pipe','w'),
-    2=>array('pipe','w'),
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
   );
-  $environment = array_merge($_ENV, array('LC_ALL'=>'C','LANG'=>'C'));
+  $environment = array_merge($_ENV, array('LC_ALL'=>'C', 'LANG'=>'C'));
   $process = @proc_open($command, $spec, $pipes, null, $environment);
-  if (!is_resource($process)) return '';
+  if (!is_resource($process))
+  {
+    return '';
+  }
   $stdout = stream_get_contents($pipes[1]);
   stream_get_contents($pipes[2]);
   fclose($pipes[1]);
@@ -28,7 +34,10 @@ function bratonien_tools_nc_connector_systemctl_value(array $args)
 function bratonien_tools_nc_connector_parse_systemd_time($value)
 {
   $value = trim((string)$value);
-  if ($value === '' || strtolower($value) === 'n/a') return 0;
+  if ($value === '' || strtolower($value) === 'n/a')
+  {
+    return 0;
+  }
   $parsed = strtotime($value);
   return $parsed === false ? 0 : (int)$parsed;
 }
@@ -36,52 +45,106 @@ function bratonien_tools_nc_connector_parse_systemd_time($value)
 function bratonien_tools_nc_connector_monotonic_to_timestamp($value)
 {
   $value = trim((string)$value);
-  if ($value === '' || $value === '0' || strtolower($value) === 'n/a') return 0;
-  if (!preg_match('/^([0-9]+)(?:us)?$/', $value, $matches)) return 0;
+  if ($value === '' || $value === '0' || strtolower($value) === 'n/a')
+  {
+    return 0;
+  }
+
+  if (preg_match('/^([0-9]+)(?:us)?$/', $value, $matches))
+  {
+    $next_boot_seconds = ((float)$matches[1]) / 1000000;
+  }
+  else
+  {
+    return 0;
+  }
 
-  $next_boot_seconds = ((float)$matches[1]) / 1000000;
   $uptime_raw = @file_get_contents('/proc/uptime');
-  if (!is_string($uptime_raw) || !preg_match('/^([0-9]+(?:\.[0-9]+)?)/', trim($uptime_raw), $uptime_match)) return 0;
+  if (!is_string($uptime_raw) || !preg_match('/^([0-9]+(?:\.[0-9]+)?)/', trim($uptime_raw), $uptime_match))
+  {
+    return 0;
+  }
 
   $remaining = $next_boot_seconds - (float)$uptime_match[1];
-  if ($remaining < -1) return 0;
+  if ($remaining < -1)
+  {
+    return 0;
+  }
+
   return (int)round(time() + max(0, $remaining));
 }
 
 function bratonien_tools_nc_connector_next_from_timer_list($timer)
 {
-  $line = bratonien_tools_nc_connector_systemctl_value(array('list-timers','--all','--no-pager','--no-legend',$timer));
-  if ($line === '') return 0;
+  $line = bratonien_tools_nc_connector_systemctl_value(array(
+    'list-timers', '--all', '--no-pager', '--no-legend', $timer,
+  ));
+  if ($line === '')
+  {
+    return 0;
+  }
+
   $first_line = trim((string)strtok($line, "\n"));
-  if (!preg_match('/^(\S+\s+\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\s+\S+)/', $first_line, $matches)) return 0;
-  $parsed = strtotime($matches[1]);
-  return $parsed === false ? 0 : (int)$parsed;
+  if (preg_match('/^(\S+\s+\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\s+\S+)/', $first_line, $matches))
+  {
+    $parsed = strtotime($matches[1]);
+    return $parsed === false ? 0 : (int)$parsed;
+  }
+
+  return 0;
 }
 
 function bratonien_tools_nc_connector_connection_last_status(array $connection)
 {
   $empty = array(
-    'timestamp'=>0,'label'=>'Nicht verfügbar','state'=>'','message'=>'','auth_mode'=>'',
-    'api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'',
+    'timestamp'=>0,
+    'label'=>'Nicht verfügbar',
+    'state'=>'',
+    'message'=>'',
+    'auth_mode'=>'',
+    'api_state'=>'',
+    'api_message'=>'',
+    'fallback_state'=>'',
+    'fallback_message'=>'',
+    'error_detail'=>'',
   );
 
   $connection_id = (int)($connection['id'] ?? 0);
   $candidates = array();
-  if ($connection_id > 0) $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status/connection-'.$connection_id.'.json';
+  if ($connection_id > 0)
+  {
+    $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status/connection-'.$connection_id.'.json';
+  }
 
   $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
   $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
-  if ($state_dir === '' && $connection_id > 0) $state_dir = '/var/lib/bratonien-tools/nc-connector/connection-'.$connection_id;
-  if ($state_dir !== '') $candidates[] = $state_dir.'/connector-status.json';
+  if ($state_dir === '' && $connection_id > 0)
+  {
+    $state_dir = '/var/lib/bratonien-tools/nc-connector/connection-'.$connection_id;
+  }
+  if ($state_dir !== '')
+  {
+    $candidates[] = $state_dir.'/connector-status.json';
+  }
 
   $decoded = null;
   foreach ($candidates as $candidate)
   {
-    if (!is_readable($candidate)) continue;
+    if (!is_readable($candidate))
+    {
+      continue;
+    }
     $value = json_decode((string)@file_get_contents($candidate), true);
-    if (is_array($value)) { $decoded = $value; break; }
+    if (is_array($value))
+    {
+      $decoded = $value;
+      break;
+    }
+  }
+  if (!is_array($decoded))
+  {
+    return $empty;
   }
-  if (!is_array($decoded)) return $empty;
 
   $timestamp = (int)($decoded['timestamp'] ?? 0);
   $api = isset($decoded['api']) && is_array($decoded['api']) ? $decoded['api'] : array();
@@ -103,12 +166,22 @@ function bratonien_tools_nc_connector_connection_last_status(array $connection)
 
 function bratonien_tools_nc_connector_last_status(array $connections)
 {
-  $latest = array('timestamp'=>0,'state'=>'','message'=>'','auth_mode'=>'','api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'');
+  $latest = array('timestamp'=>0, 'state'=>'', 'message'=>'', 'auth_mode'=>'', 'api_state'=>'', 'api_message'=>'', 'fallback_state'=>'', 'fallback_message'=>'', 'error_detail'=>'');
+
   foreach ($connections as $connection)
   {
+    if (empty($connection['enabled']) || (string)($connection['takeover_state'] ?? '') !== 'active')
+    {
+      continue;
+    }
+
     $status = bratonien_tools_nc_connector_connection_last_status($connection);
-    if ((int)$status['timestamp'] >= (int)$latest['timestamp']) $latest = $status;
+    if ((int)$status['timestamp'] >= (int)$latest['timestamp'])
+    {
+      $latest = $status;
+    }
   }
+
   return $latest;
 }
 
@@ -117,40 +190,49 @@ function bratonien_tools_nc_connector_system_status(array $connections = array()
   $timer = 'bratonien-nc-connector.timer';
   $service = 'bratonien-nc-connector.service';
 
-  $next_realtime_raw = bratonien_tools_nc_connector_systemctl_value(array('show',$timer,'--property=NextElapseUSecRealtime','--value'));
+  $next_realtime_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecRealtime', '--value'));
   $next_timestamp = bratonien_tools_nc_connector_parse_systemd_time($next_realtime_raw);
+
   if ($next_timestamp <= 0)
   {
-    $next_monotonic_raw = bratonien_tools_nc_connector_systemctl_value(array('show',$timer,'--property=NextElapseUSecMonotonic','--value'));
+    $next_monotonic_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecMonotonic', '--value'));
     $next_timestamp = bratonien_tools_nc_connector_monotonic_to_timestamp($next_monotonic_raw);
   }
-  if ($next_timestamp <= 0) $next_timestamp = bratonien_tools_nc_connector_next_from_timer_list($timer);
 
-  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active',$timer));
-  $enabled = bratonien_tools_nc_connector_systemctl_value(array('is-enabled',$timer));
+  if ($next_timestamp <= 0)
+  {
+    $next_timestamp = bratonien_tools_nc_connector_next_from_timer_list($timer);
+  }
+
+  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active', $timer));
+  $enabled = bratonien_tools_nc_connector_systemctl_value(array('is-enabled', $timer));
 
   $last = bratonien_tools_nc_connector_last_status($connections);
   if ($last['timestamp'] <= 0)
   {
-    $last_raw = bratonien_tools_nc_connector_systemctl_value(array('show',$service,'--property=ExecMainExitTimestamp','--value'));
+    $last_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $service, '--property=ExecMainExitTimestamp', '--value'));
     $last['timestamp'] = bratonien_tools_nc_connector_parse_systemd_time($last_raw);
   }
 
   return array(
-    'timer_name'=>$timer,
-    'timer_active'=>$active === 'active',
-    'timer_enabled'=>$enabled === 'enabled',
-    'last_run_timestamp'=>(int)$last['timestamp'],
-    'last_run_label'=>$last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
-    'last_run_state'=>(string)$last['state'],
-    'last_run_message'=>(string)$last['message'],
-    'last_run_auth_mode'=>(string)$last['auth_mode'],
-    'last_run_api_state'=>(string)$last['api_state'],
-    'last_run_api_message'=>(string)$last['api_message'],
-    'last_run_fallback_state'=>(string)$last['fallback_state'],
-    'last_run_fallback_message'=>(string)$last['fallback_message'],
-    'last_run_error_detail'=>(string)$last['error_detail'],
-    'next_run_timestamp'=>$next_timestamp,
-    'next_run_label'=>$next_timestamp > 0 ? date('d.m.Y H:i:s', $next_timestamp) : 'Nicht verfügbar',
+    'timer_name' => $timer,
+    'timer_active' => $active === 'active',
+    'timer_enabled' => $enabled === 'enabled',
+    'last_run_timestamp' => (int)$last['timestamp'],
+    'last_run_label' => $last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
+    'last_run_state' => (string)$last['state'],
+    'last_run_message' => (string)$last['message'],
+    'last_run_auth_mode' => (string)$last['auth_mode'],
+    'last_run_api_state' => (string)$last['api_state'],
+    'last_run_api_message' => (string)$last['api_message'],
+    'last_run_fallback_state' => (string)$last['fallback_state'],
+    'last_run_fallback_message' => (string)$last['fallback_message'],
+    'last_run_error_detail' => (string)$last['error_detail'],
+    'next_run_timestamp' => $next_timestamp,
+    'next_run_label' => $next_timestamp > 0 ? date('d.m.Y H:i:s', $next_timestamp) : 'Nicht verfügbar',
+    'legacy_runtime_exists' => is_dir('/opt/piwigo-sync'),
+    'legacy_config_exists' => is_dir('/etc/piwigo-sync'),
+    'legacy_service_exists' => is_file('/etc/systemd/system/piwigo-sync.service'),
+    'legacy_timer_exists' => is_file('/etc/systemd/system/piwigo-sync.timer'),
   );
 }

include/nc_connector_takeover.inc.php

@@ -0,0 +1,135 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+/**
+ * Controlled handover preparation for verified NC Connector connections.
+ *
+ * This phase intentionally does not stop, disable or modify the legacy
+ * piwigo-sync service. It only marks a verified Connector connection as ready
+ * for a later controlled takeover. The marker can be rolled back at any time.
+ */
+
+function bratonien_tools_nc_connector_ensure_takeover_state()
+{
+  bratonien_tools_nc_connector_ensure_table();
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("ALTER TABLE `$table` MODIFY takeover_state enum('imported','verified','ready','active','disabled') NOT NULL DEFAULT 'imported'");
+}
+
+function bratonien_tools_nc_connector_prepare_takeover()
+{
+  $id = isset($_POST['connection_id']) ? (int)$_POST['connection_id'] : 0;
+  $connection = bratonien_tools_nc_connector_connection($id, false);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+  if ($connection['takeover_state'] !== 'verified')
+  {
+    throw new RuntimeException('Nur eine erfolgreich verifizierte Verbindung kann fuer die Uebergabe vorbereitet werden.');
+  }
+
+  $config = $connection['config'];
+  $verification = isset($config['verification']) && is_array($config['verification'])
+    ? $config['verification']
+    : array();
+  if (empty($verification['ok']))
+  {
+    throw new RuntimeException('Die gespeicherte Verifikation ist nicht erfolgreich. Bitte die Verbindung erneut pruefen.');
+  }
+
+  $config['takeover'] = array(
+    'prepared_at' => date('Y-m-d H:i:s'),
+    'legacy_sync_untouched' => true,
+    'connector_enabled' => false,
+    'first_run' => array(
+      'status' => 'pending',
+      'finished_at' => null,
+      'detail' => '',
+    ),
+  );
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json))
+  {
+    throw new RuntimeException('Uebergabestatus konnte nicht gespeichert werden.');
+  }
+
+  bratonien_tools_nc_connector_ensure_takeover_state();
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET
+    takeover_state = 'ready',
+    enabled = 0,
+    config_json = '".pwg_db_real_escape_string($config_json)."',
+    updated = '".pwg_db_real_escape_string($now)."'
+    WHERE id = ".(int)$connection['id']);
+
+  return array(
+    'message' => 'Die verifizierte Nextcloud-Verbindung ist jetzt fuer die kontrollierte Uebergabe vorbereitet. Der Connector wurde noch nicht aktiviert und der Legacy-Sync bleibt unveraendert Produktionsverbindung.',
+  );
+}
+
+function bratonien_tools_nc_connector_cancel_takeover()
+{
+  $id = isset($_POST['connection_id']) ? (int)$_POST['connection_id'] : 0;
+  $connection = bratonien_tools_nc_connector_connection($id, false);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+  if ($connection['takeover_state'] !== 'ready')
+  {
+    throw new RuntimeException('Diese Verbindung befindet sich nicht in der Uebergabevorbereitung.');
+  }
+
+  $config = $connection['config'];
+  if (isset($config['takeover']))
+  {
+    unset($config['takeover']);
+  }
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json))
+  {
+    throw new RuntimeException('Uebergabestatus konnte nicht zurueckgesetzt werden.');
+  }
+
+  bratonien_tools_nc_connector_ensure_takeover_state();
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET
+    takeover_state = 'verified',
+    enabled = 0,
+    config_json = '".pwg_db_real_escape_string($config_json)."',
+    updated = '".pwg_db_real_escape_string($now)."'
+    WHERE id = ".(int)$connection['id']);
+
+  return array(
+    'message' => 'Die Uebergabevorbereitung wurde zurueckgenommen. Die Verbindung bleibt verifiziert und deaktiviert; der Legacy-Sync bleibt unveraendert aktiv.',
+  );
+}
+
+/**
+ * Normalize the outcome of a Connector sync run during takeover.
+ *
+ * Both "changed" and "no_changes" are successful results. Only "error"
+ * represents a failed run and may trigger rollback of a controlled handover.
+ */
+function bratonien_tools_nc_connector_takeover_result($status, $detail = '')
+{
+  $status = trim((string)$status);
+  if (!in_array($status, array('changed', 'no_changes', 'error'), true))
+  {
+    throw new RuntimeException('Unbekannter Connector-Laufstatus: '.$status);
+  }
+
+  return array(
+    'status' => $status,
+    'success' => $status !== 'error',
+    'changed' => $status === 'changed',
+    'finished_at' => date('Y-m-d H:i:s'),
+    'detail' => (string)$detail,
+  );
+}

include/nc_connector_webdav.inc.php

@@ -4,6 +4,83 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
+/**
+ * Return the only existing local connector as migration fallback.
+ */
+function bratonien_tools_nc_connector_single_local_fallback()
+{
+  bratonien_tools_nc_connector_ensure_table();
+  $table = bratonien_tools_nc_connector_table();
+  $result = pwg_query("SELECT id, enabled, takeover_state, config_json FROM `$table` WHERE adapter='local' ORDER BY id");
+  $rows = array();
+
+  while ($row = pwg_db_fetch_assoc($result))
+  {
+    $rows[] = $row;
+    if (count($rows) > 1) return null;
+  }
+
+  if (count($rows) !== 1) return null;
+
+  $row = $rows[0];
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config)) $config = array();
+
+  return array(
+    'id'=>(int)$row['id'],
+    'enabled'=>(bool)$row['enabled'],
+    'takeover_state'=>(string)$row['takeover_state'],
+    'config'=>$config,
+  );
+}
+
+/**
+ * Link a WebDAV connection with the single existing local fallback.
+ */
+function bratonien_tools_nc_connector_pair_migration_fallback($webdav_id, array &$webdav_config, $now)
+{
+  $legacy = bratonien_tools_nc_connector_single_local_fallback();
+  if (!$legacy) return null;
+
+  $legacy_id = (int)$legacy['id'];
+  if ($legacy_id < 1 || $legacy_id === (int)$webdav_id) return null;
+
+  $webdav_config['migration'] = array(
+    'role'=>'webdav-primary-candidate',
+    'legacy_fallback_connection_id'=>$legacy_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+
+  $legacy_config = $legacy['config'];
+  $legacy_config['migration'] = array(
+    'role'=>'legacy-fallback',
+    'webdav_successor_connection_id'=>(int)$webdav_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+
+  $legacy_json = json_encode($legacy_config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($legacy_json))
+  {
+    throw new RuntimeException('Die bestehende Verbindung konnte nicht als Migrations-Fallback markiert werden.');
+  }
+
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($legacy_json)."', updated='".pwg_db_real_escape_string((string)$now)."' WHERE id=".$legacy_id." LIMIT 1");
+
+  return $legacy_id;
+}
+
+/**
+ * Create or update a WebDAV-backed connector from the user-facing wizard.
+ *
+ * Remote connections are updated in place. When the editor was opened for a
+ * legacy connection, a WebDAV successor is created and the legacy connection
+ * stays available as fallback.
+ */
 function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
 {
   $state = bratonien_tools_nc_wizard_state();
@@ -18,7 +95,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $password = (string)($state['_password'] ?? '');
   if ($base_url === '' || $username === '' || $password === '')
   {
-    throw new RuntimeException('Für die WebDAV-Verbindung fehlen Nextcloud-Adresse oder Zugangsdaten.');
+    throw new RuntimeException('Für den WebDAV-Zugang fehlen Nextcloud-Adresse oder Zugangsdaten.');
   }
 
   $selected = isset($state['directory_selected']) && is_array($state['directory_selected'])
@@ -53,7 +130,16 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $fallback_password = (string)($state['_fallback_password'] ?? '');
   $api_enabled = $api_key_id !== '' && $api_key_secret !== '';
 
+  $editing_id = (int)($state['editing_connection_id'] ?? 0);
+  $editing_mode = (string)($state['editing_mode'] ?? '');
+  $editing_connection = $editing_id > 0 ? bratonien_tools_nc_connector_connection($editing_id, false) : null;
+  $editing_remote = $editing_connection
+    && (string)$editing_connection['adapter'] === 'remote'
+    && (string)($editing_connection['config']['source_mode'] ?? '') === 'webdav-placeholder'
+    && $editing_mode === 'update';
+
   $config = array(
+    'origin'=>'native',
     'source_mode'=>'webdav-placeholder',
     'transport'=>'webdav',
     'nextcloud_url'=>$base_url,
@@ -63,10 +149,27 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
     'roots'=>$roots,
     'state_dir'=>'',
     'status_file'=>'',
+    'quiet_seconds'=>120,
+    'max_wait_seconds'=>900,
+    'full_sync_seconds'=>86400,
+    'parallel_test'=>true,
     'piwigo_auth'=>'connection-scoped',
     'api_enabled'=>$api_enabled,
   );
 
+  if ($editing_remote)
+  {
+    $old_config = is_array($editing_connection['config'] ?? null) ? $editing_connection['config'] : array();
+    foreach (array('state_dir','status_file','parallel_gallery_root','source_fingerprint','runtime','migration') as $preserve)
+    {
+      if (array_key_exists($preserve, $old_config)) $config[$preserve] = $old_config[$preserve];
+    }
+    foreach (array('quiet_seconds','max_wait_seconds','full_sync_seconds') as $preserve)
+    {
+      if (isset($old_config[$preserve])) $config[$preserve] = (int)$old_config[$preserve];
+    }
+  }
+
   foreach (array('product'=>'nextcloud_product', 'version'=>'nextcloud_version') as $state_key=>$config_key)
   {
     $value = trim((string)($state[$state_key] ?? ''));
@@ -75,6 +178,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
 
   $secret_payload = json_encode(array(
     'v'=>3,
+    'db_password'=>'',
     'piwigo_user'=>$fallback_user,
     'piwigo_password'=>$fallback_password,
     'api_key_id'=>$api_key_id,
@@ -84,18 +188,34 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
   if (!is_string($secret_payload)) throw new RuntimeException('WebDAV-Zugangsdaten konnten nicht serialisiert werden.');
 
-  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
-
   bratonien_tools_nc_connector_ensure_table();
   $table = bratonien_tools_nc_connector_table();
   $now = date('Y-m-d H:i:s');
-  $connection_key = 'webdav-'.bin2hex(random_bytes(12));
   $secret_blob = bratonien_tools_nc_connector_encrypt_secret($secret_payload);
 
-  pwg_query("INSERT INTO `$table` (connection_key,name,adapter,enabled,config_json,secret_blob,created,updated) VALUES ('"
+  if ($editing_remote)
+  {
+    $config['state_dir'] = trim((string)($config['state_dir'] ?? '')) !== '' ? $config['state_dir'] : '/var/lib/bratonien-tools/nc-connector/connection-'.$editing_id;
+    $config['status_file'] = trim((string)($config['status_file'] ?? '')) !== '' ? $config['status_file'] : $config['state_dir'].'/connector-status.json';
+    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
+
+    pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$editing_id." LIMIT 1");
+    unset($_SESSION['bratonien_nc_wizard']);
+
+    return array(
+      'connection_id'=>$editing_id,
+      'message'=>'WebDAV-Verbindung #'.$editing_id.' wurde gespeichert. Der nächste Connector-Lauf verwendet die neuen Einstellungen.',
+    );
+  }
+
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');
+
+  $connection_key = 'webdav-'.bin2hex(random_bytes(12));
+  pwg_query("INSERT INTO `$table` (connection_key,name,adapter,enabled,takeover_state,config_json,secret_blob,created,updated) VALUES ('"
     .pwg_db_real_escape_string($connection_key)."','"
-    .pwg_db_real_escape_string($name)."','remote',1,'"
+    .pwg_db_real_escape_string($name)."','remote',0,'disabled','"
     .pwg_db_real_escape_string($config_json)."','"
     .pwg_db_real_escape_string($secret_blob)."','"
     .pwg_db_real_escape_string($now)."','"
@@ -104,15 +224,35 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
   $id = (int)pwg_db_insert_id();
   if ($id < 1) throw new RuntimeException('Die WebDAV-Verbindung konnte nicht eindeutig angelegt werden.');
 
-  $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
-  $config['status_file'] = $config['state_dir'].'/connector-status.json';
-  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  if (!is_string($config_json))
+  try
+  {
+    $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
+    $config['status_file'] = $config['state_dir'].'/connector-status.json';
+    $legacy_fallback_id = bratonien_tools_nc_connector_pair_migration_fallback($id, $config, $now);
+
+    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (!is_string($config_json))
+    {
+      throw new RuntimeException('Die WebDAV-Verbindung konnte nach dem Anlegen nicht serialisiert werden.');
+    }
+    pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." LIMIT 1");
+  }
+  catch (Throwable $e)
   {
     pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
-    throw new RuntimeException('Die WebDAV-Verbindung konnte nach dem Anlegen nicht serialisiert werden.');
+    throw $e;
+  }
+
+  unset($_SESSION['bratonien_nc_wizard']);
+
+  if ($legacy_fallback_id !== null)
+  {
+    return array(
+      'connection_id'=>$id,
+      'legacy_fallback_connection_id'=>$legacy_fallback_id,
+      'message'=>'WebDAV-Nachfolger wurde angelegt. Die bestehende lokale Verbindung #'.$legacy_fallback_id.' bleibt als Fallback erhalten.',
+    );
   }
-  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." LIMIT 1");
 
   return array(
     'connection_id'=>$id,

include/nc_connector_wizard.inc.php

@@ -17,28 +17,30 @@ function bratonien_tools_nc_wizard_state()
     'display_name'=>'',
     'version'=>'',
     'product'=>'Nextcloud',
+    'users'=>array(),
+    'can_list_users'=>false,
+    'showcase_user'=>'',
     'connection_name'=>'',
     'scan_message'=>'',
-    'source_mode'=>'webdav-placeholder',
-    'transport'=>'webdav',
-    'gallery_root'=>'',
-    'roots'=>array(),
-    'technical_stage'=>'mounts',
-    'technical_source'=>'WebDAV',
+    'technical_stage'=>'auto_check',
+    'technical_source'=>'Noch nicht geprüft',
     'technical_error'=>'',
     'technical_complete'=>false,
-    'directory_selection_ready'=>false,
-    'directory_path'=>'',
-    'directory_parent'=>'',
-    'directory_children'=>array(),
-    'directory_current_fileid'=>0,
-    'directory_fileids'=>array(),
-    'directory_selected'=>array(),
-    'directory_selected_fileids'=>array(),
+    'db_host'=>'',
+    'db_port'=>'5432',
+    'db_database'=>'nextcloud',
+    'db_user'=>'',
+    'db_password_set'=>false,
+    'source_view'=>'piwigo_showcase_sources',
+    'activity_view'=>'piwigo_showcase_activity',
+    'gallery_root'=>'',
+    'storages'=>array(),
+    'storage_candidates'=>array(),
     'api_status'=>'pending',
     'api_username'=>'',
     'api_error'=>'',
     '_password'=>'',
+    '_db_password'=>'',
     '_api_key_id'=>'',
     '_api_key_secret'=>'',
     '_fallback_user'=>'',
@@ -100,7 +102,7 @@ function bratonien_tools_nc_wizard_http($url, $username = '', $password = '', ar
     CURLOPT_CONNECTTIMEOUT=>8,
     CURLOPT_TIMEOUT=>15,
     CURLOPT_HTTPHEADER=>array_merge(array('Accept: application/json'), $headers),
-    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-WebDAV/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Wizard/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
   );
 
   if ($username !== '')
@@ -139,6 +141,352 @@ function bratonien_tools_nc_wizard_ocs_data($body)
   return isset($decoded['ocs']['data']) && is_array($decoded['ocs']['data']) ? $decoded['ocs']['data'] : array();
 }
 
+function bratonien_tools_nc_wizard_fill_profile(array &$state)
+{
+  $url_host = strtolower((string)parse_url($state['base_url'], PHP_URL_HOST));
+
+  $state['db_host'] = $url_host;
+  $state['db_port'] = '5432';
+  $state['db_database'] = 'nextcloud';
+  $state['db_user'] = (string)$state['username'];
+  $state['_db_password'] = (string)$state['_password'];
+  $state['db_password_set'] = $state['_db_password'] !== '';
+  $state['source_view'] = 'piwigo_showcase_sources';
+  $state['activity_view'] = 'piwigo_showcase_activity';
+  $state['gallery_root'] = rtrim(PHPWG_ROOT_PATH, '/').'/galleries/nextcloud';
+  $state['storages'] = array();
+  $state['storage_candidates'] = array();
+  $state['technical_stage'] = 'auto_check';
+  $state['technical_source'] = 'Automatische Prüfung';
+  $state['technical_error'] = '';
+  $state['technical_complete'] = false;
+
+  foreach (bratonien_tools_nc_connector_connections() as $candidate)
+  {
+    $config = isset($candidate['config']) && is_array($candidate['config']) ? $candidate['config'] : array();
+    $candidate_url = trim((string)($config['nextcloud_url'] ?? ''));
+    $match = false;
+
+    if ($candidate_url !== '')
+    {
+      try
+      {
+        $match = bratonien_tools_nc_wizard_normalize_url($candidate_url) === $state['base_url'];
+      }
+      catch (Throwable $ignored)
+      {
+        $match = false;
+      }
+    }
+
+    if (!$match) continue;
+
+    $state['db_host'] = trim((string)($config['host'] ?? $state['db_host']));
+    $state['db_port'] = trim((string)($config['port'] ?? $state['db_port']));
+    $state['db_database'] = trim((string)($config['database'] ?? $state['db_database']));
+    $state['source_view'] = trim((string)($config['source_view'] ?? $state['source_view']));
+    $state['activity_view'] = trim((string)($config['activity_view'] ?? $state['activity_view']));
+    $state['gallery_root'] = trim((string)($config['gallery_root'] ?? $state['gallery_root']));
+    $state['storages'] = isset($config['storages']) && is_array($config['storages']) ? $config['storages'] : array();
+    $state['storage_candidates'] = $state['storages'];
+    $state['technical_source'] = 'Bekannte Verbindungswerte werden erneut geprüft';
+    break;
+  }
+}
+
+function bratonien_tools_nc_wizard_finish_data_access(array &$state)
+{
+  $config = array(
+    'host'=>$state['db_host'],
+    'port'=>$state['db_port'],
+    'database'=>$state['db_database'],
+    'user'=>$state['db_user'],
+  );
+  $password = (string)$state['_db_password'];
+
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT 1');
+
+  $source_view = bratonien_tools_nc_connector_view_name($state['source_view']);
+  $activity_view = bratonien_tools_nc_connector_view_name($state['activity_view']);
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT COUNT(*) FROM '.$source_view);
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT 1 FROM '.$activity_view.' LIMIT 1');
+
+  $rows = bratonien_tools_nc_connector_psql(
+    $config,
+    $password,
+    "SELECT DISTINCT storage_id::text || E'\\t' || COALESCE(source_path, '') FROM ".$source_view." ORDER BY 1"
+  );
+
+  $candidates = array();
+  foreach (preg_split('/\r\n|\r|\n/', trim($rows)) as $line)
+  {
+    if ($line === '') continue;
+
+    $parts = explode("\t", $line, 2);
+    if (count($parts) !== 2) continue;
+
+    $storage_id = trim($parts[0]);
+    $source_path = trim($parts[1], '/');
+    if ($storage_id === '') continue;
+
+    $prefix = $source_path;
+    if (strpos($source_path, '/') !== false) $prefix = substr($source_path, 0, strpos($source_path, '/'));
+
+    if (!isset($candidates[$storage_id]))
+    {
+      $candidates[$storage_id] = array(
+        'storage_id'=>$storage_id,
+        'source_prefix'=>$prefix,
+        'local_mount'=>'',
+      );
+    }
+  }
+
+  if (!$candidates) throw new RuntimeException('Die Verbindung zur Datenquelle funktioniert, aber es wurden noch keine freigegebenen Speicherorte gefunden.');
+
+  $known = array();
+  foreach (bratonien_tools_nc_connector_connections() as $connection)
+  {
+    foreach (($connection['config']['storages'] ?? array()) as $storage)
+    {
+      $key = (string)($storage['storage_id'] ?? '').'|'.trim((string)($storage['source_prefix'] ?? ''), '/');
+      if ($key !== '|') $known[$key] = (string)($storage['local_mount'] ?? '');
+    }
+  }
+
+  foreach ($candidates as &$candidate)
+  {
+    $key = $candidate['storage_id'].'|'.trim($candidate['source_prefix'], '/');
+    if (!empty($known[$key]) && is_dir($known[$key]) && is_readable($known[$key])) $candidate['local_mount'] = $known[$key];
+  }
+  unset($candidate);
+
+  $state['storage_candidates'] = array_values($candidates);
+  $state['storages'] = array_values(array_filter($state['storage_candidates'], function($storage) {
+    return trim((string)($storage['local_mount'] ?? '')) !== '';
+  }));
+  $state['technical_error'] = '';
+  $state['technical_source'] = 'Datenzugriff erfolgreich geprüft';
+  $state['technical_complete'] = count($state['storages']) === count($state['storage_candidates']);
+  $state['technical_stage'] = $state['technical_complete'] ? 'ready' : 'mounts';
+}
+
+function bratonien_tools_nc_wizard_scan()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $host_input = trim((string)($_POST['nc_wizard_host'] ?? $state['host_input']));
+  $username = trim((string)($_POST['nc_wizard_user'] ?? $state['username']));
+  $password = array_key_exists('nc_wizard_password', $_POST) ? (string)$_POST['nc_wizard_password'] : (string)$state['_password'];
+
+  $state['step'] = 1;
+  $state['host_input'] = $host_input;
+  $state['username'] = $username;
+  $state['_password'] = $password;
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($username === '' || $password === '') throw new RuntimeException('Nextcloud-Benutzer und Passwort werden für den Scan benötigt.');
+
+  $base_url = '';
+  $status_data = null;
+  foreach (bratonien_tools_nc_wizard_candidate_urls($host_input) as $candidate_url)
+  {
+    try
+    {
+      $response = bratonien_tools_nc_wizard_http($candidate_url.'/status.php');
+      if ($response['status'] < 200 || $response['status'] >= 300) continue;
+
+      $candidate_status = json_decode($response['body'], true);
+      if (!is_array($candidate_status) || empty($candidate_status['installed'])) continue;
+
+      $base_url = $candidate_url;
+      $status_data = $candidate_status;
+      break;
+    }
+    catch (Throwable $ignored)
+    {
+    }
+  }
+
+  if ($base_url === '' || !is_array($status_data)) throw new RuntimeException('Unter dieser Adresse konnte keine Nextcloud erreicht werden. HTTP und HTTPS wurden automatisch geprüft.');
+
+  $user_response = bratonien_tools_nc_wizard_http(
+    $base_url.'/ocs/v2.php/cloud/user?format=json',
+    $username,
+    $password,
+    array('OCS-APIRequest: true')
+  );
+
+  if ($user_response['status'] === 401 || $user_response['status'] === 403) throw new RuntimeException('Nextcloud hat Benutzername oder Passwort abgelehnt.');
+  if ($user_response['status'] < 200 || $user_response['status'] >= 300) throw new RuntimeException('Nextcloud ist erreichbar, aber die Anmeldung konnte nicht geprüft werden.');
+
+  $user_data = bratonien_tools_nc_wizard_ocs_data($user_response['body']);
+
+  $users = array();
+  $can_list_users = false;
+  try
+  {
+    $users_response = bratonien_tools_nc_wizard_http(
+      $base_url.'/ocs/v2.php/cloud/users?format=json',
+      $username,
+      $password,
+      array('OCS-APIRequest: true')
+    );
+
+    if ($users_response['status'] >= 200 && $users_response['status'] < 300)
+    {
+      $users_data = bratonien_tools_nc_wizard_ocs_data($users_response['body']);
+      if (isset($users_data['users']) && is_array($users_data['users']))
+      {
+        $users = array_values(array_filter(array_map('strval', $users_data['users'])));
+        sort($users, SORT_NATURAL | SORT_FLAG_CASE);
+        $can_list_users = true;
+      }
+    }
+  }
+  catch (Throwable $ignored)
+  {
+  }
+
+  $resolved_username = trim((string)($user_data['id'] ?? $username));
+  if ($resolved_username === '') $resolved_username = $username;
+  $url_host = (string)parse_url($base_url, PHP_URL_HOST);
+
+  $state = array_merge($state, array(
+    'step'=>2,
+    'scan_ok'=>true,
+    'base_url'=>$base_url,
+    'host_input'=>$host_input,
+    'username'=>$resolved_username,
+    'display_name'=>(string)($user_data['display-name'] ?? $user_data['displayname'] ?? ''),
+    'version'=>(string)($status_data['versionstring'] ?? $status_data['version'] ?? ''),
+    'product'=>(string)($status_data['productname'] ?? 'Nextcloud'),
+    'users'=>$users,
+    'can_list_users'=>$can_list_users,
+    'showcase_user'=>'',
+    'connection_name'=>$url_host !== '' ? $url_host : 'Nextcloud',
+    'scan_message'=>'Nextcloud wurde erkannt und der Benutzerzugriff wurde bestätigt.',
+    '_password'=>$password,
+    'api_status'=>'pending',
+    'api_username'=>'',
+    'api_error'=>'',
+  ));
+
+  bratonien_tools_nc_wizard_fill_profile($state);
+
+  try
+  {
+    bratonien_tools_nc_wizard_finish_data_access($state);
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'database_details';
+    $state['technical_error'] = $e->getMessage();
+  }
+
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($state['technical_stage'] === 'database_details')
+  {
+    return array('message'=>'Nextcloud wurde gefunden. Die Datenbank-Adresse muss noch bestätigt werden.');
+  }
+  if ($state['technical_stage'] === 'mounts')
+  {
+    return array('message'=>'Nextcloud und Datenzugriff wurden bestätigt. Ein Speicherort muss noch zugeordnet werden.');
+  }
+
+  return array('message'=>'Nextcloud und Datenzugriff wurden erfolgreich bestätigt.');
+}
+
+function bratonien_tools_nc_wizard_save_technical()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if (empty($state['scan_ok'])) throw new RuntimeException('Bitte zuerst Nextcloud erfolgreich scannen.');
+  if ((string)$state['username'] === '' || (string)$state['_password'] === '') throw new RuntimeException('Die Zugangsdaten aus dem ersten Schritt sind nicht mehr verfügbar. Bitte den Assistenten neu starten.');
+
+  $state['db_user'] = (string)$state['username'];
+  $state['_db_password'] = (string)$state['_password'];
+  $state['db_password_set'] = true;
+  $state['db_host'] = trim((string)($_POST['nc_wizard_db_host'] ?? $state['db_host']));
+  $state['db_port'] = (string)max(1, min(65535, (int)($_POST['nc_wizard_db_port'] ?? $state['db_port'])));
+  $state['db_database'] = trim((string)($_POST['nc_wizard_db_database'] ?? $state['db_database']));
+  $state['technical_stage'] = 'database_details';
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($state['db_host'] === '' || $state['db_database'] === '') throw new RuntimeException('Die Adresse der Datenbank ist noch unvollständig.');
+
+  try
+  {
+    bratonien_tools_nc_wizard_finish_data_access($state);
+    bratonien_tools_nc_wizard_store($state);
+
+    return array(
+      'message'=>$state['technical_complete']
+        ? 'Datenzugriff wurde erfolgreich geprüft.'
+        : 'Datenzugriff funktioniert. Ein Speicherort muss noch bestätigt werden.'
+    );
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_error'] = $e->getMessage();
+    $state['technical_stage'] = 'database_details';
+    bratonien_tools_nc_wizard_store($state);
+    throw $e;
+  }
+}
+
+function bratonien_tools_nc_wizard_save_mounts()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $candidates = is_array($state['storage_candidates']) ? $state['storage_candidates'] : array();
+  $mounts = isset($_POST['nc_wizard_storage_mount']) && is_array($_POST['nc_wizard_storage_mount']) ? $_POST['nc_wizard_storage_mount'] : array();
+
+  if (!$candidates) throw new RuntimeException('Es wurden noch keine Speicherorte erkannt.');
+
+  $storages = array();
+  foreach ($candidates as $index=>$candidate)
+  {
+    $mount = trim((string)($candidate['local_mount'] ?? ''));
+    if ($mount === '') $mount = trim((string)($mounts[$index] ?? ''));
+    if ($mount === '' || $mount[0] !== '/') throw new RuntimeException('Für einen Speicherort fehlt ein gültiger lokaler Pfad.');
+
+    $mount = rtrim($mount, '/');
+    if (!is_dir($mount) || !is_readable($mount)) throw new RuntimeException('Der angegebene Speicherort ist nicht vorhanden oder nicht lesbar: '.$mount);
+
+    $candidate['local_mount'] = $mount;
+    $storages[] = $candidate;
+  }
+
+  $state['storages'] = $storages;
+  $state['storage_candidates'] = $storages;
+  $state['technical_complete'] = true;
+  $state['technical_stage'] = 'ready';
+  $state['technical_error'] = '';
+  bratonien_tools_nc_wizard_store($state);
+
+  return array('message'=>'Speicherzuordnung wurde erfolgreich geprüft.');
+}
+
+function bratonien_tools_nc_wizard_select_user()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if (empty($state['scan_ok'])) throw new RuntimeException('Bitte zuerst Nextcloud erfolgreich scannen.');
+  if (empty($state['technical_complete'])) throw new RuntimeException('Die Verbindung ist noch nicht vollständig geprüft.');
+
+  $showcase_user = trim((string)($_POST['nc_wizard_showcase_user'] ?? ''));
+  $connection_name = trim((string)($_POST['nc_wizard_connection_name'] ?? $state['connection_name']));
+  if ($showcase_user === '') throw new RuntimeException('Bitte den Benutzer auswählen, der die Showcase-Freigaben bereitstellt.');
+  if ($connection_name === '') throw new RuntimeException('Bitte einen Namen für die Verbindung angeben.');
+
+  $state['connection_name'] = $connection_name;
+  $state['showcase_user'] = $showcase_user;
+  $state['step'] = 3;
+  $state['api_error'] = '';
+  bratonien_tools_nc_wizard_store($state);
+
+  return array('message'=>'Showcase-Benutzer übernommen. Jetzt folgt der Piwigo-API-Zugang.');
+}
+
 function bratonien_tools_nc_wizard_api_test()
 {
   $state = bratonien_tools_nc_wizard_state();
@@ -152,6 +500,14 @@ function bratonien_tools_nc_wizard_api_test()
 
   $key_id = trim((string)$state['_api_key_id']);
   $secret = trim((string)$state['_api_key_secret']);
+
+  if ($key_id === '' && $secret === '')
+  {
+    $stored = bratonien_tools_nc_api_credentials();
+    $key_id = trim((string)($stored['key_id'] ?? ''));
+    $secret = trim((string)($stored['key_secret'] ?? ''));
+  }
+
   if ($key_id === '' || $secret === '') throw new RuntimeException('API-Schlüssel-ID und API-Geheimnis fehlen.');
 
   try
@@ -198,6 +554,72 @@ function bratonien_tools_nc_wizard_api_skip()
   return array('message'=>'Piwigo-API wurde übersprungen. Für diese Verbindung ist deshalb ein Fallback-Zugang erforderlich.');
 }
 
+function bratonien_tools_nc_wizard_finish()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 4 || empty($state['technical_complete']) || trim((string)$state['showcase_user']) === '') throw new RuntimeException('Der Assistent ist noch nicht vollständig.');
+
+  if (array_key_exists('nc_wizard_fallback_user', $_POST)) $state['_fallback_user'] = trim((string)$_POST['nc_wizard_fallback_user']);
+  if (array_key_exists('nc_wizard_fallback_password', $_POST)) $state['_fallback_password'] = (string)$_POST['nc_wizard_fallback_password'];
+  bratonien_tools_nc_wizard_store($state);
+
+  $fallback_user = trim((string)$state['_fallback_user']);
+  $fallback_password = (string)$state['_fallback_password'];
+  if (($fallback_user === '') !== ($fallback_password === '')) throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort müssen entweder beide angegeben oder beide leer gelassen werden.');
+  if ($state['api_status'] !== 'ok' && $fallback_user === '') throw new RuntimeException('Da die Piwigo-API übersprungen wurde, ist ein Fallback-Zugang erforderlich.');
+
+  $storage_lines = array();
+  foreach ($state['storages'] as $storage)
+  {
+    $storage_lines[] = (string)$storage['storage_id'].' | '.trim((string)$storage['source_prefix'], '/').' | '.(string)$storage['local_mount'];
+  }
+
+  $_POST['nc_name'] = (string)$state['connection_name'];
+  $_POST['nc_host'] = (string)$state['db_host'];
+  $_POST['nc_port'] = (string)$state['db_port'];
+  $_POST['nc_database'] = (string)$state['db_database'];
+  $_POST['nc_user'] = (string)$state['db_user'];
+  $_POST['nc_db_password'] = (string)$state['_db_password'];
+  $_POST['nc_source_view'] = (string)$state['source_view'];
+  $_POST['nc_activity_view'] = (string)$state['activity_view'];
+  $_POST['nc_gallery_root'] = (string)$state['gallery_root'];
+  $_POST['nc_storages'] = implode("\n", $storage_lines);
+  $_POST['nc_quiet_seconds'] = '120';
+  $_POST['nc_max_wait_seconds'] = '900';
+  $_POST['nc_full_sync_seconds'] = '86400';
+  $_POST['nc_piwigo_user'] = $fallback_user;
+  $_POST['nc_piwigo_password'] = $fallback_password;
+  $_POST['nc_nextcloud_url'] = (string)$state['base_url'];
+  $_POST['nc_showcase_user'] = (string)$state['showcase_user'];
+  $_POST['nc_access_user'] = (string)$state['username'];
+  $_POST['nc_product'] = (string)$state['product'];
+  $_POST['nc_version'] = (string)$state['version'];
+  $_POST['nc_api_validated'] = $state['api_status'] === 'ok' ? '1' : '0';
+
+  $result = bratonien_tools_nc_connector_create_local_api_first();
+  $connection_id = (int)($result['connection_id'] ?? 0);
+
+  try
+  {
+    if ($state['api_status'] === 'ok') bratonien_tools_nc_api_credentials_store((string)$state['_api_key_id'], (string)$state['_api_key_secret']);
+  }
+  catch (Throwable $e)
+  {
+    if ($connection_id > 0)
+    {
+      $table = bratonien_tools_nc_connector_table();
+      pwg_query("DELETE FROM `$table` WHERE id=".$connection_id." LIMIT 1");
+    }
+    throw new RuntimeException('Die Verbindung wurde nicht übernommen, weil der geprüfte API-Zugang nicht gespeichert werden konnte: '.$e->getMessage());
+  }
+
+  unset($_SESSION['bratonien_nc_wizard']);
+  unset($result['connection_id']);
+  $result['message'] = 'Verbindung wurde vollständig durch den Assistenten angelegt. '.$result['message'];
+
+  return $result;
+}
+
 function bratonien_tools_nc_connector_update_name()
 {
   $id = (int)($_POST['connection_id'] ?? 0);
@@ -206,10 +628,6 @@ function bratonien_tools_nc_connector_update_name()
 
   $connection = bratonien_tools_nc_connector_connection($id, false);
   if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
-  if ((string)($connection['adapter'] ?? '') !== 'remote' || (string)($connection['config']['source_mode'] ?? '') !== 'webdav-placeholder')
-  {
-    throw new RuntimeException('Es können nur WebDAV-Verbindungen bearbeitet werden.');
-  }
 
   $table = bratonien_tools_nc_connector_table();
   $now = date('Y-m-d H:i:s');
@@ -217,3 +635,49 @@ function bratonien_tools_nc_connector_update_name()
 
   return array('message'=>'Verbindungsname wurde aktualisiert.');
 }
+
+function bratonien_tools_nc_connector_update_technical()
+{
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  if (!empty($connection['enabled']) || (string)$connection['takeover_state'] === 'active') throw new RuntimeException('Technische Einstellungen einer aktiven Verbindung können nicht geändert werden. Bitte zuerst deaktivieren.');
+
+  $config = $connection['config'];
+  $port = (int)($_POST['nc_port'] ?? ($config['port'] ?? 5432));
+  if ($port < 1 || $port > 65535) throw new RuntimeException('Ungültiger PostgreSQL-Port.');
+
+  $gallery_root = rtrim(trim((string)($_POST['nc_gallery_root'] ?? ($config['gallery_root'] ?? ''))), '/');
+  if ($gallery_root === '' || $gallery_root[0] !== '/') throw new RuntimeException('Der Galerie-Pfad muss ein absoluter Pfad sein.');
+
+  $config['host'] = trim((string)($_POST['nc_host'] ?? ($config['host'] ?? '')));
+  $config['port'] = (string)$port;
+  $config['database'] = trim((string)($_POST['nc_database'] ?? ($config['database'] ?? '')));
+  $config['user'] = trim((string)($_POST['nc_user'] ?? ($config['user'] ?? '')));
+  $config['source_view'] = trim((string)($_POST['nc_source_view'] ?? ($config['source_view'] ?? '')));
+  $config['activity_view'] = trim((string)($_POST['nc_activity_view'] ?? ($config['activity_view'] ?? '')));
+  $config['gallery_root'] = $gallery_root;
+  $config['quiet_seconds'] = max(0, (int)($_POST['nc_quiet_seconds'] ?? ($config['quiet_seconds'] ?? 120)));
+  $config['max_wait_seconds'] = max(60, (int)($_POST['nc_max_wait_seconds'] ?? ($config['max_wait_seconds'] ?? 900)));
+  $config['full_sync_seconds'] = max(300, (int)($_POST['nc_full_sync_seconds'] ?? ($config['full_sync_seconds'] ?? 86400)));
+  $config['storages'] = bratonien_tools_nc_connector_parse_storages($_POST['nc_storages'] ?? '');
+  unset($config['verification']);
+
+  bratonien_tools_nc_connector_view_name($config['source_view']);
+  bratonien_tools_nc_connector_view_name($config['activity_view']);
+
+  $credentials = bratonien_tools_nc_connector_credentials_from_blob($connection['secret_blob'] ?? '');
+  $db_password = (string)($_POST['nc_db_password'] ?? '');
+  if ($db_password === '') $db_password = $credentials['db_password'];
+  if ($db_password === '') throw new RuntimeException('Datenbankpasswort fehlt.');
+
+  $secret_blob = bratonien_tools_nc_connector_encrypt_credentials($db_password, $credentials['piwigo_user'], $credentials['piwigo_password']);
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Connector-Konfiguration konnte nicht serialisiert werden.');
+
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET takeover_state='disabled', enabled=0, config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$id." LIMIT 1");
+
+  return array('message'=>'Technische Verbindungseinstellungen wurden gespeichert. Die Verbindung muss erneut geprüft werden.');
+}

include/nc_connector_wizard_db_bridge.inc.php

@@ -0,0 +1,448 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_apply_known_database_profile(array &$state)
+{
+  if (empty($state['scan_ok']) || trim((string)($state['base_url'] ?? '')) === '') return false;
+
+  $base_host = strtolower(trim((string)parse_url((string)$state['base_url'], PHP_URL_HOST)));
+
+  foreach (bratonien_tools_nc_connector_connections() as $candidate)
+  {
+    $config = isset($candidate['config']) && is_array($candidate['config']) ? $candidate['config'] : array();
+    $candidate_url = trim((string)($config['nextcloud_url'] ?? ''));
+    $match = false;
+
+    if ($candidate_url !== '')
+    {
+      try
+      {
+        $match = bratonien_tools_nc_wizard_normalize_url($candidate_url) === (string)$state['base_url'];
+      }
+      catch (Throwable $ignored)
+      {
+        $match = false;
+      }
+    }
+    elseif ($base_host !== '')
+    {
+      $match = strtolower(trim((string)($config['host'] ?? ''))) === $base_host;
+    }
+
+    if (!$match) continue;
+
+    $connection = bratonien_tools_nc_connector_connection((int)$candidate['id'], true);
+    if (!$connection || !is_array($connection['config'] ?? null)) continue;
+
+    $known = $connection['config'];
+    $db_user = trim((string)($known['user'] ?? ''));
+    if ($db_user === '') continue;
+
+    $db_password = '';
+    try
+    {
+      $plain = bratonien_tools_nc_connector_decrypt_secret($connection['secret_blob'] ?? '');
+      $decoded = json_decode($plain, true);
+      $db_password = is_array($decoded) && array_key_exists('db_password', $decoded)
+        ? (string)$decoded['db_password']
+        : (string)$plain;
+    }
+    catch (Throwable $ignored)
+    {
+      $db_password = '';
+    }
+    if ($db_password === '') continue;
+
+    $state['db_host'] = trim((string)($known['host'] ?? $state['db_host']));
+    $state['db_port'] = trim((string)($known['port'] ?? $state['db_port']));
+    $state['db_database'] = trim((string)($known['database'] ?? $state['db_database']));
+    $state['db_user'] = $db_user;
+    $state['_db_password'] = $db_password;
+    $state['db_password_set'] = true;
+    $state['source_view'] = trim((string)($known['source_view'] ?? $state['source_view']));
+    $state['activity_view'] = trim((string)($known['activity_view'] ?? $state['activity_view']));
+    $state['gallery_root'] = trim((string)($known['gallery_root'] ?? $state['gallery_root']));
+    $state['storages'] = isset($known['storages']) && is_array($known['storages']) ? $known['storages'] : array();
+    $state['storage_candidates'] = $state['storages'];
+    $state['technical_source'] = 'Gespeicherte Reader-Verbindung wird erneut geprüft';
+    $state['technical_error'] = '';
+    return true;
+  }
+
+  return false;
+}
+
+function bratonien_tools_nc_wizard_prepare_directory_stage(array &$state, array $known_storages)
+{
+  if ((string)($state['technical_stage'] ?? '') === 'database_details') return;
+
+  $known_by_storage = array();
+  foreach ($known_storages as $known)
+  {
+    $storage_id = trim((string)($known['storage_id'] ?? ''));
+    $mount = rtrim(trim((string)($known['local_mount'] ?? '')), '/');
+    if ($storage_id === '' || $mount === '') continue;
+    if (!isset($known_by_storage[$storage_id])) $known_by_storage[$storage_id] = $known;
+  }
+
+  $candidates = isset($state['storage_candidates']) && is_array($state['storage_candidates']) ? $state['storage_candidates'] : array();
+  $all_mapped = !empty($candidates);
+
+  foreach ($candidates as &$candidate)
+  {
+    $storage_id = trim((string)($candidate['storage_id'] ?? ''));
+    $known = isset($known_by_storage[$storage_id]) ? $known_by_storage[$storage_id] : null;
+    if (is_array($known))
+    {
+      $candidate['source_prefix'] = trim((string)($known['source_prefix'] ?? $candidate['source_prefix'] ?? ''), '/');
+      $candidate['local_mount'] = rtrim(trim((string)($known['local_mount'] ?? '')), '/');
+    }
+
+    $mount = trim((string)($candidate['local_mount'] ?? ''));
+    if ($mount === '' || !is_dir($mount) || !is_readable($mount)) $all_mapped = false;
+    $candidate['include_prefix'] = '';
+  }
+  unset($candidate);
+
+  $state['storage_candidates'] = $candidates;
+  $state['storages'] = array();
+  $state['technical_complete'] = false;
+  $state['technical_stage'] = 'mounts';
+  $state['technical_source'] = $all_mapped
+    ? 'Datenzugriff und Speicherzuordnung erkannt; Verzeichnisauswahl offen'
+    : 'Datenzugriff erkannt; Speicherzuordnung muss bestätigt werden';
+  $state['directory_selection_ready'] = $all_mapped;
+}
+
+function bratonien_tools_nc_wizard_finish_data_access_for_selection(array &$state, array $known_storages)
+{
+  bratonien_tools_nc_wizard_finish_data_access($state);
+  bratonien_tools_nc_wizard_prepare_directory_stage($state, $known_storages);
+}
+
+function bratonien_tools_nc_wizard_scan_with_known_database()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $host_input = trim((string)($_POST['nc_wizard_host'] ?? $state['host_input']));
+  $username = trim((string)($_POST['nc_wizard_user'] ?? $state['username']));
+  $password = array_key_exists('nc_wizard_password', $_POST) ? (string)$_POST['nc_wizard_password'] : (string)$state['_password'];
+
+  $state['step'] = 1;
+  $state['host_input'] = $host_input;
+  $state['username'] = $username;
+  $state['_password'] = $password;
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($username === '' || $password === '') throw new RuntimeException('Nextcloud-Benutzer und Passwort werden für den Scan benötigt.');
+
+  $base_url = '';
+  $status_data = null;
+  foreach (bratonien_tools_nc_wizard_candidate_urls($host_input) as $candidate_url)
+  {
+    try
+    {
+      $response = bratonien_tools_nc_wizard_http($candidate_url.'/status.php');
+      if ($response['status'] < 200 || $response['status'] >= 300) continue;
+      $candidate_status = json_decode($response['body'], true);
+      if (!is_array($candidate_status) || empty($candidate_status['installed'])) continue;
+      $base_url = $candidate_url;
+      $status_data = $candidate_status;
+      break;
+    }
+    catch (Throwable $ignored)
+    {
+    }
+  }
+
+  if ($base_url === '' || !is_array($status_data)) throw new RuntimeException('Unter dieser Adresse konnte keine Nextcloud erreicht werden. HTTP und HTTPS wurden automatisch geprüft.');
+
+  $user_response = bratonien_tools_nc_wizard_http(
+    $base_url.'/ocs/v2.php/cloud/user?format=json',
+    $username,
+    $password,
+    array('OCS-APIRequest: true')
+  );
+  if ($user_response['status'] === 401 || $user_response['status'] === 403) throw new RuntimeException('Nextcloud hat Benutzername oder Passwort abgelehnt.');
+  if ($user_response['status'] < 200 || $user_response['status'] >= 300) throw new RuntimeException('Nextcloud ist erreichbar, aber die Anmeldung konnte nicht geprüft werden.');
+
+  $user_data = bratonien_tools_nc_wizard_ocs_data($user_response['body']);
+  $users = array();
+  $can_list_users = false;
+  try
+  {
+    $users_response = bratonien_tools_nc_wizard_http(
+      $base_url.'/ocs/v2.php/cloud/users?format=json',
+      $username,
+      $password,
+      array('OCS-APIRequest: true')
+    );
+    if ($users_response['status'] >= 200 && $users_response['status'] < 300)
+    {
+      $users_data = bratonien_tools_nc_wizard_ocs_data($users_response['body']);
+      if (isset($users_data['users']) && is_array($users_data['users']))
+      {
+        $users = array_values(array_filter(array_map('strval', $users_data['users'])));
+        sort($users, SORT_NATURAL | SORT_FLAG_CASE);
+        $can_list_users = true;
+      }
+    }
+  }
+  catch (Throwable $ignored)
+  {
+  }
+
+  $resolved_username = trim((string)($user_data['id'] ?? $username));
+  if ($resolved_username === '') $resolved_username = $username;
+  $url_host = (string)parse_url($base_url, PHP_URL_HOST);
+
+  $state = array_merge($state, array(
+    'step'=>2,
+    'scan_ok'=>true,
+    'base_url'=>$base_url,
+    'host_input'=>$host_input,
+    'username'=>$resolved_username,
+    'display_name'=>(string)($user_data['display-name'] ?? $user_data['displayname'] ?? ''),
+    'version'=>(string)($status_data['versionstring'] ?? $status_data['version'] ?? ''),
+    'product'=>(string)($status_data['productname'] ?? 'Nextcloud'),
+    'users'=>$users,
+    'can_list_users'=>$can_list_users,
+    'showcase_user'=>'',
+    'connection_name'=>$url_host !== '' ? $url_host : 'Nextcloud',
+    'scan_message'=>'Nextcloud wurde erkannt und der Benutzerzugriff wurde bestätigt.',
+    '_password'=>$password,
+    'api_status'=>'pending','api_username'=>'','api_error'=>'',
+    'db_host'=>strtolower($url_host),'db_port'=>'5432','db_database'=>'nextcloud','db_user'=>'','db_password_set'=>false,'_db_password'=>'',
+    'source_view'=>'piwigo_showcase_sources','activity_view'=>'piwigo_showcase_activity',
+    'gallery_root'=>rtrim(PHPWG_ROOT_PATH, '/').'/galleries/nextcloud',
+    'storages'=>array(),'storage_candidates'=>array(),
+    'technical_stage'=>'auto_check','technical_source'=>'Automatische Prüfung','technical_error'=>'','technical_complete'=>false,
+    'directory_selection_ready'=>false,
+  ));
+
+  if (!bratonien_tools_nc_wizard_apply_known_database_profile($state))
+  {
+    $state['technical_stage'] = 'database_details';
+    $state['technical_source'] = 'Keine bekannte Reader-Verbindung gefunden';
+    $state['technical_error'] = 'Für diese Nextcloud ist noch keine bekannte Datenbank-Reader-Verbindung gespeichert. Die Nextcloud-Anmeldedaten werden nicht als PostgreSQL-Zugang verwendet.';
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>'Nextcloud wurde gefunden. Für den Datenzugriff wird eine separate Reader-Verbindung benötigt.');
+  }
+
+  $known_storages = isset($state['storages']) && is_array($state['storages']) ? $state['storages'] : array();
+  try
+  {
+    bratonien_tools_nc_wizard_finish_data_access_for_selection($state, $known_storages);
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'database_details';
+    $state['technical_error'] = $e->getMessage();
+  }
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($state['technical_stage'] === 'database_details') return array('message'=>'Nextcloud wurde gefunden. Die bekannte Reader-Verbindung konnte noch nicht vollständig bestätigt werden.');
+  return array('message'=>'Nextcloud und Datenzugriff wurden bestätigt. Jetzt können die gewünschten Verzeichnisse gewählt werden.');
+}
+
+function bratonien_tools_nc_wizard_save_technical_with_known_database()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if (empty($state['scan_ok'])) throw new RuntimeException('Bitte zuerst Nextcloud erfolgreich scannen.');
+  if (trim((string)($state['db_user'] ?? '')) === '' || (string)($state['_db_password'] ?? '') === '') bratonien_tools_nc_wizard_apply_known_database_profile($state);
+  if (trim((string)($state['db_user'] ?? '')) === '' || (string)($state['_db_password'] ?? '') === '') throw new RuntimeException('Für diese Nextcloud sind noch keine Datenbank-Reader-Zugangsdaten bekannt. Nextcloud-Benutzer und -Passwort werden dafür bewusst nicht verwendet.');
+
+  $known_storages = isset($state['storages']) && is_array($state['storages']) ? $state['storages'] : array();
+  $state['db_host'] = trim((string)($_POST['nc_wizard_db_host'] ?? $state['db_host']));
+  $state['db_port'] = (string)max(1, min(65535, (int)($_POST['nc_wizard_db_port'] ?? $state['db_port'])));
+  $state['db_database'] = trim((string)($_POST['nc_wizard_db_database'] ?? $state['db_database']));
+  if ($state['db_host'] === '' || $state['db_database'] === '') throw new RuntimeException('Die Adresse der Datenbank ist noch unvollständig.');
+
+  try
+  {
+    bratonien_tools_nc_wizard_finish_data_access_for_selection($state, $known_storages);
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>'Datenzugriff wurde erfolgreich geprüft. Jetzt können die gewünschten Verzeichnisse gewählt werden.');
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_error'] = $e->getMessage();
+    $state['technical_stage'] = 'database_details';
+    bratonien_tools_nc_wizard_store($state);
+    throw $e;
+  }
+}
+
+function bratonien_tools_nc_wizard_directory_options(array $state)
+{
+  if (empty($state['scan_ok']) || trim((string)($state['db_user'] ?? '')) === '' || (string)($state['_db_password'] ?? '') === '') return array();
+
+  $config = array('host'=>$state['db_host'],'port'=>$state['db_port'],'database'=>$state['db_database'],'user'=>$state['db_user']);
+  $source_view = bratonien_tools_nc_connector_view_name($state['source_view']);
+  $rows = bratonien_tools_nc_connector_psql($config, (string)$state['_db_password'], "SELECT DISTINCT storage_id::text || E'\\t' || COALESCE(source_path, '') FROM ".$source_view." ORDER BY 1");
+
+  $paths = array();
+  foreach (preg_split('/\r\n|\r|\n/', trim($rows)) as $line)
+  {
+    if ($line === '') continue;
+    $parts = explode("\t", $line, 2);
+    if (count($parts) !== 2) continue;
+    $storage_id = trim($parts[0]);
+    $source_path = trim($parts[1], '/');
+    if ($storage_id === '') continue;
+    if (!isset($paths[$storage_id])) $paths[$storage_id] = array();
+    $paths[$storage_id][] = $source_path;
+  }
+
+  $result = array();
+  foreach ((array)($state['storage_candidates'] ?? array()) as $index=>$candidate)
+  {
+    $storage_id = trim((string)($candidate['storage_id'] ?? ''));
+    $mapping_prefix = trim((string)($candidate['source_prefix'] ?? ''), '/');
+    $options = array(''=>'Stammverzeichnis');
+
+    foreach (($paths[$storage_id] ?? array()) as $source_path)
+    {
+      $relative = $source_path;
+      if ($mapping_prefix !== '')
+      {
+        if ($source_path === $mapping_prefix) $relative = '';
+        elseif (strpos($source_path, $mapping_prefix.'/') === 0) $relative = substr($source_path, strlen($mapping_prefix) + 1);
+        else continue;
+      }
+      $relative = trim($relative, '/');
+      if ($relative === '') continue;
+      $segments = explode('/', $relative);
+      $current = '';
+      foreach ($segments as $segment)
+      {
+        if ($segment === '') continue;
+        $current = $current === '' ? $segment : $current.'/'.$segment;
+        $options[$current] = $current;
+      }
+    }
+
+    if (count($options) > 1)
+    {
+      $root = $options[''];
+      unset($options['']);
+      natcasesort($options);
+      $options = array(''=>$root) + $options;
+    }
+
+    $result[] = array(
+      'index'=>(int)$index,
+      'storage_id'=>$storage_id,
+      'mount'=>(string)($candidate['local_mount'] ?? ''),
+      'ready'=>trim((string)($candidate['local_mount'] ?? '')) !== '',
+      'options'=>$options,
+    );
+  }
+  return $result;
+}
+
+function bratonien_tools_nc_wizard_save_mounts_with_directories()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $candidates = isset($state['storage_candidates']) && is_array($state['storage_candidates']) ? $state['storage_candidates'] : array();
+  if (!$candidates) throw new RuntimeException('Es wurden noch keine Speicherorte erkannt.');
+
+  $mounts = isset($_POST['nc_wizard_storage_mount']) && is_array($_POST['nc_wizard_storage_mount']) ? $_POST['nc_wizard_storage_mount'] : array();
+  $directories = isset($_POST['nc_wizard_directory']) && is_array($_POST['nc_wizard_directory']) ? $_POST['nc_wizard_directory'] : array();
+  $storages = array();
+
+  foreach ($candidates as $index=>$candidate)
+  {
+    $mount = rtrim(trim((string)($candidate['local_mount'] ?? '')), '/');
+    if ($mount === '') $mount = rtrim(trim((string)($mounts[$index] ?? '')), '/');
+    if ($mount === '' || $mount[0] !== '/') throw new RuntimeException('Für einen Speicherort fehlt ein gültiger lokaler Pfad.');
+    if (!is_dir($mount) || !is_readable($mount)) throw new RuntimeException('Der angegebene Speicherort ist nicht vorhanden oder nicht lesbar: '.$mount);
+
+    $selected = isset($directories[$index]) && is_array($directories[$index]) ? $directories[$index] : array();
+    $normalized = array();
+    foreach ($selected as $directory)
+    {
+      $directory = trim((string)$directory, '/');
+      if ($directory === '') continue;
+      if ($directory[0] === '/' || preg_match('#(^|/)\.\.(/|$)#', $directory)) throw new RuntimeException('Ungültige Verzeichnisauswahl.');
+      $normalized[$directory] = true;
+    }
+    if (!$normalized) $normalized[''] = true;
+
+    foreach (array_keys($normalized) as $include_prefix)
+    {
+      $storages[] = array(
+        'storage_id'=>(string)($candidate['storage_id'] ?? ''),
+        'source_prefix'=>trim((string)($candidate['source_prefix'] ?? ''), '/'),
+        'local_mount'=>$mount,
+        'include_prefix'=>$include_prefix,
+      );
+    }
+  }
+
+  $state['storages'] = $storages;
+  $state['technical_complete'] = true;
+  $state['technical_stage'] = 'ready';
+  $state['technical_error'] = '';
+  $state['directory_selection_ready'] = false;
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>'Verzeichnisauswahl wurde übernommen.');
+}
+
+function bratonien_tools_nc_wizard_finish_with_directories()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 4 || empty($state['technical_complete']) || trim((string)$state['showcase_user']) === '') throw new RuntimeException('Der Assistent ist noch nicht vollständig.');
+
+  if (array_key_exists('nc_wizard_fallback_user', $_POST)) $state['_fallback_user'] = trim((string)$_POST['nc_wizard_fallback_user']);
+  if (array_key_exists('nc_wizard_fallback_password', $_POST)) $state['_fallback_password'] = (string)$_POST['nc_wizard_fallback_password'];
+  bratonien_tools_nc_wizard_store($state);
+
+  $fallback_user = trim((string)$state['_fallback_user']);
+  $fallback_password = (string)$state['_fallback_password'];
+  if (($fallback_user === '') !== ($fallback_password === '')) throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort müssen entweder beide angegeben oder beide leer gelassen werden.');
+  if ($state['api_status'] !== 'ok' && $fallback_user === '') throw new RuntimeException('Da die Piwigo-API übersprungen wurde, ist ein Fallback-Zugang erforderlich.');
+
+  $mapping_lines = array();
+  foreach ((array)$state['storages'] as $storage)
+  {
+    $key = (string)$storage['storage_id'].'|'.trim((string)$storage['source_prefix'], '/').'|'.(string)$storage['local_mount'];
+    $mapping_lines[$key] = (string)$storage['storage_id'].' | '.trim((string)$storage['source_prefix'], '/').' | '.(string)$storage['local_mount'];
+  }
+
+  $_POST['nc_name']=(string)$state['connection_name'];$_POST['nc_host']=(string)$state['db_host'];$_POST['nc_port']=(string)$state['db_port'];$_POST['nc_database']=(string)$state['db_database'];$_POST['nc_user']=(string)$state['db_user'];$_POST['nc_db_password']=(string)$state['_db_password'];
+  $_POST['nc_source_view']=(string)$state['source_view'];$_POST['nc_activity_view']=(string)$state['activity_view'];$_POST['nc_gallery_root']=(string)$state['gallery_root'];$_POST['nc_storages']=implode("\n",array_values($mapping_lines));
+  $_POST['nc_quiet_seconds']='120';$_POST['nc_max_wait_seconds']='900';$_POST['nc_full_sync_seconds']='86400';$_POST['nc_piwigo_user']=$fallback_user;$_POST['nc_piwigo_password']=$fallback_password;
+  $_POST['nc_nextcloud_url']=(string)$state['base_url'];$_POST['nc_showcase_user']=(string)$state['showcase_user'];$_POST['nc_access_user']=(string)$state['username'];$_POST['nc_product']=(string)$state['product'];$_POST['nc_version']=(string)$state['version'];$_POST['nc_api_validated']=$state['api_status']==='ok'?'1':'0';
+
+  $result = bratonien_tools_nc_connector_create_local_api_first();
+  $connection_id = (int)($result['connection_id'] ?? 0);
+  if ($connection_id < 1) throw new RuntimeException('Die neue Verbindung konnte nicht gespeichert werden.');
+
+  $connection = bratonien_tools_nc_connector_connection($connection_id, false);
+  if (!$connection) throw new RuntimeException('Die neue Verbindung konnte nach dem Anlegen nicht gelesen werden.');
+  $config = $connection['config'];
+  $config['storages'] = array_values($state['storages']);
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json)) throw new RuntimeException('Die Verzeichnisauswahl konnte nicht serialisiert werden.');
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$connection_id." LIMIT 1");
+
+  try
+  {
+    if ($state['api_status'] === 'ok') bratonien_tools_nc_api_credentials_store((string)$state['_api_key_id'], (string)$state['_api_key_secret']);
+  }
+  catch (Throwable $e)
+  {
+    pwg_query("DELETE FROM `$table` WHERE id=".$connection_id." LIMIT 1");
+    throw new RuntimeException('Die Verbindung wurde nicht übernommen, weil der geprüfte API-Zugang nicht gespeichert werden konnte: '.$e->getMessage());
+  }
+
+  unset($_SESSION['bratonien_nc_wizard']);
+  unset($result['connection_id']);
+  $result['message'] = 'Verbindung wurde vollständig durch den Assistenten angelegt. '.$result['message'];
+  return $result;
+}

include/nc_connector_wizard_flow.inc.php

@@ -0,0 +1,10 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_save_technical_flow()
+{
+  return bratonien_tools_nc_wizard_save_technical_generic();
+}

include/nc_connector_wizard_user_scope.inc.php

@@ -112,6 +112,256 @@ function bratonien_tools_nc_wizard_refresh_directory_state(array &$state, $path
   if (!isset($state['directory_selected_fileids']) || !is_array($state['directory_selected_fileids'])) $state['directory_selected_fileids'] = array();
 }
 
+function bratonien_tools_nc_wizard_generic_db_config(array $state)
+{
+  return array(
+    'host'=>(string)$state['db_host'],
+    'port'=>(string)$state['db_port'],
+    'database'=>(string)$state['db_database'],
+    'user'=>(string)$state['db_user'],
+  );
+}
+
+function bratonien_tools_nc_wizard_verify_generic_data_access(array &$state)
+{
+  $config = bratonien_tools_nc_wizard_generic_db_config($state);
+  $password = (string)$state['_db_password'];
+  if (trim((string)$config['user']) === '' || $password === '') throw new RuntimeException('Die gespeicherte Reader-Verbindung ist unvollständig.');
+
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT 1');
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT 1 FROM piwigo_connector_files LIMIT 1');
+  bratonien_tools_nc_connector_psql($config, $password, 'SELECT 1 FROM piwigo_connector_activity LIMIT 1');
+
+  $state['source_view'] = 'piwigo_connector_files';
+  $state['activity_view'] = 'piwigo_connector_activity';
+  $state['source_mode'] = 'selected-fileids';
+  $state['storages'] = array();
+  $state['storage_candidates'] = array();
+  $state['roots'] = array();
+  $state['technical_complete'] = false;
+  $state['technical_stage'] = 'mounts';
+  $state['technical_source'] = 'Generische Reader-Schnittstelle geprüft';
+  $state['technical_error'] = '';
+  $state['directory_selection_ready'] = true;
+}
+
+function bratonien_tools_nc_wizard_known_adapter($storage_id, $source_path)
+{
+  $storage_id = trim((string)$storage_id);
+  $source_path = trim((string)$source_path, '/');
+  $matches = array();
+
+  foreach (bratonien_tools_nc_connector_connections() as $connection)
+  {
+    foreach ((array)($connection['config']['storages'] ?? array()) as $storage)
+    {
+      if ((string)($storage['storage_id'] ?? '') !== $storage_id) continue;
+      $prefix = trim((string)($storage['source_prefix'] ?? ''), '/');
+      if ($prefix !== '' && $source_path !== $prefix && strpos($source_path, $prefix.'/') !== 0) continue;
+      $mount = rtrim(trim((string)($storage['local_mount'] ?? '')), '/');
+      if ($mount === '' || !is_dir($mount) || !is_readable($mount)) continue;
+      $key = $prefix.'|'.$mount;
+      $matches[$key] = array('storage_id'=>$storage_id,'source_prefix'=>$prefix,'local_mount'=>$mount);
+    }
+  }
+
+  if (!$matches) return null;
+  $max = -1;
+  foreach ($matches as $match) $max = max($max, strlen((string)$match['source_prefix']));
+  $best = array_values(array_filter($matches, function($match) use ($max) { return strlen((string)$match['source_prefix']) === $max; }));
+  return count($best) === 1 ? $best[0] : null;
+}
+
+function bratonien_tools_nc_wizard_resolve_selected_roots(array &$state)
+{
+  $selected = isset($state['directory_selected']) && is_array($state['directory_selected']) ? $state['directory_selected'] : array();
+  $selected_fileids = isset($state['directory_selected_fileids']) && is_array($state['directory_selected_fileids']) ? $state['directory_selected_fileids'] : array();
+  if (!$selected) throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis auswählen.');
+
+  $ids = array();
+  foreach ($selected as $path)
+  {
+    if (!isset($selected_fileids[$path]) || (int)$selected_fileids[$path] < 1) throw new RuntimeException('Für eine Auswahl fehlt die eindeutige Nextcloud-Datei-ID. Bitte das Verzeichnis erneut auswählen.');
+    $ids[(int)$selected_fileids[$path]] = (string)$path;
+  }
+
+  $config = bratonien_tools_nc_wizard_generic_db_config($state);
+  $id_list = implode(',', array_map('intval', array_keys($ids)));
+  $rows = bratonien_tools_nc_connector_psql(
+    $config,
+    (string)$state['_db_password'],
+    "SELECT fileid::text || E'\\t' || storage_id || E'\\t' || COALESCE(source_path, '') FROM piwigo_connector_files WHERE fileid IN (".$id_list.") ORDER BY fileid"
+  );
+
+  $resolved = array();
+  foreach (preg_split('/\r\n|\r|\n/', trim($rows)) as $line)
+  {
+    if ($line === '') continue;
+    $parts = explode("\t", $line, 3);
+    if (count($parts) !== 3 || !ctype_digit($parts[0])) continue;
+    $resolved[(int)$parts[0]] = array('storage_id'=>(string)$parts[1], 'source_path'=>trim((string)$parts[2], '/'));
+  }
+
+  $roots = array();
+  $candidates = array();
+  foreach ($ids as $fileid=>$path)
+  {
+    if (!isset($resolved[$fileid])) throw new RuntimeException('Das ausgewählte Nextcloud-Verzeichnis mit Datei-ID '.$fileid.' konnte nicht mehr aufgelöst werden.');
+    $storage_id = trim((string)$resolved[$fileid]['storage_id']);
+    $source_path = trim((string)$resolved[$fileid]['source_path'], '/');
+    if ($storage_id === '') throw new RuntimeException('Nextcloud hat für Datei-ID '.$fileid.' keine Storage-ID geliefert.');
+
+    $display_name = $path === '' ? ((string)($state['display_name'] ?? '') !== '' ? (string)$state['display_name'] : 'Nextcloud') : basename($path);
+    $roots[] = array(
+      'fileid'=>(int)$fileid,
+      'display_name'=>$display_name,
+      'webdav_path'=>$path,
+      'storage_id'=>$storage_id,
+      'source_path'=>$source_path,
+    );
+
+    $adapter = bratonien_tools_nc_wizard_known_adapter($storage_id, $source_path);
+    if (!$adapter) $adapter = array('storage_id'=>$storage_id,'source_prefix'=>'','local_mount'=>'');
+    $key = $adapter['storage_id'].'|'.$adapter['source_prefix'].'|'.$adapter['local_mount'];
+    $candidates[$key] = $adapter;
+  }
+
+  $state['roots'] = array_values($roots);
+  $state['storage_candidates'] = array_values($candidates);
+  $state['storages'] = $state['storage_candidates'];
+
+  $all_mapped = !empty($state['storage_candidates']);
+  foreach ($state['storage_candidates'] as $candidate)
+  {
+    $mount = rtrim(trim((string)($candidate['local_mount'] ?? '')), '/');
+    if ($mount === '' || !is_dir($mount) || !is_readable($mount)) $all_mapped = false;
+  }
+
+  if ($all_mapped)
+  {
+    $state['technical_complete'] = true;
+    $state['technical_stage'] = 'ready';
+    $state['directory_selection_ready'] = false;
+    return;
+  }
+
+  $state['technical_complete'] = false;
+  $state['technical_stage'] = 'mounts';
+  $state['directory_selection_ready'] = false;
+  $state['mount_prompted'] = true;
+}
+
+function bratonien_tools_nc_wizard_scan_user_scoped()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $host_input = trim((string)($_POST['nc_wizard_host'] ?? $state['host_input']));
+  $username = trim((string)($_POST['nc_wizard_user'] ?? $state['username']));
+  $password = array_key_exists('nc_wizard_password', $_POST) ? (string)$_POST['nc_wizard_password'] : (string)$state['_password'];
+
+  $state['step'] = 1;
+  $state['host_input'] = $host_input;
+  $state['username'] = $username;
+  $state['_password'] = $password;
+  bratonien_tools_nc_wizard_store($state);
+  if ($username === '' || $password === '') throw new RuntimeException('Nextcloud-Benutzer und Passwort werden für den Scan benötigt.');
+
+  $base_url = '';
+  $status_data = null;
+  foreach (bratonien_tools_nc_wizard_candidate_urls($host_input) as $candidate_url)
+  {
+    try
+    {
+      $response = bratonien_tools_nc_wizard_http($candidate_url.'/status.php');
+      if ($response['status'] < 200 || $response['status'] >= 300) continue;
+      $candidate_status = json_decode($response['body'], true);
+      if (!is_array($candidate_status) || empty($candidate_status['installed'])) continue;
+      $base_url = $candidate_url;
+      $status_data = $candidate_status;
+      break;
+    }
+    catch (Throwable $ignored) {}
+  }
+  if ($base_url === '' || !is_array($status_data)) throw new RuntimeException('Unter dieser Adresse konnte keine Nextcloud erreicht werden. HTTP und HTTPS wurden automatisch geprüft.');
+
+  $user_response = bratonien_tools_nc_wizard_http($base_url.'/ocs/v2.php/cloud/user?format=json', $username, $password, array('OCS-APIRequest: true'));
+  if ($user_response['status'] === 401 || $user_response['status'] === 403) throw new RuntimeException('Nextcloud hat Benutzername oder Passwort abgelehnt.');
+  if ($user_response['status'] < 200 || $user_response['status'] >= 300) throw new RuntimeException('Nextcloud ist erreichbar, aber die Anmeldung konnte nicht geprüft werden.');
+
+  $user_data = bratonien_tools_nc_wizard_ocs_data($user_response['body']);
+  $resolved_username = trim((string)($user_data['id'] ?? $username));
+  if ($resolved_username === '') $resolved_username = $username;
+  $url_host = (string)parse_url($base_url, PHP_URL_HOST);
+
+  $state = array_merge($state, array(
+    'step'=>2,'scan_ok'=>true,'base_url'=>$base_url,'host_input'=>$host_input,'username'=>$resolved_username,
+    'display_name'=>(string)($user_data['display-name'] ?? $user_data['displayname'] ?? ''),
+    'version'=>(string)($status_data['versionstring'] ?? $status_data['version'] ?? ''),'product'=>(string)($status_data['productname'] ?? 'Nextcloud'),
+    'users'=>array(),'can_list_users'=>false,'showcase_user'=>$resolved_username,'connection_name'=>$url_host !== '' ? $url_host : 'Nextcloud',
+    'scan_message'=>'Nextcloud wurde erkannt und der Benutzerzugriff wurde bestätigt.','_password'=>$password,
+    'api_status'=>'pending','api_username'=>'','api_error'=>'','db_host'=>strtolower($url_host),'db_port'=>'5432','db_database'=>'nextcloud','db_user'=>'','db_password_set'=>false,'_db_password'=>'',
+    'source_view'=>'piwigo_connector_files','activity_view'=>'piwigo_connector_activity','source_mode'=>'selected-fileids','gallery_root'=>rtrim(PHPWG_ROOT_PATH, '/').'/galleries/nextcloud',
+    'storages'=>array(),'storage_candidates'=>array(),'roots'=>array(),'technical_stage'=>'auto_check','technical_source'=>'Automatische Prüfung','technical_error'=>'','technical_complete'=>false,
+    'directory_selection_ready'=>false,'directory_path'=>'','directory_parent'=>'','directory_children'=>array(),'directory_current_fileid'=>0,'directory_fileids'=>array(),'directory_selected'=>array(),'directory_selected_fileids'=>array(),
+    'database_prompted'=>false,'mount_prompted'=>false,
+  ));
+
+  if (!bratonien_tools_nc_wizard_apply_known_database_profile($state))
+  {
+    $state['technical_stage'] = 'database_details';
+    $state['database_prompted'] = true;
+    $state['technical_source'] = 'Keine bekannte Reader-Verbindung gefunden';
+    $state['technical_error'] = 'Für diese Nextcloud ist noch keine bekannte Datenbank-Reader-Verbindung gespeichert.';
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>'Nextcloud wurde gefunden. Für den Datenzugriff wird eine separate Reader-Verbindung benötigt.');
+  }
+
+  try
+  {
+    bratonien_tools_nc_wizard_verify_generic_data_access($state);
+    bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'database_details';
+    $state['database_prompted'] = true;
+    $state['technical_error'] = $e->getMessage().' Die generischen Connector-Views müssen in Nextcloud eingerichtet sein.';
+  }
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($state['technical_stage'] === 'database_details') return array('message'=>'Nextcloud wurde gefunden. Die generische Reader-Schnittstelle konnte noch nicht bestätigt werden.');
+  return array('message'=>'Nextcloud und generischer Datenzugriff wurden bestätigt. Jetzt können die Verzeichnisse des angemeldeten Benutzers gewählt werden.');
+}
+
+function bratonien_tools_nc_wizard_save_technical_generic()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if (empty($state['scan_ok'])) throw new RuntimeException('Bitte zuerst Nextcloud erfolgreich scannen.');
+  if (trim((string)($state['db_user'] ?? '')) === '' || (string)($state['_db_password'] ?? '') === '') bratonien_tools_nc_wizard_apply_known_database_profile($state);
+  if (trim((string)($state['db_user'] ?? '')) === '' || (string)($state['_db_password'] ?? '') === '') throw new RuntimeException('Für diese Nextcloud sind noch keine Datenbank-Reader-Zugangsdaten bekannt.');
+
+  $state['db_host'] = trim((string)($_POST['nc_wizard_db_host'] ?? $state['db_host']));
+  $state['db_port'] = (string)max(1, min(65535, (int)($_POST['nc_wizard_db_port'] ?? $state['db_port'])));
+  $state['db_database'] = trim((string)($_POST['nc_wizard_db_database'] ?? $state['db_database']));
+  if ($state['db_host'] === '' || $state['db_database'] === '') throw new RuntimeException('Die Adresse der Datenbank ist noch unvollständig.');
+
+  try
+  {
+    bratonien_tools_nc_wizard_verify_generic_data_access($state);
+    bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>'Generischer Datenzugriff wurde erfolgreich geprüft. Jetzt können Verzeichnisse ausgewählt werden.');
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_error'] = $e->getMessage();
+    $state['technical_stage'] = 'database_details';
+    $state['database_prompted'] = true;
+    bratonien_tools_nc_wizard_store($state);
+    throw $e;
+  }
+}
+
 function bratonien_tools_nc_wizard_directory_browse()
 {
   $state = bratonien_tools_nc_wizard_state();
@@ -150,6 +400,42 @@ function bratonien_tools_nc_wizard_directory_remove()
   return array('message'=>'Verzeichnis entfernt.');
 }
 
+function bratonien_tools_nc_wizard_save_mounts_server_side()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 2 || (string)$state['technical_stage'] !== 'mounts') throw new RuntimeException('Die Speicher-/Verzeichnisauswahl ist in diesem Fenster nicht verfügbar.');
+
+  if (!empty($state['directory_selection_ready']))
+  {
+    bratonien_tools_nc_wizard_resolve_selected_roots($state);
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>!empty($state['technical_complete']) ? 'Verzeichnisse und vorhandene Storage-Adapter wurden übernommen.' : 'Verzeichnisse wurden aufgelöst. Ein neuer Storage-Adapter muss noch zugeordnet werden.');
+  }
+
+  $candidates = isset($state['storage_candidates']) && is_array($state['storage_candidates']) ? $state['storage_candidates'] : array();
+  if (!$candidates) throw new RuntimeException('Es wurden noch keine Speicherorte aus der Verzeichnisauswahl aufgelöst.');
+  $mounts = isset($_POST['nc_wizard_storage_mount']) && is_array($_POST['nc_wizard_storage_mount']) ? $_POST['nc_wizard_storage_mount'] : array();
+
+  foreach ($candidates as $index=>&$candidate)
+  {
+    $mount = rtrim(trim((string)($candidate['local_mount'] ?? '')), '/');
+    if ($mount === '') $mount = rtrim(trim((string)($mounts[$index] ?? '')), '/');
+    if ($mount === '' || $mount[0] !== '/') throw new RuntimeException('Für einen Speicherort fehlt ein gültiger lokaler Pfad.');
+    if (!is_dir($mount) || !is_readable($mount)) throw new RuntimeException('Der angegebene Speicherort ist nicht vorhanden oder nicht lesbar: '.$mount);
+    $candidate['local_mount'] = $mount;
+  }
+  unset($candidate);
+
+  $state['storage_candidates'] = array_values($candidates);
+  $state['storages'] = $state['storage_candidates'];
+  $state['technical_complete'] = true;
+  $state['technical_stage'] = 'ready';
+  $state['technical_error'] = '';
+  $state['directory_selection_ready'] = false;
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>'Storage-Adapter wurde geprüft. Die Verbindung ist technisch vollständig.');
+}
+
 function bratonien_tools_nc_wizard_select_current_user()
 {
   $state = bratonien_tools_nc_wizard_state();
@@ -158,6 +444,7 @@ function bratonien_tools_nc_wizard_select_current_user()
   $connection_name = trim((string)($_POST['nc_wizard_connection_name'] ?? $state['connection_name']));
   if ($connection_name === '') throw new RuntimeException('Bitte einen Namen für die Verbindung angeben.');
   $state['connection_name'] = $connection_name;
+  $state['showcase_user'] = (string)$state['username'];
   $state['step'] = 3;
   $state['api_error'] = '';
   bratonien_tools_nc_wizard_store($state);
@@ -188,10 +475,23 @@ function bratonien_tools_nc_wizard_back()
     $state['directory_selection_ready'] = true;
     bratonien_tools_nc_wizard_refresh_directory_state($state);
   }
+  elseif ((string)($state['technical_stage'] ?? '') === 'mounts' && !empty($state['directory_selection_ready']))
+  {
+    if (!empty($state['database_prompted'])) $state['technical_stage'] = 'database_details'; else $state['step'] = 1;
+    $state['directory_selection_ready'] = false;
+  }
+  elseif ((string)($state['technical_stage'] ?? '') === 'mounts')
+  {
+    $state['directory_selection_ready'] = true;
+    bratonien_tools_nc_wizard_refresh_directory_state($state);
+  }
+  elseif ((string)($state['technical_stage'] ?? '') === 'database_details')
+  {
+    $state['step'] = 1;
+  }
   else
   {
     $state['step'] = 1;
-    $state['directory_selection_ready'] = false;
   }
 
   bratonien_tools_nc_wizard_store($state);

include/nc_connector_wizard_webdav_flow.inc.php

@@ -73,12 +73,17 @@ function bratonien_tools_nc_wizard_scan_webdav_first()
     'display_name'=>(string)($user_data['display-name'] ?? $user_data['displayname'] ?? ''),
     'version'=>(string)($status_data['versionstring'] ?? $status_data['version'] ?? ''),
     'product'=>(string)($status_data['productname'] ?? 'Nextcloud'),
+    'users'=>array(),
+    'can_list_users'=>false,
+    'showcase_user'=>$resolved_username,
     'connection_name'=>$url_host !== '' ? $url_host : 'Nextcloud WebDAV',
     'scan_message'=>'Nextcloud und WebDAV-Zugriff wurden bestätigt.',
     '_password'=>$password,
     'source_mode'=>'webdav-placeholder',
     'transport'=>'webdav',
     'gallery_root'=>rtrim(PHPWG_ROOT_PATH, '/').'/galleries',
+    'storages'=>array(),
+    'storage_candidates'=>array(),
     'roots'=>array(),
     'technical_stage'=>'mounts',
     'technical_source'=>'WebDAV',
@@ -92,6 +97,8 @@ function bratonien_tools_nc_wizard_scan_webdav_first()
     'directory_fileids'=>array(),
     'directory_selected'=>array(),
     'directory_selected_fileids'=>array(),
+    'database_prompted'=>false,
+    'mount_prompted'=>false,
     'api_status'=>'pending',
     'api_username'=>'',
     'api_error'=>'',
@@ -108,7 +115,7 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
   $state = bratonien_tools_nc_wizard_state();
   if ((string)($state['source_mode'] ?? '') !== 'webdav-placeholder')
   {
-    throw new RuntimeException('Der Assistent unterstützt ausschließlich WebDAV-Verbindungen.');
+    return bratonien_tools_nc_wizard_save_mounts_server_side();
   }
 
   if ((int)($state['step'] ?? 0) !== 2 || empty($state['directory_selection_ready']))
@@ -151,7 +158,7 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
   $state['directory_selection_ready'] = false;
   bratonien_tools_nc_wizard_store($state);
 
-  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen.');
+  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen. Die Verbindung ist für den parallelen Testweg vorbereitet.');
 }
 
 function bratonien_tools_nc_wizard_finish_dispatch()
@@ -159,7 +166,7 @@ function bratonien_tools_nc_wizard_finish_dispatch()
   $state = bratonien_tools_nc_wizard_state();
   if ((string)($state['source_mode'] ?? '') !== 'webdav-placeholder')
   {
-    throw new RuntimeException('Der Assistent unterstützt ausschließlich WebDAV-Verbindungen.');
+    return bratonien_tools_nc_wizard_finish_generic_scope();
   }
 
   if ((int)($state['step'] ?? 0) !== 4 || empty($state['technical_complete']))

include/nc_connector_ws.inc.php

@@ -0,0 +1,282 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+/**
+ * Registers the connector-owned filesystem synchronization endpoint.
+ *
+ * Authentication and authorization are delegated to Piwigo's Web API.
+ * The method is administrator-only and POST-only so an API key inherits the
+ * permissions of its Piwigo user without storing that user's password.
+ */
+function bratonien_tools_register_ws_methods($arr)
+{
+  $service = &$arr[0];
+
+  $service->addMethod(
+    'bratonien.nc.sync',
+    'bratonien_tools_ws_nc_sync',
+    array(
+      'site_id' => array(
+        'default' => 1,
+        'type' => WS_TYPE_ID,
+        'info' => 'Piwigo storage site to synchronize. Default: 1.',
+      ),
+      'simulate' => array(
+        'default' => true,
+        'type' => WS_TYPE_BOOL,
+        'info' => 'Simulation only. Productive API synchronization is disabled until parity has been verified.',
+      ),
+    ),
+    'Simulates the local Piwigo filesystem synchronization used by the Bratonien NC Connector.',
+    null,
+    array(
+      'admin_only' => true,
+      'post_only' => true,
+    )
+  );
+}
+
+function bratonien_tools_ws_nc_sync_error(&$errors, $path, $type)
+{
+  $errors[] = array(
+    'path' => (string)$path,
+    'type' => (string)$type,
+  );
+}
+
+/**
+ * Read-only parity test for Piwigo 16.4.0 admin/site_update.php with the
+ * connector's fixed settings:
+ *   sync=files, privacy_level=0, sync_meta=1, subcats-included=1,
+ *   no cat, no caddie, no meta_all, no meta_empty_overrides.
+ *
+ * The simulation deliberately performs no INSERT/UPDATE/DELETE and triggers
+ * no Piwigo activity/events. It only calculates what the matching core admin
+ * synchronization would attempt to change.
+ */
+function bratonien_tools_ws_nc_sync($params, &$service)
+{
+  global $conf, $user, $logger;
+
+  if (empty($conf['enable_synchronization']))
+  {
+    return new PwgError(403, 'Piwigo filesystem synchronization is disabled.');
+  }
+
+  $piwigo_version = defined('PHPWG_VERSION') ? (string)PHPWG_VERSION : '';
+  if ($piwigo_version !== '16.4.0')
+  {
+    return new PwgError(
+      409,
+      'Bratonien API synchronization is not approved for Piwigo '.$piwigo_version.'. Use the administrator fallback until this Piwigo version has been verified.'
+    );
+  }
+
+  $simulate = !isset($params['simulate']) || (bool)$params['simulate'];
+  if (!$simulate)
+  {
+    return new PwgError(
+      409,
+      'Productive Bratonien API synchronization is not enabled yet. Run the simulation and verify parity with Piwigo admin synchronization first.'
+    );
+  }
+
+  $site_id = isset($params['site_id']) ? (int)$params['site_id'] : 1;
+  if ($site_id < 1)
+  {
+    return new PwgError(400, 'Invalid site_id.');
+  }
+
+  include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
+  include_once(PHPWG_ROOT_PATH.'admin/site_reader_local.php');
+
+  $query = '
+SELECT galleries_url
+  FROM '.SITES_TABLE.'
+  WHERE id = '.$site_id.'
+  LIMIT 1';
+  $result = pwg_query($query);
+  if (!pwg_db_num_rows($result))
+  {
+    return new PwgError(404, 'Piwigo site does not exist.');
+  }
+
+  list($site_url) = pwg_db_fetch_row($result);
+  if (url_is_remote($site_url))
+  {
+    return new PwgError(400, 'Remote Piwigo sites are not supported by this synchronization method.');
+  }
+
+  $errors = array();
+  $site_reader = new LocalSiteReader($site_url);
+  if (!$site_reader->open())
+  {
+    return new PwgError(500, 'Piwigo could not open the configured local site.');
+  }
+
+  $counts = array(
+    'new_categories' => 0,
+    'del_categories' => 0,
+    'new_elements' => 0,
+    'del_elements' => 0,
+    'upd_elements' => 0,
+    'new_formats' => 0,
+    'del_formats' => 0,
+    'metadata_candidates' => 0,
+  );
+
+  // -------------------------------------------------------------------
+  // Directories / physical categories
+  // -------------------------------------------------------------------
+  $query = '
+SELECT id, uppercats, global_rank, status, visible
+  FROM '.CATEGORIES_TABLE.'
+  WHERE dir IS NOT NULL
+    AND site_id = '.$site_id;
+  $db_categories = hash_from_query($query, 'id');
+  $db_fulldirs = get_fulldirs(array_keys($db_categories));
+  $basedir = preg_replace('#/*$#', '', $site_url);
+  $db_fulldirs = array_flip($db_fulldirs);
+
+  $fs_fulldirs = $site_reader->get_full_directories($basedir);
+  $next_id = pwg_db_nextval('id', CATEGORIES_TABLE);
+
+  foreach (array_diff($fs_fulldirs, array_keys($db_fulldirs)) as $fulldir)
+  {
+    $dir = basename($fulldir);
+    if (!preg_match($conf['sync_chars_regex'], $dir))
+    {
+      bratonien_tools_ws_nc_sync_error($errors, $fulldir, 'PWG-UPDATE-1');
+      continue;
+    }
+
+    $virtual_id = $next_id++;
+    $db_fulldirs[$fulldir] = $virtual_id;
+    $db_categories[$virtual_id] = array('id'=>$virtual_id);
+    $counts['new_categories']++;
+  }
+
+  $to_delete = array();
+  foreach (array_diff(array_keys($db_fulldirs), $fs_fulldirs) as $fulldir)
+  {
+    $to_delete[] = $db_fulldirs[$fulldir];
+  }
+  $counts['del_categories'] = count($to_delete);
+
+  // -------------------------------------------------------------------
+  // Files / images / formats
+  // -------------------------------------------------------------------
+  $fs = $site_reader->get_elements($basedir);
+  $cat_ids = array_diff(array_keys($db_categories), $to_delete);
+  $db_elements = array();
+
+  if (count($cat_ids) > 0)
+  {
+    $query = '
+SELECT id, path
+  FROM '.IMAGES_TABLE.'
+  WHERE storage_category_id IN ('.wordwrap(implode(', ', $cat_ids), 160, "\n").')';
+    $db_elements = simple_hash_from_query($query, 'id', 'path');
+  }
+
+  foreach (array_diff(array_keys($fs), $db_elements) as $path)
+  {
+    $dirname = dirname($path);
+    if (!isset($db_fulldirs[$dirname]))
+    {
+      continue;
+    }
+
+    $filename = basename($path);
+    if (!preg_match($conf['sync_chars_regex'], $filename))
+    {
+      bratonien_tools_ws_nc_sync_error($errors, $path, 'PWG-UPDATE-1');
+      continue;
+    }
+
+    $counts['new_elements']++;
+    if (!empty($conf['enable_formats']) && isset($fs[$path]['formats']) && is_array($fs[$path]['formats']))
+    {
+      $counts['new_formats'] += count($fs[$path]['formats']);
+    }
+  }
+
+  if (!empty($conf['enable_formats']) && count($db_elements) > 0)
+  {
+    $db_elements_flip = array_flip($db_elements);
+    $existing_ids = array();
+    foreach (array_intersect_key($fs, $db_elements_flip) as $path => $unused)
+    {
+      $existing_ids[] = $db_elements_flip[$path];
+    }
+
+    if (count($existing_ids) > 0)
+    {
+      $db_formats = array();
+      $query = '
+SELECT *
+  FROM '.IMAGE_FORMAT_TABLE.'
+  WHERE image_id IN ('.implode(',', $existing_ids).')';
+      $result = pwg_query($query);
+      while ($row = pwg_db_fetch_assoc($result))
+      {
+        if (!isset($db_formats[$row['image_id']]))
+        {
+          $db_formats[$row['image_id']] = array();
+        }
+        $db_formats[$row['image_id']][$row['ext']] = $row['format_id'];
+      }
+
+      foreach ($db_formats as $image_id => $formats)
+      {
+        $path = $db_elements[$image_id];
+        $filesystem_formats = isset($fs[$path]['formats']) && is_array($fs[$path]['formats']) ? $fs[$path]['formats'] : array();
+        $counts['del_formats'] += count(array_diff_key($formats, $filesystem_formats));
+      }
+
+      foreach ($existing_ids as $image_id)
+      {
+        $path = $db_elements[$image_id];
+        $known_formats = isset($db_formats[$image_id]) ? $db_formats[$image_id] : array();
+        $filesystem_formats = isset($fs[$path]['formats']) && is_array($fs[$path]['formats']) ? $fs[$path]['formats'] : array();
+        $counts['new_formats'] += count(array_diff_key($filesystem_formats, $known_formats));
+      }
+    }
+  }
+
+  $counts['del_elements'] = count(array_diff($db_elements, array_keys($fs)));
+
+  $files = get_filelist('', $site_id, true, false);
+  $update_count = 0;
+  foreach ($files as $id => $file)
+  {
+    $data = $site_reader->get_element_update_attributes($file['path']);
+    if (is_array($data))
+    {
+      $update_count++;
+    }
+  }
+  $counts['upd_elements'] = $update_count;
+
+  $metadata_files = get_filelist('', $site_id, true, true);
+  $counts['metadata_candidates'] = count($metadata_files);
+
+  return array(
+    'mode' => 'simulation',
+    'approved_piwigo_version' => '16.4.0',
+    'piwigo_version' => $piwigo_version,
+    'site_id' => $site_id,
+    'site_url' => $site_url,
+    'counts' => $counts,
+    'errors' => $errors,
+    'error_count' => count($errors),
+    'database_writes' => false,
+    'fallback' => 'administrator',
+    'connected_with' => isset($_SESSION['connected_with']) ? (string)$_SESSION['connected_with'] : '',
+    'username' => isset($user['username']) ? (string)$user['username'] : '',
+    'status' => isset($user['status']) ? (string)$user['status'] : '',
+  );
+}

include/tool_registry.inc.php

@@ -4,6 +4,16 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
+if (isset($GLOBALS['template']) && is_object($GLOBALS['template']) && method_exists($GLOBALS['template'], 'func_combine_script'))
+{
+  $GLOBALS['template']->func_combine_script(array(
+    'id'=>'bratonien_nc_connector_edit_v2',
+    'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_edit_v2.js',
+    'load'=>'footer',
+    'version'=>function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.6.10',
+  ));
+}
+
 require_once(BRATONIEN_TOOLS_PATH . 'tools/image_cache.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'tools/watermark.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'tools/watermark_profiles.inc.php');
@@ -16,13 +26,21 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/self_update.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/album_shares.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/album_lock.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_manage.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_takeover.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_auth.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_create_api.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_piwigo_api.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_db_bridge.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_user_scope.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_flow.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_connection_scope.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_generic_scope.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_delete_safe.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_webdav.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_webdav_flow.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_edit.inc.php');
 
 function bratonien_tools_get_tools()
 {
@@ -47,10 +65,16 @@ function bratonien_tools_get_tools()
     'album_share_create' => array('handler' => 'bratonien_tools_create_album_share'),
     'album_share_regenerate_link' => array('handler' => 'bratonien_tools_regenerate_album_share_link'),
     'album_share_revoke' => array('handler' => 'bratonien_tools_revoke_album_share'),
+    'nc_connector_create_local' => array('handler' => 'bratonien_tools_nc_connector_create_local_api_first'),
     'nc_connector_create_webdav_parallel' => array('handler' => 'bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard'),
+    'nc_connector_edit_start' => array('handler' => 'bratonien_tools_nc_connector_edit_start'),
+    'nc_connector_migrate_start' => array('handler' => 'bratonien_tools_nc_connector_migrate_start'),
+    'nc_connector_update_local' => array('handler' => 'bratonien_tools_nc_connector_update_local_friendly'),
     'nc_connector_delete' => array('handler' => 'bratonien_tools_nc_connector_delete_safe'),
     'nc_connector_update_name' => array('handler' => 'bratonien_tools_nc_connector_update_name'),
+    'nc_connector_update_technical' => array('handler' => 'bratonien_tools_nc_connector_update_technical'),
     'nc_connector_wizard_scan' => array('handler' => 'bratonien_tools_nc_wizard_scan_webdav_first'),
+    'nc_connector_wizard_save_technical' => array('handler' => 'bratonien_tools_nc_wizard_save_technical_flow'),
     'nc_connector_wizard_directory_browse' => array('handler' => 'bratonien_tools_nc_wizard_directory_browse'),
     'nc_connector_wizard_directory_add' => array('handler' => 'bratonien_tools_nc_wizard_directory_add'),
     'nc_connector_wizard_directory_remove' => array('handler' => 'bratonien_tools_nc_wizard_directory_remove'),
@@ -61,8 +85,15 @@ function bratonien_tools_get_tools()
     'nc_connector_wizard_finish' => array('handler' => 'bratonien_tools_nc_wizard_finish_dispatch'),
     'nc_connector_wizard_back' => array('handler' => 'bratonien_tools_nc_wizard_back'),
     'nc_connector_wizard_reset' => array('handler' => 'bratonien_tools_nc_wizard_reset'),
+    'nc_connector_import_legacy' => array('handler' => 'bratonien_tools_nc_connector_import_legacy'),
+    'nc_connector_verify' => array('handler' => 'bratonien_tools_nc_connector_verify_connection_scoped'),
+    'nc_connector_prepare_takeover' => array('handler' => 'bratonien_tools_nc_connector_prepare_takeover'),
+    'nc_connector_cancel_takeover' => array('handler' => 'bratonien_tools_nc_connector_cancel_takeover'),
+    'nc_connector_piwigo_api_test' => array('handler' => 'bratonien_tools_nc_connector_piwigo_api_test'),
+    'nc_connector_piwigo_api_delete' => array('handler' => 'bratonien_tools_nc_connector_api_delete'),
     'nc_connector_fallback_save' => array('handler' => 'bratonien_tools_nc_connector_fallback_save_scoped'),
     'nc_connector_fallback_delete' => array('handler' => 'bratonien_tools_nc_connector_fallback_delete_scoped'),
+    'nc_connector_fallback_once' => array('handler' => 'bratonien_tools_nc_connector_fallback_once'),
     'self_update_check' => array('handler' => 'bratonien_tools_self_update_check'),
     'self_update_run' => array('handler' => 'bratonien_tools_self_update_run'),
   );

js/admin_tabs.js

@@ -1,6 +1,94 @@
 (function () {
   'use strict';
 
+  function initNcRouteStatus() {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    var statusCard = section.querySelector('.bratonien-grid .bratonien-card');
+    if (!statusCard) return;
+
+    var grid = statusCard.querySelector('.bratonien-form-grid');
+    if (!grid) return;
+
+    var routeLabel = document.createElement('span');
+    routeLabel.className = 'bratonien-label';
+    routeLabel.textContent = 'Aktiver Datenweg';
+
+    var routeValue = document.createElement('strong');
+    routeValue.setAttribute('data-nc-route-status', '');
+    routeValue.textContent = 'Noch kein Lauf erfasst';
+
+    var routeTimeLabel = document.createElement('span');
+    routeTimeLabel.className = 'bratonien-label';
+    routeTimeLabel.textContent = 'Datenweg zuletzt';
+
+    var routeTimeValue = document.createElement('strong');
+    routeTimeValue.setAttribute('data-nc-route-time', '');
+    routeTimeValue.textContent = 'Nicht verfügbar';
+
+    grid.appendChild(routeLabel);
+    grid.appendChild(routeValue);
+    grid.appendChild(routeTimeLabel);
+    grid.appendChild(routeTimeValue);
+
+    var detail = document.createElement('p');
+    detail.className = 'bratonien-base-note';
+    detail.setAttribute('data-nc-route-detail', '');
+    detail.textContent = 'Der Datenweg wird nach dem nächsten Connector-Lauf angezeigt.';
+    statusCard.appendChild(detail);
+
+    var basePath = window.location.pathname.replace(/admin\.php.*$/, '');
+    var statusUrl = basePath + '_data/bratonien-tools/nc-connector-status/route-status.json';
+
+    function formatTime(timestamp) {
+      if (!timestamp) return 'Nicht verfügbar';
+      var date = new Date(Number(timestamp) * 1000);
+      if (Number.isNaN(date.getTime())) return 'Nicht verfügbar';
+      return date.toLocaleString('de-DE');
+    }
+
+    function render(data) {
+      var label = data && data.label ? String(data.label) : 'Unbekannt';
+      var route = data && data.route ? String(data.route) : '';
+      routeValue.textContent = label;
+      routeTimeValue.textContent = formatTime(data && data.timestamp);
+
+      if (route === 'webdav') {
+        routeValue.textContent = 'WEBDAV PRIMÄR';
+        detail.textContent = 'Portierung läuft über WebDAV. Legacy wurde in diesem Lauf nicht benutzt.';
+      } else if (route === 'legacy_fallback') {
+        routeValue.textContent = 'LEGACY-FALLBACK AKTIV';
+        detail.textContent = 'WebDAV war nicht erfolgreich. Dieser Lauf wurde über die alte Struktur abgefangen.';
+      } else if (route === 'failed') {
+        routeValue.textContent = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
+        detail.textContent = data && data.detail ? String(data.detail) : 'WebDAV und Fallback sind fehlgeschlagen.';
+      } else {
+        detail.textContent = data && data.detail ? String(data.detail) : 'Unbekannter Datenweg.';
+      }
+    }
+
+    function refresh() {
+      fetch(statusUrl + '?t=' + Date.now(), {
+        cache: 'no-store',
+        credentials: 'same-origin'
+      })
+        .then(function (response) {
+          if (!response.ok) throw new Error('status unavailable');
+          return response.json();
+        })
+        .then(render)
+        .catch(function () {
+          routeValue.textContent = 'Noch kein Lauf erfasst';
+          routeTimeValue.textContent = 'Nicht verfügbar';
+          detail.textContent = 'Nach dem nächsten Connector-Lauf wird hier WebDAV oder Legacy-Fallback angezeigt.';
+        });
+    }
+
+    refresh();
+    window.setInterval(refresh, 10000);
+  }
+
   function initBratonienTabs() {
     var admin = document.querySelector('.bratonien-admin');
     if (!admin) return;
@@ -113,9 +201,14 @@
     activate(initial, false);
   }
 
-  if (document.readyState === 'loading') {
-    document.addEventListener('DOMContentLoaded', initBratonienTabs);
-  } else {
+  function init() {
     initBratonienTabs();
+    initNcRouteStatus();
+  }
+
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', init);
+  } else {
+    init();
   }
 })();

js/nc_connector_edit_v2.js

@@ -0,0 +1,324 @@
+(function () {
+  'use strict';
+
+  function ready(callback) {
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', function () { window.setTimeout(callback, 0); });
+    } else {
+      window.setTimeout(callback, 0);
+    }
+  }
+
+  ready(function () {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    var pwgTokenInput = section.querySelector('input[name="pwg_token"]');
+    var pwgToken = pwgTokenInput ? pwgTokenInput.value : '';
+    var modeKey = 'bratonienNcWizardMode';
+
+    function escapeHtml(value) {
+      return String(value == null ? '' : value).replace(/[&<>"']/g, function (c) {
+        return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot',"'":'&#039;'}[c];
+      });
+    }
+
+    function setMode(value) {
+      try { sessionStorage.setItem(modeKey, value); } catch (e) {}
+    }
+
+    function postForm(label, tool, id, mode) {
+      var form = document.createElement('form');
+      form.method = 'post';
+      form.style.display = 'inline';
+      form.dataset.ncV2Action = tool;
+      form.innerHTML = '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+        + '<input type="hidden" name="connection_id" value="'+escapeHtml(id)+'">'
+        + '<button class="buttonLike" type="submit" name="bratonien_tool" value="'+escapeHtml(tool)+'">'+escapeHtml(label)+'</button>';
+      if (mode) form.addEventListener('submit', function () { setMode(mode); }, true);
+      return form;
+    }
+
+    function loadConnection(id) {
+      return fetch('plugins/bratonien_tools/nc-connector-edit-data.php?connection_id='+encodeURIComponent(id)+'&_='+Date.now(), {
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'}
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok) throw new Error(data.error || ('HTTP '+response.status));
+          return data;
+        });
+      });
+    }
+
+    function dialog() {
+      var node = document.getElementById('bratonien-nc-connection-edit-v2');
+      if (node) return node;
+      node = document.createElement('dialog');
+      node.id = 'bratonien-nc-connection-edit-v2';
+      node.className = 'bratonien-edit-dialog';
+      node.innerHTML = '<div class="bratonien-edit-dialog__body">'
+        + '<div style="display:flex;align-items:flex-start;justify-content:space-between;gap:1rem">'
+        + '<div><h4 style="margin:0">Verbindung bearbeiten</h4><p class="bratonien-base-note" style="margin:.35rem 0 0">Alle Daten dieser Verbindung werden hier gepflegt. Eine Migration ist ein eigener Vorgang.</p></div>'
+        + '<button type="button" class="buttonLike" data-edit-v2-close>Schließen</button></div>'
+        + '<div data-edit-v2-content style="margin-top:1rem"></div></div>';
+      document.body.appendChild(node);
+      node.querySelector('[data-edit-v2-close]').addEventListener('click', function () { node.close(); });
+      node.addEventListener('click', function (event) { if (event.target === node) node.close(); });
+      return node;
+    }
+
+    function storageRow(storage) {
+      storage = storage || {};
+      return '<div class="bratonien-storage-row" data-storage-row>'
+        + '<label>Storage-ID<input name="nc_storage_id[]" value="'+escapeHtml(storage.storage_id || '')+'" required></label>'
+        + '<label>Quellordner<input name="nc_source_prefix[]" value="'+escapeHtml(storage.source_prefix || '')+'" placeholder="optional"></label>'
+        + '<label>Lokaler Speicherpfad<input name="nc_local_mount[]" value="'+escapeHtml(storage.local_mount || '')+'" required></label>'
+        + '<button type="button" class="buttonLike" data-remove-storage>Entfernen</button></div>';
+    }
+
+    function clearValidation(form) {
+      [].slice.call(form.querySelectorAll('[aria-invalid="true"]')).forEach(function (field) {
+        field.removeAttribute('aria-invalid');
+        field.style.borderColor = '';
+        field.style.boxShadow = '';
+      });
+      [].slice.call(form.querySelectorAll('[data-edit-v2-field-error]')).forEach(function (node) { node.remove(); });
+      var box = form.querySelector('[data-edit-v2-error-summary]');
+      if (box) box.remove();
+    }
+
+    function fieldNodes(form, fieldName) {
+      return [].slice.call(form.querySelectorAll('[name="'+fieldName.replace(/"/g, '\\"')+'"]'));
+    }
+
+    function showValidation(form, data) {
+      clearValidation(form);
+      var message = (data && data.message) ? data.message : 'Die Verbindung konnte nicht gespeichert werden.';
+      var summary = document.createElement('div');
+      summary.dataset.editV2ErrorSummary = '1';
+      summary.className = 'bratonien-main-cache__warning';
+      summary.style.margin = '0 0 1rem';
+      summary.style.padding = '.75rem';
+      summary.style.border = '1px solid currentColor';
+      summary.innerHTML = '<strong>Speichern fehlgeschlagen:</strong> '+escapeHtml(message);
+      form.insertBefore(summary, form.firstChild);
+
+      var first = null;
+      var fields = data && Array.isArray(data.fields) ? data.fields : [];
+      fields.forEach(function (fieldName) {
+        fieldNodes(form, fieldName).forEach(function (field) {
+          field.setAttribute('aria-invalid', 'true');
+          field.style.borderColor = '#d65a5a';
+          field.style.boxShadow = '0 0 0 1px #d65a5a';
+          if (!first) first = field;
+          var note = document.createElement('span');
+          note.dataset.editV2FieldError = '1';
+          note.className = 'bratonien-main-cache__warning';
+          note.style.display = 'block';
+          note.style.marginTop = '.25rem';
+          note.textContent = message;
+          field.insertAdjacentElement('afterend', note);
+        });
+      });
+
+      if (first) {
+        first.scrollIntoView({block:'center', behavior:'smooth'});
+        window.setTimeout(function () { first.focus(); }, 150);
+      } else {
+        summary.scrollIntoView({block:'center', behavior:'smooth'});
+      }
+    }
+
+    function submitEditor(form, editDialog) {
+      clearValidation(form);
+      if (!form.reportValidity()) return;
+
+      var submit = form.querySelector('button[type="submit"]');
+      if (submit) submit.disabled = true;
+
+      var body = new FormData(form);
+      fetch('plugins/bratonien_tools/nc-connector-edit-save.php', {
+        method:'POST',
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'},
+        body:body
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok || !data.ok) {
+            showValidation(form, data);
+            return;
+          }
+          editDialog.close();
+          window.location.reload();
+        });
+      }).catch(function (error) {
+        showValidation(form, {message:error.message || String(error), fields:[]});
+      }).finally(function () {
+        if (submit) submit.disabled = false;
+      });
+    }
+
+    function openEditor(id) {
+      var editDialog = dialog();
+      var content = editDialog.querySelector('[data-edit-v2-content]');
+      content.innerHTML = '<p class="bratonien-base-note">Verbindung wird geladen …</p>';
+      if (typeof editDialog.showModal === 'function') editDialog.showModal();
+      else editDialog.setAttribute('open', 'open');
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter !== 'local') throw new Error('Diese Ansicht ist nur für die bestehende Legacy-Verbindung vorgesehen.');
+        var legacy = data.legacy || {};
+        var webdav = data.webdav || {};
+        var storages = Array.isArray(legacy.storages) ? legacy.storages : [];
+        var rows = storages.map(storageRow).join('') || storageRow({});
+        var migrationText = webdav.migration_ready
+          ? '<strong>Bereit.</strong> Nextcloud-Zugang und verbindungseigener Piwigo-API-Key sind vollständig gespeichert.'
+          : '<strong>Noch nicht bereit.</strong> Es fehlen: '+escapeHtml((webdav.migration_missing || []).join(', ') || 'WebDAV-Zugangsdaten')+'.';
+
+        content.innerHTML = '<form method="post" data-edit-v2-form>'
+          + '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+          + '<input type="hidden" name="connection_id" value="'+escapeHtml(data.id)+'">'
+          + '<h5>Verbindung</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Name</label><input name="connection_name" value="'+escapeHtml(data.name)+'" required>'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Nextcloud / WebDAV</h5>'
+          + '<p class="bratonien-base-note">Diese Angaben werden für den neuen WebDAV-Weg benötigt und gehören zu genau dieser Verbindung.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Nextcloud-Adresse</label><input name="nc_nextcloud_url" value="'+escapeHtml(webdav.nextcloud_url || '')+'" placeholder="https://cloud.example.de">'
+          + '<label class="bratonien-label">Nextcloud-Benutzer</label><input name="nc_nextcloud_user" value="'+escapeHtml(webdav.nextcloud_user || '')+'" autocomplete="username">'
+          + '<label class="bratonien-label">Nextcloud-Passwort</label><input name="nc_nextcloud_password" type="password" autocomplete="current-password" placeholder="'+(webdav.has_nextcloud_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Piwigo API dieser Verbindung</h5>'
+          + '<p class="bratonien-base-note">Der API-Key wird verbindungseigen gespeichert und beim Speichern geprüft.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">API-Schlüssel-ID</label><input name="nc_connection_api_key_id" value="'+escapeHtml(webdav.api_key_id || '')+'" autocomplete="off">'
+          + '<label class="bratonien-label">API-Geheimnis</label><input name="nc_connection_api_key_secret" type="password" autocomplete="new-password" placeholder="'+(webdav.has_api_key_secret ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<p class="bratonien-base-note"><strong>WebDAV-Migration:</strong> '+migrationText+'</p>'
+          + '<h5 style="margin-top:1.2rem">Bestehender Legacy-Weg</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Datenbank-Server</label><input name="nc_host" value="'+escapeHtml(legacy.host)+'" required>'
+          + '<label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="'+escapeHtml(legacy.port || 5432)+'" required>'
+          + '<label class="bratonien-label">Datenbank</label><input name="nc_database" value="'+escapeHtml(legacy.database)+'" required>'
+          + '<label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" value="'+escapeHtml(legacy.user)+'" required>'
+          + '<label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" placeholder="'+(legacy.has_db_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Speicherorte</h5><div data-storage-list>'+rows+'</div>'
+          + '<button type="button" class="buttonLike" data-add-storage>Speicherort hinzufügen</button>'
+          + '<details style="margin-top:1rem"><summary>Erweiterte Legacy-Einstellungen</summary><div class="bratonien-form-grid" style="margin-top:.75rem">'
+          + '<label class="bratonien-label">Source-View</label><input name="nc_source_view" value="'+escapeHtml(legacy.source_view)+'" required>'
+          + '<label class="bratonien-label">Activity-View</label><input name="nc_activity_view" value="'+escapeHtml(legacy.activity_view)+'" required>'
+          + '<label class="bratonien-label">Piwigo-Galerieordner</label><input name="nc_gallery_root" value="'+escapeHtml(legacy.gallery_root)+'" required>'
+          + '<label class="bratonien-label">Ruhezeit (Sek.)</label><input name="nc_quiet_seconds" type="number" min="0" value="'+escapeHtml(legacy.quiet_seconds)+'">'
+          + '<label class="bratonien-label">Maximale Wartezeit (Sek.)</label><input name="nc_max_wait_seconds" type="number" min="60" value="'+escapeHtml(legacy.max_wait_seconds)+'">'
+          + '<label class="bratonien-label">Vollprüfung nach (Sek.)</label><input name="nc_full_sync_seconds" type="number" min="300" value="'+escapeHtml(legacy.full_sync_seconds)+'">'
+          + '</div></details>'
+          + '<div class="bratonien-actions" style="margin-top:1rem"><button class="buttonLike" type="submit">Änderungen prüfen und speichern</button><button class="buttonLike" type="button" data-edit-v2-cancel>Abbrechen</button></div>'
+          + '</form>';
+
+        var form = content.querySelector('[data-edit-v2-form]');
+        form.querySelector('[data-edit-v2-cancel]').addEventListener('click', function () { editDialog.close(); });
+        form.querySelector('[data-add-storage]').addEventListener('click', function () {
+          form.querySelector('[data-storage-list]').insertAdjacentHTML('beforeend', storageRow({}));
+        });
+        form.addEventListener('click', function (event) {
+          var remove = event.target.closest('[data-remove-storage]');
+          if (!remove) return;
+          var row = remove.closest('[data-storage-row]');
+          if (row) row.remove();
+        });
+        form.addEventListener('submit', function (event) {
+          event.preventDefault();
+          event.stopPropagation();
+          submitEditor(form, editDialog);
+        });
+      }).catch(function (error) {
+        content.innerHTML = '<p class="bratonien-main-cache__warning"><strong>Bearbeiten nicht möglich:</strong> '+escapeHtml(error.message || String(error))+'</p>';
+      });
+    }
+
+    function rebuildLocalActions(deleteForm, id, connectionData) {
+      var actions = deleteForm.parentElement;
+      if (!actions) return;
+
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var migrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        var editStart = form.querySelector('button[value="nc_connector_edit_start"]');
+        if (migrate || editStart) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });
+
+      var edit = document.createElement('button');
+      edit.type = 'button';
+      edit.className = 'buttonLike';
+      edit.textContent = 'Bearbeiten';
+      edit.addEventListener('click', function () { openEditor(id); });
+      actions.insertBefore(edit, deleteForm);
+
+      var info = document.createElement('span');
+      info.dataset.ncMigrationInfo = '1';
+      info.className = 'bratonien-base-note';
+      info.textContent = 'WebDAV-Migration wird geprüft …';
+      actions.insertBefore(info, deleteForm);
+
+      var dataPromise = connectionData ? Promise.resolve(connectionData) : loadConnection(id);
+      dataPromise.then(function (data) {
+        var webdav = data.webdav || {};
+        if (webdav.migration_ready) {
+          info.remove();
+          actions.insertBefore(postForm('Auf WebDAV migrieren', 'nc_connector_migrate_start', id, 'migrate'), deleteForm);
+        } else {
+          var missing = (webdav.migration_missing || []).join(', ');
+          info.textContent = 'WebDAV-Migration noch nicht bereit: '+(missing || 'Zugangsdaten fehlen')+'. Zuerst „Bearbeiten“.';
+        }
+      }).catch(function (error) {
+        info.textContent = 'WebDAV-Migration kann nicht geprüft werden: '+(error.message || String(error));
+      });
+    }
+
+    function rebuildRemoteActions(deleteForm, id) {
+      var actions = deleteForm.parentElement;
+      if (!actions) return;
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var oldEdit = form.querySelector('button[value="nc_connector_edit_start"]');
+        var oldMigrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        if (oldEdit || oldMigrate) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });
+      actions.insertBefore(postForm('Bearbeiten', 'nc_connector_edit_start', id, 'edit'), deleteForm);
+    }
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_edit_start"]')).forEach(function (button) {
+      var form = button.closest('form');
+      if (form) form.remove();
+    });
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_delete"]')).forEach(function (deleteButton) {
+      var deleteForm = deleteButton.closest('form');
+      if (!deleteForm) return;
+      var idInput = deleteForm.querySelector('input[name="connection_id"]');
+      if (!idInput) return;
+      var id = idInput.value;
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter === 'local') rebuildLocalActions(deleteForm, id, data);
+        else rebuildRemoteActions(deleteForm, id);
+      }).catch(function (error) {
+        var actions = deleteForm.parentElement;
+        if (!actions) return;
+        var info = document.createElement('span');
+        info.className = 'bratonien-main-cache__warning';
+        info.textContent = 'Verbindungstyp konnte nicht geladen werden: '+(error.message || String(error));
+        actions.insertBefore(info, deleteForm);
+      });
+    });
+  });
+})();

main.inc.php

@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.6.3
+Version: 0.9.6.14
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
@@ -21,6 +21,7 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/public_selection.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/picture_navigation.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/batch_titles.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/album_shares.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_orphan_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_productive_ws.inc.php');
 
@@ -35,6 +36,7 @@ add_event_handler('init', 'bratonien_tools_prepare_private_album_permissions', E
 add_event_handler('init', 'bratonien_tools_preserve_private_album_access', EVENT_HANDLER_PRIORITY_NEUTRAL - 10);
 add_event_handler('init', 'bratonien_tools_album_shares_init');
 add_event_handler('delete_categories', 'bratonien_tools_album_shares_on_delete_categories');
+add_event_handler('ws_add_methods', 'bratonien_tools_register_ws_methods');
 add_event_handler('ws_add_methods', 'bratonien_tools_register_nc_orphan_ws_methods');
 add_event_handler('ws_add_methods', 'bratonien_tools_register_nc_productive_ws_methods');
 

nc-connector-cutover-v2.php

@@ -0,0 +1,284 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-cutover-v2.php <connection-id>\n");
+  exit(1);
+}
+
+$connectionId = (int)$argv[1];
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$legacyConfig = '/etc/piwigo-sync/piwigo.conf';
+$legacyRuntime = '/opt/piwigo-sync/sync.sh';
+$newTimer = 'bratonien-nc-connector.timer';
+$newService = 'bratonien-nc-connector.service';
+$legacyTimer = 'piwigo-sync.timer';
+
+function fail($message)
+{
+  throw new RuntimeException($message);
+}
+
+function readKeyValueFile($path)
+{
+  if (!is_readable($path)) fail('Konfiguration nicht lesbar: '.$path);
+  $result = array();
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#') continue;
+    if (!preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches)) continue;
+    $value = trim($matches[2]);
+    if (strlen($value) >= 2)
+    {
+      $first = $value[0]; $last = $value[strlen($value)-1];
+      if (($first === '"' && $last === '"') || ($first === "'" && $last === "'")) $value = substr($value, 1, -1);
+    }
+    $result[$matches[1]] = $value;
+  }
+  return $result;
+}
+
+function runCommand(array $command, $allowFailure = false)
+{
+  $spec = array(0=>array('file','/dev/null','r'),1=>array('pipe','w'),2=>array('pipe','w'));
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process)) fail('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  $stdout = stream_get_contents($pipes[1]); $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]); fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    fail('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit,'stdout'=>(string)$stdout,'stderr'=>(string)$stderr);
+}
+
+function decryptConnectorSecret($blob, $hexKey)
+{
+  if (!preg_match('/^[a-f0-9]{64}$/', $hexKey)) fail('Connector-Schluessel ist ungueltig.');
+  $outer = base64_decode(trim((string)$blob), true);
+  $payload = is_string($outer) ? json_decode($outer, true) : null;
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) fail('Connector-Zugangsdaten haben ein unbekanntes Format.');
+  $iv = base64_decode((string)($payload['iv'] ?? ''), true);
+  $tag = base64_decode((string)($payload['tag'] ?? ''), true);
+  $cipher = base64_decode((string)($payload['data'] ?? ''), true);
+  $plain = openssl_decrypt($cipher, 'aes-256-gcm', hex2bin($hexKey), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($plain === false || $plain === '') fail('Connector-Zugangsdaten konnten nicht entschluesselt werden.');
+
+  $decoded = json_decode($plain, true);
+  if (is_array($decoded) && array_key_exists('db_password', $decoded))
+  {
+    $password = (string)$decoded['db_password'];
+    if ($password === '') fail('Datenbankpasswort fehlt in den Connector-Zugangsdaten.');
+    return $password;
+  }
+
+  // Backward compatibility for older imported connections that stored only
+  // the database password as plaintext inside the encrypted envelope.
+  return (string)$plain;
+}
+
+function sqlEscape(mysqli $db, $value)
+{
+  return $db->real_escape_string((string)$value);
+}
+
+function saveTakeoverResult(mysqli $db, $table, $connectionId, array $config, $state, $enabled)
+{
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($json)) fail('Connector-Status konnte nicht serialisiert werden.');
+  $now = date('Y-m-d H:i:s');
+  $sql = "UPDATE `".$table."` SET takeover_state='".sqlEscape($db, $state)."', enabled=".($enabled ? 1 : 0).", config_json='".sqlEscape($db, $json)."', updated='".sqlEscape($db, $now)."' WHERE id=".(int)$connectionId;
+  if (!$db->query($sql)) fail('Connector-Status konnte nicht gespeichert werden: '.$db->error);
+}
+
+$legacyTimerWasEnabled = false;
+$newTimerInstalled = false;
+$db = null;
+$table = '';
+$config = array();
+
+try
+{
+  if (!is_readable($dbConfig)) fail('Piwigo-Datenbankkonfiguration nicht lesbar: '.$dbConfig);
+  if (!is_executable($legacyRuntime)) fail('Bestehende Sync-Runtime fehlt: '.$legacyRuntime);
+
+  $conf = array(); $prefixeTable = 'piwigo_'; require $dbConfig;
+  foreach (array('db_host','db_user','db_password','db_base') as $key) if (!isset($conf[$key])) fail('Piwigo-Datenbankkonfiguration enthaelt '.$key.' nicht.');
+
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno) fail('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  $db->set_charset('utf8mb4');
+
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT id, takeover_state, enabled, config_json, secret_blob FROM `".$table."` WHERE id=".$connectionId." LIMIT 1");
+  if (!$result || !$result->num_rows) fail('Connector-Verbindung #'.$connectionId.' wurde nicht gefunden.');
+  $row = $result->fetch_assoc();
+  if ((string)$row['takeover_state'] !== 'ready' || (int)$row['enabled'] !== 0) fail('Connector-Verbindung muss im Zustand ready und deaktiviert sein.');
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config) || empty($config['verification']['ok'])) fail('Connector-Verbindung besitzt keine erfolgreiche Verifikation.');
+
+  $keyResult = $db->query("SELECT value FROM `".$prefixeTable."config` WHERE param='bratonien_nc_connector_secret' LIMIT 1");
+  if (!$keyResult || !$keyResult->num_rows) fail('Connector-Schluessel wurde in Piwigo nicht gefunden.');
+  $keyRow = $keyResult->fetch_assoc();
+  $dbPassword = decryptConnectorSecret($row['secret_blob'], (string)$keyRow['value']);
+
+  $legacy = readKeyValueFile($legacyConfig);
+  $piwigoUser = trim((string)($legacy['PIWIGO_SYNC_USER'] ?? ''));
+  $piwigoPasswordFile = trim((string)($legacy['PIWIGO_SYNC_PASSWORD_FILE'] ?? '/etc/piwigo-sync/piwigo-password'));
+  if ($piwigoUser === '' || !is_readable($piwigoPasswordFile)) fail('Legacy-Piwigo-Sync-Zugangsdaten konnten fuer den einmaligen Cutover nicht gelesen werden.');
+  $piwigoPassword = trim((string)file_get_contents($piwigoPasswordFile));
+  if ($piwigoPassword === '') fail('Legacy-Piwigo-Sync-Passwort ist leer.');
+
+  foreach (array('host','port','database','user','source_view','gallery_root','state_dir') as $key)
+  {
+    if (!isset($config[$key]) || trim((string)$config[$key]) === '') fail('Connector-Konfiguration ist unvollstaendig: '.$key.' fehlt.');
+  }
+
+  $runtimeDir = '/etc/bratonien-tools/nc-connector';
+  if (!is_dir($runtimeDir) && !mkdir($runtimeDir, 0700, true)) fail('Connector-Laufzeitverzeichnis konnte nicht angelegt werden.');
+  chmod($runtimeDir, 0700);
+
+  $base = $runtimeDir.'/connection-'.$connectionId;
+  $dbPasswordPath = $base.'.db-password';
+  $piwigoPasswordPath = $base.'.piwigo-password';
+  $storagePath = $base.'.storages.tsv';
+  $configPath = $base.'.conf';
+  $statusPath = rtrim((string)$config['state_dir'], '/').'/connector-status.json';
+
+  file_put_contents($dbPasswordPath, $dbPassword."\n", LOCK_EX);
+  file_put_contents($piwigoPasswordPath, $piwigoPassword."\n", LOCK_EX);
+  chmod($dbPasswordPath, 0600); chmod($piwigoPasswordPath, 0600);
+
+  $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount');
+  foreach ((array)($config['storages'] ?? array()) as $storage)
+  {
+    $storageLines[] = (string)($storage['storage_id'] ?? '')."\t".trim((string)($storage['source_prefix'] ?? ''), '/')."\t".(string)($storage['local_mount'] ?? '');
+  }
+  file_put_contents($storagePath, implode("\n", $storageLines)."\n", LOCK_EX); chmod($storagePath, 0600);
+
+  $piwigoRootConfigured = isset($legacy['PIWIGO_ROOT']) && trim((string)$legacy['PIWIGO_ROOT']) !== '' ? trim((string)$legacy['PIWIGO_ROOT']) : $piwigoRoot;
+  $lines = array(
+    'PIWIGO_ROOT='.$piwigoRootConfigured,
+    'GALLERY_ROOT='.(string)$config['gallery_root'],
+    'STATE_DIR='.(string)$config['state_dir'],
+    'STATUS_FILE='.$statusPath,
+    'NC_DB_HOST='.(string)$config['host'],
+    'NC_DB_PORT='.(string)$config['port'],
+    'NC_DB_NAME='.(string)$config['database'],
+    'NC_DB_USER='.(string)$config['user'],
+    'NC_DB_VIEW='.(string)$config['source_view'],
+    'NC_DB_PASSWORD_FILE='.$dbPasswordPath,
+    'STORAGE_CONFIG='.$storagePath,
+    'QUIET_SECONDS='.(int)($config['quiet_seconds'] ?? 120),
+    'MAX_WAIT_SECONDS='.(int)($config['max_wait_seconds'] ?? 900),
+    'FULL_SYNC_SECONDS='.(int)($config['full_sync_seconds'] ?? 86400),
+    'PIWIGO_SYNC_ENABLED=1',
+    'PIWIGO_SYNC_USER='.$piwigoUser,
+    'PIWIGO_SYNC_PASSWORD_FILE='.$piwigoPasswordPath,
+  );
+  file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX); chmod($configPath, 0600);
+
+  $enabledCheck = runCommand(array('systemctl', 'is-enabled', $legacyTimer), true);
+  $legacyTimerWasEnabled = $enabledCheck['exit'] === 0;
+
+  echo "Stoppe Legacy-Timer...\n";
+  runCommand(array('systemctl', 'stop', $legacyTimer));
+
+  $deadline = time() + 120;
+  do
+  {
+    $active = runCommand(array('systemctl', 'is-active', '--quiet', 'piwigo-sync.service'), true);
+    if ($active['exit'] !== 0) break;
+    if (time() >= $deadline) fail('Ein laufender Legacy-Sync wurde nach 120 Sekunden nicht beendet.');
+    sleep(2);
+  }
+  while (true);
+
+  @unlink($statusPath);
+  echo "Fuehre ersten Connector-Lauf aus...\n";
+  $firstRun = runCommand(array('env', 'PIWIGO_CONFIG='.$configPath, $legacyRuntime), true);
+  if ($firstRun['exit'] !== 0)
+  {
+    $detail = trim($firstRun['stderr']) !== '' ? trim($firstRun['stderr']) : trim($firstRun['stdout']);
+    fail('Erster Connector-Lauf ist technisch fehlgeschlagen'.($detail !== '' ? ': '.$detail : '.'));
+  }
+
+  $runResult = 'no_changes'; $statusState = ''; $statusMessage = '';
+  if (is_readable($statusPath))
+  {
+    $status = json_decode((string)file_get_contents($statusPath), true);
+    if (is_array($status))
+    {
+      $statusState = trim((string)($status['state'] ?? ''));
+      $statusMessage = trim((string)($status['message'] ?? ''));
+    }
+    $legacyNoChangeMessage = 'Synchronisierung fehlgeschlagen; bestehende Galerie blieb unverändert';
+    if ($statusState === 'error' && $statusMessage !== $legacyNoChangeMessage) fail('Erster Connector-Lauf meldete einen technischen Fehler'.($statusMessage !== '' ? ': '.$statusMessage : '.'));
+    if ($statusState === 'ok') $runResult = 'changed';
+    elseif ($statusState === 'error' && $statusMessage === $legacyNoChangeMessage)
+    {
+      $runResult = 'no_changes';
+      echo "Hinweis: Legacy-Runtime hat den erwarteten Activity-Gate-No-Op faelschlich als error markiert; Exit-Code 0 bestaetigt den erfolgreichen No-Change-Lauf.\n";
+    }
+  }
+
+  echo 'Erster Lauf Exit-Code: '.$firstRun['exit']."\n";
+  echo 'Connector-Status: '.($statusState !== '' ? $statusState : 'kein Abschlussstatus').($statusMessage !== '' ? ' - '.$statusMessage : '')."\n";
+  echo 'Bewertung: '.$runResult."\n";
+
+  $servicePath = '/etc/systemd/system/'.$newService;
+  $timerPath = '/etc/systemd/system/'.$newTimer;
+  $service = "[Unit]\nDescription=Bratonien NC Connector Sync\nAfter=network-online.target\nWants=network-online.target\n\n[Service]\nType=oneshot\nEnvironment=PIWIGO_CONFIG=".$configPath."\nExecStart=".$legacyRuntime."\n\n";
+  $timer = "[Unit]\nDescription=Bratonien NC Connector regelmaessig pruefen\n\n[Timer]\nOnBootSec=3min\nOnUnitActiveSec=1min\nRandomizedDelaySec=15s\nPersistent=true\n\n[Install]\nWantedBy=timers.target\n";
+  file_put_contents($servicePath, $service, LOCK_EX); file_put_contents($timerPath, $timer, LOCK_EX); chmod($servicePath,0644); chmod($timerPath,0644); $newTimerInstalled=true;
+
+  runCommand(array('systemctl','daemon-reload'));
+  runCommand(array('systemctl','disable',$legacyTimer),true);
+  runCommand(array('systemctl','enable','--now',$newTimer));
+
+  $config['takeover']['cutover_at']=date('Y-m-d H:i:s');
+  $config['takeover']['legacy_timer_disabled']=true;
+  $config['takeover']['connector_timer']=$newTimer;
+  $config['takeover']['runtime']='legacy-runtime-transition';
+  $config['takeover']['first_run']=array('state'=>'success','result'=>$runResult,'status_state'=>$statusState,'status_message'=>$statusMessage,'checked_at'=>date('Y-m-d H:i:s'));
+  saveTakeoverResult($db,$table,$connectionId,$config,'active',true);
+
+  echo "Cutover erfolgreich.\n";
+  echo "Erster Connector-Lauf: ".$runResult."\n";
+  echo "Legacy-Timer ist deaktiviert; ".$newTimer." ist aktiv.\n";
+  echo "Die bisherige Sync-Runtime bleibt fuer diesen Uebergangsschritt noch als Laufzeit erhalten.\n";
+}
+catch (Throwable $e)
+{
+  if ($db instanceof mysqli && $table !== '' && $config)
+  {
+    try
+    {
+      $config['takeover']['first_run']=array('state'=>'error','result'=>'error','checked_at'=>date('Y-m-d H:i:s'),'message'=>substr($e->getMessage(),0,500));
+      saveTakeoverResult($db,$table,$connectionId,$config,'ready',false);
+    }
+    catch (Throwable $ignored){}
+  }
+  if ($newTimerInstalled) runCommand(array('systemctl','disable','--now',$newTimer),true);
+  if ($legacyTimerWasEnabled) runCommand(array('systemctl','enable','--now',$legacyTimer),true);
+  else runCommand(array('systemctl','start',$legacyTimer),true);
+  fwrite(STDERR, "Cutover fehlgeschlagen: ".$e->getMessage()."\n");
+  fwrite(STDERR, "Legacy-Timer wurde wieder aktiviert/gestartet.\n");
+  exit(1);
+}

nc-connector-cutover.php

@@ -0,0 +1,374 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: sudo php nc-connector-cutover.php <connection-id>\n");
+  exit(1);
+}
+
+$connectionId = (int)$argv[1];
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$legacyConfig = '/etc/piwigo-sync/piwigo.conf';
+$legacyRuntime = '/opt/piwigo-sync/sync.sh';
+$newTimer = 'bratonien-nc-connector.timer';
+$newService = 'bratonien-nc-connector.service';
+$legacyTimer = 'piwigo-sync.timer';
+
+function fail($message)
+{
+  throw new RuntimeException($message);
+}
+
+function readKeyValueFile($path)
+{
+  if (!is_readable($path))
+  {
+    fail('Konfiguration nicht lesbar: '.$path);
+  }
+  $result = array();
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    if (!preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches))
+    {
+      continue;
+    }
+    $value = trim($matches[2]);
+    if (strlen($value) >= 2)
+    {
+      $first = $value[0];
+      $last = $value[strlen($value)-1];
+      if (($first === '"' && $last === '"') || ($first === "'" && $last === "'"))
+      {
+        $value = substr($value, 1, -1);
+      }
+    }
+    $result[$matches[1]] = $value;
+  }
+  return $result;
+}
+
+function runCommand(array $command, $allowFailure = false)
+{
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process))
+  {
+    fail('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    fail('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit, 'stdout'=>(string)$stdout, 'stderr'=>(string)$stderr);
+}
+
+function decryptConnectorSecret($blob, $hexKey)
+{
+  if (!preg_match('/^[a-f0-9]{64}$/', $hexKey))
+  {
+    fail('Connector-Schluessel ist ungueltig.');
+  }
+  $outer = base64_decode(trim((string)$blob), true);
+  $payload = is_string($outer) ? json_decode($outer, true) : null;
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1)
+  {
+    fail('Connector-Zugangsdaten haben ein unbekanntes Format.');
+  }
+  $iv = base64_decode((string)($payload['iv'] ?? ''), true);
+  $tag = base64_decode((string)($payload['tag'] ?? ''), true);
+  $cipher = base64_decode((string)($payload['data'] ?? ''), true);
+  $plain = openssl_decrypt($cipher, 'aes-256-gcm', hex2bin($hexKey), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($plain === false || $plain === '')
+  {
+    fail('Connector-Zugangsdaten konnten nicht entschluesselt werden.');
+  }
+  return (string)$plain;
+}
+
+function sqlEscape(mysqli $db, $value)
+{
+  return $db->real_escape_string((string)$value);
+}
+
+function saveTakeoverResult(mysqli $db, $table, $connectionId, array $config, $state, $enabled)
+{
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($json))
+  {
+    fail('Connector-Status konnte nicht serialisiert werden.');
+  }
+  $now = date('Y-m-d H:i:s');
+  $sql = "UPDATE `".$table."` SET takeover_state='".sqlEscape($db, $state)."', enabled=".($enabled ? 1 : 0).", config_json='".sqlEscape($db, $json)."', updated='".sqlEscape($db, $now)."' WHERE id=".(int)$connectionId;
+  if (!$db->query($sql))
+  {
+    fail('Connector-Status konnte nicht gespeichert werden: '.$db->error);
+  }
+}
+
+$legacyTimerWasEnabled = false;
+$newTimerInstalled = false;
+$db = null;
+$table = '';
+$config = array();
+
+try
+{
+  if (!is_readable($dbConfig))
+  {
+    fail('Piwigo-Datenbankkonfiguration nicht lesbar: '.$dbConfig);
+  }
+  if (!is_executable($legacyRuntime))
+  {
+    fail('Bestehende Sync-Runtime fehlt: '.$legacyRuntime);
+  }
+
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  require $dbConfig;
+  foreach (array('db_host','db_user','db_password','db_base') as $key)
+  {
+    if (!isset($conf[$key]))
+    {
+      fail('Piwigo-Datenbankkonfiguration enthaelt '.$key.' nicht.');
+    }
+  }
+
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno)
+  {
+    fail('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  }
+  $db->set_charset('utf8mb4');
+
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT id, takeover_state, enabled, config_json, secret_blob FROM `".$table."` WHERE id=".$connectionId." LIMIT 1");
+  if (!$result || !$result->num_rows)
+  {
+    fail('Connector-Verbindung #'.$connectionId.' wurde nicht gefunden.');
+  }
+  $row = $result->fetch_assoc();
+  if ((string)$row['takeover_state'] !== 'ready' || (int)$row['enabled'] !== 0)
+  {
+    fail('Connector-Verbindung muss im Zustand ready und deaktiviert sein.');
+  }
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config) || empty($config['verification']['ok']))
+  {
+    fail('Connector-Verbindung besitzt keine erfolgreiche Verifikation.');
+  }
+
+  $keyResult = $db->query("SELECT value FROM `".$prefixeTable."config` WHERE param='bratonien_nc_connector_secret' LIMIT 1");
+  if (!$keyResult || !$keyResult->num_rows)
+  {
+    fail('Connector-Schluessel wurde in Piwigo nicht gefunden.');
+  }
+  $keyRow = $keyResult->fetch_assoc();
+  $dbPassword = decryptConnectorSecret($row['secret_blob'], (string)$keyRow['value']);
+
+  $legacy = readKeyValueFile($legacyConfig);
+  $piwigoUser = trim((string)($legacy['PIWIGO_SYNC_USER'] ?? ''));
+  $piwigoPasswordFile = trim((string)($legacy['PIWIGO_SYNC_PASSWORD_FILE'] ?? '/etc/piwigo-sync/piwigo-password'));
+  if ($piwigoUser === '' || !is_readable($piwigoPasswordFile))
+  {
+    fail('Legacy-Piwigo-Sync-Zugangsdaten konnten fuer den einmaligen Cutover nicht gelesen werden.');
+  }
+  $piwigoPassword = trim((string)file_get_contents($piwigoPasswordFile));
+  if ($piwigoPassword === '')
+  {
+    fail('Legacy-Piwigo-Sync-Passwort ist leer.');
+  }
+
+  foreach (array('host','port','database','user','source_view','gallery_root','state_dir') as $key)
+  {
+    if (!isset($config[$key]) || trim((string)$config[$key]) === '')
+    {
+      fail('Connector-Konfiguration ist unvollstaendig: '.$key.' fehlt.');
+    }
+  }
+
+  $runtimeDir = '/etc/bratonien-tools/nc-connector';
+  if (!is_dir($runtimeDir) && !mkdir($runtimeDir, 0700, true))
+  {
+    fail('Connector-Laufzeitverzeichnis konnte nicht angelegt werden.');
+  }
+  chmod($runtimeDir, 0700);
+
+  $base = $runtimeDir.'/connection-'.$connectionId;
+  $dbPasswordPath = $base.'.db-password';
+  $piwigoPasswordPath = $base.'.piwigo-password';
+  $storagePath = $base.'.storages.tsv';
+  $configPath = $base.'.conf';
+  $statusPath = rtrim((string)$config['state_dir'], '/').'/connector-status.json';
+
+  file_put_contents($dbPasswordPath, $dbPassword."\n", LOCK_EX);
+  file_put_contents($piwigoPasswordPath, $piwigoPassword."\n", LOCK_EX);
+  chmod($dbPasswordPath, 0600);
+  chmod($piwigoPasswordPath, 0600);
+
+  $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount');
+  foreach ((array)($config['storages'] ?? array()) as $storage)
+  {
+    $storageLines[] = (string)($storage['storage_id'] ?? '')."\t".(string)($storage['source_prefix'] ?? '')."\t".(string)($storage['local_mount'] ?? '');
+  }
+  file_put_contents($storagePath, implode("\n", $storageLines)."\n", LOCK_EX);
+  chmod($storagePath, 0600);
+
+  $piwigoRootConfigured = isset($legacy['PIWIGO_ROOT']) && trim((string)$legacy['PIWIGO_ROOT']) !== '' ? trim((string)$legacy['PIWIGO_ROOT']) : $piwigoRoot;
+  $lines = array(
+    'PIWIGO_ROOT='.$piwigoRootConfigured,
+    'GALLERY_ROOT='.(string)$config['gallery_root'],
+    'STATE_DIR='.(string)$config['state_dir'],
+    'STATUS_FILE='.$statusPath,
+    'NC_DB_HOST='.(string)$config['host'],
+    'NC_DB_PORT='.(string)$config['port'],
+    'NC_DB_NAME='.(string)$config['database'],
+    'NC_DB_USER='.(string)$config['user'],
+    'NC_DB_VIEW='.(string)$config['source_view'],
+    'NC_DB_PASSWORD_FILE='.$dbPasswordPath,
+    'STORAGE_CONFIG='.$storagePath,
+    'QUIET_SECONDS='.(int)($config['quiet_seconds'] ?? 120),
+    'MAX_WAIT_SECONDS='.(int)($config['max_wait_seconds'] ?? 900),
+    'FULL_SYNC_SECONDS='.(int)($config['full_sync_seconds'] ?? 86400),
+    'PIWIGO_SYNC_ENABLED=1',
+    'PIWIGO_SYNC_USER='.$piwigoUser,
+    'PIWIGO_SYNC_PASSWORD_FILE='.$piwigoPasswordPath,
+  );
+  file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX);
+  chmod($configPath, 0600);
+
+  $enabledCheck = runCommand(array('systemctl', 'is-enabled', $legacyTimer), true);
+  $legacyTimerWasEnabled = $enabledCheck['exit'] === 0;
+
+  echo "Stoppe Legacy-Timer...\n";
+  runCommand(array('systemctl', 'stop', $legacyTimer));
+
+  $deadline = time() + 120;
+  do
+  {
+    $active = runCommand(array('systemctl', 'is-active', '--quiet', 'piwigo-sync.service'), true);
+    if ($active['exit'] !== 0)
+    {
+      break;
+    }
+    if (time() >= $deadline)
+    {
+      fail('Ein laufender Legacy-Sync wurde nach 120 Sekunden nicht beendet.');
+    }
+    sleep(2);
+  }
+  while (true);
+
+  @unlink($statusPath);
+  echo "Fuehre ersten Connector-Lauf aus...\n";
+  $firstRun = runCommand(array('env', 'PIWIGO_CONFIG='.$configPath, $legacyRuntime), true);
+  if ($firstRun['exit'] !== 0)
+  {
+    $detail = trim($firstRun['stderr']) !== '' ? trim($firstRun['stderr']) : trim($firstRun['stdout']);
+    fail('Erster Connector-Lauf ist technisch fehlgeschlagen'.($detail !== '' ? ': '.$detail : '.'));
+  }
+
+  $runResult = 'no_changes';
+  if (is_readable($statusPath))
+  {
+    $status = json_decode((string)file_get_contents($statusPath), true);
+    if (!is_array($status) || (string)($status['state'] ?? '') !== 'ok')
+    {
+      fail('Erster Connector-Lauf lieferte keinen gueltigen Erfolgsstatus.');
+    }
+    $runResult = 'changed';
+  }
+
+  $servicePath = '/etc/systemd/system/'.$newService;
+  $timerPath = '/etc/systemd/system/'.$newTimer;
+  $service = "[Unit]\nDescription=Bratonien NC Connector Sync\nAfter=network-online.target\nWants=network-online.target\n\n[Service]\nType=oneshot\nEnvironment=PIWIGO_CONFIG=".$configPath."\nExecStart=".$legacyRuntime."\n\n";
+  $timer = "[Unit]\nDescription=Bratonien NC Connector regelmaessig pruefen\n\n[Timer]\nOnBootSec=3min\nOnUnitActiveSec=1min\nRandomizedDelaySec=15s\nPersistent=true\n\n[Install]\nWantedBy=timers.target\n";
+  file_put_contents($servicePath, $service, LOCK_EX);
+  file_put_contents($timerPath, $timer, LOCK_EX);
+  chmod($servicePath, 0644);
+  chmod($timerPath, 0644);
+  $newTimerInstalled = true;
+
+  runCommand(array('systemctl', 'daemon-reload'));
+  runCommand(array('systemctl', 'disable', $legacyTimer), true);
+  runCommand(array('systemctl', 'enable', '--now', $newTimer));
+
+  $config['takeover']['cutover_at'] = date('Y-m-d H:i:s');
+  $config['takeover']['legacy_timer_disabled'] = true;
+  $config['takeover']['connector_timer'] = $newTimer;
+  $config['takeover']['runtime'] = 'legacy-runtime-transition';
+  $config['takeover']['first_run'] = array(
+    'state' => 'success',
+    'result' => $runResult,
+    'checked_at' => date('Y-m-d H:i:s'),
+  );
+  saveTakeoverResult($db, $table, $connectionId, $config, 'active', true);
+
+  echo "Cutover erfolgreich.\n";
+  echo "Erster Connector-Lauf: ".$runResult."\n";
+  echo "Legacy-Timer ist deaktiviert; ".$newTimer." ist aktiv.\n";
+  echo "Die bisherige Sync-Runtime bleibt fuer diesen Uebergangsschritt noch als Laufzeit erhalten.\n";
+}
+catch (Throwable $e)
+{
+  if ($db instanceof mysqli && $table !== '' && $config)
+  {
+    try
+    {
+      $config['takeover']['first_run'] = array(
+        'state' => 'error',
+        'result' => 'error',
+        'checked_at' => date('Y-m-d H:i:s'),
+        'message' => substr($e->getMessage(), 0, 500),
+      );
+      saveTakeoverResult($db, $table, $connectionId, $config, 'ready', false);
+    }
+    catch (Throwable $ignored)
+    {
+    }
+  }
+
+  if ($newTimerInstalled)
+  {
+    runCommand(array('systemctl', 'disable', '--now', $newTimer), true);
+  }
+  if ($legacyTimerWasEnabled)
+  {
+    runCommand(array('systemctl', 'enable', '--now', $legacyTimer), true);
+  }
+  else
+  {
+    runCommand(array('systemctl', 'start', $legacyTimer), true);
+  }
+
+  fwrite(STDERR, "Cutover fehlgeschlagen: ".$e->getMessage()."\n");
+  fwrite(STDERR, "Legacy-Timer wurde wieder aktiviert/gestartet.\n");
+  exit(1);
+}

nc-connector-diagnose.php

@@ -0,0 +1,110 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-diagnose.php <connection-id>\n");
+  exit(1);
+}
+
+$connectionId = (int)$argv[1];
+$configPath = '/etc/bratonien-tools/nc-connector/connection-'.$connectionId.'.conf';
+$runtime = '/opt/piwigo-sync/sync.sh';
+$legacyTimer = 'piwigo-sync.timer';
+$legacyService = 'piwigo-sync.service';
+
+function runCommand(array $command, $allowFailure = false)
+{
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process))
+  {
+    throw new RuntimeException('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    throw new RuntimeException('Befehl fehlgeschlagen: '.implode(' ', $command));
+  }
+  return array('exit'=>$exit, 'stdout'=>(string)$stdout, 'stderr'=>(string)$stderr);
+}
+
+$timerWasEnabled = false;
+
+try
+{
+  if (!is_readable($configPath))
+  {
+    throw new RuntimeException('Connector-Konfiguration fehlt oder ist nicht lesbar: '.$configPath.'. Fuehre zuerst den Cutover-Versuch mindestens einmal aus, damit die Laufzeitkonfiguration erzeugt wird.');
+  }
+  if (!is_executable($runtime))
+  {
+    throw new RuntimeException('Sync-Runtime fehlt: '.$runtime);
+  }
+
+  $enabled = runCommand(array('systemctl', 'is-enabled', $legacyTimer), true);
+  $timerWasEnabled = $enabled['exit'] === 0;
+
+  echo "Stoppe Legacy-Timer fuer die Diagnose...\n";
+  runCommand(array('systemctl', 'stop', $legacyTimer), true);
+
+  $deadline = time() + 120;
+  while (true)
+  {
+    $active = runCommand(array('systemctl', 'is-active', '--quiet', $legacyService), true);
+    if ($active['exit'] !== 0)
+    {
+      break;
+    }
+    if (time() >= $deadline)
+    {
+      throw new RuntimeException('Ein laufender Legacy-Sync wurde nach 120 Sekunden nicht beendet.');
+    }
+    sleep(2);
+  }
+
+  echo "Fuehre Connector-Lauf im Diagnosemodus aus...\n\n";
+  $result = runCommand(array('env', 'PIWIGO_CONFIG='.$configPath, 'bash', '-x', $runtime), true);
+
+  echo "===== STDOUT =====\n";
+  echo trim($result['stdout'])."\n";
+  echo "===== STDERR / TRACE =====\n";
+  echo trim($result['stderr'])."\n";
+  echo "===== ENDE =====\n";
+  echo 'Exit-Code: '.$result['exit']."\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, 'Diagnose fehlgeschlagen: '.$e->getMessage()."\n");
+}
+finally
+{
+  if ($timerWasEnabled)
+  {
+    runCommand(array('systemctl', 'enable', '--now', $legacyTimer), true);
+  }
+  else
+  {
+    runCommand(array('systemctl', 'start', $legacyTimer), true);
+  }
+  echo "Legacy-Timer wurde nach der Diagnose wieder aktiviert/gestartet.\n";
+}

nc-connector-disable.php

@@ -0,0 +1,81 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-disable.php <connection-id>\n");
+  exit(1);
+}
+
+$id = (int)$argv[1];
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$configDir = '/etc/bratonien-tools/nc-connector';
+
+try
+{
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  if (!is_readable($dbConfig)) throw new RuntimeException('Piwigo-Datenbankkonfiguration nicht lesbar.');
+  require $dbConfig;
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno) throw new RuntimeException('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  $db->set_charset('utf8mb4');
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT id, enabled, takeover_state, config_json FROM `".$table."` WHERE id=".$id." LIMIT 1");
+  if (!$result || !$result->num_rows) throw new RuntimeException('Connector-Verbindung #'.$id.' wurde nicht gefunden.');
+  $row = $result->fetch_assoc();
+  if ((int)$row['enabled'] !== 1 || (string)$row['takeover_state'] !== 'active')
+  {
+    throw new RuntimeException('Die Verbindung ist nicht aktiv.');
+  }
+
+  passthru('systemctl stop bratonien-nc-connector.timer', $stopExit);
+  if ($stopExit !== 0) throw new RuntimeException('Connector-Timer konnte nicht gestoppt werden.');
+
+  $base = $configDir.'/connection-'.$id;
+  foreach (array('.conf','.storages.tsv','.db-password','.piwigo-password') as $suffix)
+  {
+    $path = $base.$suffix;
+    if (is_file($path) && !unlink($path)) throw new RuntimeException('Datei konnte nicht entfernt werden: '.$path);
+  }
+
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config)) $config = array();
+  unset($config['runtime']);
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  $now = date('Y-m-d H:i:s');
+  $jsonEsc = $db->real_escape_string((string)$json);
+  $nowEsc = $db->real_escape_string($now);
+  if (!$db->query("UPDATE `".$table."` SET enabled=0, takeover_state='disabled', config_json='".$jsonEsc."', updated='".$nowEsc."' WHERE id=".$id))
+  {
+    throw new RuntimeException('Connector-Status konnte nicht gespeichert werden: '.$db->error);
+  }
+
+  $remaining = glob($configDir.'/connection-*.conf') ?: array();
+  if ($remaining)
+  {
+    passthru('systemctl start bratonien-nc-connector.timer', $startExit);
+    if ($startExit !== 0) throw new RuntimeException('Connector-Timer konnte nicht wieder gestartet werden.');
+    echo "Verbindung #".$id." deaktiviert. Andere Connector-Verbindungen bleiben aktiv.\n";
+  }
+  else
+  {
+    passthru('systemctl disable bratonien-nc-connector.timer', $disableExit);
+    echo "Verbindung #".$id." deaktiviert. Es gibt keine weitere aktive Connector-Verbindung; der Timer bleibt gestoppt.\n";
+  }
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, $e->getMessage()."\n");
+  exit(1);
+}

nc-connector-edit-data.php

@@ -0,0 +1,100 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Bratonien Tools ist nicht aktiv.'));
+  exit;
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  http_response_code(403);
+  echo json_encode(array('error'=>'Administratorrechte erforderlich.'));
+  exit;
+}
+
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_manage.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_connection_scope.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_edit.inc.php');
+
+$id = (int)($_GET['connection_id'] ?? 0);
+$connection = bratonien_tools_nc_connector_connection($id, true);
+if (!$connection)
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Connector-Verbindung wurde nicht gefunden.'));
+  exit;
+}
+
+$config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+$credentials = array();
+$migration = array('ready'=>false, 'missing'=>array());
+try
+{
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  if ((string)$connection['adapter'] === 'local')
+  {
+    $migration = bratonien_tools_nc_connector_migration_state($connection);
+  }
+}
+catch (Throwable $e)
+{
+  $credentials = array();
+  $migration = array('ready'=>false, 'missing'=>array('gespeicherte Zugangsdaten konnten nicht gelesen werden'));
+}
+
+$storages = array();
+foreach ((array)($config['storages'] ?? array()) as $storage)
+{
+  $storages[] = array(
+    'storage_id'=>(string)($storage['storage_id'] ?? ''),
+    'source_prefix'=>(string)($storage['source_prefix'] ?? ''),
+    'local_mount'=>(string)($storage['local_mount'] ?? ''),
+  );
+}
+
+$payload = array(
+  'id'=>(int)$connection['id'],
+  'name'=>(string)$connection['name'],
+  'adapter'=>(string)$connection['adapter'],
+  'enabled'=>(bool)$connection['enabled'],
+  'takeover_state'=>(string)$connection['takeover_state'],
+  'source_mode'=>(string)($config['source_mode'] ?? ''),
+  'legacy'=>array(
+    'host'=>(string)($config['host'] ?? ''),
+    'port'=>(string)($config['port'] ?? '5432'),
+    'database'=>(string)($config['database'] ?? ''),
+    'user'=>(string)($config['user'] ?? ''),
+    'has_db_password'=>trim((string)($credentials['db_password'] ?? '')) !== '',
+    'source_view'=>(string)($config['source_view'] ?? ''),
+    'activity_view'=>(string)($config['activity_view'] ?? ''),
+    'gallery_root'=>(string)($config['gallery_root'] ?? ''),
+    'quiet_seconds'=>(int)($config['quiet_seconds'] ?? 120),
+    'max_wait_seconds'=>(int)($config['max_wait_seconds'] ?? 900),
+    'full_sync_seconds'=>(int)($config['full_sync_seconds'] ?? 86400),
+    'storages'=>$storages,
+  ),
+  'webdav'=>array(
+    'nextcloud_url'=>(string)($config['nextcloud_url'] ?? ''),
+    'nextcloud_user'=>(string)($credentials['nextcloud_user'] ?? $config['nextcloud_access_user'] ?? $config['access_user'] ?? ''),
+    'has_nextcloud_password'=>(string)($credentials['nextcloud_password'] ?? '') !== '',
+    'api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
+    'has_api_key_secret'=>trim((string)($credentials['api_key_secret'] ?? '')) !== '',
+    'migration_ready'=>!empty($migration['ready']),
+    'migration_missing'=>array_values((array)($migration['missing'] ?? array())),
+  ),
+);
+
+echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

nc-connector-edit-save.php

@@ -0,0 +1,312 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+function bratonien_tools_nc_edit_json($status, array $payload)
+{
+  http_response_code((int)$status);
+  echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  exit;
+}
+
+function bratonien_tools_nc_edit_fail($message, array $fields = array(), $stage = '', $detail = '')
+{
+  $visible = trim((string)$message);
+  if ($stage !== '') $visible = 'Bereich: '.$stage.' — '.$visible;
+  if ($detail !== '') $visible .= ' Technische Ursache: '.$detail;
+
+  bratonien_tools_nc_edit_json(422, array(
+    'ok'=>false,
+    'message'=>$visible,
+    'stage'=>(string)$stage,
+    'detail'=>(string)$detail,
+    'fields'=>array_values(array_unique($fields)),
+  ));
+}
+
+function bratonien_tools_nc_edit_probe($url, $username = '', $password = '', array $headers = array())
+{
+  if (!function_exists('curl_init'))
+  {
+    return array('ok'=>false, 'http'=>0, 'errno'=>-1, 'error'=>'cURL ist in PHP nicht verfügbar.', 'body'=>'');
+  }
+
+  $ch = curl_init($url);
+  $options = array(
+    CURLOPT_RETURNTRANSFER=>true,
+    CURLOPT_FOLLOWLOCATION=>true,
+    CURLOPT_MAXREDIRS=>3,
+    CURLOPT_CONNECTTIMEOUT=>8,
+    CURLOPT_TIMEOUT=>15,
+    CURLOPT_HTTPHEADER=>array_merge(array('Accept: application/json'), $headers),
+    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Editor/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+  );
+  if ($username !== '')
+  {
+    $options[CURLOPT_HTTPAUTH] = CURLAUTH_BASIC;
+    $options[CURLOPT_USERPWD] = $username.':'.$password;
+  }
+  curl_setopt_array($ch, $options);
+  $body = curl_exec($ch);
+  $errno = curl_errno($ch);
+  $error = curl_error($ch);
+  $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+  curl_close($ch);
+
+  return array(
+    'ok'=>$body !== false && $errno === 0,
+    'http'=>$http,
+    'errno'=>$errno,
+    'error'=>$error,
+    'body'=>$body === false ? '' : (string)$body,
+  );
+}
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  bratonien_tools_nc_edit_json(404, array('ok'=>false, 'message'=>'Bratonien Tools ist nicht aktiv.', 'fields'=>array()));
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  bratonien_tools_nc_edit_json(403, array('ok'=>false, 'message'=>'Administratorrechte erforderlich.', 'fields'=>array()));
+}
+if (($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST')
+{
+  bratonien_tools_nc_edit_json(405, array('ok'=>false, 'message'=>'Nur POST ist erlaubt.', 'fields'=>array()));
+}
+
+try
+{
+  check_pwg_token();
+  require_once(BRATONIEN_TOOLS_PATH.'include/tool_registry.inc.php');
+
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    bratonien_tools_nc_edit_fail('Die zu bearbeitende Verbindung wurde nicht gefunden.', array(), 'Verbindung');
+  }
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $nextcloud_input = trim((string)($_POST['nc_nextcloud_url'] ?? ($config['nextcloud_url'] ?? '')));
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? ($credentials['nextcloud_user'] ?? '')));
+  $submitted_nc_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  $nextcloud_password = $submitted_nc_password !== '' ? $submitted_nc_password : (string)($credentials['nextcloud_password'] ?? '');
+
+  $has_any_nextcloud = $nextcloud_input !== '' || $nextcloud_user !== '' || $nextcloud_password !== '';
+  if ($has_any_nextcloud)
+  {
+    $missing = array();
+    if ($nextcloud_input === '') $missing[] = 'nc_nextcloud_url';
+    if ($nextcloud_user === '') $missing[] = 'nc_nextcloud_user';
+    if ($nextcloud_password === '') $missing[] = 'nc_nextcloud_password';
+    if ($missing)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Die WebDAV-Daten sind unvollständig. Adresse, Benutzer und Passwort werden gemeinsam benötigt.',
+        $missing,
+        'Nextcloud / WebDAV'
+      );
+    }
+
+    try
+    {
+      $candidate_urls = bratonien_tools_nc_wizard_candidate_urls($nextcloud_input);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail($e->getMessage(), array('nc_nextcloud_url'), 'Nextcloud / WebDAV');
+    }
+
+    $nextcloud_url = '';
+    $last_probe = null;
+    $last_status_url = '';
+    foreach ($candidate_urls as $candidate_url)
+    {
+      $status_url = $candidate_url.'/status.php';
+      $probe = bratonien_tools_nc_edit_probe($status_url);
+      $last_probe = $probe;
+      $last_status_url = $status_url;
+
+      if (!$probe['ok'] || $probe['http'] < 200 || $probe['http'] >= 300)
+      {
+        continue;
+      }
+
+      $status = json_decode($probe['body'], true);
+      if (!is_array($status) || empty($status['installed']))
+      {
+        continue;
+      }
+
+      $nextcloud_url = $candidate_url;
+      break;
+    }
+
+    if ($nextcloud_url === '')
+    {
+      $attempts = array();
+      foreach ($candidate_urls as $candidate_url)
+      {
+        $attempts[] = $candidate_url.'/status.php';
+      }
+      if (is_array($last_probe) && !$last_probe['ok'])
+      {
+        $technical = $last_probe['errno'] >= 0
+          ? 'cURL '.$last_probe['errno'].($last_probe['error'] !== '' ? ': '.$last_probe['error'] : '')
+          : $last_probe['error'];
+        bratonien_tools_nc_edit_fail(
+          'Die Nextcloud-Adresse ist vom Piwigo-Server aus nicht erreichbar. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+          array('nc_nextcloud_url'),
+          'Nextcloud / WebDAV – Erreichbarkeit',
+          $technical.' · Geprüft: '.implode(' ; ', $attempts)
+        );
+      }
+
+      bratonien_tools_nc_edit_fail(
+        'Unter der angegebenen Adresse wurde keine erreichbare installierte Nextcloud gefunden. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+        array('nc_nextcloud_url'),
+        'Nextcloud / WebDAV – Erkennung',
+        'Geprüft: '.implode(' ; ', $attempts).($last_probe ? ' · Letzter HTTP-Status: '.$last_probe['http'] : '')
+      );
+    }
+
+    $_POST['nc_nextcloud_url'] = $nextcloud_url;
+
+    $user_url = $nextcloud_url.'/ocs/v2.php/cloud/user?format=json';
+    $user_probe = bratonien_tools_nc_edit_probe($user_url, $nextcloud_user, $nextcloud_password, array('OCS-APIRequest: true'));
+    if (!$user_probe['ok'])
+    {
+      $technical = $user_probe['errno'] >= 0
+        ? 'cURL '.$user_probe['errno'].($user_probe['error'] !== '' ? ': '.$user_probe['error'] : '')
+        : $user_probe['error'];
+      bratonien_tools_nc_edit_fail(
+        'Die Nextcloud-Anmeldung konnte technisch nicht geprüft werden.',
+        array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        $technical.' · Ziel: '.$user_url
+      );
+    }
+    if ($user_probe['http'] === 401 || $user_probe['http'] === 403)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud hat Benutzername oder Passwort abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http']
+      );
+    }
+    if ($user_probe['http'] < 200 || $user_probe['http'] >= 300)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud ist erreichbar, aber die Benutzerprüfung wurde vom Server abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http'].' · Ziel: '.$user_url
+      );
+    }
+    try
+    {
+      bratonien_tools_nc_wizard_ocs_data($user_probe['body']);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud antwortet auf die Benutzerprüfung, die Antwort ist aber nicht gültig: '.$e->getMessage(),
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung'
+      );
+    }
+  }
+
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ($credentials['api_key_id'] ?? '')));
+  $submitted_api_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  $api_key_secret = $submitted_api_secret !== '' ? $submitted_api_secret : trim((string)($credentials['api_key_secret'] ?? ''));
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    $missing = $api_key_id === '' ? array('nc_connection_api_key_id') : array('nc_connection_api_key_secret');
+    bratonien_tools_nc_edit_fail(
+      'API-Schlüssel-ID und API-Geheimnis müssen gemeinsam vollständig sein.',
+      $missing,
+      'Piwigo API'
+    );
+  }
+  if ($api_key_id !== '')
+  {
+    try
+    {
+      bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Der Piwigo-API-Zugang konnte nicht bestätigt werden: '.$e->getMessage(),
+        array('nc_connection_api_key_id','nc_connection_api_key_secret'),
+        'Piwigo API'
+      );
+    }
+  }
+
+  $result = bratonien_tools_nc_connector_update_local_friendly();
+  bratonien_tools_nc_edit_json(200, array(
+    'ok'=>true,
+    'message'=>(string)($result['message'] ?? 'Verbindung wurde gespeichert.'),
+    'fields'=>array(),
+  ));
+}
+catch (Throwable $e)
+{
+  $message = trim($e->getMessage());
+  if ($message === '') $message = 'Die Verbindung konnte nicht gespeichert werden.';
+
+  $fields = array();
+  $stage = 'Verbindung';
+  $add = function($name) use (&$fields)
+  {
+    if (!in_array($name, $fields, true)) $fields[] = $name;
+  };
+
+  if (stripos($message, 'Name') !== false && stripos($message, 'Datenbankname') === false) $add('connection_name');
+  if (stripos($message, 'Datenbank-Server') !== false) { $add('nc_host'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbank-Port') !== false) { $add('nc_port'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankname') !== false) { $add('nc_database'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Reader-Benutzer') !== false) { $add('nc_user'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankpasswort') !== false) { $add('nc_db_password'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Storage-ID') !== false) { $add('nc_storage_id[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'lokaler Pfad') !== false || stripos($message, 'Speicherort') !== false) { $add('nc_local_mount[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'Galerieordner') !== false) { $add('nc_gallery_root'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Source-View') !== false) { $add('nc_source_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Activity-View') !== false) { $add('nc_activity_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+
+  if (stripos($message, 'Nextcloud') !== false)
+  {
+    $stage = 'Nextcloud / WebDAV';
+    if (stripos($message, 'Adresse') !== false) $add('nc_nextcloud_url');
+    if (stripos($message, 'Benutzer') !== false) $add('nc_nextcloud_user');
+    if (stripos($message, 'Passwort') !== false) $add('nc_nextcloud_password');
+  }
+  if (stripos($message, 'API') !== false)
+  {
+    $stage = 'Piwigo API';
+    $add('nc_connection_api_key_id');
+    $add('nc_connection_api_key_secret');
+  }
+
+  bratonien_tools_nc_edit_fail(
+    $message,
+    $fields,
+    $stage,
+    'Interne Prüfung: '.get_class($e)
+  );
+}

nc-connector-install.php

@@ -0,0 +1,188 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-install.php <connection-id>\n");
+  exit(1);
+}
+
+$id = (int)$argv[1];
+$pluginRoot = __DIR__;
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$configDir = '/etc/bratonien-tools/nc-connector';
+$stateRoot = '/var/lib/bratonien-tools/nc-connector';
+$servicePath = '/etc/systemd/system/bratonien-nc-connector.service';
+$timerPath = '/etc/systemd/system/bratonien-nc-connector.timer';
+
+function fail_install($message) { throw new RuntimeException($message); }
+
+function run_install(array $command, $allowFailure = false)
+{
+  $spec = array(0=>array('file','/dev/null','r'),1=>array('pipe','w'),2=>array('pipe','w'));
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process)) fail_install('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]); fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    fail_install('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit,'stdout'=>(string)$stdout,'stderr'=>(string)$stderr);
+}
+
+function decrypt_install_credentials($blob, $hexKey)
+{
+  if (!preg_match('/^[a-f0-9]{64}$/', $hexKey)) fail_install('Connector-Schluessel ist ungueltig.');
+  $outer = base64_decode(trim((string)$blob), true);
+  $payload = is_string($outer) ? json_decode($outer, true) : null;
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) fail_install('Connector-Zugangsdaten haben ein unbekanntes Format.');
+  $iv = base64_decode((string)($payload['iv'] ?? ''), true);
+  $tag = base64_decode((string)($payload['tag'] ?? ''), true);
+  $cipher = base64_decode((string)($payload['data'] ?? ''), true);
+  $plain = openssl_decrypt($cipher, 'aes-256-gcm', hex2bin($hexKey), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($plain === false || $plain === '') fail_install('Connector-Zugangsdaten konnten nicht entschluesselt werden.');
+  $decoded = json_decode($plain, true);
+  if (!is_array($decoded))
+  {
+    return array('db_password'=>$plain,'piwigo_user'=>'','piwigo_password'=>'');
+  }
+  if (empty($decoded['db_password'])) fail_install('Datenbankpasswort fehlt in den Connector-Zugangsdaten.');
+  return array(
+    'db_password'=>(string)$decoded['db_password'],
+    'piwigo_user'=>(string)($decoded['piwigo_user'] ?? ''),
+    'piwigo_password'=>(string)($decoded['piwigo_password'] ?? ''),
+  );
+}
+
+function sql_install(mysqli $db, $value) { return $db->real_escape_string((string)$value); }
+
+try
+{
+  if (!is_readable($dbConfig)) fail_install('Piwigo-Datenbankkonfiguration nicht lesbar: '.$dbConfig);
+  $conf = array(); $prefixeTable = 'piwigo_'; require $dbConfig;
+  foreach (array('db_host','db_user','db_password','db_base') as $key) if (!isset($conf[$key])) fail_install('Piwigo-Datenbankkonfiguration enthaelt '.$key.' nicht.');
+
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno) fail_install('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  $db->set_charset('utf8mb4');
+
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT id, name, adapter, enabled, takeover_state, config_json, secret_blob FROM `".$table."` WHERE id=".$id." LIMIT 1");
+  if (!$result || !$result->num_rows) fail_install('Connector-Verbindung #'.$id.' wurde nicht gefunden.');
+  $row = $result->fetch_assoc();
+  if ((string)$row['adapter'] !== 'local') fail_install('Native Aktivierung ist derzeit nur fuer lokale Verbindungen verfuegbar.');
+  if ((string)$row['takeover_state'] !== 'verified' || (int)$row['enabled'] !== 0) fail_install('Die Verbindung muss zuerst erfolgreich verifiziert und deaktiviert sein.');
+
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config) || empty($config['verification']['ok'])) fail_install('Erfolgreiche Verifikation fehlt.');
+  foreach (array('host','port','database','user','source_view','activity_view','gallery_root') as $key) if (trim((string)($config[$key] ?? '')) === '') fail_install('Connector-Konfiguration ist unvollstaendig: '.$key.' fehlt.');
+
+  $keyResult = $db->query("SELECT value FROM `".$prefixeTable."config` WHERE param='bratonien_nc_connector_secret' LIMIT 1");
+  if (!$keyResult || !$keyResult->num_rows) fail_install('Connector-Schluessel wurde in Piwigo nicht gefunden.');
+  $credentials = decrypt_install_credentials((string)$row['secret_blob'], (string)$keyResult->fetch_assoc()['value']);
+
+  $apiAvailable = false;
+  $apiResult = $db->query("SELECT value FROM `".$prefixeTable."config` WHERE param='bratonien_nc_piwigo_api' LIMIT 1");
+  if ($apiResult && $apiResult->num_rows) $apiAvailable = trim((string)$apiResult->fetch_assoc()['value']) !== '';
+  $fallbackAvailable = $credentials['piwigo_user'] !== '' && $credentials['piwigo_password'] !== '';
+  if (!$apiAvailable && !$fallbackAvailable) fail_install('Weder Piwigo-API noch Fallback-Zugang sind gespeichert.');
+
+  $stateDir = $stateRoot.'/connection-'.$id;
+  $statusFile = $stateDir.'/connector-status.json';
+  if (!is_dir($configDir) && !mkdir($configDir, 0700, true)) fail_install('Konfigurationsverzeichnis konnte nicht angelegt werden.');
+  if (!is_dir($stateDir) && !mkdir($stateDir, 0750, true)) fail_install('State-Verzeichnis konnte nicht angelegt werden.');
+  chmod($configDir, 0700); chmod($stateDir, 0750);
+
+  $base = $configDir.'/connection-'.$id;
+  $dbPasswordPath = $base.'.db-password';
+  $piwigoPasswordPath = $base.'.piwigo-password';
+  $storagePath = $base.'.storages.tsv';
+  $configPath = $base.'.conf';
+
+  file_put_contents($dbPasswordPath, (string)$credentials['db_password']."\n", LOCK_EX); chmod($dbPasswordPath, 0600);
+  if ($fallbackAvailable)
+  {
+    file_put_contents($piwigoPasswordPath, (string)$credentials['piwigo_password']."\n", LOCK_EX); chmod($piwigoPasswordPath, 0600);
+  }
+  else
+  {
+    @unlink($piwigoPasswordPath);
+  }
+
+  $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount<TAB>include_prefix');
+  foreach ((array)($config['storages'] ?? array()) as $storage)
+  {
+    $storageLines[] = (string)($storage['storage_id'] ?? '')."\t"
+      .trim((string)($storage['source_prefix'] ?? ''), '/')."\t"
+      .(string)($storage['local_mount'] ?? '')."\t"
+      .trim((string)($storage['include_prefix'] ?? ''), '/');
+  }
+  if (count($storageLines) === 1) fail_install('Keine Storage-Zuordnungen gespeichert.');
+  file_put_contents($storagePath, implode("\n", $storageLines)."\n", LOCK_EX); chmod($storagePath, 0600);
+
+  $lines = array(
+    'PIWIGO_ROOT='.$piwigoRoot,
+    'GALLERY_ROOT='.(string)$config['gallery_root'],
+    'STATE_DIR='.$stateDir,
+    'STATUS_FILE='.$statusFile,
+    'NC_DB_HOST='.(string)$config['host'],
+    'NC_DB_PORT='.(string)$config['port'],
+    'NC_DB_NAME='.(string)$config['database'],
+    'NC_DB_USER='.(string)$config['user'],
+    'NC_DB_VIEW='.(string)$config['source_view'],
+    'NC_ACTIVITY_VIEW='.(string)$config['activity_view'],
+    'NC_DB_PASSWORD_FILE='.$dbPasswordPath,
+    'STORAGE_CONFIG='.$storagePath,
+    'QUIET_SECONDS='.(int)($config['quiet_seconds'] ?? 120),
+    'MAX_WAIT_SECONDS='.(int)($config['max_wait_seconds'] ?? 900),
+    'FULL_SYNC_SECONDS='.(int)($config['full_sync_seconds'] ?? 86400),
+    'PIWIGO_SYNC_ENABLED=1',
+  );
+  if ($fallbackAvailable)
+  {
+    $lines[] = 'PIWIGO_SYNC_USER='.(string)$credentials['piwigo_user'];
+    $lines[] = 'PIWIGO_SYNC_PASSWORD_FILE='.$piwigoPasswordPath;
+  }
+  file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX); chmod($configPath, 0600);
+
+  echo "Teste Verbindung mit Plugin-Runtime...\n";
+  $test = run_install(array('env', 'PIWIGO_CONFIG='.$configPath, 'bash', $pluginRoot.'/runtime/sync.sh'), true);
+  if ($test['exit'] !== 0)
+  {
+    @unlink($configPath); @unlink($storagePath); @unlink($dbPasswordPath); @unlink($piwigoPasswordPath);
+    $detail = trim($test['stderr']) !== '' ? trim($test['stderr']) : trim($test['stdout']);
+    fail_install('Runtime-Test fehlgeschlagen'.($detail !== '' ? ': '.$detail : '.'));
+  }
+
+  $service = "[Unit]\nDescription=Bratonien NC Connector Sync\nAfter=network-online.target\nWants=network-online.target\n\n[Service]\nType=oneshot\nExecStart=/usr/bin/env bash ".$pluginRoot."/runtime/run-all.sh\n\n";
+  $timer = "[Unit]\nDescription=Bratonien NC Connector regelmaessig pruefen\n\n[Timer]\nOnBootSec=3min\nOnUnitActiveSec=1min\nRandomizedDelaySec=15s\nPersistent=true\n\n[Install]\nWantedBy=timers.target\n";
+  file_put_contents($servicePath, $service, LOCK_EX); file_put_contents($timerPath, $timer, LOCK_EX); chmod($servicePath,0644); chmod($timerPath,0644);
+
+  $config['state_dir']=$stateDir;$config['status_file']=$statusFile;$config['runtime']=array('mode'=>'plugin-runtime','config'=>$configPath);
+  $json=json_encode($config,JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);$now=date('Y-m-d H:i:s');
+  if (!$db->query("UPDATE `".$table."` SET enabled=1, takeover_state='active', config_json='".sql_install($db,$json)."', updated='".sql_install($db,$now)."' WHERE id=".$id)) fail_install('Connector-Status konnte nicht gespeichert werden: '.$db->error);
+
+  run_install(array('systemctl','daemon-reload')); run_install(array('systemctl','enable','--now','bratonien-nc-connector.timer'));
+  echo "Aktivierung erfolgreich.\n";
+  echo "Verbindung #".$id." verwendet jetzt den nativen Bratonien-Tools-State unter ".$stateDir.".\n";
+  echo "Der gemeinsame Connector-Timer verarbeitet alle installierten connection-*.conf Dateien.\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, $e->getMessage()."\n");
+  exit(1);
+}

nc-connector-legacy-cleanup.php

@@ -0,0 +1,183 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-legacy-cleanup.php <connection-id>\n");
+  exit(1);
+}
+
+$connectionId = (int)$argv[1];
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$pluginRuntime = __DIR__.'/runtime/sync.sh';
+$configPath = '/etc/bratonien-tools/nc-connector/connection-'.$connectionId.'.conf';
+$connectorService = '/etc/systemd/system/bratonien-nc-connector.service';
+$connectorTimer = 'bratonien-nc-connector.timer';
+$legacyServiceName = 'piwigo-sync.service';
+$legacyTimerName = 'piwigo-sync.timer';
+$legacyServicePath = '/etc/systemd/system/'.$legacyServiceName;
+$legacyTimerPath = '/etc/systemd/system/'.$legacyTimerName;
+
+function cleanupFail($message)
+{
+  throw new RuntimeException($message);
+}
+
+function cleanupRun(array $command, $allowFailure = false)
+{
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process))
+  {
+    cleanupFail('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    cleanupFail('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit, 'stdout'=>(string)$stdout, 'stderr'=>(string)$stderr);
+}
+
+function cleanupRemoveTree($path)
+{
+  if (!file_exists($path) && !is_link($path))
+  {
+    return;
+  }
+  if (is_link($path) || is_file($path))
+  {
+    if (!@unlink($path))
+    {
+      cleanupFail('Datei konnte nicht entfernt werden: '.$path);
+    }
+    return;
+  }
+  $items = scandir($path);
+  if (!is_array($items))
+  {
+    cleanupFail('Verzeichnis konnte nicht gelesen werden: '.$path);
+  }
+  foreach ($items as $item)
+  {
+    if ($item === '.' || $item === '..')
+    {
+      continue;
+    }
+    cleanupRemoveTree($path.'/'.$item);
+  }
+  if (!@rmdir($path))
+  {
+    cleanupFail('Verzeichnis konnte nicht entfernt werden: '.$path);
+  }
+}
+
+try
+{
+  foreach (array($dbConfig, $configPath, $connectorService, $pluginRuntime) as $required)
+  {
+    if (!is_readable($required))
+    {
+      cleanupFail('Erforderliche Connector-Datei fehlt oder ist nicht lesbar: '.$required);
+    }
+  }
+
+  $serviceDefinition = (string)file_get_contents($connectorService);
+  if (strpos($serviceDefinition, $pluginRuntime) === false)
+  {
+    cleanupFail('Der aktive Connector-Service verwendet noch nicht die Plugin-eigene Runtime. Legacy-Bestand wird nicht entfernt.');
+  }
+
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  require $dbConfig;
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno)
+  {
+    cleanupFail('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  }
+  $db->set_charset('utf8mb4');
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT takeover_state, enabled, config_json FROM `".$table."` WHERE id=".$connectionId." LIMIT 1");
+  if (!$result || !$result->num_rows)
+  {
+    cleanupFail('Connector-Verbindung #'.$connectionId.' wurde nicht gefunden.');
+  }
+  $row = $result->fetch_assoc();
+  $config = json_decode((string)$row['config_json'], true);
+  if ((string)$row['takeover_state'] !== 'active' || (int)$row['enabled'] !== 1 || !is_array($config))
+  {
+    cleanupFail('Legacy-Cleanup ist nur fuer eine aktive Connector-Verbindung erlaubt.');
+  }
+  if (($config['takeover']['runtime'] ?? '') !== 'plugin-runtime')
+  {
+    cleanupFail('Connector-Status bestaetigt die Plugin-Runtime noch nicht. Legacy-Bestand wird nicht entfernt.');
+  }
+
+  $active = cleanupRun(array('systemctl', 'is-active', $connectorTimer), true);
+  if ($active['exit'] !== 0)
+  {
+    cleanupFail('Der Connector-Timer ist nicht aktiv. Vor dem Cleanup muss der produktive Connector laufen.');
+  }
+
+  echo "Deaktiviere verbliebene Legacy-Units...\n";
+  cleanupRun(array('systemctl', 'disable', '--now', $legacyTimerName), true);
+  cleanupRun(array('systemctl', 'stop', $legacyServiceName), true);
+
+  echo "Entferne alte systemd-Units...\n";
+  foreach (array($legacyTimerPath, $legacyServicePath) as $path)
+  {
+    if (is_file($path) || is_link($path))
+    {
+      @unlink($path);
+    }
+  }
+
+  echo "Entferne /opt/piwigo-sync...\n";
+  cleanupRemoveTree('/opt/piwigo-sync');
+
+  echo "Entferne /etc/piwigo-sync...\n";
+  cleanupRemoveTree('/etc/piwigo-sync');
+
+  cleanupRun(array('systemctl', 'daemon-reload'));
+  cleanupRun(array('systemctl', 'reset-failed', $legacyServiceName), true);
+
+  $config['takeover']['legacy_cleaned_at'] = date('Y-m-d H:i:s');
+  $config['takeover']['legacy_cleanup'] = true;
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (is_string($json))
+  {
+    $now = date('Y-m-d H:i:s');
+    $escapedJson = $db->real_escape_string($json);
+    $escapedNow = $db->real_escape_string($now);
+    $db->query("UPDATE `".$table."` SET config_json='".$escapedJson."', updated='".$escapedNow."' WHERE id=".$connectionId);
+  }
+
+  echo "Legacy-Cleanup erfolgreich.\n";
+  echo "Entfernt: /opt/piwigo-sync, /etc/piwigo-sync sowie piwigo-sync.service/timer.\n";
+  echo "/var/lib/piwigo-sync bleibt bestehen, weil dort der aktive Connector seinen Laufzeitstatus, Name-Map und Activity-State fuehrt.\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, "Legacy-Cleanup abgebrochen: ".$e->getMessage()."\n");
+  exit(1);
+}

nc-connector-migrate.php

@@ -0,0 +1,133 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+
+$configPath = '/etc/piwigo-sync/piwigo.conf';
+$storagePath = '/etc/piwigo-sync/storages.tsv';
+$bundlePath = '/tmp/bratonien-tools-nc-import.json';
+
+function readLegacyConfig($path)
+{
+  if (!is_readable($path))
+  {
+    throw new RuntimeException('Legacy-Konfiguration nicht lesbar: '.$path);
+  }
+
+  $config = array();
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    if (!preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches))
+    {
+      continue;
+    }
+    $value = trim($matches[2]);
+    if (strlen($value) >= 2)
+    {
+      $first = $value[0];
+      $last = $value[strlen($value)-1];
+      if (($first === '"' && $last === '"') || ($first === "'" && $last === "'"))
+      {
+        $value = substr($value, 1, -1);
+      }
+    }
+    $config[$matches[1]] = $value;
+  }
+
+  return $config;
+}
+
+function readStorages($path)
+{
+  $storages = array();
+  if (!is_readable($path))
+  {
+    return $storages;
+  }
+
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    $parts = explode("\t", $line);
+    if (count($parts) !== 3)
+    {
+      continue;
+    }
+    $storages[] = array(
+      'storage_id' => $parts[0],
+      'source_prefix' => $parts[1],
+      'local_mount' => $parts[2],
+    );
+  }
+
+  return $storages;
+}
+
+try
+{
+  $config = readLegacyConfig($configPath);
+  $passwordPath = isset($config['NC_DB_PASSWORD_FILE']) ? $config['NC_DB_PASSWORD_FILE'] : '/etc/piwigo-sync/nextcloud-db-password';
+  if (!is_readable($passwordPath))
+  {
+    throw new RuntimeException('Nextcloud-Datenbankpasswort nicht lesbar: '.$passwordPath);
+  }
+
+  $password = trim((string)file_get_contents($passwordPath));
+  if ($password === '')
+  {
+    throw new RuntimeException('Nextcloud-Datenbankpasswort ist leer.');
+  }
+
+  $bundle = array(
+    'format' => 1,
+    'created_at' => gmdate('c'),
+    'config' => $config,
+    'db_password' => $password,
+    'storages' => readStorages($storagePath),
+  );
+
+  $json = json_encode($bundle, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($json))
+  {
+    throw new RuntimeException('Migrationspaket konnte nicht erzeugt werden.');
+  }
+
+  if (file_put_contents($bundlePath, $json."\n", LOCK_EX) === false)
+  {
+    throw new RuntimeException('Migrationspaket konnte nicht geschrieben werden: '.$bundlePath);
+  }
+
+  @chmod($bundlePath, 0600);
+  if (!@chown($bundlePath, 'www-data'))
+  {
+    @unlink($bundlePath);
+    throw new RuntimeException('Migrationspaket konnte nicht sicher an www-data uebergeben werden.');
+  }
+  @chgrp($bundlePath, 'www-data');
+
+  echo "Migrationspaket wurde bereitgestellt.\n";
+  echo "Jetzt in Piwigo -> Bratonien Tools -> NC Connector wechseln und 'Bestehende Verbindung importieren' ausfuehren.\n";
+  echo "Der laufende piwigo-sync wurde nicht veraendert oder gestoppt.\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, 'Fehler: '.$e->getMessage()."\n");
+  exit(1);
+}

nc-connector-normalize.php

@@ -0,0 +1,149 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-normalize.php <connection-id>\n");
+  exit(1);
+}
+
+$id = (int)$argv[1];
+$pluginRoot = __DIR__;
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$configPath = '/etc/bratonien-tools/nc-connector/connection-'.$id.'.conf';
+$newState = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
+$servicePath = '/etc/systemd/system/bratonien-nc-connector.service';
+$timer = 'bratonien-nc-connector.timer';
+$service = 'bratonien-nc-connector.service';
+
+function normalize_run(array $command, $allowFailure = false)
+{
+  $spec = array(0=>array('file','/dev/null','r'), 1=>array('pipe','w'), 2=>array('pipe','w'));
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process)) throw new RuntimeException('Prozess konnte nicht gestartet werden.');
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]); fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    throw new RuntimeException('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit, 'stdout'=>$stdout, 'stderr'=>$stderr);
+}
+
+function remove_tree($path)
+{
+  if (!is_dir($path)) return;
+  $items = new RecursiveIteratorIterator(
+    new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS),
+    RecursiveIteratorIterator::CHILD_FIRST
+  );
+  foreach ($items as $item)
+  {
+    if ($item->isDir()) @rmdir($item->getPathname()); else @unlink($item->getPathname());
+  }
+  @rmdir($path);
+}
+
+try
+{
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  if (!is_readable($dbConfig)) throw new RuntimeException('Piwigo-Datenbankkonfiguration nicht lesbar.');
+  require $dbConfig;
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno) throw new RuntimeException('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  $db->set_charset('utf8mb4');
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT id, enabled, takeover_state, config_json FROM `".$table."` WHERE id=".$id." LIMIT 1");
+  if (!$result || !$result->num_rows) throw new RuntimeException('Connector-Verbindung #'.$id.' wurde nicht gefunden.');
+  $row = $result->fetch_assoc();
+  if ((int)$row['enabled'] !== 1 || (string)$row['takeover_state'] !== 'active') throw new RuntimeException('Die Verbindung muss aktiv sein.');
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config)) throw new RuntimeException('Connector-Konfiguration ist ungueltig.');
+  $oldState = rtrim((string)($config['state_dir'] ?? ''), '/');
+  if ($oldState === '') throw new RuntimeException('Bisheriger State-Pfad fehlt.');
+  if ($oldState === $newState)
+  {
+    echo "Verbindung #".$id." verwendet bereits den nativen State-Pfad.\n";
+    exit(0);
+  }
+  if (!is_readable($configPath)) throw new RuntimeException('Aktive Runtime-Konfiguration fehlt: '.$configPath);
+
+  echo "Stoppe Connector-Timer...\n";
+  normalize_run(array('systemctl','stop',$timer));
+  $deadline = time() + 120;
+  while (normalize_run(array('systemctl','is-active','--quiet',$service), true)['exit'] === 0)
+  {
+    if (time() >= $deadline) throw new RuntimeException('Laufender Connector-Lauf wurde nach 120 Sekunden nicht beendet.');
+    sleep(2);
+  }
+
+  if (!is_dir(dirname($newState)) && !mkdir(dirname($newState), 0750, true)) throw new RuntimeException('Neues State-Wurzelverzeichnis konnte nicht angelegt werden.');
+  if (!is_dir($newState) && !mkdir($newState, 0750, true)) throw new RuntimeException('Neues State-Verzeichnis konnte nicht angelegt werden.');
+  if (is_dir($oldState)) normalize_run(array('cp','-a',$oldState.'/.',$newState.'/'));
+  chmod($newState, 0750);
+
+  $originalConfig = file_get_contents($configPath);
+  if (!is_string($originalConfig)) throw new RuntimeException('Runtime-Konfiguration konnte nicht gelesen werden.');
+  $newStatus = $newState.'/connector-status.json';
+  $updatedConfig = preg_replace('/^STATE_DIR=.*$/m', 'STATE_DIR='.$newState, $originalConfig, 1);
+  $updatedConfig = preg_replace('/^STATUS_FILE=.*$/m', 'STATUS_FILE='.$newStatus, $updatedConfig, 1);
+  if (!is_string($updatedConfig) || $updatedConfig === $originalConfig) throw new RuntimeException('Runtime-Konfiguration konnte nicht auf nativen State umgestellt werden.');
+  file_put_contents($configPath, $updatedConfig, LOCK_EX);
+  chmod($configPath, 0600);
+
+  echo "Teste Plugin-Runtime mit neuem State...\n";
+  $test = normalize_run(array('env','PIWIGO_CONFIG='.$configPath,'bash',$pluginRoot.'/runtime/sync.sh'), true);
+  if ($test['exit'] !== 0)
+  {
+    file_put_contents($configPath, $originalConfig, LOCK_EX);
+    remove_tree($newState);
+    normalize_run(array('systemctl','start',$timer), true);
+    $detail = trim($test['stderr']) !== '' ? trim($test['stderr']) : trim($test['stdout']);
+    throw new RuntimeException('Normalisierung abgebrochen; alter Zustand wiederhergestellt'.($detail !== '' ? ': '.$detail : '.'));
+  }
+
+  $serviceContent = "[Unit]\nDescription=Bratonien NC Connector Sync\nAfter=network-online.target\nWants=network-online.target\n\n[Service]\nType=oneshot\nExecStart=/usr/bin/env bash ".$pluginRoot."/runtime/run-all.sh\n\n";
+  file_put_contents($servicePath, $serviceContent, LOCK_EX);
+  chmod($servicePath, 0644);
+
+  $config['state_dir'] = $newState;
+  $config['status_file'] = $newStatus;
+  $config['origin'] = 'native';
+  $config['runtime'] = array('mode'=>'plugin-runtime', 'config'=>$configPath);
+  if (isset($config['takeover']) && is_array($config['takeover'])) $config['takeover']['runtime'] = 'plugin-runtime';
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  $jsonEsc = $db->real_escape_string((string)$json);
+  $nowEsc = $db->real_escape_string(date('Y-m-d H:i:s'));
+  if (!$db->query("UPDATE `".$table."` SET config_json='".$jsonEsc."', updated='".$nowEsc."' WHERE id=".$id)) throw new RuntimeException('Connector-Datenbankstatus konnte nicht aktualisiert werden: '.$db->error);
+
+  normalize_run(array('systemctl','daemon-reload'));
+  normalize_run(array('systemctl','enable','--now',$timer));
+
+  if ($oldState !== '/var/lib' && $oldState !== '/' && strpos($oldState, '/var/lib/') === 0)
+  {
+    remove_tree($oldState);
+  }
+
+  echo "Normalisierung erfolgreich.\n";
+  echo "State: ".$newState."\n";
+  echo "Service: gemeinsamer Multi-Connection-Runner aus Bratonien Tools.\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, $e->getMessage()."\n");
+  exit(1);
+}

nc-connector-runtime-switch.php

@@ -0,0 +1,226 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+if ($argc !== 2 || !preg_match('/^[1-9][0-9]*$/', $argv[1]))
+{
+  fwrite(STDERR, "Aufruf: php nc-connector-runtime-switch.php <connection-id>\n");
+  exit(1);
+}
+
+$connectionId = (int)$argv[1];
+$piwigoRoot = dirname(__DIR__, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$pluginRuntime = __DIR__.'/runtime/sync.sh';
+$configPath = '/etc/bratonien-tools/nc-connector/connection-'.$connectionId.'.conf';
+$serviceName = 'bratonien-nc-connector.service';
+$timerName = 'bratonien-nc-connector.timer';
+$servicePath = '/etc/systemd/system/'.$serviceName;
+
+function failRuntimeSwitch($message)
+{
+  throw new RuntimeException($message);
+}
+
+function runRuntimeSwitch(array $command, $allowFailure = false)
+{
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $process = proc_open($command, $spec, $pipes);
+  if (!is_resource($process))
+  {
+    failRuntimeSwitch('Prozess konnte nicht gestartet werden: '.implode(' ', $command));
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  $stderr = stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  if ($exit !== 0 && !$allowFailure)
+  {
+    $detail = trim($stderr) !== '' ? trim($stderr) : trim($stdout);
+    failRuntimeSwitch('Befehl fehlgeschlagen ('.$exit.'): '.implode(' ', $command).($detail !== '' ? "\n".$detail : ''));
+  }
+  return array('exit'=>$exit, 'stdout'=>(string)$stdout, 'stderr'=>(string)$stderr);
+}
+
+function parseRuntimeConfig($path)
+{
+  if (!is_readable($path))
+  {
+    failRuntimeSwitch('Connector-Konfiguration nicht lesbar: '.$path);
+  }
+  $result = array();
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    if (preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches))
+    {
+      $result[$matches[1]] = trim($matches[2]);
+    }
+  }
+  return $result;
+}
+
+function dbEscapeRuntime(mysqli $db, $value)
+{
+  return $db->real_escape_string((string)$value);
+}
+
+$oldService = null;
+$db = null;
+$table = '';
+$config = array();
+$timerStopped = false;
+
+try
+{
+  if (!is_file($pluginRuntime) || !is_readable($pluginRuntime))
+  {
+    failRuntimeSwitch('Plugin-Runtime fehlt: '.$pluginRuntime);
+  }
+  if (!is_readable($dbConfig))
+  {
+    failRuntimeSwitch('Piwigo-Datenbankkonfiguration nicht lesbar.');
+  }
+  if (!is_readable($servicePath))
+  {
+    failRuntimeSwitch('Bestehender Connector-Service wurde nicht gefunden: '.$servicePath);
+  }
+
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  require $dbConfig;
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno)
+  {
+    failRuntimeSwitch('Piwigo-Datenbank nicht erreichbar: '.$db->connect_error);
+  }
+  $db->set_charset('utf8mb4');
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $result = $db->query("SELECT takeover_state, enabled, config_json FROM `".$table."` WHERE id=".$connectionId." LIMIT 1");
+  if (!$result || !$result->num_rows)
+  {
+    failRuntimeSwitch('Connector-Verbindung #'.$connectionId.' wurde nicht gefunden.');
+  }
+  $row = $result->fetch_assoc();
+  if ((string)$row['takeover_state'] !== 'active' || (int)$row['enabled'] !== 1)
+  {
+    failRuntimeSwitch('Runtime-Switch ist nur fuer eine aktive Connector-Verbindung erlaubt.');
+  }
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config))
+  {
+    failRuntimeSwitch('Connector-Konfiguration ist ungueltig.');
+  }
+
+  $runtimeConfig = parseRuntimeConfig($configPath);
+  $statusPath = isset($runtimeConfig['STATUS_FILE']) ? (string)$runtimeConfig['STATUS_FILE'] : '';
+  if ($statusPath === '')
+  {
+    failRuntimeSwitch('STATUS_FILE fehlt in der Connector-Konfiguration.');
+  }
+
+  $oldService = file_get_contents($servicePath);
+  if (!is_string($oldService) || $oldService === '')
+  {
+    failRuntimeSwitch('Bestehende Service-Definition konnte nicht gesichert werden.');
+  }
+
+  echo "Stoppe Connector-Timer fuer den Runtime-Test...\n";
+  runRuntimeSwitch(array('systemctl', 'stop', $timerName));
+  $timerStopped = true;
+
+  $deadline = time() + 120;
+  do
+  {
+    $active = runRuntimeSwitch(array('systemctl', 'is-active', '--quiet', $serviceName), true);
+    if ($active['exit'] !== 0)
+    {
+      break;
+    }
+    if (time() >= $deadline)
+    {
+      failRuntimeSwitch('Ein laufender Connector-Sync wurde nach 120 Sekunden nicht beendet.');
+    }
+    sleep(2);
+  }
+  while (true);
+
+  @unlink($statusPath);
+  echo "Teste Plugin-eigene Sync-Runtime...\n";
+  $test = runRuntimeSwitch(array('env', 'PIWIGO_CONFIG='.$configPath, '/bin/bash', $pluginRuntime), true);
+  if ($test['exit'] !== 0)
+  {
+    $detail = trim($test['stderr']) !== '' ? trim($test['stderr']) : trim($test['stdout']);
+    failRuntimeSwitch('Plugin-Runtime-Test fehlgeschlagen'.($detail !== '' ? ': '.$detail : '.'));
+  }
+
+  $status = is_readable($statusPath) ? json_decode((string)file_get_contents($statusPath), true) : null;
+  $state = is_array($status) ? trim((string)($status['state'] ?? '')) : '';
+  $message = is_array($status) ? trim((string)($status['message'] ?? '')) : '';
+  if ($state === 'error')
+  {
+    failRuntimeSwitch('Plugin-Runtime meldete einen Fehler'.($message !== '' ? ': '.$message : '.'));
+  }
+
+  echo 'Runtime-Test erfolgreich: '.($message !== '' ? $message : 'Exit-Code 0')."\n";
+
+  $service = "[Unit]\nDescription=Bratonien NC Connector Sync\nAfter=network-online.target\nWants=network-online.target\n\n[Service]\nType=oneshot\nEnvironment=PIWIGO_CONFIG=".$configPath."\nExecStart=/bin/bash ".$pluginRuntime."\n\n";
+  if (file_put_contents($servicePath, $service, LOCK_EX) === false)
+  {
+    failRuntimeSwitch('Neue Service-Definition konnte nicht geschrieben werden.');
+  }
+  chmod($servicePath, 0644);
+  runRuntimeSwitch(array('systemctl', 'daemon-reload'));
+  runRuntimeSwitch(array('systemctl', 'enable', '--now', $timerName));
+  $timerStopped = false;
+
+  $config['takeover']['runtime'] = 'plugin-runtime';
+  $config['takeover']['runtime_switched_at'] = date('Y-m-d H:i:s');
+  $config['takeover']['runtime_path'] = $pluginRuntime;
+  $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($json))
+  {
+    failRuntimeSwitch('Connector-Status konnte nicht serialisiert werden.');
+  }
+  $now = date('Y-m-d H:i:s');
+  $sql = "UPDATE `".$table."` SET config_json='".dbEscapeRuntime($db, $json)."', updated='".dbEscapeRuntime($db, $now)."' WHERE id=".$connectionId;
+  if (!$db->query($sql))
+  {
+    failRuntimeSwitch('Connector-Status konnte nicht aktualisiert werden: '.$db->error);
+  }
+
+  echo "Runtime-Switch erfolgreich.\n";
+  echo "Der Connector verwendet jetzt ausschliesslich die Plugin-eigene Sync-Runtime.\n";
+}
+catch (Throwable $e)
+{
+  if (is_string($oldService) && $oldService !== '')
+  {
+    @file_put_contents($servicePath, $oldService, LOCK_EX);
+    runRuntimeSwitch(array('systemctl', 'daemon-reload'), true);
+  }
+  if ($timerStopped)
+  {
+    runRuntimeSwitch(array('systemctl', 'enable', '--now', $timerName), true);
+  }
+  fwrite(STDERR, "Runtime-Switch fehlgeschlagen: ".$e->getMessage()."\n");
+  fwrite(STDERR, "Die bisherige Connector-Runtime wurde beibehalten/wiederhergestellt.\n");
+  exit(1);
+}

nc-connector-status.php

@@ -36,6 +36,11 @@ $latest = array(
   'api'=>array('state'=>'not_run','message'=>''),
   'fallback'=>array('state'=>'not_run','message'=>''),
   'error_detail'=>'',
+  'route'=>'',
+  'route_label'=>'Noch kein Datenweg erfasst',
+  'route_timestamp'=>0,
+  'route_time_label'=>'Nicht verfügbar',
+  'route_detail'=>'',
 );
 
 if (is_dir($dir))
@@ -57,6 +62,54 @@ if (is_dir($dir))
       $latest['connection_file'] = basename($file);
     }
   }
+
+  $route_file = $dir.'/route-status.json';
+  if (is_readable($route_file))
+  {
+    $route = json_decode((string)@file_get_contents($route_file), true);
+    if (is_array($route))
+    {
+      $route_name = (string)($route['route'] ?? '');
+      $route_timestamp = (int)($route['timestamp'] ?? 0);
+      $route_label = (string)($route['label'] ?? '');
+
+      if ($route_name === 'webdav')
+      {
+        $route_label = 'WEBDAV PRIMÄR';
+      }
+      elseif ($route_name === 'legacy_fallback')
+      {
+        $route_label = 'LEGACY-FALLBACK AKTIV';
+      }
+      elseif ($route_name === 'failed')
+      {
+        $route_label = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
+      }
+      elseif ($route_label === '')
+      {
+        $route_label = 'UNBEKANNTER DATENWEG';
+      }
+
+      $route_detail = trim((string)($route['detail'] ?? ''));
+      $latest['route'] = $route_name;
+      $latest['route_label'] = $route_label;
+      $latest['route_timestamp'] = $route_timestamp;
+      $latest['route_time_label'] = $route_timestamp > 0 ? date('d.m.Y H:i:s', $route_timestamp) : 'Nicht verfügbar';
+      $latest['route_detail'] = $route_detail;
+
+      $base_message = trim((string)($latest['message'] ?? ''));
+      $message_parts = array($route_label);
+      if ($route_name !== 'webdav' && $route_detail !== '')
+      {
+        $message_parts[] = $route_detail;
+      }
+      if ($base_message !== '')
+      {
+        $message_parts[] = $base_message;
+      }
+      $latest['message'] = implode(' · ', $message_parts);
+    }
+  }
 }
 
 if ((int)$latest['timestamp'] > 0)

runtime/cleanup-stale.php

@@ -0,0 +1,86 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "CLI only\n");
+  exit(1);
+}
+
+$pluginRoot = dirname(__DIR__);
+$piwigoRoot = dirname($pluginRoot, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$configDir = '/etc/bratonien-tools/nc-connector';
+$stateRoot = '/var/lib/bratonien-tools/nc-connector';
+
+function cleanup_fail($message)
+{
+  fwrite(STDERR, $message."\n");
+  exit(1);
+}
+
+function cleanup_tree($path)
+{
+  $path = rtrim((string)$path, '/');
+  if ($path === '' || $path === '/' || !file_exists($path)) return;
+  if (is_link($path) || is_file($path))
+  {
+    @unlink($path);
+    return;
+  }
+  $items = @scandir($path);
+  if (!is_array($items)) return;
+  foreach ($items as $item)
+  {
+    if ($item === '.' || $item === '..') continue;
+    cleanup_tree($path.'/'.$item);
+  }
+  @rmdir($path);
+}
+
+if (!is_readable($dbConfig)) cleanup_fail('Piwigo-Datenbankkonfiguration ist nicht lesbar.');
+$conf = array();
+$prefixeTable = 'piwigo_';
+require $dbConfig;
+foreach (array('db_host','db_user','db_password','db_base') as $key)
+{
+  if (!isset($conf[$key])) cleanup_fail('Piwigo-Datenbankkonfiguration ist unvollstaendig: '.$key);
+}
+
+$db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+if ($db->connect_errno) cleanup_fail('Piwigo-Datenbank ist nicht erreichbar: '.$db->connect_error);
+$db->set_charset('utf8mb4');
+
+$table = $prefixeTable.'bratonien_tools_nc_connections';
+$escapedTable = $db->real_escape_string($table);
+$exists = $db->query("SHOW TABLES LIKE '{$escapedTable}'");
+if (!$exists) cleanup_fail('Connector-Tabelle konnte nicht geprüft werden: '.$db->error);
+if ($exists->num_rows === 0) exit(0);
+
+$activeIds = array();
+$result = $db->query("SELECT id FROM `{$table}`");
+if (!$result) cleanup_fail('Connector-Verbindungen konnten nicht gelesen werden: '.$db->error);
+while ($row = $result->fetch_assoc())
+{
+  $activeIds[(int)$row['id']] = true;
+}
+
+if (!is_dir($configDir)) exit(0);
+foreach (glob($configDir.'/connection-*.conf') ?: array() as $configPath)
+{
+  if (!preg_match('/connection-([0-9]+)\.conf$/', $configPath, $matches)) continue;
+  $id = (int)$matches[1];
+  if (isset($activeIds[$id])) continue;
+
+  echo "NC Connector: entferne verwaiste Laufzeitdateien fuer Verbindung {$id}.\n";
+  foreach (array('.conf','.db-password','.piwigo-password','.storages.tsv','.roots.tsv') as $suffix)
+  {
+    @unlink($configDir.'/connection-'.$id.$suffix);
+  }
+  cleanup_tree($stateRoot.'/connection-'.$id);
+
+  $statusDir = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-status';
+  @unlink($statusDir.'/connection-'.$id.'.json');
+  @unlink($statusDir.'/deleted-'.$id);
+}
+
+exit(0);

runtime/lib/activity_gate.py

@@ -0,0 +1,140 @@
+#!/usr/bin/env python3
+"""Debounce Nextcloud activity for one connector scope."""
+
+from __future__ import annotations
+
+import argparse
+import hashlib
+import json
+import os
+import re
+import subprocess
+import sys
+import tempfile
+import time
+from pathlib import Path
+
+IDENTIFIER = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*(?:\.[A-Za-z_][A-Za-z0-9_]*)?$")
+
+
+def validate_view(name: str) -> str:
+    value = str(name).strip()
+    if not IDENTIFIER.fullmatch(value):
+        raise ValueError(f"invalid SQL view name: {value!r}")
+    return value
+
+
+def sql_literal(value: str) -> str:
+    return "'" + str(value).replace("'", "''") + "'"
+
+
+def load(path: Path) -> dict[str, object]:
+    defaults: dict[str, object] = {
+        "processed": 0, "observed": 0, "pending_since": 0,
+        "last_change": 0, "last_full": 0, "source_signature": "",
+    }
+    if not path.exists():
+        return defaults
+    data = json.loads(path.read_text(encoding="utf-8"))
+    return {
+        "processed": int(data.get("processed", 0)),
+        "observed": int(data.get("observed", 0)),
+        "pending_since": int(data.get("pending_since", 0)),
+        "last_change": int(data.get("last_change", 0)),
+        "last_full": int(data.get("last_full", 0)),
+        "source_signature": str(data.get("source_signature", "")),
+    }
+
+
+def save(path: Path, state: dict[str, object]) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    fd, name = tempfile.mkstemp(dir=path.parent)
+    with os.fdopen(fd, "w", encoding="utf-8") as handle:
+        json.dump(state, handle, sort_keys=True)
+        handle.write("\n")
+    Path(name).replace(path)
+
+
+def query(args: argparse.Namespace, sql: str) -> str:
+    env = os.environ.copy()
+    env["PGPASSWORD"] = args.password_file.read_text(encoding="utf-8").strip()
+    command = [
+        "psql", "-XAt", "-h", args.host, "-p", str(args.port),
+        "-U", args.user, "-d", args.database, "-v", "ON_ERROR_STOP=1", "-c", sql,
+    ]
+    return subprocess.run(command, env=env, check=True, text=True, capture_output=True).stdout
+
+
+def user_where(args: argparse.Namespace) -> str:
+    if not args.access_user:
+        return ""
+    return " WHERE lower(access_user) = lower(" + sql_literal(args.access_user) + ")"
+
+
+def latest(args: argparse.Namespace) -> int:
+    view = validate_view(args.view)
+    return int(query(args, f"SELECT COALESCE(MAX(activity_id), 0) FROM {view}{user_where(args)}").strip())
+
+
+def source_signature(args: argparse.Namespace) -> str:
+    if args.roots_config:
+        return hashlib.sha256(args.roots_config.read_bytes()).hexdigest()
+    if not args.source_view:
+        return ""
+    view = validate_view(args.source_view)
+    payload = query(args, f"SELECT share_id, display_name, storage_id, source_path FROM {view}{user_where(args)} ORDER BY share_id")
+    return hashlib.sha256(payload.encode("utf-8")).hexdigest()
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument("action", choices=("check", "commit"))
+    parser.add_argument("--state", required=True, type=Path)
+    parser.add_argument("--host", required=True)
+    parser.add_argument("--port", type=int, default=5432)
+    parser.add_argument("--database", required=True)
+    parser.add_argument("--user", required=True)
+    parser.add_argument("--password-file", required=True, type=Path)
+    parser.add_argument("--view", required=True)
+    parser.add_argument("--source-view", default="")
+    parser.add_argument("--roots-config", type=Path)
+    parser.add_argument("--access-user", default="")
+    parser.add_argument("--quiet", type=int, default=120)
+    parser.add_argument("--max-wait", type=int, default=900)
+    parser.add_argument("--full-after", type=int, default=86400)
+    args = parser.parse_args()
+    try:
+        validate_view(args.view)
+        if args.source_view:
+            validate_view(args.source_view)
+        state = load(args.state)
+        now = int(time.time())
+        current = latest(args)
+        current_source = source_signature(args)
+        if args.action == "commit":
+            state.update(processed=current, observed=current, pending_since=0, last_change=0, last_full=now, source_signature=current_source)
+            save(args.state, state)
+            return 0
+        if not int(state["last_full"]):
+            return 0
+        if current_source and current_source != str(state["source_signature"]):
+            return 0
+        if current > int(state["observed"]):
+            state["observed"] = current
+            state["last_change"] = now
+            state["pending_since"] = int(state["pending_since"]) or now
+            save(args.state, state)
+        if now - int(state["last_full"]) >= args.full_after:
+            return 0
+        if int(state["observed"]) <= int(state["processed"]):
+            return 3
+        if now - int(state["last_change"]) >= args.quiet or now - int(state["pending_since"]) >= args.max_wait:
+            return 0
+        return 3
+    except Exception as error:
+        print(f"activity-gate: {error}", file=sys.stderr)
+        return 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

runtime/lib/build_manifest.py

@@ -0,0 +1,216 @@
+#!/usr/bin/env python3
+"""Resolve Nextcloud share rows through configured storage adapters."""
+
+from __future__ import annotations
+
+import argparse
+import csv
+import json
+import os
+import re
+import subprocess
+import sys
+import tempfile
+from pathlib import Path, PurePosixPath
+
+IDENTIFIER = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*(?:\.[A-Za-z_][A-Za-z0-9_]*)?$")
+
+
+def validate_view(name: str) -> str:
+    value = str(name).strip()
+    if not IDENTIFIER.fullmatch(value):
+        raise ValueError(f"invalid SQL view name: {value!r}")
+    return value
+
+
+def sql_literal(value: str) -> str:
+    return "'" + str(value).replace("'", "''") + "'"
+
+
+def read_config(path: Path) -> dict[str, list[tuple[str, Path, str]]]:
+    result: dict[str, list[tuple[str, Path, str]]] = {}
+    with path.open(encoding="utf-8") as handle:
+        for number, line in enumerate(handle, 1):
+            line = line.rstrip("\n")
+            if not line or line.startswith("#"):
+                continue
+            fields = line.split("\t")
+            if len(fields) not in {3, 4}:
+                raise ValueError(f"{path}:{number}: expected storage_id, source_prefix, local_mount and optional include_prefix")
+            storage_id, prefix, mount = fields[:3]
+            include_prefix = fields[3] if len(fields) == 4 else ""
+            storage_id = storage_id.strip()
+            prefix = prefix.strip("/")
+            include_prefix = include_prefix.strip("/")
+            if not storage_id:
+                raise ValueError(f"{path}:{number}: storage_id is empty")
+            if ".." in PurePosixPath(prefix).parts or ".." in PurePosixPath(include_prefix).parts:
+                raise ValueError(f"{path}:{number}: unsafe prefix")
+            result.setdefault(storage_id, []).append((prefix, Path(mount), include_prefix))
+    return result
+
+
+def run_query(args: argparse.Namespace, env: dict[str, str], sql: str) -> subprocess.CompletedProcess[str]:
+    command = [
+        "psql", "-X", "-A", "-F", "\t", "-t", "-v", "ON_ERROR_STOP=1",
+        "-h", args.host, "-p", str(args.port), "-U", args.user, "-d", args.database, "-c", sql,
+    ]
+    return subprocess.run(command, env=env, check=False, text=True, capture_output=True)
+
+
+def query_rows(args: argparse.Namespace) -> list[list[str]]:
+    password = args.password_file.read_text(encoding="utf-8").strip()
+    env = os.environ.copy()
+    env["PGPASSWORD"] = password
+    view = validate_view(args.view)
+    where = ""
+    if args.access_user:
+        where = " WHERE lower(access_user) = lower(" + sql_literal(args.access_user) + ")"
+    modern_sql = f"SELECT share_id, item_type, display_name, storage_id, source_path FROM {view}{where} ORDER BY share_id"
+    completed = run_query(args, env, modern_sql)
+    if completed.returncode == 0:
+        return list(csv.reader(completed.stdout.splitlines(), delimiter="\t"))
+    if args.access_user:
+        raise RuntimeError(completed.stderr.strip() or "Nextcloud user-filtered source query failed")
+    if "item_type" not in completed.stderr or "does not exist" not in completed.stderr:
+        raise RuntimeError(completed.stderr.strip() or "Nextcloud source view query failed")
+    legacy_sql = f"SELECT share_id, display_name, storage_id, source_path FROM {view} ORDER BY share_id"
+    completed = run_query(args, env, legacy_sql)
+    if completed.returncode != 0:
+        raise RuntimeError(completed.stderr.strip() or "legacy Nextcloud source view query failed")
+    rows: list[list[str]] = []
+    for row in csv.reader(completed.stdout.splitlines(), delimiter="\t"):
+        if len(row) == 4:
+            share_id, display_name, storage_id, source_path = row
+            rows.append([share_id, "", display_name, storage_id, source_path])
+        else:
+            rows.append(row)
+    return rows
+
+
+def contained_join(root: Path, relative: str) -> Path:
+    parts = PurePosixPath(relative).parts
+    if relative.startswith("/") or ".." in parts:
+        raise ValueError(f"unsafe source path: {relative}")
+    return root.joinpath(*parts)
+
+
+def matches_prefix(path: str, prefix: str) -> bool:
+    return not prefix or path == prefix or path.startswith(prefix + "/")
+
+
+def resolve_adapter(adapters: dict[str, list[tuple[str, Path, str]]], storage_id: str, source_path: str) -> tuple[str, Path, str] | None:
+    relative = source_path.strip("/")
+    matches: list[tuple[str, Path, str]] = []
+    for prefix, mount, include_prefix in adapters.get(storage_id, []):
+        if not matches_prefix(relative, prefix):
+            continue
+        mapped_relative = relative[len(prefix):].lstrip("/") if prefix else relative
+        if not matches_prefix(mapped_relative, include_prefix):
+            continue
+        matches.append((prefix, mount, include_prefix))
+    if not matches:
+        return None
+    matches.sort(key=lambda item: (len(item[0]), len(item[2])), reverse=True)
+    best_score = (len(matches[0][0]), len(matches[0][2]))
+    best = {(item[0], str(item[1]), item[2]): item for item in matches if (len(item[0]), len(item[2])) == best_score}
+    if len(best) != 1:
+        raise RuntimeError(f"storage adapter is ambiguous for {storage_id}")
+    return next(iter(best.values()))
+
+
+def build(args: argparse.Namespace) -> dict[str, object]:
+    validate_view(args.view)
+    adapters = read_config(args.storage_config)
+    rows = query_rows(args)
+    if not rows and not args.allow_empty:
+        raise RuntimeError("Nextcloud returned no matching sources; refusing an empty manifest")
+    manifest: list[str] = []
+    errors: list[str] = []
+    folder_count = 0
+    file_count = 0
+    for row in rows:
+        if len(row) != 5:
+            errors.append(f"invalid database row with {len(row)} columns")
+            continue
+        share_id, item_type, display_name, storage_id, source_path = row
+        item_type = item_type.strip().lower()
+        relative = source_path.strip("/")
+        if item_type and item_type not in {"folder", "file"}:
+            errors.append(f"source {share_id}: unsupported item_type {item_type!r}")
+            continue
+        try:
+            adapter = resolve_adapter(adapters, storage_id, relative)
+        except RuntimeError as error:
+            errors.append(f"source {share_id}: {error}")
+            continue
+        if not adapter:
+            continue
+        prefix, mount, _include_prefix = adapter
+        if prefix:
+            relative = relative[len(prefix):].lstrip("/")
+        source = contained_join(mount, relative)
+        if not mount.is_mount():
+            errors.append(f"source {share_id}: storage mount unavailable: {mount}")
+            continue
+        if not item_type:
+            if source.is_dir():
+                item_type = "folder"
+            elif source.is_file():
+                item_type = "file"
+            else:
+                errors.append(f"source {share_id}: source unavailable: {source}")
+                continue
+        if item_type == "folder":
+            if not source.is_dir():
+                errors.append(f"source {share_id}: source directory unavailable: {source}")
+                continue
+            folder_count += 1
+        else:
+            if not source.is_file():
+                errors.append(f"source {share_id}: source file unavailable: {source}")
+                continue
+            file_count += 1
+        if any(char in display_name for char in ("\t", "\n", "\r")):
+            errors.append(f"source {share_id}: display name contains unsupported control characters")
+            continue
+        source_text = str(source)
+        if any(char in source_text for char in ("\t", "\n", "\r")):
+            errors.append(f"source {share_id}: source path contains unsupported control characters")
+            continue
+        manifest.append(f"{share_id}\t{item_type}\t{display_name.lstrip('/')}\t{source}")
+    if errors:
+        raise RuntimeError("; ".join(errors))
+    if not manifest and rows and not args.allow_empty:
+        raise RuntimeError("no Nextcloud sources match the configured storage adapters")
+    args.output.parent.mkdir(parents=True, exist_ok=True)
+    with tempfile.NamedTemporaryFile("w", encoding="utf-8", dir=args.output.parent, delete=False) as handle:
+        handle.write("\n".join(manifest) + ("\n" if manifest else ""))
+        temporary = Path(handle.name)
+    temporary.replace(args.output)
+    return {"sources": len(manifest), "folders": folder_count, "files": file_count, "manifest": str(args.output)}
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--host", required=True)
+    parser.add_argument("--port", type=int, default=5432)
+    parser.add_argument("--database", required=True)
+    parser.add_argument("--user", required=True)
+    parser.add_argument("--password-file", required=True, type=Path)
+    parser.add_argument("--view", required=True)
+    parser.add_argument("--access-user", default="")
+    parser.add_argument("--storage-config", required=True, type=Path)
+    parser.add_argument("--output", required=True, type=Path)
+    parser.add_argument("--allow-empty", action="store_true")
+    args = parser.parse_args()
+    try:
+        print(json.dumps(build(args), ensure_ascii=False))
+    except Exception as error:
+        print(f"manifest: {error}", file=sys.stderr)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

runtime/lib/build_selected_manifest.py

@@ -0,0 +1,191 @@
+#!/usr/bin/env python3
+"""Build a manifest from WebDAV-authorized Nextcloud file IDs.
+
+The selected roots are resolved through a generic Nextcloud file view and then
+mapped through configured storage adapters. No user name, path layout or storage
+protocol is assumed here.
+"""
+
+from __future__ import annotations
+
+import argparse
+import csv
+import json
+import os
+import re
+import subprocess
+import sys
+import tempfile
+from pathlib import Path, PurePosixPath
+
+IDENTIFIER = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*(?:\.[A-Za-z_][A-Za-z0-9_]*)?$")
+
+
+def validate_view(name: str) -> str:
+    value = str(name).strip()
+    if not IDENTIFIER.fullmatch(value):
+        raise ValueError(f"invalid SQL view name: {value!r}")
+    return value
+
+
+def safe_relative(value: str) -> str:
+    value = str(value).strip("/")
+    if ".." in PurePosixPath(value).parts:
+        raise ValueError(f"unsafe relative path: {value!r}")
+    return value
+
+
+def read_roots(path: Path) -> dict[int, str]:
+    roots: dict[int, str] = {}
+    with path.open(encoding="utf-8") as handle:
+        for number, raw in enumerate(handle, 1):
+            line = raw.rstrip("\n")
+            if not line or line.startswith("#"):
+                continue
+            fields = line.split("\t")
+            if len(fields) != 2:
+                raise ValueError(f"{path}:{number}: expected fileid and display_name")
+            fileid_text, display_name = fields
+            if not fileid_text.isdigit() or int(fileid_text) < 1:
+                raise ValueError(f"{path}:{number}: invalid fileid")
+            if any(char in display_name for char in ("\t", "\n", "\r")):
+                raise ValueError(f"{path}:{number}: invalid display name")
+            roots[int(fileid_text)] = display_name or f"Element_{fileid_text}"
+    if not roots:
+        raise ValueError("no selected Nextcloud roots configured")
+    return roots
+
+
+def read_adapters(path: Path) -> dict[str, list[tuple[str, Path]]]:
+    result: dict[str, list[tuple[str, Path]]] = {}
+    with path.open(encoding="utf-8") as handle:
+        for number, raw in enumerate(handle, 1):
+            line = raw.rstrip("\n")
+            if not line or line.startswith("#"):
+                continue
+            fields = line.split("\t")
+            if len(fields) not in {3, 4}:
+                raise ValueError(f"{path}:{number}: expected storage_id, source_prefix, local_mount and optional include_prefix")
+            storage_id, source_prefix, local_mount = fields[:3]
+            storage_id = storage_id.strip()
+            source_prefix = safe_relative(source_prefix)
+            mount = Path(local_mount)
+            if not storage_id:
+                raise ValueError(f"{path}:{number}: empty storage_id")
+            if not mount.is_absolute():
+                raise ValueError(f"{path}:{number}: local_mount must be absolute")
+            result.setdefault(storage_id, []).append((source_prefix, mount))
+    if not result:
+        raise ValueError("no storage adapters configured")
+    return result
+
+
+def matches_prefix(path: str, prefix: str) -> bool:
+    return not prefix or path == prefix or path.startswith(prefix + "/")
+
+
+def resolve_adapter(adapters: dict[str, list[tuple[str, Path]]], storage_id: str, source_path: str) -> tuple[str, Path]:
+    relative = safe_relative(source_path)
+    matches = [(prefix, mount) for prefix, mount in adapters.get(storage_id, []) if matches_prefix(relative, prefix)]
+    if not matches:
+        raise RuntimeError(f"no storage adapter configured for {storage_id}")
+    matches.sort(key=lambda item: len(item[0]), reverse=True)
+    best_length = len(matches[0][0])
+    best = {(prefix, str(mount)): (prefix, mount) for prefix, mount in matches if len(prefix) == best_length}
+    if len(best) != 1:
+        raise RuntimeError(f"storage adapter is ambiguous for {storage_id}")
+    return next(iter(best.values()))
+
+
+def query_rows(args: argparse.Namespace, roots: dict[int, str]) -> dict[int, tuple[str, str]]:
+    password = args.password_file.read_text(encoding="utf-8").strip()
+    env = os.environ.copy()
+    env["PGPASSWORD"] = password
+    ids = ",".join(str(fileid) for fileid in sorted(roots))
+    view = validate_view(args.view)
+    sql = f"SELECT fileid, storage_id, source_path FROM {view} WHERE fileid IN ({ids}) ORDER BY fileid"
+    command = [
+        "psql", "-X", "-A", "-F", "\t", "-t", "-v", "ON_ERROR_STOP=1",
+        "-h", args.host, "-p", str(args.port), "-U", args.user, "-d", args.database, "-c", sql,
+    ]
+    completed = subprocess.run(command, env=env, check=False, text=True, capture_output=True)
+    if completed.returncode != 0:
+        raise RuntimeError(completed.stderr.strip() or "Nextcloud file view query failed")
+    result: dict[int, tuple[str, str]] = {}
+    for row in csv.reader(completed.stdout.splitlines(), delimiter="\t"):
+        if len(row) != 3 or not row[0].isdigit():
+            raise RuntimeError("invalid row returned by Nextcloud file view")
+        result[int(row[0])] = (row[1], row[2])
+    missing = sorted(set(roots) - set(result))
+    if missing:
+        raise RuntimeError("selected Nextcloud file IDs are no longer resolvable: " + ", ".join(map(str, missing)))
+    return result
+
+
+def contained_join(root: Path, relative: str) -> Path:
+    relative = safe_relative(relative)
+    candidate = root.joinpath(*PurePosixPath(relative).parts) if relative else root
+    root_real = root.resolve()
+    candidate_real = candidate.resolve()
+    try:
+        candidate_real.relative_to(root_real)
+    except ValueError as error:
+        raise ValueError(f"resolved source escapes configured mount: {candidate}") from error
+    return candidate
+
+
+def build(args: argparse.Namespace) -> dict[str, object]:
+    roots = read_roots(args.roots_config)
+    adapters = read_adapters(args.storage_config)
+    rows = query_rows(args, roots)
+    manifest: list[str] = []
+
+    for fileid, display_name in roots.items():
+        storage_id, source_path = rows[fileid]
+        prefix, mount = resolve_adapter(adapters, storage_id, source_path)
+        if not mount.is_mount():
+            raise RuntimeError(f"storage mount unavailable: {mount}")
+        relative = safe_relative(source_path)
+        if prefix:
+            relative = relative[len(prefix):].lstrip("/")
+        source = contained_join(mount, relative)
+        if source.is_dir():
+            item_type = "folder"
+        elif source.is_file():
+            item_type = "file"
+        else:
+            raise RuntimeError(f"selected source unavailable: {source}")
+        if any(char in str(source) for char in ("\t", "\n", "\r")):
+            raise ValueError("resolved source path contains unsupported control characters")
+        manifest.append(f"fileid:{fileid}\t{item_type}\t{display_name}\t{source}")
+
+    args.output.parent.mkdir(parents=True, exist_ok=True)
+    with tempfile.NamedTemporaryFile("w", encoding="utf-8", dir=args.output.parent, delete=False) as handle:
+        handle.write("\n".join(manifest) + "\n")
+        temporary = Path(handle.name)
+    temporary.replace(args.output)
+    return {"roots": len(manifest), "manifest": str(args.output)}
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--host", required=True)
+    parser.add_argument("--port", type=int, default=5432)
+    parser.add_argument("--database", required=True)
+    parser.add_argument("--user", required=True)
+    parser.add_argument("--password-file", required=True, type=Path)
+    parser.add_argument("--view", required=True)
+    parser.add_argument("--storage-config", required=True, type=Path)
+    parser.add_argument("--roots-config", required=True, type=Path)
+    parser.add_argument("--output", required=True, type=Path)
+    args = parser.parse_args()
+    try:
+        print(json.dumps(build(args), ensure_ascii=False))
+    except Exception as error:
+        print(f"selected-manifest: {error}", file=sys.stderr)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

runtime/lib/piwigo-db-check.php

@@ -0,0 +1,53 @@
+<?php
+declare(strict_types=1);
+
+if ($argc !== 3) {
+    fwrite(STDERR, "Usage: piwigo-db-check.php MAP_FILE PIWIGO_ROOT\n");
+    exit(2);
+}
+
+$mapFile = $argv[1];
+$piwigoRoot = rtrim($argv[2], '/') . '/';
+$databaseConfig = $piwigoRoot . 'local/config/database.inc.php';
+
+if (!is_file($databaseConfig)) {
+    exit(1);
+}
+
+$mapping = json_decode((string) file_get_contents($mapFile), true, 512, JSON_THROW_ON_ERROR);
+$expected = [];
+foreach ($mapping as $source => $target) {
+    if (str_starts_with((string) $source, 'share:') && !str_contains((string) $source, '/')) {
+        $expected[] = basename((string) $target);
+    }
+}
+if ($expected === []) {
+    exit(1);
+}
+
+$conf = [];
+$prefixeTable = '';
+require $databaseConfig;
+
+$database = new mysqli(
+    (string) $conf['db_host'],
+    (string) $conf['db_user'],
+    (string) $conf['db_password'],
+    (string) $conf['db_base']
+);
+$database->set_charset('utf8mb4');
+$table = $database->real_escape_string((string) $prefixeTable) . 'categories';
+$result = $database->query(
+    'SELECT dir FROM `' . $table . '` WHERE site_id = 1 AND dir IS NOT NULL'
+);
+$existing = [];
+while ($row = $result->fetch_assoc()) {
+    $existing[(string) $row['dir']] = true;
+}
+
+foreach ($expected as $directory) {
+    if (!isset($existing[$directory])) {
+        exit(1);
+    }
+}
+exit(0);

runtime/lib/piwigo-db-sync.pl

@@ -0,0 +1,83 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use JSON::PP qw(decode_json);
+use LWP::UserAgent;
+use Getopt::Long;
+
+my %opt;
+GetOptions(
+    \%opt,
+    'base-url=s',
+    'username=s',
+    'password-file=s',
+) or die "Ungültige Parameter\n";
+
+for my $required (qw(base-url username password-file)) {
+    die "Parameter --$required fehlt\n" if !defined $opt{$required} || $opt{$required} eq '';
+}
+
+open my $password_handle, '<', $opt{'password-file'}
+    or die "Passwortdatei kann nicht gelesen werden: $!\n";
+my $password = <$password_handle>;
+close $password_handle;
+defined $password or die "Passwortdatei ist leer\n";
+chomp $password;
+
+my $ua = LWP::UserAgent->new(timeout => 900);
+$ua->agent('Bratonien-NC-Connector/1.0');
+$ua->cookie_jar({});
+
+my $login = $ua->post(
+    $opt{'base-url'}.'/ws.php?format=json',
+    {
+        method => 'pwg.session.login',
+        username => $opt{username},
+        password => $password,
+    },
+);
+die "Piwigo-Anmeldung fehlgeschlagen: ".$login->status_line."\n"
+    if !$login->is_success;
+
+my $login_result = eval { decode_json($login->decoded_content) };
+die "Piwigo-Anmeldung wurde abgelehnt\n"
+    if !$login_result || ($login_result->{stat} // '') ne 'ok';
+
+my $sync = $ua->post(
+    $opt{'base-url'}.'/admin.php?page=site_update&site=1',
+    {
+        sync => 'files',
+        display_info => 1,
+        privacy_level => 0,
+        sync_meta => 1,
+        simulate => 0,
+        'subcats-included' => 1,
+        bratonien_connector => 1,
+        submit => 1,
+    },
+);
+die "Piwigo-Datenbanksynchronisierung fehlgeschlagen: ".$sync->status_line."\n"
+    if !$sync->is_success;
+
+my $orphans = $ua->post(
+    $opt{'base-url'}.'/ws.php?format=json',
+    {
+        method => 'bratonien.nc.syncOrphans',
+        site_id => 1,
+        simulate => 0,
+    },
+);
+die "Piwigo-Orphan-Synchronisierung fehlgeschlagen: ".$orphans->status_line."\n"
+    if !$orphans->is_success;
+
+my $orphan_result = eval { decode_json($orphans->decoded_content) };
+die "Piwigo-Orphan-Synchronisierung wurde abgelehnt\n"
+    if !$orphan_result || ($orphan_result->{stat} // '') ne 'ok';
+
+my $result = $orphan_result->{result} || {};
+my $added = $result->{added_orphans} // 0;
+my $deleted = $result->{deleted_orphans} // 0;
+
+print "Piwigo-Datenbanksynchronisierung erfolgreich\n";
+print "Piwigo-Orphans synchronisiert: +$added / -$deleted\n";

runtime/lib/piwigo-sync.php

@@ -50,7 +50,7 @@ function http_request($url, array $fields, array $headers = array(), $cookie_fil
     CURLOPT_CONNECTTIMEOUT => 10,
     CURLOPT_TIMEOUT => 900,
     CURLOPT_FOLLOWLOCATION => false,
-    CURLOPT_USERAGENT => 'Bratonien-NC-Connector-WebDAV',
+    CURLOPT_USERAGENT => 'Bratonien-NC-Connector',
   );
   if ($headers) $options[CURLOPT_HTTPHEADER] = $headers;
   if ($cookie_file !== null)
@@ -141,10 +141,7 @@ function decrypt_blob($blob, $hex_key)
 
 function ensure_webdav_site(mysqli $db, $prefixeTable, $piwigo_root, array $connection_config, $connection_id)
 {
-  if ((string)($connection_config['source_mode'] ?? '') !== 'webdav-placeholder')
-  {
-    fail_sync('Verbindung #'.$connection_id.' ist keine WebDAV-Verbindung.');
-  }
+  if ((string)($connection_config['source_mode'] ?? '') !== 'webdav-placeholder') return 1;
 
   $gallery_root = rtrim((string)($connection_config['parallel_gallery_root'] ?? ''), '/');
   if ($gallery_root === '') fail_sync('WebDAV-Galeriewurzel fehlt in der Verbindungskonfiguration.');
@@ -161,7 +158,10 @@ function ensure_webdav_site(mysqli $db, $prefixeTable, $piwigo_root, array $conn
   $escaped = $db->real_escape_string($site_url);
   $result = $db->query("SELECT id FROM `{$prefixeTable}sites` WHERE galleries_url='{$escaped}' LIMIT 1");
   if (!$result) fail_sync('Piwigo-Site konnte nicht gelesen werden: '.$db->error);
-  if ($result->num_rows) return (int)$result->fetch_assoc()['id'];
+  if ($result->num_rows)
+  {
+    return (int)$result->fetch_assoc()['id'];
+  }
 
   if (!$db->query("INSERT INTO `{$prefixeTable}sites` (galleries_url) VALUES ('{$escaped}')"))
   {
@@ -209,15 +209,38 @@ try
   $site_id = ensure_webdav_site($db, $prefixeTable, $piwigo_root, $connection_config, $connection_id);
 
   $api = array('key_id'=>'', 'key_secret'=>'');
-  if (!empty($connection_config['api_enabled']))
+  $connection_scoped = (string)($connection_config['piwigo_auth'] ?? '') === 'connection-scoped' || array_key_exists('api_enabled', $connection_config);
+  if ($connection_scoped)
   {
-    $api['key_id'] = trim((string)($connection_credentials['api_key_id'] ?? ''));
-    $api['key_secret'] = trim((string)($connection_credentials['api_key_secret'] ?? ''));
+    if (!empty($connection_config['api_enabled']))
+    {
+      $api['key_id'] = trim((string)($connection_credentials['api_key_id'] ?? ''));
+      $api['key_secret'] = trim((string)($connection_credentials['api_key_secret'] ?? ''));
+    }
+  }
+  else
+  {
+    $api_result = $db->query("SELECT value FROM `{$prefixeTable}config` WHERE param='bratonien_nc_piwigo_api' LIMIT 1");
+    if ($api_result && $api_result->num_rows)
+    {
+      $api_blob = (string)$api_result->fetch_assoc()['value'];
+      if ($api_blob !== '')
+      {
+        $api_plain = decrypt_blob($api_blob, $hex_key);
+        $api_decoded = json_decode($api_plain, true);
+        if (is_array($api_decoded))
+        {
+          $api['key_id'] = (string)($api_decoded['key_id'] ?? '');
+          $api['key_secret'] = (string)($api_decoded['key_secret'] ?? '');
+        }
+      }
+    }
   }
 
-  $fallback_user = trim((string)($connection_credentials['piwigo_user'] ?? ''));
+  $fallback_user = (string)($connection_credentials['piwigo_user'] ?? '');
   $fallback_password = (string)($connection_credentials['piwigo_password'] ?? '');
 
+  $api_error = null;
   if ($api['key_id'] !== '' && $api['key_secret'] !== '')
   {
     try
@@ -229,6 +252,12 @@ try
       );
       decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncProductive', 'site_id'=>$site_id), $headers));
       $orphan = decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>$site_id, 'simulate'=>0), $headers));
+      // Entfernt alte technische bratonien-webdav-N Wrapper aus Site 1,
+      // nachdem deren generierte Verzeichnisse beim Reconcile entfernt wurden.
+      if ($site_id !== 1)
+      {
+        decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>1, 'simulate'=>0), $headers));
+      }
       $added = (int)($orphan['added_orphans'] ?? 0);
       $deleted = (int)($orphan['deleted_orphans'] ?? 0);
       echo "Piwigo-Synchronisierung per API erfolgreich (Site $site_id)\n";
@@ -237,12 +266,14 @@ try
     }
     catch (Throwable $e)
     {
-      fwrite(STDERR, "Piwigo-API nicht nutzbar: ".$e->getMessage()."\n");
+      $api_error = $e->getMessage();
+      fwrite(STDERR, "Piwigo-API nicht nutzbar: ".$api_error."\n");
     }
   }
   else
   {
-    fwrite(STDERR, "Piwigo-API nicht nutzbar: Fuer diese Verbindung ist keine API konfiguriert.\n");
+    $api_error = $connection_scoped ? 'Fuer diese Verbindung ist keine API konfiguriert.' : 'Keine gespeicherten API-Zugangsdaten.';
+    fwrite(STDERR, "Piwigo-API nicht nutzbar: ".$api_error."\n");
   }
 
   if ($fallback_user === '' || $fallback_password === '') fail_sync('Kein gespeicherter Benutzername/Passwort-Fallback fuer diese Verbindung vorhanden.');
@@ -260,6 +291,10 @@ try
       $cookie_file
     );
     $orphan = decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>$site_id, 'simulate'=>0), array(), $cookie_file));
+    if ($site_id !== 1)
+    {
+      decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>1, 'simulate'=>0), array(), $cookie_file));
+    }
     $added = (int)($orphan['added_orphans'] ?? 0);
     $deleted = (int)($orphan['deleted_orphans'] ?? 0);
     echo "Piwigo-Datenbanksynchronisierung per Benutzername/Passwort-Fallback erfolgreich (Site $site_id)\n";

runtime/nextcloud/update-showcase-source-view.sql

@@ -0,0 +1,17 @@
+CREATE OR REPLACE VIEW piwigo_showcase_sources AS
+SELECT
+  s.id AS share_id,
+  s.file_target AS display_name,
+  st.id AS storage_id,
+  f.path AS source_path,
+  s.accepted,
+  s.permissions,
+  s.item_type AS item_type
+FROM oc_share AS s
+JOIN oc_filecache AS f ON f.fileid = s.file_source
+JOIN oc_storages AS st ON st.numeric_id = f.storage
+WHERE lower(s.share_with) = 'showcase'
+  AND s.item_type IN ('folder', 'file')
+  AND s.accepted = 1;
+
+GRANT SELECT ON piwigo_showcase_sources TO piwigo_reader;

runtime/reconcile-webdav.php

@@ -82,6 +82,7 @@ $configDir = '/etc/bratonien-tools/nc-connector';
 $stateRoot = '/var/lib/bratonien-tools/nc-connector';
 $publicSourceRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-source';
 $publicGalleryRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-gallery';
+$legacyGalleryRoot = rtrim($piwigoRoot, '/').'/galleries';
 
 try
 {
@@ -103,15 +104,14 @@ try
   $hexKey = trim((string)$keyResult->fetch_assoc()['value']);
 
   $table = $prefixeTable.'bratonien_tools_nc_connections';
-  $rows = $db->query("SELECT id,name,adapter,config_json,secret_blob FROM `{$table}` WHERE adapter='remote' ORDER BY id DESC");
-  if (!$rows) fail_webdav_reconcile('WebDAV-Verbindungen konnten nicht gelesen werden: '.$db->error);
+  $rows = $db->query("SELECT id,name,adapter,config_json,secret_blob FROM `{$table}` ORDER BY id DESC");
+  if (!$rows) fail_webdav_reconcile('Connector-Verbindungen konnten nicht gelesen werden: '.$db->error);
 
-  foreach (array($configDir, $stateRoot, $publicSourceRoot, $publicGalleryRoot) as $dir)
+  foreach (array($configDir=>$configDir, $publicSourceRoot=>$publicSourceRoot, $publicGalleryRoot=>$publicGalleryRoot) as $dir=>$unused)
   {
-    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0750, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
+    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0755, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
   }
   @chmod($configDir, 0700);
-  @chmod($stateRoot, 0750);
   @chmod($publicSourceRoot, 0755);
   @chmod($publicGalleryRoot, 0755);
 
@@ -123,7 +123,9 @@ try
     $id = (int)$row['id'];
     $config = json_decode((string)$row['config_json'], true);
     if (!is_array($config)) $config = array();
+    if ((string)$row['adapter'] !== 'remote') continue;
     if ((string)($config['source_mode'] ?? '') !== 'webdav-placeholder') continue;
+    if (empty($config['parallel_test'])) continue;
 
     try
     {
@@ -142,6 +144,7 @@ try
       {
         fwrite(STDERR, "NC WebDAV #{$id}: identische Quelle bereits durch Verbindung #".$seenFingerprints[$fingerprint]." abgedeckt; doppelte Runtime wird unterdrueckt.\n");
         foreach (glob($configDir.'/webdav-connection-'.$id.'.*') ?: array() as $stale) @unlink($stale);
+        webdav_remove_generated_tree($legacyGalleryRoot.'/bratonien-webdav-'.$id, $legacyGalleryRoot);
         webdav_remove_generated_tree($publicGalleryRoot.'/connection-'.$id, $publicGalleryRoot);
         continue;
       }
@@ -153,12 +156,18 @@ try
       if (!is_dir($stateDir) && !mkdir($stateDir, 0750, true)) fail_webdav_reconcile('State-Verzeichnis konnte nicht angelegt werden.');
       @chmod($stateDir, 0750);
 
+      $legacyDefault = $legacyGalleryRoot.'/bratonien-webdav-'.$id;
       $galleryRoot = rtrim((string)($config['parallel_gallery_root'] ?? ''), '/');
-      $expectedGalleryRoot = $publicGalleryRoot.'/connection-'.$id;
-      if ($galleryRoot === '' || strpos($galleryRoot, $publicGalleryRoot.'/') !== 0) $galleryRoot = $expectedGalleryRoot;
+      if ($galleryRoot === '' || $galleryRoot === $legacyDefault || strpos($galleryRoot, $legacyGalleryRoot.'/bratonien-webdav-') === 0)
+      {
+        $galleryRoot = $publicGalleryRoot.'/connection-'.$id;
+      }
       if (!is_dir($galleryRoot) && !mkdir($galleryRoot, 0755, true)) fail_webdav_reconcile('WebDAV-Galeriebereich konnte nicht angelegt werden.');
       @chmod($galleryRoot, 0755);
 
+      // Alte technische Wrapper unter ./galleries duerfen nicht als Piwigo-Alben auftauchen.
+      webdav_remove_generated_tree($legacyDefault, $legacyGalleryRoot);
+
       $sourceDir = $publicSourceRoot.'/connection-'.$id;
       if (!is_dir($sourceDir) && !mkdir($sourceDir, 0755, true)) fail_webdav_reconcile('WebDAV-Platzhalterquelle konnte nicht angelegt werden.');
       @chmod($sourceDir, 0755);
@@ -206,23 +215,21 @@ try
       file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX);
       @chmod($configPath, 0600);
 
-      unset($config['parallel_test']);
       $config['state_dir'] = $stateDir;
       $config['status_file'] = $statusFile;
       $config['parallel_gallery_root'] = $galleryRoot;
       $config['source_fingerprint'] = $fingerprint;
       $config['runtime'] = array(
-        'mode'=>'webdav',
+        'mode'=>'parallel-webdav',
         'config'=>$configPath,
         'piwigo_sync_enabled'=>true,
         'reconciled_at'=>date('Y-m-d H:i:s'),
       );
       $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-      if (!is_string($json)) fail_webdav_reconcile('WebDAV-Runtime-Konfiguration konnte nicht serialisiert werden.');
-      $escaped = $db->real_escape_string($json);
-      if (!$db->query("UPDATE `{$table}` SET enabled=1, config_json='{$escaped}' WHERE id={$id} AND adapter='remote' LIMIT 1"))
+      if (is_string($json))
       {
-        fail_webdav_reconcile('WebDAV-Runtime-Status konnte nicht gespeichert werden: '.$db->error);
+        $escaped = $db->real_escape_string($json);
+        $db->query("UPDATE `{$table}` SET config_json='{$escaped}' WHERE id={$id} LIMIT 1");
       }
     }
     catch (Throwable $e)

runtime/reconcile.php

@@ -0,0 +1,336 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "CLI only\n");
+  exit(1);
+}
+
+function fail_reconcile($message)
+{
+  throw new RuntimeException($message);
+}
+
+function decrypt_reconcile($blob, $hexKey)
+{
+  if (!preg_match('/^[a-f0-9]{64}$/', (string)$hexKey)) fail_reconcile('Connector-Schluessel ist ungueltig.');
+  $outer = base64_decode(trim((string)$blob), true);
+  $payload = is_string($outer) ? json_decode($outer, true) : null;
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) fail_reconcile('Connector-Zugangsdaten haben ein unbekanntes Format.');
+  $iv = base64_decode((string)($payload['iv'] ?? ''), true);
+  $tag = base64_decode((string)($payload['tag'] ?? ''), true);
+  $cipher = base64_decode((string)($payload['data'] ?? ''), true);
+  $plain = openssl_decrypt($cipher, 'aes-256-gcm', hex2bin($hexKey), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($plain === false || $plain === '') fail_reconcile('Connector-Zugangsdaten konnten nicht entschluesselt werden.');
+  $decoded = json_decode($plain, true);
+  if (!is_array($decoded))
+  {
+    return array('db_password'=>$plain,'piwigo_user'=>'','piwigo_password'=>'','api_key_id'=>'','api_key_secret'=>'');
+  }
+  return array(
+    'db_password'=>(string)($decoded['db_password'] ?? ''),
+    'piwigo_user'=>(string)($decoded['piwigo_user'] ?? ''),
+    'piwigo_password'=>(string)($decoded['piwigo_password'] ?? ''),
+    'api_key_id'=>(string)($decoded['api_key_id'] ?? ''),
+    'api_key_secret'=>(string)($decoded['api_key_secret'] ?? ''),
+  );
+}
+
+function encrypt_reconcile(array $credentials, $hexKey)
+{
+  $plain = json_encode(array(
+    'v'=>2,
+    'db_password'=>(string)$credentials['db_password'],
+    'piwigo_user'=>(string)$credentials['piwigo_user'],
+    'piwigo_password'=>(string)$credentials['piwigo_password'],
+    'api_key_id'=>(string)$credentials['api_key_id'],
+    'api_key_secret'=>(string)$credentials['api_key_secret'],
+  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($plain)) fail_reconcile('Connector-Zugangsdaten konnten nicht serialisiert werden.');
+  $iv = random_bytes(12);
+  $tag = '';
+  $cipher = openssl_encrypt($plain, 'aes-256-gcm', hex2bin($hexKey), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($cipher === false) fail_reconcile('Connector-Zugangsdaten konnten nicht verschluesselt werden.');
+  return base64_encode(json_encode(array(
+    'v'=>1,
+    'iv'=>base64_encode($iv),
+    'tag'=>base64_encode($tag),
+    'data'=>base64_encode($cipher),
+  )));
+}
+
+function write_runtime_status($piwigoRoot, $id, $stateDir, $message)
+{
+  $payload = json_encode(array(
+    'state'=>'error',
+    'message'=>'Runtime-Vorbereitung fehlgeschlagen',
+    'timestamp'=>time(),
+    'auth_mode'=>'failed',
+    'api'=>array('state'=>'not_run','message'=>''),
+    'fallback'=>array('state'=>'not_run','message'=>''),
+    'error_detail'=>(string)$message,
+  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($payload)) return;
+  $targets = array(rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-status/connection-'.$id.'.json');
+  if ($stateDir !== '') $targets[] = rtrim($stateDir, '/').'/connector-status.json';
+  foreach ($targets as $target)
+  {
+    $dir = dirname($target);
+    if (!is_dir($dir)) @mkdir($dir, 0755, true);
+    @file_put_contents($target, $payload."\n", LOCK_EX);
+    @chmod($target, 0644);
+  }
+}
+
+function sql_reconcile(mysqli $db, $value)
+{
+  return $db->real_escape_string((string)$value);
+}
+
+function nextcloud_view_available(array $config, $password, $view)
+{
+  if (!preg_match('/^[A-Za-z_][A-Za-z0-9_]*$/', (string)$view)) return false;
+  $spec = array(0=>array('file','/dev/null','r'),1=>array('pipe','w'),2=>array('pipe','w'));
+  $command = array(
+    'psql','-XAt','-v','ON_ERROR_STOP=1',
+    '-h',(string)$config['host'],'-p',(string)$config['port'],'-U',(string)$config['user'],'-d',(string)$config['database'],
+    '-c','SELECT 1 FROM '.$view.' LIMIT 1'
+  );
+  $env = $_ENV;
+  $env['PGPASSWORD'] = (string)$password;
+  $process = @proc_open($command, $spec, $pipes, null, $env);
+  if (!is_resource($process)) return false;
+  stream_get_contents($pipes[1]);
+  stream_get_contents($pipes[2]);
+  fclose($pipes[1]); fclose($pipes[2]);
+  return proc_close($process) === 0;
+}
+
+function configured_access_user(array $config)
+{
+  foreach (array('access_user','nextcloud_access_user','showcase_user') as $key)
+  {
+    $value = trim((string)($config[$key] ?? ''));
+    if ($value !== '') return $value;
+  }
+  return '';
+}
+
+$pluginRoot = dirname(__DIR__);
+$piwigoRoot = dirname($pluginRoot, 2);
+$dbConfig = $piwigoRoot.'/local/config/database.inc.php';
+$configDir = '/etc/bratonien-tools/nc-connector';
+$stateRoot = '/var/lib/bratonien-tools/nc-connector';
+
+try
+{
+  if (!is_readable($dbConfig)) fail_reconcile('Piwigo-Datenbankkonfiguration ist nicht lesbar: '.$dbConfig);
+  $conf = array();
+  $prefixeTable = 'piwigo_';
+  require $dbConfig;
+  foreach (array('db_host','db_user','db_password','db_base') as $key)
+  {
+    if (!isset($conf[$key])) fail_reconcile('Piwigo-Datenbankkonfiguration ist unvollstaendig: '.$key);
+  }
+
+  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+  if ($db->connect_errno) fail_reconcile('Piwigo-Datenbank ist nicht erreichbar: '.$db->connect_error);
+  $db->set_charset('utf8mb4');
+
+  $keyResult = $db->query("SELECT value FROM `{$prefixeTable}config` WHERE param='bratonien_nc_connector_secret' LIMIT 1");
+  if (!$keyResult || !$keyResult->num_rows) fail_reconcile('Connector-Schluessel wurde nicht gefunden.');
+  $hexKey = trim((string)$keyResult->fetch_assoc()['value']);
+
+  $table = $prefixeTable.'bratonien_tools_nc_connections';
+  $rows = $db->query("SELECT id,name,adapter,enabled,takeover_state,config_json,secret_blob FROM `{$table}` ORDER BY id");
+  if (!$rows) fail_reconcile('Connector-Verbindungen konnten nicht gelesen werden: '.$db->error);
+
+  if (!is_dir($configDir) && !mkdir($configDir, 0700, true)) fail_reconcile('Runtime-Konfigurationsverzeichnis konnte nicht angelegt werden.');
+  chmod($configDir, 0700);
+
+  while ($row = $rows->fetch_assoc())
+  {
+    $id = (int)$row['id'];
+    $config = json_decode((string)$row['config_json'], true);
+    if (!is_array($config)) $config = array();
+    $stateDir = rtrim((string)($config['state_dir'] ?? ''), '/');
+    if ($stateDir === '') $stateDir = $stateRoot.'/connection-'.$id;
+
+    try
+    {
+      if ((string)$row['adapter'] !== 'local') continue;
+      $isActive = (int)$row['enabled'] === 1 && (string)$row['takeover_state'] === 'active';
+      $accessUser = configured_access_user($config);
+      $wizardConnection = (string)($config['origin'] ?? '') === 'native'
+        && trim((string)($config['nextcloud_url'] ?? '')) !== ''
+        && $accessUser !== '';
+      $verification = isset($config['verification']) && is_array($config['verification']) ? $config['verification'] : null;
+      $verificationFailed = is_array($verification) && empty($verification['ok']);
+      if (!$isActive && (!$wizardConnection || $verificationFailed)) continue;
+
+      foreach (array('host','port','database','user','source_view','activity_view','gallery_root') as $key)
+      {
+        if (trim((string)($config[$key] ?? '')) === '') fail_reconcile('Konfiguration unvollstaendig: '.$key.' fehlt.');
+      }
+      $storages = isset($config['storages']) && is_array($config['storages']) ? $config['storages'] : array();
+      if (!$storages) fail_reconcile('Keine Storage-Zuordnungen gespeichert.');
+
+      $credentials = decrypt_reconcile((string)$row['secret_blob'], $hexKey);
+      if ($credentials['db_password'] === '') fail_reconcile('Datenbankpasswort fehlt.');
+
+      $sourceMode = trim((string)($config['source_mode'] ?? ''));
+      if ($sourceMode === 'user-filesystem')
+      {
+        @unlink($configDir.'/connection-'.$id.'.conf');
+        fail_reconcile('Diese Verbindung verwendet den verworfenen experimentellen Benutzerpfad-Modus. Bitte die Verbindung mit dem aktuellen Assistenten neu anlegen.');
+      }
+
+      if ($sourceMode === '' || $sourceMode === 'legacy-view')
+      {
+        $canMigrate = $accessUser !== ''
+          && nextcloud_view_available($config, $credentials['db_password'], 'piwigo_connector_shares')
+          && nextcloud_view_available($config, $credentials['db_password'], 'piwigo_connector_activity');
+        if ($canMigrate)
+        {
+          $sourceMode = 'user-shares';
+          $config['source_mode'] = $sourceMode;
+          $config['source_view'] = 'piwigo_connector_shares';
+          $config['activity_view'] = 'piwigo_connector_activity';
+          $config['access_user'] = $accessUser;
+          $config['nextcloud_access_user'] = $accessUser;
+          unset($config['showcase_user']);
+          echo "NC Connector: Verbindung #{$id} auf generische benutzergefilterte Quellen migriert.\n";
+        }
+        else
+        {
+          $sourceMode = 'legacy-view';
+          $config['source_mode'] = $sourceMode;
+        }
+      }
+
+      if (!in_array($sourceMode, array('legacy-view','user-shares','selected-fileids'), true)) fail_reconcile('Unbekannter Quellenmodus: '.$sourceMode);
+      if ($sourceMode !== 'legacy-view' && $accessUser === '') fail_reconcile('Für die verbindungsbezogene Quelle fehlt der Nextcloud-Benutzer.');
+
+      $roots = isset($config['roots']) && is_array($config['roots']) ? $config['roots'] : array();
+      if ($sourceMode === 'selected-fileids' && !$roots) fail_reconcile('Für die Verbindung sind keine ausgewählten Nextcloud-Datei-IDs gespeichert.');
+
+      if (!$isActive && !array_key_exists('api_enabled', $config))
+      {
+        $hasFallback = $credentials['piwigo_user'] !== '' && $credentials['piwigo_password'] !== '';
+        if (!$hasFallback) fail_reconcile('Die Verbindung besitzt weder einen eigenen API-Zugang noch einen eigenen Fallback.');
+        $credentials['api_key_id'] = '';
+        $credentials['api_key_secret'] = '';
+        $config['piwigo_auth'] = 'connection-scoped';
+        $config['api_enabled'] = false;
+        $row['secret_blob'] = encrypt_reconcile($credentials, $hexKey);
+      }
+
+      $connectionScoped = (string)($config['piwigo_auth'] ?? '') === 'connection-scoped' || array_key_exists('api_enabled', $config);
+      if ($connectionScoped)
+      {
+        $apiAvailable = !empty($config['api_enabled']) && $credentials['api_key_id'] !== '' && $credentials['api_key_secret'] !== '';
+        $fallbackAvailable = $credentials['piwigo_user'] !== '' && $credentials['piwigo_password'] !== '';
+        if (!$apiAvailable && !$fallbackAvailable) fail_reconcile('Kein verbindungseigener Piwigo-Zugang gespeichert.');
+      }
+
+      if (!is_dir($stateDir) && !mkdir($stateDir, 0750, true)) fail_reconcile('State-Verzeichnis konnte nicht angelegt werden.');
+      chmod($stateDir, 0750);
+
+      $base = $configDir.'/connection-'.$id;
+      $dbPasswordPath = $base.'.db-password';
+      $piwigoPasswordPath = $base.'.piwigo-password';
+      $storagePath = $base.'.storages.tsv';
+      $rootsPath = $base.'.roots.tsv';
+      $configPath = $base.'.conf';
+      $statusFile = $stateDir.'/connector-status.json';
+
+      file_put_contents($dbPasswordPath, $credentials['db_password']."\n", LOCK_EX);
+      chmod($dbPasswordPath, 0600);
+
+      $fallbackAvailable = $credentials['piwigo_user'] !== '' && $credentials['piwigo_password'] !== '';
+      if ($fallbackAvailable)
+      {
+        file_put_contents($piwigoPasswordPath, $credentials['piwigo_password']."\n", LOCK_EX);
+        chmod($piwigoPasswordPath, 0600);
+      }
+      else @unlink($piwigoPasswordPath);
+
+      $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount<TAB>include_prefix');
+      foreach ($storages as $storage)
+      {
+        $storageLines[] = (string)($storage['storage_id'] ?? '')."\t"
+          .trim((string)($storage['source_prefix'] ?? ''), '/')."\t"
+          .(string)($storage['local_mount'] ?? '')."\t"
+          .trim((string)($storage['include_prefix'] ?? ''), '/');
+      }
+      file_put_contents($storagePath, implode("\n", $storageLines)."\n", LOCK_EX);
+      chmod($storagePath, 0600);
+
+      if ($sourceMode === 'selected-fileids')
+      {
+        $rootLines = array('# fileid<TAB>display_name');
+        foreach ($roots as $root)
+        {
+          $fileid = (int)($root['fileid'] ?? 0);
+          $display = trim((string)($root['display_name'] ?? ''));
+          if ($fileid < 1 || $display === '' || preg_match('/[\t\r\n]/', $display)) fail_reconcile('Eine gespeicherte Nextcloud-Quelle ist ungueltig.');
+          $rootLines[] = $fileid."\t".$display;
+        }
+        file_put_contents($rootsPath, implode("\n", $rootLines)."\n", LOCK_EX);
+        chmod($rootsPath, 0600);
+      }
+      else @unlink($rootsPath);
+
+      $lines = array(
+        'PIWIGO_ROOT='.$piwigoRoot,
+        'GALLERY_ROOT='.(string)$config['gallery_root'],
+        'STATE_DIR='.$stateDir,
+        'STATUS_FILE='.$statusFile,
+        'NC_DB_HOST='.(string)$config['host'],
+        'NC_DB_PORT='.(string)$config['port'],
+        'NC_DB_NAME='.(string)$config['database'],
+        'NC_DB_USER='.(string)$config['user'],
+        'NC_DB_VIEW='.(string)$config['source_view'],
+        'NC_ACTIVITY_VIEW='.(string)$config['activity_view'],
+        'NC_DB_PASSWORD_FILE='.$dbPasswordPath,
+        'STORAGE_CONFIG='.$storagePath,
+        'SOURCE_MODE='.$sourceMode,
+        'QUIET_SECONDS='.(int)($config['quiet_seconds'] ?? 120),
+        'MAX_WAIT_SECONDS='.(int)($config['max_wait_seconds'] ?? 900),
+        'FULL_SYNC_SECONDS='.(int)($config['full_sync_seconds'] ?? 86400),
+        'PIWIGO_SYNC_ENABLED=1',
+      );
+      if ($sourceMode !== 'legacy-view') $lines[] = 'ACCESS_USER='.escapeshellarg($accessUser);
+      if ($sourceMode === 'selected-fileids') $lines[] = 'ROOTS_CONFIG='.$rootsPath;
+      if ($fallbackAvailable)
+      {
+        $lines[] = 'PIWIGO_SYNC_USER='.$credentials['piwigo_user'];
+        $lines[] = 'PIWIGO_SYNC_PASSWORD_FILE='.$piwigoPasswordPath;
+      }
+      file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX);
+      chmod($configPath, 0600);
+
+      $config['state_dir'] = $stateDir;
+      $config['status_file'] = $statusFile;
+      $config['runtime'] = array('mode'=>'shared-runner','config'=>$configPath,'reconciled_at'=>date('Y-m-d H:i:s'));
+      $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+      if (!is_string($json)) fail_reconcile('Connector-Konfiguration konnte nicht serialisiert werden.');
+      $now = date('Y-m-d H:i:s');
+      $sql = "UPDATE `{$table}` SET enabled=1,takeover_state='active',config_json='".sql_reconcile($db,$json)."',secret_blob='".sql_reconcile($db,$row['secret_blob'])."',updated='".sql_reconcile($db,$now)."' WHERE id=".$id;
+      if (!$db->query($sql)) fail_reconcile('Runtime-Status konnte nicht gespeichert werden: '.$db->error);
+      if (!$isActive) echo "NC Connector: Verbindung #{$id} ({$row['name']}) automatisch in die gemeinsame Runtime uebernommen.\n";
+    }
+    catch (Throwable $e)
+    {
+      write_runtime_status($piwigoRoot, $id, $stateDir, $e->getMessage());
+      fwrite(STDERR, "NC Connector #{$id}: ".$e->getMessage()."\n");
+    }
+  }
+
+  exit(0);
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, "NC Connector Reconcile: ".$e->getMessage()."\n");
+  exit(1);
+}

runtime/repair-webdav-orphans.php

@@ -1,101 +0,0 @@
-#!/usr/bin/env php
-<?php
-if (PHP_SAPI !== 'cli')
-{
-  fwrite(STDERR, "CLI only\n");
-  exit(1);
-}
-
-$pluginRoot = dirname(__DIR__);
-$piwigoRoot = dirname($pluginRoot, 2);
-define('PHPWG_ROOT_PATH', rtrim($piwigoRoot, '/').'/');
-
-$_SERVER['REMOTE_ADDR'] = '127.0.0.1';
-$_SERVER['SERVER_ADDR'] = '127.0.0.1';
-$_SERVER['SERVER_NAME'] = 'localhost';
-$_SERVER['HTTP_HOST'] = 'localhost';
-$_SERVER['SERVER_PORT'] = '80';
-$_SERVER['REQUEST_METHOD'] = 'GET';
-$_SERVER['REQUEST_URI'] = '/';
-$_SERVER['SCRIPT_NAME'] = '/plugins/bratonien_tools/runtime/repair-webdav-orphans.php';
-$_SERVER['PHP_SELF'] = $_SERVER['SCRIPT_NAME'];
-$_SERVER['QUERY_STRING'] = '';
-$_SERVER['HTTPS'] = 'off';
-
-require_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-require_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
-
-$stateRoot = '/var/lib/bratonien-tools/nc-connector';
-$marker = $stateRoot.'/.webdav-orphan-repair-0963.done';
-
-try
-{
-  if (is_file($marker))
-  {
-    echo "NC WebDAV Altlasten-Reparatur: bereits abgeschlossen.\n";
-    exit(0);
-  }
-
-  if (!is_dir($stateRoot) && !mkdir($stateRoot, 0750, true))
-  {
-    throw new RuntimeException('State-Verzeichnis konnte nicht angelegt werden: '.$stateRoot);
-  }
-
-  $relativePrefix = './_data/bratonien-tools/nc-webdav-gallery/connection-';
-  $absolutePrefix = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-webdav-gallery/connection-';
-  $relativeLength = strlen($relativePrefix);
-  $absoluteLength = strlen($absolutePrefix);
-
-  $query = "SELECT id,path FROM ".IMAGES_TABLE.
-    " WHERE LEFT(path,".$relativeLength.")='".pwg_db_real_escape_string($relativePrefix)."'".
-    " OR LEFT(path,".$absoluteLength.")='".pwg_db_real_escape_string($absolutePrefix)."'";
-  $result = pwg_query($query);
-
-  $staleIds = array();
-  while ($row = pwg_db_fetch_assoc($result))
-  {
-    $id = (int)$row['id'];
-    $storedPath = (string)$row['path'];
-    if ($id < 1 || $storedPath === '') continue;
-
-    if (strpos($storedPath, $relativePrefix) === 0)
-    {
-      $filesystemPath = rtrim(PHPWG_ROOT_PATH, '/').'/'.ltrim(substr($storedPath, 2), '/');
-    }
-    elseif (strpos($storedPath, $absolutePrefix) === 0)
-    {
-      $filesystemPath = $storedPath;
-    }
-    else
-    {
-      continue;
-    }
-
-    if (!is_file($filesystemPath))
-    {
-      $staleIds[] = $id;
-    }
-  }
-
-  $staleIds = array_values(array_unique(array_map('intval', $staleIds)));
-  if ($staleIds)
-  {
-    delete_elements($staleIds, false);
-    invalidate_user_cache(true);
-  }
-
-  $payload = date('c').' removed='.count($staleIds)."\n";
-  if (file_put_contents($marker, $payload, LOCK_EX) === false)
-  {
-    throw new RuntimeException('Abschlussmarker konnte nicht geschrieben werden: '.$marker);
-  }
-  @chmod($marker, 0640);
-
-  echo 'NC WebDAV Altlasten-Reparatur: entfernte verwaiste Bilder='.count($staleIds)."\n";
-  exit(0);
-}
-catch (Throwable $e)
-{
-  fwrite(STDERR, 'NC WebDAV Altlasten-Reparatur: '.$e->getMessage()."\n");
-  exit(1);
-}

runtime/run-all.sh

@@ -5,13 +5,104 @@ CONFIG_DIR="/etc/bratonien-tools/nc-connector"
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 shopt -s nullglob
 
-if ! php "$SCRIPT_DIR/reconcile-webdav.php"; then
-    echo "NC Connector: WebDAV-Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
+read_config_value() {
+    local key="$1"
+    local file="$2"
+    local value
+    value="$(sed -n "s/^${key}=//p" "$file" | tail -n 1)"
+    value="${value%\"}"
+    value="${value#\"}"
+    value="${value%\'}"
+    value="${value#\'}"
+    printf '%s' "$value"
+}
+
+compact_text() {
+    printf '%s\n' "$1" | tail -n 20 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//'
+}
+
+read_webdav_failure_detail() {
+    local config="$1"
+    local captured_output="${2:-}"
+    local connection_id piwigo_root status_file status_detail
+
+    connection_id="$(read_config_value CONNECTION_ID "$config")"
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+
+    status_detail=""
+    if [[ -n "$connection_id" ]]; then
+        status_file="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status/connection-${connection_id}.json"
+        if [[ -r "$status_file" ]]; then
+            status_detail="$(php -r '
+              $file = $argv[1];
+              $data = json_decode((string)@file_get_contents($file), true);
+              if (!is_array($data)) exit(0);
+              $message = trim((string)($data["message"] ?? ""));
+              $detail = trim((string)($data["error_detail"] ?? ""));
+              $parts = array();
+              if ($message !== "") $parts[] = $message;
+              if ($detail !== "") $parts[] = $detail;
+              if ($parts) {
+                $text = preg_replace("/\\s+/u", " ", implode(" - ", $parts));
+                echo trim((string)$text);
+              }
+            ' "$status_file")"
+        fi
+    fi
+
+    if [[ -n "$captured_output" ]]; then
+        captured_output="$(compact_text "$captured_output")"
+    fi
+
+    if [[ -n "$status_detail" && -n "$captured_output" ]]; then
+        printf '%s' "$status_detail | Prozessausgabe: $captured_output"
+    elif [[ -n "$status_detail" ]]; then
+        printf '%s' "$status_detail"
+    elif [[ -n "$captured_output" ]]; then
+        printf '%s' "$captured_output"
+    elif [[ -z "$connection_id" ]]; then
+        printf '%s' 'WebDAV-Prozess wurde gestartet, aber die Verbindungs-ID fehlt in der Runtime-Konfiguration.'
+    else
+        printf '%s' "WebDAV-Prozess fuer Verbindung ${connection_id} endete mit Fehler, lieferte aber weder Statusdatei noch Prozessausgabe."
+    fi
+}
+
+write_route_status() {
+    local route="$1"
+    local label="$2"
+    local detail="$3"
+    local fallback_used="$4"
+    local success="$5"
+
+    [[ -n "${ROUTE_STATUS_FILE:-}" ]] || return 0
+    mkdir -p -- "$(dirname -- "$ROUTE_STATUS_FILE")"
+
+    php -r '
+      $payload = array(
+        "timestamp" => time(),
+        "route" => (string)$argv[2],
+        "label" => (string)$argv[3],
+        "detail" => (string)$argv[4],
+        "fallback_used" => $argv[5] === "1",
+        "success" => $argv[6] === "1"
+      );
+      $json = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+      if (!is_string($json) || file_put_contents($argv[1], $json.PHP_EOL, LOCK_EX) === false) {
+        fwrite(STDERR, "Route-Status konnte nicht geschrieben werden.\n");
+        exit(1);
+      }
+      @chmod($argv[1], 0644);
+    ' "$ROUTE_STATUS_FILE" "$route" "$label" "$detail" "$fallback_used" "$success"
+}
+
+if ! php "$SCRIPT_DIR/reconcile.php"; then
+    echo "NC Connector: gespeicherte lokale Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
     exit 1
 fi
 
-if ! php "$SCRIPT_DIR/repair-webdav-orphans.php"; then
-    echo "NC Connector: verwaiste WebDAV-Bilddatensaetze konnten nicht repariert werden." >&2
+if ! php "$SCRIPT_DIR/reconcile-webdav.php"; then
+    echo "NC Connector: WebDAV-Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
     exit 1
 fi
 
@@ -20,20 +111,131 @@ if ! php "$SCRIPT_DIR/cleanup-webdav-piwigo.php"; then
     exit 1
 fi
 
+if ! php "$SCRIPT_DIR/cleanup-stale.php"; then
+    echo "NC Connector: verwaiste Laufzeitdateien konnten nicht bereinigt werden." >&2
+    exit 1
+fi
+
+configs=("$CONFIG_DIR"/connection-*.conf)
 webdav_configs=("$CONFIG_DIR"/webdav-connection-*.conf)
 
-if [[ ${#webdav_configs[@]} -eq 0 ]]; then
-    echo "Keine WebDAV-Connector-Verbindungen konfiguriert."
+if [[ ${#configs[@]} -eq 0 && ${#webdav_configs[@]} -eq 0 ]]; then
+    echo "Keine NC-Connector-Verbindungen konfiguriert."
     exit 0
 fi
 
-result=0
-for config in "${webdav_configs[@]}"; do
+route_piwigo_root=""
+for candidate in "${webdav_configs[@]}" "${configs[@]}"; do
+    [[ -f "$candidate" ]] || continue
+    route_piwigo_root="$(read_config_value PIWIGO_ROOT "$candidate")"
+    [[ -n "$route_piwigo_root" ]] && break
+done
+[[ -n "$route_piwigo_root" ]] || route_piwigo_root="/var/www/piwigo"
+ROUTE_STATUS_FILE="${route_piwigo_root%/}/_data/bratonien-tools/nc-connector-status/route-status.json"
+
+webdav_success=0
+webdav_failed=0
+webdav_failure_detail=""
+
+if [[ ${#webdav_configs[@]} -eq 0 ]]; then
+    webdav_failed=1
+    webdav_failure_detail="Keine WebDAV-Runtime-Verbindung ist konfiguriert. Es existiert aktuell nur die Legacy-Verbindung; deshalb kann WebDAV nicht primaer laufen."
+    echo "NC Connector: $webdav_failure_detail" >&2
+else
+    for config in "${webdav_configs[@]}"; do
+        name="$(basename "$config")"
+        echo "NC Connector WebDAV primaer: $name"
+        webdav_output=""
+        if webdav_output="$(env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh" 2>&1)"; then
+            webdav_success=1
+            [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output"
+        else
+            webdav_exit=$?
+            webdav_failed=1
+            [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output" >&2
+            webdav_failure_detail="$(read_webdav_failure_detail "$config" "$webdav_output")"
+            webdav_failure_detail="Exit-Code ${webdav_exit}: ${webdav_failure_detail}"
+            echo "NC Connector: WebDAV-Lauf fehlgeschlagen: $webdav_failure_detail" >&2
+            echo "NC Connector: Legacy-Fallback bleibt verfuegbar." >&2
+        fi
+    done
+fi
+
+if [[ "$webdav_success" -eq 1 ]]; then
+    write_route_status \
+        "webdav" \
+        "WebDAV (primaer)" \
+        "WebDAV erfolgreich. Legacy-Fallback wurde in diesem Lauf nicht ausgefuehrt." \
+        "0" \
+        "1"
+    echo "NC Connector: WebDAV erfolgreich; Legacy-Verbindung wird in diesem Lauf nicht ausgefuehrt."
+    exit 0
+fi
+
+if [[ ${#configs[@]} -eq 0 ]]; then
+    [[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV ist fehlgeschlagen; Ursache konnte nicht ermittelt werden."
+    write_route_status \
+        "failed" \
+        "FEHLER - kein Datenweg" \
+        "WebDAV-Fehler: $webdav_failure_detail Keine Legacy-Fallback-Verbindung vorhanden." \
+        "0" \
+        "0"
+    echo "NC Connector: WebDAV ist fehlgeschlagen und es ist keine Legacy-Fallback-Verbindung vorhanden." >&2
+    exit 1
+fi
+
+echo "NC Connector: kein erfolgreicher WebDAV-Lauf; Legacy-Fallback wird ausgefuehrt."
+legacy_result=0
+
+for config in "${configs[@]}"; do
     name="$(basename "$config")"
-    echo "NC Connector WebDAV: $name"
-    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh"; then
-        result=1
+    connection_id=""
+    if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
+        connection_id="${BASH_REMATCH[1]}"
+    fi
+
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+    tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
+
+    if [[ -n "$connection_id" && -f "$tombstone_dir/deleted-$connection_id" ]]; then
+        echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
+        rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
+            "$CONFIG_DIR/connection-$connection_id.db-password" \
+            "$CONFIG_DIR/connection-$connection_id.piwigo-password" \
+            "$CONFIG_DIR/connection-$connection_id.storages.tsv" \
+            "$CONFIG_DIR/connection-$connection_id.roots.tsv"
+        rm -f -- "$tombstone_dir/deleted-$connection_id"
+        continue
+    fi
+
+    echo "NC Connector Legacy-Fallback: $name"
+    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
+        legacy_result=1
     fi
 done
 
-exit "$result"
+if [[ "$legacy_result" -eq 0 ]]; then
+    [[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV war nicht erfolgreich; Ursache konnte nicht ermittelt werden."
+    write_route_status \
+        "legacy_fallback" \
+        "LEGACY-FALLBACK AKTIV" \
+        "WebDAV-Fehler: $webdav_failure_detail Legacy-Fallback wurde erfolgreich ausgefuehrt." \
+        "1" \
+        "1"
+    echo "NC Connector: Legacy-Fallback erfolgreich."
+    exit 0
+fi
+
+[[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV war nicht erfolgreich; Ursache konnte nicht ermittelt werden."
+write_route_status \
+    "failed" \
+    "FEHLER - WebDAV und Fallback" \
+    "WebDAV-Fehler: $webdav_failure_detail Legacy-Fallback ist ebenfalls fehlgeschlagen." \
+    "1" \
+    "0"
+
+if [[ "$webdav_failed" -eq 1 ]]; then
+    echo "NC Connector: WebDAV und Legacy-Fallback sind fehlgeschlagen." >&2
+fi
+exit 1

runtime/sync.sh

@@ -0,0 +1,270 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+CONFIG_FILE="${PIWIGO_CONFIG:-/etc/bratonien-tools/nc-connector/connection-1.conf}"
+[[ -r "$CONFIG_FILE" ]] || { echo "Konfiguration fehlt: $CONFIG_FILE" >&2; exit 1; }
+
+PIWIGO_SYNC_OVERRIDE_VALUE="${PIWIGO_SYNC_OVERRIDE-}"
+# shellcheck source=/dev/null
+source "$CONFIG_FILE"
+
+: "${NC_ACTIVITY_VIEW:?NC_ACTIVITY_VIEW fehlt}"
+: "${NC_DB_VIEW:?NC_DB_VIEW fehlt}"
+SOURCE_MODE="${SOURCE_MODE:-legacy-view}"
+ACCESS_USER="${ACCESS_USER:-}"
+ROOTS_CONFIG="${ROOTS_CONFIG:-}"
+
+case "$SOURCE_MODE" in
+    legacy-view|user-shares|selected-fileids) ;;
+    *) echo "Unbekannter SOURCE_MODE: $SOURCE_MODE" >&2; exit 1 ;;
+esac
+if [[ "$SOURCE_MODE" != "legacy-view" && -z "$ACCESS_USER" ]]; then
+    echo "ACCESS_USER fehlt fuer die verbindungsbezogene Datenquelle." >&2
+    exit 1
+fi
+if [[ "$SOURCE_MODE" == "selected-fileids" && ( -z "$ROOTS_CONFIG" || ! -r "$ROOTS_CONFIG" ) ]]; then
+    echo "ROOTS_CONFIG fehlt fuer die ausgewaehlten Nextcloud-Quellen." >&2
+    exit 1
+fi
+
+if [[ -n "$PIWIGO_SYNC_OVERRIDE_VALUE" ]]; then
+    case "$PIWIGO_SYNC_OVERRIDE_VALUE" in
+        0|1) PIWIGO_SYNC_ENABLED="$PIWIGO_SYNC_OVERRIDE_VALUE" ;;
+        *) echo "PIWIGO_SYNC_OVERRIDE muss 0 oder 1 sein." >&2; exit 1 ;;
+    esac
+fi
+
+install -d -m 0750 "$STATE_DIR"
+MANIFEST="$STATE_DIR/manifest.tsv"
+MAP_FILE="$STATE_DIR/name-map.json"
+LOCK_FILE="$STATE_DIR/sync.lock"
+ACTIVITY_STATE="$STATE_DIR/activity.json"
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+
+CONNECTION_ID="${CONNECTION_ID:-}"
+if [[ -z "$CONNECTION_ID" ]]; then
+    CONFIG_BASENAME="$(basename -- "$CONFIG_FILE")"
+    if [[ "$CONFIG_BASENAME" =~ ^connection-([0-9]+)\.conf$ ]]; then
+        CONNECTION_ID="${BASH_REMATCH[1]}"
+    else
+        echo "Connector-ID konnte nicht aus $CONFIG_FILE ermittelt werden." >&2
+        exit 1
+    fi
+fi
+
+PUBLIC_STATUS_DIR="${PIWIGO_ROOT%/}/_data/bratonien-tools/nc-connector-status"
+PUBLIC_STATUS_FILE="$PUBLIC_STATUS_DIR/connection-$CONNECTION_ID.json"
+install -d -m 0755 "${PIWIGO_ROOT%/}/_data/bratonien-tools" "$PUBLIC_STATUS_DIR"
+
+exec 9>"$LOCK_FILE"
+flock -n 9 || exit 0
+
+AUTH_MODE=""
+API_STATE="not_run"
+API_MESSAGE=""
+FALLBACK_STATE="not_run"
+FALLBACK_MESSAGE=""
+ERROR_DETAIL=""
+ERROR_STAGE="Vorbereitung"
+ERROR_MESSAGE="Synchronisierung fehlgeschlagen"
+
+compact_output() {
+    tail -n 8 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//'
+}
+
+write_status() {
+    local state="$1" message="$2"
+    local error_detail="$ERROR_DETAIL"
+    [[ "$state" == "error" ]] || error_detail=""
+    python3 - "$STATUS_FILE" "$PUBLIC_STATUS_FILE" "$state" "$message" "$AUTH_MODE" "$API_STATE" "$API_MESSAGE" "$FALLBACK_STATE" "$FALLBACK_MESSAGE" "$error_detail" <<'PY'
+import json, os, sys, tempfile, time
+(path, public_path, state, message, auth_mode, api_state, api_message,
+ fallback_state, fallback_message, error_detail) = sys.argv[1:]
+payload = {
+    "state": state,
+    "message": message,
+    "timestamp": int(time.time()),
+    "auth_mode": auth_mode,
+    "api": {"state": api_state, "message": api_message},
+    "fallback": {"state": fallback_state, "message": fallback_message},
+    "error_detail": error_detail,
+}
+
+def write_json(target):
+    os.makedirs(os.path.dirname(target), exist_ok=True)
+    fd, temporary = tempfile.mkstemp(dir=os.path.dirname(target))
+    with os.fdopen(fd, "w", encoding="utf-8") as handle:
+        json.dump(payload, handle, ensure_ascii=False)
+        handle.write("\n")
+    os.chmod(temporary, 0o644)
+    os.replace(temporary, target)
+
+write_json(path)
+write_json(public_path)
+PY
+}
+
+failure() {
+    local exit_code="${1:-1}"
+    local failed_command="${2:-unbekannt}"
+    local failed_line="${3:-?}"
+    trap - ERR
+    if [[ -z "$ERROR_DETAIL" ]]; then
+        ERROR_DETAIL="Schritt: $ERROR_STAGE. Exit-Code: $exit_code. Zeile: $failed_line. Fehlgeschlagener Befehl: $failed_command"
+    fi
+    write_status error "$ERROR_MESSAGE"
+    exit "$exit_code"
+}
+trap 'failure $? "$BASH_COMMAND" "$LINENO"' ERR
+
+run_stage() {
+    local stage="$1" message="$2"
+    shift 2
+    local output="" exit_code=0
+    ERROR_STAGE="$stage"
+    ERROR_MESSAGE="$message"
+    if output="$("$@" 2>&1)"; then exit_code=0; else exit_code=$?; fi
+    [[ -z "$output" ]] || printf '%s\n' "$output"
+    if [[ "$exit_code" -ne 0 ]]; then
+        ERROR_DETAIL="Schritt: $stage. Exit-Code: $exit_code."
+        [[ -z "$output" ]] || ERROR_DETAIL+=" Ausgabe: $(printf '%s\n' "$output" | compact_output)"
+        trap - ERR
+        write_status error "$message"
+        exit "$exit_code"
+    fi
+}
+
+ERROR_STAGE="Lokalen Zustand prüfen"
+ERROR_MESSAGE="Lokaler Connector-Zustand konnte nicht geprüft werden"
+NEEDS_LOCAL_REPAIR=0
+if [[ ! -s "$MAP_FILE" ]]; then
+    NEEDS_LOCAL_REPAIR=1
+else
+    set +e
+    python3 - "$MAP_FILE" "$GALLERY_ROOT" <<'PY'
+import json, sys
+from pathlib import Path
+mapping = json.loads(Path(sys.argv[1]).read_text(encoding="utf-8"))
+gallery = Path(sys.argv[2])
+roots = [target for source, target in mapping.items() if source.startswith("share:") and "/" not in source]
+raise SystemExit(0 if roots and all((gallery / target).is_dir() for target in roots) else 1)
+PY
+    ROOTS_INTACT=$?
+    set -e
+    [[ "$ROOTS_INTACT" == "0" ]] || NEEDS_LOCAL_REPAIR=1
+fi
+
+if [[ "$NEEDS_LOCAL_REPAIR" == "0" && "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
+    set +e
+    php "$SCRIPT_DIR/lib/piwigo-db-check.php" "$MAP_FILE" "$PIWIGO_ROOT"
+    PIWIGO_ALBUMS_INTACT=$?
+    set -e
+    [[ "$PIWIGO_ALBUMS_INTACT" == "0" ]] || NEEDS_LOCAL_REPAIR=1
+fi
+
+GATE_ARGS=(
+    --state "$ACTIVITY_STATE" --host "$NC_DB_HOST" --port "$NC_DB_PORT"
+    --database "$NC_DB_NAME" --user "$NC_DB_USER" --password-file "$NC_DB_PASSWORD_FILE"
+    --view "$NC_ACTIVITY_VIEW" --source-view "$NC_DB_VIEW"
+    --quiet "$QUIET_SECONDS" --max-wait "$MAX_WAIT_SECONDS" --full-after "$FULL_SYNC_SECONDS"
+)
+if [[ "$SOURCE_MODE" != "legacy-view" ]]; then GATE_ARGS+=(--access-user "$ACCESS_USER"); fi
+if [[ "$SOURCE_MODE" == "selected-fileids" ]]; then GATE_ARGS+=(--roots-config "$ROOTS_CONFIG"); fi
+
+if [[ "$NEEDS_LOCAL_REPAIR" == "1" ]]; then
+    GATE_RESULT=0
+else
+    ERROR_STAGE="Nextcloud-Aktivitaet pruefen"
+    ERROR_MESSAGE="Nextcloud-Aktivitaet konnte nicht geprueft werden"
+    if GATE_OUTPUT="$(python3 "$SCRIPT_DIR/lib/activity_gate.py" check "${GATE_ARGS[@]}" 2>&1)"; then GATE_RESULT=0; else GATE_RESULT=$?; fi
+    [[ -z "$GATE_OUTPUT" ]] || printf '%s\n' "$GATE_OUTPUT"
+fi
+
+if [[ "$GATE_RESULT" == "3" ]]; then
+    trap - ERR
+    write_status ok "Keine Aenderungen gefunden"
+    exit 0
+fi
+if [[ "$GATE_RESULT" != "0" ]]; then
+    ERROR_DETAIL="Schritt: Nextcloud-Aktivitaet pruefen. Exit-Code: $GATE_RESULT."
+    [[ -z "${GATE_OUTPUT:-}" ]] || ERROR_DETAIL+=" Ausgabe: $(printf '%s\n' "$GATE_OUTPUT" | compact_output)"
+    trap - ERR
+    write_status error "Nextcloud-Aktivitaet konnte nicht geprueft werden"
+    exit "$GATE_RESULT"
+fi
+
+if [[ "$SOURCE_MODE" == "selected-fileids" ]]; then
+    run_stage "Ausgewaehlte Nextcloud-Quellen aufloesen" "Ausgewaehlte Nextcloud-Quellen konnten nicht aufgeloest werden" \
+        python3 "$SCRIPT_DIR/lib/build_selected_manifest.py" \
+        --host "$NC_DB_HOST" --port "$NC_DB_PORT" --database "$NC_DB_NAME" --user "$NC_DB_USER" \
+        --password-file "$NC_DB_PASSWORD_FILE" --view "$NC_DB_VIEW" \
+        --storage-config "$STORAGE_CONFIG" --roots-config "$ROOTS_CONFIG" --output "$MANIFEST"
+else
+    MANIFEST_ARGS=(
+        --host "$NC_DB_HOST" --port "$NC_DB_PORT" --database "$NC_DB_NAME" --user "$NC_DB_USER"
+        --password-file "$NC_DB_PASSWORD_FILE" --view "$NC_DB_VIEW"
+        --storage-config "$STORAGE_CONFIG" --output "$MANIFEST"
+    )
+    if [[ "$SOURCE_MODE" == "user-shares" ]]; then MANIFEST_ARGS+=(--access-user "$ACCESS_USER"); fi
+    run_stage "Nextcloud-Dateiliste lesen" "Dateiliste aus Nextcloud konnte nicht erstellt werden" \
+        python3 "$SCRIPT_DIR/lib/build_manifest.py" "${MANIFEST_ARGS[@]}"
+fi
+
+run_stage "Lokalen Galeriebaum aktualisieren" "Lokaler Galeriebaum konnte nicht aktualisiert werden" \
+    python3 "$SCRIPT_DIR/lib/shadow_tree.py" --manifest "$MANIFEST" --destination "$GALLERY_ROOT" --state "$MAP_FILE"
+
+if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
+    ERROR_STAGE="Piwigo synchronisieren"
+    ERROR_MESSAGE="Piwigo-Synchronisierung fehlgeschlagen"
+    if PIWIGO_OUTPUT="$(php "$SCRIPT_DIR/lib/piwigo-sync.php" --piwigo-root="$PIWIGO_ROOT" --connection-id="$CONNECTION_ID" --base-url="http://127.0.0.1" 2>&1)"; then PIWIGO_EXIT=0; else PIWIGO_EXIT=$?; fi
+    printf '%s\n' "$PIWIGO_OUTPUT"
+
+    if grep -q 'Piwigo-Synchronisierung per API erfolgreich' <<<"$PIWIGO_OUTPUT"; then
+        AUTH_MODE="api"; API_STATE="ok"; API_MESSAGE="API-Synchronisierung erfolgreich"
+        FALLBACK_STATE="not_needed"; FALLBACK_MESSAGE="Fallback wurde nicht benoetigt"
+    else
+        API_LINE="$(grep -m1 '^Piwigo-API nicht nutzbar:' <<<"$PIWIGO_OUTPUT" || true)"
+        API_STATE="error"
+        if [[ -n "$API_LINE" ]]; then API_MESSAGE="${API_LINE#Piwigo-API nicht nutzbar: }"; else API_MESSAGE="API-Synchronisierung war nicht erfolgreich"; fi
+        if grep -q 'Piwigo-Datenbanksynchronisierung per Benutzername/Passwort-Fallback erfolgreich' <<<"$PIWIGO_OUTPUT"; then
+            AUTH_MODE="fallback"; FALLBACK_STATE="ok"; FALLBACK_MESSAGE="Benutzername/Passwort-Fallback erfolgreich"
+        elif [[ "$PIWIGO_EXIT" -ne 0 ]]; then
+            AUTH_MODE="failed"; FALLBACK_STATE="error"; FALLBACK_MESSAGE="$(tail -n 1 <<<"$PIWIGO_OUTPUT")"
+        fi
+    fi
+    if [[ "$PIWIGO_EXIT" -ne 0 ]]; then
+        ERROR_DETAIL="Schritt: Piwigo synchronisieren. Exit-Code: $PIWIGO_EXIT. Ausgabe: $(printf '%s\n' "$PIWIGO_OUTPUT" | compact_output)"
+        trap - ERR
+        write_status error "Piwigo-Synchronisierung fehlgeschlagen"
+        exit "$PIWIGO_EXIT"
+    fi
+fi
+
+COMMIT_ARGS=(
+    --state "$ACTIVITY_STATE" --host "$NC_DB_HOST" --port "$NC_DB_PORT"
+    --database "$NC_DB_NAME" --user "$NC_DB_USER" --password-file "$NC_DB_PASSWORD_FILE"
+    --view "$NC_ACTIVITY_VIEW" --source-view "$NC_DB_VIEW"
+)
+if [[ "$SOURCE_MODE" != "legacy-view" ]]; then COMMIT_ARGS+=(--access-user "$ACCESS_USER"); fi
+if [[ "$SOURCE_MODE" == "selected-fileids" ]]; then COMMIT_ARGS+=(--roots-config "$ROOTS_CONFIG"); fi
+
+ERROR_STAGE="Aktivitaetsstand speichern"
+ERROR_MESSAGE="Aktivitaetsstand konnte nicht gespeichert werden"
+if COMMIT_OUTPUT="$(python3 "$SCRIPT_DIR/lib/activity_gate.py" commit "${COMMIT_ARGS[@]}" 2>&1)"; then COMMIT_EXIT=0; else COMMIT_EXIT=$?; fi
+[[ -z "$COMMIT_OUTPUT" ]] || printf '%s\n' "$COMMIT_OUTPUT"
+if [[ "$COMMIT_EXIT" -ne 0 ]]; then
+    ERROR_DETAIL="Schritt: Aktivitaetsstand speichern. Exit-Code: $COMMIT_EXIT."
+    [[ -z "$COMMIT_OUTPUT" ]] || ERROR_DETAIL+=" Ausgabe: $(printf '%s\n' "$COMMIT_OUTPUT" | compact_output)"
+    trap - ERR
+    write_status error "Aktivitaetsstand konnte nicht gespeichert werden"
+    exit "$COMMIT_EXIT"
+fi
+
+trap - ERR
+if [[ "$AUTH_MODE" == "fallback" ]]; then
+    write_status warning "Synchronisierung erfolgreich ueber Fallback; API war nicht nutzbar"
+elif [[ "$AUTH_MODE" == "api" ]]; then
+    write_status ok "Synchronisierung erfolgreich ueber API"
+else
+    write_status ok "Synchronisierung erfolgreich"
+fi

template/admin_tabs.tpl

@@ -9,7 +9,13 @@
 .bratonien-tab-panel { width:100%; max-width:none; margin-left:0 !important; margin-right:0 !important; }
 .bratonien-tab-panel[hidden] { display:none !important; }
 .bratonien-card { margin-left:0; margin-right:0; }
-@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px} }
+.bratonien-edit-dialog { width:min(920px,calc(100vw - 3rem)); max-height:88vh; overflow:auto; background:#444; color:inherit; border:1px solid #777; border-radius:4px; padding:0; box-shadow:0 18px 60px rgba(0,0,0,.55); }
+.bratonien-edit-dialog::backdrop { background:rgba(0,0,0,.55); }
+.bratonien-edit-dialog__body { padding:1.25rem 1.5rem; }
+.bratonien-storage-row { display:grid; grid-template-columns:minmax(120px,.7fr) minmax(150px,1fr) minmax(240px,1.5fr) auto; gap:.5rem; align-items:end; margin:.5rem 0; }
+.bratonien-storage-row label { display:flex; flex-direction:column; gap:.25rem; }
+.bratonien-storage-row input { width:100%; box-sizing:border-box; }
+@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px}.bratonien-storage-row{grid-template-columns:1fr} }
 </style>
 <div id="bratonien-tabs-anchor"></div>
 <script>
@@ -48,12 +54,31 @@
     var openButton=document.getElementById('bratonien-nc-wizard-open');
     var closeButton=document.getElementById('bratonien-nc-wizard-close');
     var storageKey='bratonienNcWizardOpen';
+    var modeKey='bratonienNcWizardMode';
     var resetBusy=false;
 
     function token(){var input=section.querySelector('input[name="pwg_token"]');return input?input.value:'';}
     function setOpen(value){try{if(value)sessionStorage.setItem(storageKey,'1');else sessionStorage.removeItem(storageKey);}catch(e){}}
+    function mode(){try{return sessionStorage.getItem(modeKey)||'';}catch(e){return '';}}
+    function clearMode(){try{sessionStorage.removeItem(modeKey);}catch(e){}}
+    function applyMode(){
+      if(!dialog)return;
+      var current=mode();
+      var heading=dialog.querySelector('h4');
+      var finish=dialog.querySelector('button[value="nc_connector_wizard_finish"]');
+      if(current==='edit'){
+        if(heading)heading.textContent='Verbindung bearbeiten';
+        if(finish)finish.textContent='Änderungen speichern';
+      }else if(current==='migrate'){
+        if(heading)heading.textContent='Auf WebDAV migrieren';
+        if(finish)finish.textContent='Migration starten';
+      }else{
+        if(heading)heading.textContent='Neue Verbindung';
+        if(finish)finish.textContent='Verbindung anlegen';
+      }
+    }
     function showWizard(){
-      setOpen(true);
+      setOpen(true);applyMode();
       if(!dialog)return;
       if(typeof dialog.showModal==='function'&&!dialog.open)dialog.showModal();
       else dialog.setAttribute('open','open');
@@ -65,13 +90,13 @@
       return fetch(window.location.href,{method:'POST',credentials:'same-origin',cache:'no-store',headers:{'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8'},body:body.toString()});
     }
     function closeAfterReset(){
-      if(resetBusy)return;resetBusy=true;setOpen(false);
+      if(resetBusy)return;resetBusy=true;setOpen(false);clearMode();
       resetServer().catch(function(){}).finally(function(){resetBusy=false;if(dialog){if(typeof dialog.close==='function'&&dialog.open)dialog.close();else dialog.removeAttribute('open');}});
     }
 
     if(openButton){
       openButton.addEventListener('click',function(event){
-        event.preventDefault();event.stopImmediatePropagation();showWizard();
+        event.preventDefault();event.stopImmediatePropagation();clearMode();showWizard();
       },true);
     }
     if(closeButton){
@@ -80,18 +105,111 @@
     if(dialog){
       dialog.addEventListener('cancel',function(event){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();},true);
       dialog.addEventListener('click',function(event){if(event.target===dialog){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();}},true);
-
-      // Every wizard POST explicitly preserves the open state before the
-      // browser leaves the page. Validation errors therefore return to the
-      // same wizard step instead of closing/resetting the dialog.
       [].slice.call(dialog.querySelectorAll('form[data-bratonien-wizard-form]')).forEach(function(form){
-        form.addEventListener('submit',function(){setOpen(true);},true);
+        form.addEventListener('submit',function(event){
+          var submitter=event.submitter;
+          setOpen(true);
+          if(submitter&&submitter.hasAttribute('data-bratonien-wizard-end')){
+            setOpen(false);
+            if(submitter.value==='nc_connector_wizard_reset')clearMode();
+          }
+        },true);
       });
-
       try{if(sessionStorage.getItem(storageKey)==='1')showWizard();}catch(e){}
+      applyMode();
     }
   }
 
+  function initNCConnectionEditing(){
+    var section=document.getElementById('nc-connector');if(!section)return;
+    var modeKey='bratonienNcWizardMode';
+    var pwgTokenInput=section.querySelector('input[name="pwg_token"]');
+    var pwgToken=pwgTokenInput?pwgTokenInput.value:'';
+
+    function setMode(value){try{sessionStorage.setItem(modeKey,value);}catch(e){}}
+    function makePostButton(label,tool,id,modeValue){
+      var form=document.createElement('form');form.method='post';form.style.display='inline';
+      var token=document.createElement('input');token.type='hidden';token.name='pwg_token';token.value=pwgToken;form.appendChild(token);
+      var connection=document.createElement('input');connection.type='hidden';connection.name='connection_id';connection.value=String(id);form.appendChild(connection);
+      var button=document.createElement('button');button.type='submit';button.className='buttonLike';button.name='bratonien_tool';button.value=tool;button.textContent=label;
+      if(modeValue)form.addEventListener('submit',function(){setMode(modeValue);});
+      form.appendChild(button);return form;
+    }
+    function escapeHtml(value){return String(value==null?'':value).replace(/[&<>"']/g,function(c){return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#039;'}[c];});}
+    function localEditorDialog(){
+      var dialog=document.getElementById('bratonien-nc-local-edit-dialog');
+      if(dialog)return dialog;
+      dialog=document.createElement('dialog');dialog.id='bratonien-nc-local-edit-dialog';dialog.className='bratonien-edit-dialog';
+      dialog.innerHTML='<div class="bratonien-edit-dialog__body"><div style="display:flex;align-items:center;justify-content:space-between;gap:1rem"><div><h4 style="margin:0">Verbindung bearbeiten</h4><p class="bratonien-base-note" style="margin:.35rem 0 0">Bestehende Legacy-Verbindung. Änderungen werden in derselben Verbindung gespeichert.</p></div><button type="button" class="buttonLike" data-local-edit-close>Schließen</button></div><div data-local-edit-content style="margin-top:1rem"></div></div>';
+      document.body.appendChild(dialog);
+      dialog.querySelector('[data-local-edit-close]').addEventListener('click',function(){dialog.close();});
+      dialog.addEventListener('click',function(event){if(event.target===dialog)dialog.close();});
+      return dialog;
+    }
+    function storageRow(storage){
+      return '<div class="bratonien-storage-row" data-storage-row>'+
+        '<label>Storage-ID<input name="nc_storage_id[]" value="'+escapeHtml(storage.storage_id||'')+'" required></label>'+
+        '<label>Quellordner<input name="nc_source_prefix[]" value="'+escapeHtml(storage.source_prefix||'')+'" placeholder="optional"></label>'+
+        '<label>Lokaler Speicherpfad<input name="nc_local_mount[]" value="'+escapeHtml(storage.local_mount||'')+'" required></label>'+
+        '<button type="button" class="buttonLike" data-remove-storage>Entfernen</button></div>';
+    }
+    function openLocalEditor(id){
+      var dialog=localEditorDialog();
+      var content=dialog.querySelector('[data-local-edit-content]');
+      content.innerHTML='<p class="bratonien-base-note">Verbindung wird geladen …</p>';
+      if(typeof dialog.showModal==='function')dialog.showModal();else dialog.setAttribute('open','open');
+      fetch('plugins/bratonien_tools/nc-connector-edit-data.php?connection_id='+encodeURIComponent(id)+'&_='+Date.now(),{credentials:'same-origin',cache:'no-store',headers:{'Accept':'application/json'}})
+        .then(function(response){return response.json().then(function(data){if(!response.ok)throw new Error(data.error||('HTTP '+response.status));return data;});})
+        .then(function(data){
+          if(data.adapter!=='local')throw new Error('Diese Verbindung ist keine Legacy-Verbindung.');
+          var legacy=data.legacy||{};var storages=Array.isArray(legacy.storages)?legacy.storages:[];
+          var rows=storages.map(storageRow).join('');
+          if(!rows)rows=storageRow({});
+          content.innerHTML='<form method="post" data-local-edit-form>'+
+            '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'+
+            '<input type="hidden" name="connection_id" value="'+escapeHtml(data.id)+'">'+
+            '<div class="bratonien-form-grid">'+
+              '<label class="bratonien-label">Name</label><input name="connection_name" value="'+escapeHtml(data.name)+'" required>'+
+              '<label class="bratonien-label">Datenbank-Server</label><input name="nc_host" value="'+escapeHtml(legacy.host)+'" required>'+
+              '<label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="'+escapeHtml(legacy.port||5432)+'" required>'+
+              '<label class="bratonien-label">Datenbank</label><input name="nc_database" value="'+escapeHtml(legacy.database)+'" required>'+
+              '<label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" value="'+escapeHtml(legacy.user)+'" required>'+
+              '<label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" placeholder="leer = unverändert">'+
+            '</div>'+
+            '<h5 style="margin-top:1rem">Speicherorte</h5><p class="bratonien-base-note">Jeder Speicherort wird einzeln bearbeitet. Es ist kein Pipe-/Textformat erforderlich.</p><div data-storage-list>'+rows+'</div><button type="button" class="buttonLike" data-add-storage>Speicherort hinzufügen</button>'+
+            '<details style="margin-top:1rem"><summary>Erweiterte Legacy-Einstellungen</summary><div class="bratonien-form-grid" style="margin-top:.75rem">'+
+              '<label class="bratonien-label">Source-View</label><input name="nc_source_view" value="'+escapeHtml(legacy.source_view)+'" required>'+
+              '<label class="bratonien-label">Activity-View</label><input name="nc_activity_view" value="'+escapeHtml(legacy.activity_view)+'" required>'+
+              '<label class="bratonien-label">Piwigo-Galerieordner</label><input name="nc_gallery_root" value="'+escapeHtml(legacy.gallery_root)+'" required>'+
+              '<label class="bratonien-label">Ruhezeit (Sek.)</label><input name="nc_quiet_seconds" type="number" min="0" value="'+escapeHtml(legacy.quiet_seconds)+'">'+
+              '<label class="bratonien-label">Maximale Wartezeit (Sek.)</label><input name="nc_max_wait_seconds" type="number" min="60" value="'+escapeHtml(legacy.max_wait_seconds)+'">'+
+              '<label class="bratonien-label">Vollprüfung nach (Sek.)</label><input name="nc_full_sync_seconds" type="number" min="300" value="'+escapeHtml(legacy.full_sync_seconds)+'">'+
+            '</div></details>'+
+            '<div class="bratonien-actions" style="margin-top:1rem"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_update_local">Änderungen speichern</button><button class="buttonLike" type="button" data-local-edit-cancel>Abbrechen</button></div></form>';
+          var form=content.querySelector('[data-local-edit-form]');
+          form.querySelector('[data-local-edit-cancel]').addEventListener('click',function(){dialog.close();});
+          form.querySelector('[data-add-storage]').addEventListener('click',function(){form.querySelector('[data-storage-list]').insertAdjacentHTML('beforeend',storageRow({}));});
+          form.addEventListener('click',function(event){var remove=event.target.closest('[data-remove-storage]');if(remove){var row=remove.closest('[data-storage-row]');if(row)row.remove();}});
+        })
+        .catch(function(error){content.innerHTML='<p class="bratonien-main-cache__warning"><strong>Bearbeiten nicht möglich:</strong> '+escapeHtml(error.message||String(error))+'</p>';});
+    }
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_edit_start"]')).forEach(function(button){var form=button.closest('form');if(form)form.remove();});
+
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_delete"]')).forEach(function(deleteButton){
+      var deleteForm=deleteButton.closest('form');var card=deleteButton.closest('details');if(!deleteForm||!card)return;
+      var idInput=deleteForm.querySelector('input[name="connection_id"]');if(!idInput)return;var id=idInput.value;
+      var actions=deleteForm.parentElement;if(!actions)return;
+      var text=card.textContent||'';var isLocal=text.indexOf('bestehende Legacy-Konfiguration')!==-1;
+      if(isLocal){
+        var edit=document.createElement('button');edit.type='button';edit.className='buttonLike';edit.textContent='Bearbeiten';edit.addEventListener('click',function(){openLocalEditor(id);});actions.insertBefore(edit,deleteForm);
+        actions.insertBefore(makePostButton('Auf WebDAV migrieren','nc_connector_migrate_start',id,'migrate'),deleteForm);
+      }else{
+        actions.insertBefore(makePostButton('Bearbeiten','nc_connector_edit_start',id,'edit'),deleteForm);
+      }
+    });
+  }
+
   function initNCConnectorPolling(){
     var section=document.getElementById('nc-connector');if(!section)return;
     var endpoint='plugins/bratonien_tools/nc-connector-status.php';
@@ -144,7 +262,7 @@
     poll();schedule();
   }
 
-  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectorPolling();}
+  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectionEditing();initNCConnectorPolling();}
   if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',initAll);else initAll();
 })();
 </script>

template/nc_connector_admin.tpl

@@ -1,6 +1,6 @@
 <section class="bratonien-section" id="nc-connector">
   <h3>NC Connector</h3>
-  <p class="bratonien-section__intro">Verbindet Nextcloud per WebDAV mit Piwigo und hält die ausgewählten Bilder automatisch aktuell.</p>
+  <p class="bratonien-section__intro">Verbindet Nextcloud mit Piwigo und hält freigegebene Bilder automatisch aktuell.</p>
 
   {assign var=nc_system_available value=isset($NC_CONNECTOR.system)}
 
@@ -8,7 +8,7 @@
     <div class="bratonien-card">
       <h4>Status</h4>
       <div class="bratonien-form-grid">
-        <span class="bratonien-label">WebDAV-Verbindungen</span><strong>{$NC_CONNECTOR.connection_count|escape:html}</strong>
+        <span class="bratonien-label">Verbindungen</span><strong>{$NC_CONNECTOR.connection_count|escape:html}</strong>
         <span class="bratonien-label">Automatischer Abgleich</span><strong>{if $nc_system_available && $NC_CONNECTOR.system.timer_active && $NC_CONNECTOR.system.timer_enabled}Aktiv{else}Nicht aktiv{/if}</strong>
         <span class="bratonien-label">Letzter Lauf</span><strong data-nc-last-run>{if $nc_system_available}{$NC_CONNECTOR.system.last_run_label|escape:html}{else}Nicht verfügbar{/if}</strong>
         <span class="bratonien-label">Nächster Lauf</span><strong data-nc-next-run>{if $nc_system_available}{$NC_CONNECTOR.system.next_run_label|escape:html}{else}Nicht verfügbar{/if}</strong>
@@ -21,9 +21,10 @@
 
     <div class="bratonien-card">
       <h4>Neue Verbindung</h4>
-      <p class="bratonien-base-note">Nextcloud wird ausschließlich per WebDAV angebunden.</p>
+      <p class="bratonien-base-note">Für die normale Einrichtung empfehlen wir den Assistenten.</p>
       <div class="bratonien-actions">
-        <button class="buttonLike" type="button" id="bratonien-nc-wizard-open">WebDAV-Verbindung anlegen</button>
+        <button class="buttonLike" type="button" id="bratonien-nc-wizard-open">Mit Assistent anlegen</button>
+        <button class="buttonLike" type="button" id="bratonien-nc-technical-open">Ohne Assistent anlegen</button>
       </div>
     </div>
   </div>
@@ -32,21 +33,32 @@
     <div style="padding:1.25rem 1.5rem">
       <div style="display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem">
         <div>
-          <h4 style="margin:0">Neue WebDAV-Verbindung</h4>
+          <h4 style="margin:0">Neue Verbindung</h4>
           <p class="bratonien-base-note" style="margin:.35rem 0 0"><strong>
-            {if $NC_CONNECTOR.wizard.step == 1}Anmeldung
-            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_stage == 'mounts'}Verzeichnisse auswählen
-            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_complete}Verbindung benennen
-            {elseif $NC_CONNECTOR.wizard.step == 3}Piwigo-API
-            {elseif $NC_CONNECTOR.wizard.step == 4}Abschluss
-            {else}Einrichtung{/if}
+            {if $NC_CONNECTOR.wizard.step == 1}
+              Anmeldung
+            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_stage == 'database_details'}
+              Datenbank prüfen
+            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_stage == 'mounts' && !$NC_CONNECTOR.wizard.directory_selection_ready}
+              Speicher zuordnen
+            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_stage == 'mounts' && $NC_CONNECTOR.wizard.directory_selection_ready}
+              Verzeichnisse auswählen
+            {elseif $NC_CONNECTOR.wizard.step == 2 && $NC_CONNECTOR.wizard.technical_complete}
+              Verbindung benennen
+            {elseif $NC_CONNECTOR.wizard.step == 3}
+              Piwigo-API
+            {elseif $NC_CONNECTOR.wizard.step == 4}
+              Abschluss
+            {else}
+              Einrichtung
+            {/if}
           </strong></p>
         </div>
         <button class="buttonLike" type="button" id="bratonien-nc-wizard-close">Schließen</button>
       </div>
 
       {if $NC_CONNECTOR.wizard.step == 1}
-        <p class="bratonien-base-note">Adresse und Nextcloud-Zugang genügen. Der Assistent prüft HTTP/HTTPS und anschließend den WebDAV-Zugriff des angemeldeten Benutzers.</p>
+        <p class="bratonien-base-note">Adresse und Zugang reichen für den ersten Scan. Der Assistent prüft den erreichbaren Web-Zugang automatisch.</p>
         <form method="post" data-bratonien-wizard-form>
           <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
           <div class="bratonien-form-grid">
@@ -61,70 +73,113 @@
         </form>
 
       {elseif $NC_CONNECTOR.wizard.step == 2}
-        <p class="bratonien-base-note"><strong>Nextcloud wurde gefunden.</strong> Angezeigt werden ausschließlich Verzeichnisse des angemeldeten Nextcloud-Benutzers.</p>
+        <p class="bratonien-base-note"><strong>Nextcloud wurde gefunden.</strong> Für den Datenzugriff wird die bekannte Reader-Verbindung verwendet. Verzeichnisse werden ausschließlich mit dem angemeldeten Nextcloud-Benutzer gelesen.</p>
         <div class="bratonien-form-grid">
           <span class="bratonien-label">Adresse</span><strong>{$NC_CONNECTOR.wizard.base_url|escape:html}</strong>
           <span class="bratonien-label">Version</span><strong>{if $NC_CONNECTOR.wizard.version}{$NC_CONNECTOR.wizard.version|escape:html}{else}Nicht gemeldet{/if}</strong>
           <span class="bratonien-label">Angemeldet als</span><strong>{$NC_CONNECTOR.wizard.username|escape:html}{if $NC_CONNECTOR.wizard.display_name} · {$NC_CONNECTOR.wizard.display_name|escape:html}{/if}</strong>
         </div>
 
-        {if $NC_CONNECTOR.wizard.technical_stage == 'mounts' && $NC_CONNECTOR.wizard.directory_selection_ready}
+        {if $NC_CONNECTOR.wizard.technical_stage == 'database_details'}
           <hr>
-          <h5>Verzeichnisse auswählen</h5>
-          <div class="bratonien-form-grid">
-            <span class="bratonien-label">Ausgewählt</span>
-            <div>
-              {if $NC_CONNECTOR.wizard.directory_selected|@count > 0}
-                {foreach from=$NC_CONNECTOR.wizard.directory_selected item=selected_path}
-                  <form method="post" class="bratonien-actions" style="margin:.25rem 0" data-bratonien-wizard-form>
+          <h5>Datenbank-Adresse prüfen</h5>
+          <p class="bratonien-base-note">Die bekannte Reader-Verbindung konnte mit der gespeicherten Adresse nicht bestätigt werden.</p>
+          {if $NC_CONNECTOR.wizard.technical_error}<details><summary>Technische Details</summary><p class="bratonien-main-cache__warning">{$NC_CONNECTOR.wizard.technical_error|escape:html}</p></details>{/if}
+          <form method="post" data-bratonien-wizard-form>
+            <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+            <div class="bratonien-form-grid">
+              <label class="bratonien-label">Datenbank-Adresse</label><input name="nc_wizard_db_host" type="text" value="{$NC_CONNECTOR.wizard.db_host|escape:html}" required>
+              <label class="bratonien-label">Port</label><input name="nc_wizard_db_port" type="number" min="1" max="65535" value="{$NC_CONNECTOR.wizard.db_port|escape:html}" required>
+              <label class="bratonien-label">Datenbank</label><input name="nc_wizard_db_database" type="text" value="{$NC_CONNECTOR.wizard.db_database|escape:html}" required>
+            </div>
+            <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_technical">Erneut prüfen</button></p>
+          </form>
+
+        {elseif $NC_CONNECTOR.wizard.technical_stage == 'mounts'}
+          <hr>
+          {if $NC_CONNECTOR.wizard.directory_selection_ready}
+            <h5>Verzeichnisse auswählen</h5>
+            <p class="bratonien-base-note">Es werden nur Verzeichnisse angezeigt, auf die <strong>{$NC_CONNECTOR.wizard.username|escape:html}</strong> in Nextcloud Zugriff hat. Mehrere Verzeichnisse können hinzugefügt werden. Bleibt die Auswahl leer, wird automatisch das Stammverzeichnis verwendet.</p>
+
+            <div class="bratonien-form-grid">
+              <span class="bratonien-label">Ausgewählt</span>
+              <div>
+                {if $NC_CONNECTOR.wizard.directory_selected|@count > 0}
+                  {foreach from=$NC_CONNECTOR.wizard.directory_selected item=selected_path}
+                    <form method="post" class="bratonien-actions" style="margin:.25rem 0" data-bratonien-wizard-form>
+                      <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+                      <input type="hidden" name="nc_wizard_directory_remove" value="{$selected_path|escape:html}">
+                      <strong style="flex:1">{if $selected_path}{$selected_path|escape:html}{else}Stammverzeichnis{/if}</strong>
+                      <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_remove">Entfernen</button>
+                    </form>
+                  {/foreach}
+                {else}
+                  <span class="bratonien-base-note">Keine Auswahl – Stammverzeichnis wird verwendet.</span>
+                {/if}
+              </div>
+
+              <span class="bratonien-label">Aktueller Ordner</span><strong>/{if $NC_CONNECTOR.wizard.directory_path}{$NC_CONNECTOR.wizard.directory_path|escape:html}{/if}</strong>
+            </div>
+
+            <div class="bratonien-actions" style="margin:.75rem 0">
+              <form method="post" data-bratonien-wizard-form>
+                <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+                <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_add">Diesen Ordner hinzufügen</button>
+              </form>
+              {if $NC_CONNECTOR.wizard.directory_path}
+                <form method="post" data-bratonien-wizard-form>
+                  <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+                  <input type="hidden" name="nc_wizard_directory_path" value="{$NC_CONNECTOR.wizard.directory_parent|escape:html}">
+                  <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_browse">Eine Ebene hoch</button>
+                </form>
+              {/if}
+            </div>
+
+            <div style="margin:.75rem 0">
+              {if $NC_CONNECTOR.wizard.directory_children|@count > 0}
+                {foreach from=$NC_CONNECTOR.wizard.directory_children item=directory_name key=directory_path}
+                  <form method="post" style="margin:.3rem 0" data-bratonien-wizard-form>
                     <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
-                    <input type="hidden" name="nc_wizard_directory_remove" value="{$selected_path|escape:html}">
-                    <strong style="flex:1">{if $selected_path}{$selected_path|escape:html}{else}Stammverzeichnis{/if}</strong>
-                    <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_remove">Entfernen</button>
+                    <input type="hidden" name="nc_wizard_directory_path" value="{$directory_path|escape:html}">
+                    <button class="buttonLike" style="width:100%;text-align:left" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_browse">📁 {$directory_name|escape:html}</button>
                   </form>
                 {/foreach}
               {else}
-                <span class="bratonien-base-note">Noch kein Verzeichnis ausgewählt.</span>
+                <p class="bratonien-base-note">Keine Unterordner vorhanden.</p>
               {/if}
             </div>
-            <span class="bratonien-label">Aktueller Ordner</span><strong>/{if $NC_CONNECTOR.wizard.directory_path}{$NC_CONNECTOR.wizard.directory_path|escape:html}{/if}</strong>
-          </div>
 
-          <div class="bratonien-actions" style="margin:.75rem 0">
             <form method="post" data-bratonien-wizard-form>
               <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
-              <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_add">Diesen Ordner hinzufügen</button>
-            </form>
-            {if $NC_CONNECTOR.wizard.directory_path}
-              <form method="post" data-bratonien-wizard-form>
-                <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
-                <input type="hidden" name="nc_wizard_directory_path" value="{$NC_CONNECTOR.wizard.directory_parent|escape:html}">
-                <button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_browse">Eine Ebene hoch</button>
-              </form>
-            {/if}
-          </div>
-
-          <div style="margin:.75rem 0">
-            {if $NC_CONNECTOR.wizard.directory_children|@count > 0}
-              {foreach from=$NC_CONNECTOR.wizard.directory_children item=directory_name key=directory_path}
-                <form method="post" style="margin:.3rem 0" data-bratonien-wizard-form>
-                  <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
-                  <input type="hidden" name="nc_wizard_directory_path" value="{$directory_path|escape:html}">
-                  <button class="buttonLike" style="width:100%;text-align:left" type="submit" name="bratonien_tool" value="nc_connector_wizard_directory_browse">📁 {$directory_name|escape:html}</button>
-                </form>
+              {foreach from=$NC_CONNECTOR.wizard.storage_candidates item=storage key=storage_index}
+                <input type="hidden" name="nc_wizard_storage_mount[{$storage_index|escape:html}]" value="{$storage.local_mount|escape:html}">
               {/foreach}
-            {else}
-              <p class="bratonien-base-note">Keine Unterordner vorhanden.</p>
-            {/if}
-          </div>
+              <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_mounts">Verzeichnisse übernehmen</button></p>
+            </form>
+          {else}
+            <h5>Speicherort bestätigen</h5>
+            <p class="bratonien-base-note">Die Datenquelle wurde gefunden. Ein technischer Speicherort konnte nicht automatisch zugeordnet werden.</p>
+            <form method="post" data-bratonien-wizard-form>
+              <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+              <div class="bratonien-form-grid">
+                {foreach from=$NC_CONNECTOR.wizard.storage_candidates item=storage key=storage_index}
+                  <span class="bratonien-label">Speicher {$storage_index+1}</span>
+                  {if $storage.local_mount}
+                    <strong>Automatisch erkannt</strong>
+                    <input type="hidden" name="nc_wizard_storage_mount[{$storage_index|escape:html}]" value="{$storage.local_mount|escape:html}">
+                  {else}
+                    <input name="nc_wizard_storage_mount[{$storage_index|escape:html}]" type="text" placeholder="Eingebundener Speicherpfad" required>
+                  {/if}
+                {/foreach}
+              </div>
+              <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_mounts">Speicher prüfen</button></p>
+            </form>
+          {/if}
 
-          <form method="post" data-bratonien-wizard-form>
-            <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
-            <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_mounts">Verzeichnisse übernehmen</button></p>
-          </form>
         {elseif $NC_CONNECTOR.wizard.technical_complete}
           <hr>
           <h5>Verbindung benennen</h5>
+          <p class="bratonien-base-note">Diese Verbindung verwendet ausschließlich den in Schritt 1 angemeldeten Nextcloud-Benutzer.</p>
           <form method="post" data-bratonien-wizard-form>
             <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
             <div class="bratonien-form-grid">
@@ -141,20 +196,20 @@
         </div>
 
       {elseif $NC_CONNECTOR.wizard.step == 3}
-        <p class="bratonien-base-note"><strong>WebDAV ist vorbereitet.</strong> Jetzt wird der Piwigo-Zugang dieser Verbindung geprüft.</p>
+        <p class="bratonien-base-note"><strong>Nextcloud ist vorbereitet.</strong> Jetzt wird der bevorzugte Piwigo-Zugang geprüft.</p>
         {if $NC_CONNECTOR.wizard.api_error}<p class="bratonien-main-cache__warning"><strong>API-Test fehlgeschlagen:</strong> {$NC_CONNECTOR.wizard.api_error|escape:html}</p>{/if}
         <form method="post" data-bratonien-wizard-form>
           <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
           <div class="bratonien-form-grid">
-            <label class="bratonien-label" for="nc_wizard_api_key_id">API-Schlüssel-ID</label><input id="nc_wizard_api_key_id" name="nc_wizard_api_key_id" type="text" autocomplete="off" value="{$NC_CONNECTOR.wizard._api_key_id|escape:html}">
-            <label class="bratonien-label" for="nc_wizard_api_key_secret">API-Geheimnis</label><input id="nc_wizard_api_key_secret" name="nc_wizard_api_key_secret" type="password" autocomplete="off" value="{$NC_CONNECTOR.wizard._api_key_secret|escape:html}">
+            <label class="bratonien-label" for="nc_wizard_api_key_id">API-Schlüssel-ID</label><input id="nc_wizard_api_key_id" name="nc_wizard_api_key_id" type="text" autocomplete="off" value="{$NC_CONNECTOR.wizard._api_key_id|escape:html}" placeholder="leer = bereits gespeicherten Zugang testen">
+            <label class="bratonien-label" for="nc_wizard_api_key_secret">API-Geheimnis</label><input id="nc_wizard_api_key_secret" name="nc_wizard_api_key_secret" type="password" autocomplete="off" value="{$NC_CONNECTOR.wizard._api_key_secret|escape:html}" placeholder="leer = bereits gespeicherten Zugang testen">
           </div>
           <div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_api_test">API testen</button><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_api_skip" formnovalidate>Überspringen</button></div>
         </form>
         <form method="post" style="margin-top:1rem" data-bratonien-wizard-form><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_back">Zurück</button></form>
 
       {elseif $NC_CONNECTOR.wizard.step == 4}
-        <p class="bratonien-base-note"><strong>Fast fertig.</strong> Erst der letzte Button legt die WebDAV-Verbindung an.</p>
+        <p class="bratonien-base-note"><strong>Fast fertig.</strong> Die Verbindung wurde noch nicht angelegt. Erst der letzte Button übernimmt die Einstellungen.</p>
         <div class="bratonien-form-grid">
           <span class="bratonien-label">Verbindung</span><strong>{$NC_CONNECTOR.wizard.connection_name|escape:html}</strong>
           <span class="bratonien-label">Nextcloud</span><strong>{$NC_CONNECTOR.wizard.base_url|escape:html}</strong>
@@ -177,16 +232,44 @@
     </div>
   </dialog>
 
+  <details id="bratonien-nc-technical-create" class="bratonien-card" style="margin-top:1.5rem">
+    <summary style="display:none">Ohne Assistent anlegen</summary>
+    <h4>Technische Einrichtung</h4>
+    <p class="bratonien-main-cache__warning">Nur verwenden, wenn die technische Zuordnung bekannt ist. Falsche Pfade können die Synchronisierung auf den falschen Datenbestand richten.</p>
+    <form method="post">
+      <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+      <div class="bratonien-form-grid">
+        <label class="bratonien-label">Name</label><input name="nc_name" type="text" required>
+        <label class="bratonien-label">PostgreSQL-Host</label><input name="nc_host" type="text" required>
+        <label class="bratonien-label">PostgreSQL-Port</label><input name="nc_port" type="number" min="1" max="65535" value="5432" required>
+        <label class="bratonien-label">Datenbank</label><input name="nc_database" type="text" value="nextcloud" required>
+        <label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" type="text" required>
+        <label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" required>
+        <label class="bratonien-label">Source-View</label><input name="nc_source_view" type="text" value="piwigo_showcase_sources" required>
+        <label class="bratonien-label">Activity-View</label><input name="nc_activity_view" type="text" value="piwigo_showcase_activity" required>
+        <label class="bratonien-label">Piwigo-Galeriepfad</label><input name="nc_gallery_root" type="text" placeholder="/var/www/piwigo/galleries/nextcloud" required>
+        <label class="bratonien-label">Fallback-Benutzer</label><input name="nc_piwigo_user" type="text">
+        <label class="bratonien-label">Fallback-Passwort</label><input name="nc_piwigo_password" type="password" autocomplete="new-password">
+        <label class="bratonien-label">Ruhezeit</label><input name="nc_quiet_seconds" type="number" min="0" value="120">
+        <label class="bratonien-label">Maximale Wartezeit</label><input name="nc_max_wait_seconds" type="number" min="60" value="900">
+        <label class="bratonien-label">Vollprüfung nach</label><input name="nc_full_sync_seconds" type="number" min="300" value="86400">
+      </div>
+      <p><strong>Storage-Zuordnungen</strong></p><p class="bratonien-base-note">Format: Storage-ID | optionales Quellpräfix | lokaler Speicherpfad</p><textarea name="nc_storages" rows="4" style="width:100%" required></textarea>
+      <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_create_local">Verbindung anlegen</button></p>
+    </form>
+  </details>
+
   <div class="bratonien-card" style="margin-top:1.5rem">
-    <h4>Bestehende WebDAV-Verbindungen</h4>
+    <h4>Bestehende Verbindungen</h4>
     {if $NC_CONNECTOR.connection_count > 0}
       {foreach from=$NC_CONNECTOR.connections item=connection}
         <details style="margin:.6rem 0">
-          <summary><strong>{$connection.display_name|escape:html}</strong> · aktiv{if isset($connection.last_sync) && ($connection.last_sync.state == 'error' || $connection.last_sync.state == 'warning')} · Laufzeitproblem{/if}</summary>
+          <summary><strong>{$connection.display_name|escape:html}</strong> · {if $connection.enabled}aktiv{else}{$connection.takeover_state|escape:html}{/if}{if isset($connection.last_sync) && ($connection.last_sync.state == 'error' || $connection.last_sync.state == 'warning')} · Laufzeitproblem{/if}</summary>
           <div style="padding:.75rem 0">
             <form method="post" class="bratonien-actions"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}"><input name="connection_name" type="text" value="{$connection.name|escape:html}" required><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_update_name">Name speichern</button></form>
             <div class="bratonien-actions" style="margin-top:.6rem">
-              <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}"><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_delete" onclick="return confirm('WebDAV-Verbindung wirklich löschen? Die zugehörigen Piwigo-Inhalte dieser Verbindung werden entfernt; Nextcloud-Dateien bleiben unverändert.');">Löschen</button></form>
+              {if $connection.adapter == 'local' && !$connection.enabled}<form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_verify">Verbindung prüfen</button></form>{/if}
+              <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}"><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_delete" onclick="return confirm('Verbindung wirklich löschen? Die Verbindung wird sofort aus Bratonien Tools entfernt und beim nächsten Connector-Lauf auch aus der Laufzeit entfernt. Bilder in Nextcloud oder Piwigo werden nicht gelöscht.');">Löschen</button></form>
             </div>
             {if isset($connection.last_sync) && $connection.last_sync.timestamp > 0}
               <p class="bratonien-base-note"><strong>Letzter Abgleich:</strong> {$connection.last_sync.label|escape:html} · {$connection.last_sync.message|escape:html}</p>
@@ -198,21 +281,49 @@
             {else}
               <p class="bratonien-base-note"><strong>Laufzeit:</strong> Noch kein Laufstatus für diese Verbindung vorhanden.</p>
             {/if}
-            <p class="bratonien-base-note"><strong>Nextcloud:</strong> {$connection.config.nextcloud_url|escape:html}</p>
-            <p class="bratonien-base-note"><strong>Nextcloud-Benutzer:</strong> {$connection.user|escape:html}</p>
-            <p class="bratonien-base-note"><strong>Ausgewählte Wurzeln:</strong> {$connection.storage_count|escape:html}</p>
-            <p class="bratonien-base-note"><strong>Piwigo-Zugang:</strong> {if $connection.config.api_enabled}eigene API{elseif $connection.fallback_stored}Fallback{else}kein Zugang gespeichert{/if}</p>
+            {if isset($connection.config.api_enabled)}
+              <p class="bratonien-base-note"><strong>Piwigo-Zugang dieser Verbindung:</strong> {if $connection.config.api_enabled}eigene API{elseif $connection.fallback_stored}Fallback{else}kein Zugang gespeichert{/if}</p>
+            {else}
+              <p class="bratonien-base-note"><strong>Piwigo-Zugang:</strong> bestehende Legacy-Konfiguration</p>
+            {/if}
+            {if $connection.verification_checks|@count > 0}<details><summary>Letzte Prüfung</summary><ul>{foreach from=$connection.verification_checks item=check}<li>{if $check.ok}✓{else}✗{/if} {$check.name|escape:html}: {$check.detail|escape:html}</li>{/foreach}</ul></details>{/if}
+            <details style="margin-top:.75rem"><summary>Technische Einstellungen</summary>
+              {if $connection.enabled || $connection.takeover_state == 'active'}<p class="bratonien-main-cache__warning">Aktive Verbindungen können technisch nicht geändert werden.</p>{else}
+                <p class="bratonien-main-cache__warning">Nur ändern, wenn die technische Zuordnung bekannt ist.</p>
+                <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}">
+                  <div class="bratonien-form-grid">
+                    <label class="bratonien-label">PostgreSQL-Host</label><input name="nc_host" type="text" value="{$connection.config.host|escape:html}" required>
+                    <label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="{$connection.config.port|escape:html}" required>
+                    <label class="bratonien-label">Datenbank</label><input name="nc_database" type="text" value="{$connection.config.database|escape:html}" required>
+                    <label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" type="text" value="{$connection.config.user|escape:html}" required>
+                    <label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" placeholder="leer = unverändert">
+                    <label class="bratonien-label">Source-View</label><input name="nc_source_view" type="text" value="{$connection.config.source_view|escape:html}" required>
+                    <label class="bratonien-label">Activity-View</label><input name="nc_activity_view" type="text" value="{$connection.config.activity_view|escape:html}" required>
+                    <label class="bratonien-label">Piwigo-Galeriepfad</label><input name="nc_gallery_root" type="text" value="{$connection.config.gallery_root|escape:html}" required>
+                    <label class="bratonien-label">Ruhezeit</label><input name="nc_quiet_seconds" type="number" min="0" value="{$connection.config.quiet_seconds|escape:html}">
+                    <label class="bratonien-label">Maximale Wartezeit</label><input name="nc_max_wait_seconds" type="number" min="60" value="{$connection.config.max_wait_seconds|escape:html}">
+                    <label class="bratonien-label">Vollprüfung nach</label><input name="nc_full_sync_seconds" type="number" min="300" value="{$connection.config.full_sync_seconds|escape:html}">
+                  </div>
+                  <p><strong>Storage-Zuordnungen</strong></p><p class="bratonien-base-note">Format: Storage-ID | optionales Quellpräfix | lokaler Speicherpfad</p><textarea name="nc_storages" rows="4" style="width:100%" required>{$connection.storage_text|escape:html}</textarea>
+                  <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_update_technical">Technische Einstellungen speichern</button></p>
+                </form>
+              {/if}
+            </details>
           </div>
         </details>
       {/foreach}
-    {else}<p class="bratonien-base-note">Noch keine WebDAV-Verbindung vorhanden.</p>{/if}
+    {else}<p class="bratonien-base-note">Noch keine Verbindung vorhanden.</p>{/if}
   </div>
 
-  {if $NC_CONNECTOR.connection_count > 0}
-  <details class="bratonien-card" style="margin-top:1.5rem"><summary>Fallback-Zugang einer Verbindung ändern</summary>
-    <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><div class="bratonien-form-grid"><label class="bratonien-label">Verbindung</label><select name="connection_id" required>{foreach from=$NC_CONNECTOR.connections item=connection}<option value="{$connection.id|escape:html}">{$connection.name|escape:html}</option>{/foreach}</select><label class="bratonien-label">Piwigo-Benutzer</label><input name="nc_fallback_user" type="text" autocomplete="username"><label class="bratonien-label">Piwigo-Passwort</label><input name="nc_fallback_password" type="password" autocomplete="current-password"></div><div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_fallback_save">Fallback speichern</button><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_fallback_delete" formnovalidate>Fallback löschen</button></div></form>
+  <details class="bratonien-card" style="margin-top:1.5rem"><summary>Erweiterte Piwigo-Zugänge</summary>
+    <h4>Piwigo API</h4>
+    <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><div class="bratonien-form-grid"><label class="bratonien-label">API-Schlüssel-ID</label><input name="nc_piwigo_api_key_id" type="text" autocomplete="off" required><label class="bratonien-label">API-Geheimnis</label><input name="nc_piwigo_api_key_secret" type="password" autocomplete="off" required></div><div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_piwigo_api_test">API prüfen und speichern</button><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_piwigo_api_delete" formnovalidate>Gespeicherte API löschen</button></div></form>
+    <h4 style="margin-top:1rem">Fallback speichern</h4>
+    {if $NC_CONNECTOR.connection_count > 0}<form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><div class="bratonien-form-grid"><label class="bratonien-label">Verbindung</label><select name="connection_id" required>{foreach from=$NC_CONNECTOR.connections item=connection}<option value="{$connection.id|escape:html}">{$connection.name|escape:html}</option>{/foreach}</select><label class="bratonien-label">Piwigo-Benutzer</label><input name="nc_fallback_user" type="text" autocomplete="username"><label class="bratonien-label">Piwigo-Passwort</label><input name="nc_fallback_password" type="password" autocomplete="current-password"></div><div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_fallback_save">Fallback speichern</button><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_fallback_delete" formnovalidate>Fallback löschen</button></div></form>{/if}
+    <h4 style="margin-top:1rem">Einmaliger Fallback-Test</h4>
+    <p class="bratonien-base-note">Verwendet die eingegebenen Piwigo-Zugangsdaten einmalig und speichert sie nicht.</p>
+    <form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><div class="bratonien-form-grid"><label class="bratonien-label">Piwigo-Benutzer</label><input name="nc_fallback_user" type="text" required><label class="bratonien-label">Piwigo-Passwort</label><input name="nc_fallback_password" type="password" required></div><p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_fallback_once">Einmalig testen</button></p></form>
   </details>
-  {/if}
 
 {literal}
 <script>
@@ -220,6 +331,8 @@
   var dialog=document.getElementById('bratonien-nc-wizard-dialog');
   var openButton=document.getElementById('bratonien-nc-wizard-open');
   var closeButton=document.getElementById('bratonien-nc-wizard-close');
+  var technicalButton=document.getElementById('bratonien-nc-technical-open');
+  var technical=document.getElementById('bratonien-nc-technical-create');
   var key='bratonienNcWizardOpen';
   function openWizard(){try{sessionStorage.setItem(key,'1');}catch(e){} if(typeof dialog.showModal==='function'&&!dialog.open)dialog.showModal();else dialog.setAttribute('open','open');}
   function closeWizard(){try{sessionStorage.removeItem(key);}catch(e){} if(typeof dialog.close==='function')dialog.close();else dialog.removeAttribute('open');}
@@ -231,7 +344,8 @@
     dialog.querySelectorAll('form[data-bratonien-wizard-form]').forEach(function(form){form.addEventListener('submit',function(e){var s=e.submitter;try{if(s&&s.hasAttribute('data-bratonien-wizard-end'))sessionStorage.removeItem(key);else sessionStorage.setItem(key,'1');}catch(x){}});});
     try{if(sessionStorage.getItem(key)==='1')openWizard();}catch(e){}
   }
+  if(technicalButton&&technical)technicalButton.addEventListener('click',function(){technical.open=!technical.open;if(technical.open)technical.scrollIntoView(true);});
 })();
 </script>
 {/literal}
-</section>
+</section>