Technische NC-Anlage uebernimmt vorhandene API einmalig

NC-Verbindungen immer loeschbar und Laufzeitfehler sichtbar machen
Tombstone-Pfad pro NC-Verbindung aus Konfiguration bestimmen
2026-09-20 02:54:34 +00:00 · 2026-08-18 16:13:05 +02:00 · 2026-08-18 16:12:19 +02:00 · 2026-08-18 16:10:17 +02:00 · 2026-08-18 16:10:03 +02:00 · 2026-08-18 16:09:31 +02:00
12 changed files with 907 additions and 263 deletions
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,32 @@
+name: Syntax Check
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  syntax:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Repository auschecken
+        uses: actions/checkout@v4
+
+      - name: PHP installieren
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.2'
+          coverage: none
+
+      - name: PHP Syntax pruefen
+        shell: bash
+        run: |
+          set -euo pipefail
+          while IFS= read -r -d '' file; do
+            php -l "$file"
+          done < <(find . -type f -name '*.php' -print0)
+
+      - name: Python Syntax pruefen
+        shell: bash
+        run: |
+          set -euo pipefail
+          python3 -m compileall -q runtime
--- a/include/nc_connector_connection_scope.inc.php
+++ b/include/nc_connector_connection_scope.inc.php
@@ -0,0 +1,216 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_finish_connection_scoped()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$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)
+  {
+    $key = (string)$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';
+  $_POST['nc_connection_api_key_id']=$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'] ?? ''));
+  }
+
+  $payload = json_encode(array(
+    'v'=>2,
+    'db_password'=>$db_password,
+    'piwigo_user'=>$fallback_user,
+    'piwigo_password'=>$fallback_password,
+    'api_key_id'=>$api_key_id,
+    'api_key_secret'=>$api_key_secret,
+  ), 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) && array_key_exists('db_password', $decoded))
+  {
+    return array(
+      'v'=>2,
+      'db_password'=>(string)($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'] ?? ''),
+    );
+  }
+
+  return array(
+    'v'=>2,
+    'db_password'=>(string)$plain,
+    'piwigo_user'=>'',
+    'piwigo_password'=>'',
+    'api_key_id'=>'',
+    'api_key_secret'=>'',
+  );
+}
+
+function bratonien_tools_nc_connector_store_scoped_secret($id, array $connection, array $credentials)
+{
+  if (trim((string)($credentials['db_password'] ?? '')) === '') throw new RuntimeException('Das Datenbankpasswort der Verbindung fehlt.');
+  $payload = json_encode($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);
+
+  $config = is_array($connection['config'] ?? null) ? $connection['config'] : array();
+  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.');
+
+  $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($blob)."', config_json='".pwg_db_real_escape_string($config_json)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".(int)$id." LIMIT 1");
+}
+
+function bratonien_tools_nc_connector_fallback_save_scoped()
+{
+  $id = (int)($_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 für den Fallback müssen angegeben werden.');
+
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  $credentials = bratonien_tools_nc_connector_scoped_secret($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 Verbindung gespeichert.');
+}
+
+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 Verbindung wurde gelöscht. Ein vorhandener API-Zugang blieb unverändert.');
+}
--- a/include/nc_connector_create_api.inc.php
+++ b/include/nc_connector_create_api.inc.php
@@ -28,11 +28,23 @@ function bratonien_tools_nc_connector_create_local_api_first()
    throw new RuntimeException('Fallback-Benutzer und Fallback-Passwort muessen entweder beide angegeben oder beide leer gelassen werden.');
  }

-  $api = bratonien_tools_nc_api_credentials();
+  $wizard_auth_present = array_key_exists('nc_api_validated', $_POST);
  $validated_pending_api = (string)($_POST['nc_api_validated'] ?? '') === '1';
-  if (($api['key_id'] ?? '') === '' && $fallback_user === '' && !$validated_pending_api)
+  $api_key_id = trim((string)($_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('Es ist weder ein geprüfter Piwigo-API-Zugang noch ein Benutzername/Passwort-Fallback vorhanden.');
+    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);
@@ -42,7 +54,7 @@ function bratonien_tools_nc_connector_create_local_api_first()
  if (strpos($gallery_root, './') === 0)
  {
    $piwigo_root = realpath(PHPWG_ROOT_PATH);
-    if ($piwigo_root === false) throw new RuntimeException('Piwigo-Stammverzeichnis konnte nicht aufgelöst werden.');
+    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 === '' || $gallery_root[0] !== '/') throw new RuntimeException('Der Galerie-Pfad muss ein absoluter Pfad sein.');
@@ -60,7 +72,9 @@ function bratonien_tools_nc_connector_create_local_api_first()
    'max_wait_seconds'=>max(60,(int)($_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'=>'api-first',
+    '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)
  {
@@ -69,9 +83,19 @@ function bratonien_tools_nc_connector_create_local_api_first()
  bratonien_tools_nc_connector_view_name($config['source_view']);
  bratonien_tools_nc_connector_view_name($config['activity_view']);

+  $secret_payload = json_encode(array(
+    'v'=>2,
+    'db_password'=>(string)$_POST['nc_db_password'],
+    'piwigo_user'=>$fallback_user,
+    'piwigo_password'=>$fallback_password,
+    'api_key_id'=>$api_key_id,
+    'api_key_secret'=>$api_key_secret,
+  ), 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));
-  $secret_blob=bratonien_tools_nc_connector_encrypt_credentials((string)$_POST['nc_db_password'],$fallback_user,$fallback_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.');

@@ -90,6 +114,6 @@ function bratonien_tools_nc_connector_create_local_api_first()

  return array(
    'connection_id'=>$id,
-    'message'=>$fallback_user==='' ? 'Nextcloud-Verbindung wurde API-first ohne dauerhaft gespeicherten Benutzername/Passwort-Fallback angelegt. Bitte technisch pruefen und danach im LXC aktivieren.' : 'Nextcloud-Verbindung wurde API-first mit verschluesseltem Benutzername/Passwort-Fallback angelegt. Bitte technisch pruefen und danach im LXC aktivieren.'
+    'message'=>'Nextcloud-Verbindung wurde mit verbindungseigener Piwigo-Authentifizierung angelegt.'
  );
 }
--- a/include/nc_connector_wizard_flow.inc.php
+++ b/include/nc_connector_wizard_flow.inc.php
@@ -0,0 +1,26 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_save_technical_flow()
+{
+  $result = bratonien_tools_nc_wizard_save_technical_with_known_database();
+  $state = bratonien_tools_nc_wizard_state();
+
+  if ((string)($state['technical_stage'] ?? '') === 'mounts')
+  {
+    if (!empty($state['directory_selection_ready']))
+    {
+      bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    }
+    else
+    {
+      $state['mount_prompted'] = true;
+    }
+    bratonien_tools_nc_wizard_store($state);
+  }
+
+  return $result;
+}
--- a/include/nc_connector_wizard_user_scope.inc.php
+++ b/include/nc_connector_wizard_user_scope.inc.php
@@ -0,0 +1,367 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_wizard_webdav_list(array $state, $path = '')
+{
+  if (empty($state['scan_ok']) || trim((string)$state['base_url']) === '' || trim((string)$state['username']) === '' || (string)$state['_password'] === '')
+  {
+    throw new RuntimeException('Die Nextcloud-Sitzung des Assistenten ist nicht vollständig.');
+  }
+  if (!function_exists('curl_init')) throw new RuntimeException('cURL ist für die Verzeichnisauswahl nicht verfügbar.');
+
+  $path = trim((string)$path, '/');
+  if ($path !== '' && preg_match('#(^|/)\.\.(/|$)#', $path)) throw new RuntimeException('Ungültiger Verzeichnispfad.');
+
+  $segments = $path === '' ? array() : array_map('rawurlencode', explode('/', $path));
+  $user = rawurlencode((string)$state['username']);
+  $url = rtrim((string)$state['base_url'], '/').'/remote.php/dav/files/'.$user.'/'.implode('/', $segments);
+  if (substr($url, -1) !== '/') $url .= '/';
+
+  $body = '<?xml version="1.0"?><d:propfind xmlns:d="DAV:"><d:prop><d:resourcetype/><d:displayname/></d:prop></d:propfind>';
+  $ch = curl_init($url);
+  curl_setopt_array($ch, array(
+    CURLOPT_RETURNTRANSFER=>true,
+    CURLOPT_CUSTOMREQUEST=>'PROPFIND',
+    CURLOPT_POSTFIELDS=>$body,
+    CURLOPT_HTTPHEADER=>array('Depth: 1','Content-Type: application/xml; charset=utf-8'),
+    CURLOPT_HTTPAUTH=>CURLAUTH_BASIC,
+    CURLOPT_USERPWD=>(string)$state['username'].':'.(string)$state['_password'],
+    CURLOPT_CONNECTTIMEOUT=>8,
+    CURLOPT_TIMEOUT=>20,
+  ));
+  $response = curl_exec($ch);
+  $errno = curl_errno($ch);
+  $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+  curl_close($ch);
+
+  if ($response === false || $errno !== 0) throw new RuntimeException('Nextcloud-Verzeichnisse konnten nicht geladen werden.');
+  if ($status === 401 || $status === 403) throw new RuntimeException('Nextcloud hat den Zugriff auf dieses Verzeichnis abgelehnt.');
+  if ($status !== 207) throw new RuntimeException('Nextcloud-Verzeichnisabfrage antwortete mit HTTP '.$status.'.');
+
+  libxml_use_internal_errors(true);
+  $xml = simplexml_load_string((string)$response);
+  if ($xml === false) throw new RuntimeException('Nextcloud hat eine ungültige WebDAV-Antwort geliefert.');
+  $xml->registerXPathNamespace('d', 'DAV:');
+
+  $children = array();
+  foreach ($xml->xpath('//d:response') as $item)
+  {
+    $item->registerXPathNamespace('d', 'DAV:');
+    $hrefs = $item->xpath('d:href');
+    $collections = $item->xpath('d:propstat/d:prop/d:resourcetype/d:collection');
+    if (!$hrefs || !$collections) continue;
+
+    $href = rawurldecode((string)$hrefs[0]);
+    $href_path = (string)parse_url($href, PHP_URL_PATH);
+    $base_path = (string)parse_url($url, PHP_URL_PATH);
+    if (rtrim($href_path, '/') === rtrim($base_path, '/')) continue;
+
+    $name = basename(rtrim($href_path, '/'));
+    if ($name === '') continue;
+    $child_path = $path === '' ? $name : $path.'/'.$name;
+    $children[$child_path] = $name;
+  }
+  natcasesort($children);
+
+  $parent = '';
+  if ($path !== '')
+  {
+    $parts = explode('/', $path);
+    array_pop($parts);
+    $parent = implode('/', $parts);
+  }
+
+  return array('current'=>$path, 'parent'=>$parent, 'children'=>$children);
+}
+
+function bratonien_tools_nc_wizard_refresh_directory_state(array &$state, $path = null)
+{
+  if ($path === null) $path = (string)($state['directory_path'] ?? '');
+  $listing = bratonien_tools_nc_wizard_webdav_list($state, $path);
+  $state['directory_path'] = (string)$listing['current'];
+  $state['directory_parent'] = (string)$listing['parent'];
+  $state['directory_children'] = (array)$listing['children'];
+  if (!isset($state['directory_selected']) || !is_array($state['directory_selected'])) $state['directory_selected'] = array();
+}
+
+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($url_host),'db_port'=>'5432','db_database'=>'nextcloud','db_user'=>'','db_password_set'=>false,'_db_password'=>'',
+    'source_view'=>'piwigo_showcase_sources','activity_view'=>'piwigo_showcase_activity','gallery_root'=>rtrim(PHPWG_ROOT_PATH, '/').'/galleries/nextcloud',
+    'storages'=>array(),'storage_candidates'=>array(),'technical_stage'=>'auto_check','technical_source'=>'Automatische Prüfung','technical_error'=>'','technical_complete'=>false,
+    'directory_selection_ready'=>false,'directory_path'=>'','directory_parent'=>'','directory_children'=>array(),'directory_selected'=>array(),
+    'database_prompted'=>false,'mount_prompted'=>false,
+  ));
+
+  if (!bratonien_tools_nc_wizard_apply_known_database_profile($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.');
+  }
+
+  $known_storages = isset($state['storages']) && is_array($state['storages']) ? $state['storages'] : array();
+  try
+  {
+    bratonien_tools_nc_wizard_finish_data_access_for_selection($state, $known_storages);
+    if (!empty($state['directory_selection_ready']))
+    {
+      bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    }
+    else
+    {
+      $state['mount_prompted'] = true;
+    }
+  }
+  catch (Throwable $e)
+  {
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'database_details';
+    $state['database_prompted'] = true;
+    $state['technical_error'] = $e->getMessage();
+  }
+  bratonien_tools_nc_wizard_store($state);
+
+  if ($state['technical_stage'] === 'database_details') return array('message'=>'Nextcloud wurde gefunden. Die bekannte Reader-Verbindung konnte noch nicht vollständig bestätigt werden.');
+  if (empty($state['directory_selection_ready'])) return array('message'=>'Nextcloud und Datenzugriff wurden bestätigt. Der technische Speicherort muss einmal bestätigt werden.');
+  return array('message'=>'Nextcloud und Datenzugriff wurden bestätigt. Jetzt können die Verzeichnisse des angemeldeten Benutzers gewählt werden.');
+}
+
+function bratonien_tools_nc_wizard_directory_browse()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 2 || (string)$state['technical_stage'] !== 'mounts' || empty($state['directory_selection_ready'])) throw new RuntimeException('Die Verzeichnisauswahl ist in diesem Fenster nicht verfügbar.');
+  $path = trim((string)($_POST['nc_wizard_directory_path'] ?? ''), '/');
+  bratonien_tools_nc_wizard_refresh_directory_state($state, $path);
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>'Verzeichnis geöffnet.');
+}
+
+function bratonien_tools_nc_wizard_directory_add()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 2 || (string)$state['technical_stage'] !== 'mounts' || empty($state['directory_selection_ready'])) throw new RuntimeException('Die Verzeichnisauswahl ist in diesem Fenster nicht verfügbar.');
+  $path = trim((string)($state['directory_path'] ?? ''), '/');
+  $selected = isset($state['directory_selected']) && is_array($state['directory_selected']) ? $state['directory_selected'] : array();
+  if (!in_array($path, $selected, true)) $selected[] = $path;
+  $state['directory_selected'] = array_values($selected);
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>$path === '' ? 'Stammverzeichnis ausgewählt.' : 'Verzeichnis hinzugefügt.');
+}
+
+function bratonien_tools_nc_wizard_directory_remove()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  if ((int)$state['step'] !== 2 || empty($state['directory_selection_ready'])) throw new RuntimeException('Die Verzeichnisauswahl ist in diesem Fenster nicht verfügbar.');
+  $path = trim((string)($_POST['nc_wizard_directory_remove'] ?? ''), '/');
+  $selected = isset($state['directory_selected']) && is_array($state['directory_selected']) ? $state['directory_selected'] : array();
+  $state['directory_selected'] = array_values(array_filter($selected, function($value) use ($path) { return (string)$value !== $path; }));
+  bratonien_tools_nc_wizard_store($state);
+  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.');
+
+  $candidates = isset($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']) ? $_POST['nc_wizard_storage_mount'] : array();
+
+  // Erstes sichtbares Fenster: technische Mount-Zuordnung bestätigen.
+  if (empty($state['directory_selection_ready']))
+  {
+    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['mount_prompted'] = true;
+    $state['directory_selection_ready'] = true;
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'mounts';
+    $state['directory_path'] = '';
+    $state['directory_parent'] = '';
+    $state['directory_children'] = array();
+    $state['directory_selected'] = array();
+    bratonien_tools_nc_wizard_refresh_directory_state($state, '');
+    bratonien_tools_nc_wizard_store($state);
+    return array('message'=>'Speicherzuordnung wurde bestätigt. Jetzt können die Verzeichnisse ausgewählt werden.');
+  }
+
+  // Zweites sichtbares Fenster: Verzeichnisauswahl übernehmen.
+  $selected = isset($state['directory_selected']) && is_array($state['directory_selected']) ? $state['directory_selected'] : array();
+  if (!$selected) $selected = array('');
+  $storages = array();
+
+  foreach ($candidates as $candidate)
+  {
+    $mount = rtrim(trim((string)($candidate['local_mount'] ?? '')), '/');
+    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);
+
+    foreach ($selected as $directory)
+    {
+      $directory = trim((string)$directory, '/');
+      if ($directory !== '' && preg_match('#(^|/)\.\.(/|$)#', $directory)) throw new RuntimeException('Ungültige Verzeichnisauswahl.');
+      $storages[] = array(
+        'storage_id'=>(string)($candidate['storage_id'] ?? ''),
+        'source_prefix'=>trim((string)($candidate['source_prefix'] ?? ''), '/'),
+        'local_mount'=>$mount,
+        'include_prefix'=>$directory,
+      );
+    }
+  }
+
+  $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_select_current_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.');
+  $connection_name = trim((string)($_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);
+  return array('message'=>'Nextcloud-Benutzer übernommen. Jetzt folgt der Piwigo-API-Zugang.');
+}
+
+function bratonien_tools_nc_wizard_back()
+{
+  $state = bratonien_tools_nc_wizard_state();
+  $step = (int)($state['step'] ?? 1);
+  if ($step <= 1) return array('message'=>'Bereits am Anfang des Assistenten.');
+
+  if ($step === 4)
+  {
+    // Abschluss -> API
+    $state['step'] = 3;
+  }
+  elseif ($step === 3)
+  {
+    // API -> Verbindungsname
+    $state['step'] = 2;
+    $state['technical_complete'] = true;
+    $state['technical_stage'] = 'ready';
+    $state['directory_selection_ready'] = false;
+  }
+  elseif (!empty($state['technical_complete']))
+  {
+    // Verbindungsname -> Verzeichnisauswahl
+    $state['technical_complete'] = false;
+    $state['technical_stage'] = 'mounts';
+    $state['directory_selection_ready'] = true;
+    bratonien_tools_nc_wizard_refresh_directory_state($state);
+  }
+  elseif ((string)($state['technical_stage'] ?? '') === 'mounts' && !empty($state['directory_selection_ready']))
+  {
+    // Verzeichnisauswahl -> vorher tatsächlich sichtbares Fenster.
+    if (!empty($state['mount_prompted']))
+    {
+      $state['directory_selection_ready'] = false;
+    }
+    elseif (!empty($state['database_prompted']))
+    {
+      $state['technical_stage'] = 'database_details';
+      $state['directory_selection_ready'] = false;
+    }
+    else
+    {
+      $state['step'] = 1;
+    }
+  }
+  elseif ((string)($state['technical_stage'] ?? '') === 'mounts')
+  {
+    // Mount-Zuordnung -> Datenbankfenster, falls es sichtbar war, sonst Anmeldung.
+    if (!empty($state['database_prompted']))
+    {
+      $state['technical_stage'] = 'database_details';
+    }
+    else
+    {
+      $state['step'] = 1;
+    }
+  }
+  elseif ((string)($state['technical_stage'] ?? '') === 'database_details')
+  {
+    // Datenbankfenster -> Anmeldung.
+    $state['step'] = 1;
+  }
+  else
+  {
+    $state['step'] = 1;
+  }
+
+  bratonien_tools_nc_wizard_store($state);
+  return array('message'=>'Ein Fenster zurück.');
+}
--- a/include/tool_registry.inc.php
+++ b/include/tool_registry.inc.php
@@ -23,6 +23,9 @@ 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');

 function bratonien_tools_get_tools()
 {
@@ -48,25 +51,29 @@ function bratonien_tools_get_tools()
    '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_delete' => array('handler' => 'bratonien_tools_nc_connector_delete'),
+    'nc_connector_delete' => array('handler' => 'bratonien_tools_nc_connector_delete_any'),
    '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_with_known_database'),
-    'nc_connector_wizard_save_technical' => array('handler' => 'bratonien_tools_nc_wizard_save_technical_with_known_database'),
-    'nc_connector_wizard_save_mounts' => array('handler' => 'bratonien_tools_nc_wizard_save_mounts_with_directories'),
-    'nc_connector_wizard_select_user' => array('handler' => 'bratonien_tools_nc_wizard_select_user'),
+    'nc_connector_wizard_scan' => array('handler' => 'bratonien_tools_nc_wizard_scan_user_scoped'),
+    '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'),
+    'nc_connector_wizard_save_mounts' => array('handler' => 'bratonien_tools_nc_wizard_save_mounts_server_side'),
+    'nc_connector_wizard_select_user' => array('handler' => 'bratonien_tools_nc_wizard_select_current_user'),
    'nc_connector_wizard_api_test' => array('handler' => 'bratonien_tools_nc_wizard_api_test'),
    'nc_connector_wizard_api_skip' => array('handler' => 'bratonien_tools_nc_wizard_api_skip'),
-    'nc_connector_wizard_finish' => array('handler' => 'bratonien_tools_nc_wizard_finish_with_directories'),
+    'nc_connector_wizard_finish' => array('handler' => 'bratonien_tools_nc_wizard_finish_connection_scoped'),
+    '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_managed'),
+    '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'),
-    'nc_connector_fallback_delete' => array('handler' => 'bratonien_tools_nc_connector_fallback_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'),
--- a/main.inc.php
+++ b/main.inc.php
@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.4.5
+Version: 0.9.4.9
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
--- a/nc-connector-install.php
+++ b/nc-connector-install.php
@@ -58,7 +58,6 @@ function decrypt_install_credentials($blob, $hexKey)
  $decoded = json_decode($plain, true);
  if (!is_array($decoded))
  {
-    // Backward compatibility: old connections stored only the DB password.
    return array('db_password'=>$plain,'piwigo_user'=>'','piwigo_password'=>'');
  }
  if (empty($decoded['db_password'])) fail_install('Datenbankpasswort fehlt in den Connector-Zugangsdaten.');
@@ -124,10 +123,13 @@ try
    @unlink($piwigoPasswordPath);
  }

-  $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount');
+  $storageLines = array('# storage_id<TAB>source_prefix<TAB>local_mount<TAB>include_prefix');
  foreach ((array)($config['storages'] ?? array()) as $storage)
  {
-    $storageLines[] = (string)($storage['storage_id'] ?? '')."\t".trim((string)($storage['source_prefix'] ?? ''), '/')."\t".(string)($storage['local_mount'] ?? '');
+    $storageLines[] = (string)($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);
--- a/nc-wizard-directories.php
+++ b/nc-wizard-directories.php
@@ -1,44 +0,0 @@
-<?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('state'=>'unavailable','message'=>'Bratonien Tools ist nicht aktiv.'));
-  exit;
-}
-if (!function_exists('is_admin') || !is_admin())
-{
-  http_response_code(403);
-  echo json_encode(array('state'=>'forbidden','message'=>'Administratorrechte erforderlich.'));
-  exit;
-}
-
-require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector.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');
-
-try
-{
-  $state = bratonien_tools_nc_wizard_state();
-  echo json_encode(array(
-    'state'=>'ok',
-    'ready'=>!empty($state['directory_selection_ready']),
-    'storages'=>bratonien_tools_nc_wizard_directory_options($state),
-  ), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-}
-catch (Throwable $e)
-{
-  http_response_code(500);
-  echo json_encode(array('state'=>'error','message'=>$e->getMessage()), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-}
--- a/runtime/lib/piwigo-sync.php
+++ b/runtime/lib/piwigo-sync.php
@@ -14,19 +14,13 @@ function fail_sync($message)
 function http_error_detail($body)
 {
  $body = trim((string)$body);
-  if ($body === '')
-  {
-    return '';
-  }
+  if ($body === '') return '';

  $decoded = json_decode($body, true);
  if (is_array($decoded))
  {
    $detail = (string)($decoded['message'] ?? $decoded['err'] ?? '');
-    if ($detail !== '')
-    {
-      return $detail;
-    }
+    if ($detail !== '') return $detail;
  }

  if (function_exists('simplexml_load_string'))
@@ -38,19 +32,12 @@ function http_error_detail($body)
    if ($xml !== false)
    {
      $detail = trim((string)($xml->message ?? $xml->err ?? ''));
-      if ($detail !== '')
-      {
-        return $detail;
-      }
+      if ($detail !== '') return $detail;
    }
  }

  $plain = trim(preg_replace('/\s+/', ' ', strip_tags($body)));
-  if ($plain === '')
-  {
-    return '';
-  }
-  return mb_substr($plain, 0, 500);
+  return $plain === '' ? '' : mb_substr($plain, 0, 500);
 }

 function http_request($url, array $fields, array $headers = array(), $cookie_file = null)
@@ -65,10 +52,7 @@ function http_request($url, array $fields, array $headers = array(), $cookie_fil
    CURLOPT_FOLLOWLOCATION => false,
    CURLOPT_USERAGENT => 'Bratonien-NC-Connector',
  );
-  if ($headers)
-  {
-    $options[CURLOPT_HTTPHEADER] = $headers;
-  }
+  if ($headers) $options[CURLOPT_HTTPHEADER] = $headers;
  if ($cookie_file !== null)
  {
    $options[CURLOPT_COOKIEJAR] = $cookie_file;
@@ -81,42 +65,29 @@ function http_request($url, array $fields, array $headers = array(), $cookie_fil
  $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
  curl_close($ch);

-  if ($body === false || $errno !== 0)
-  {
-    fail_sync('HTTP-Aufruf fehlgeschlagen: '.$error);
-  }
+  if ($body === false || $errno !== 0) fail_sync('HTTP-Aufruf fehlgeschlagen: '.$error);
  if ($http < 200 || $http >= 300)
  {
    $detail = http_error_detail((string)$body);
    fail_sync('HTTP-Aufruf antwortete mit Status '.$http.($detail !== '' ? ': '.$detail : '.'));
  }
-
  return (string)$body;
 }

 function xml_value_sync(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)
  {
    $value = xml_value_sync($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 $result;
 }
@@ -126,34 +97,22 @@ function decode_ws($body)
  $decoded = json_decode((string)$body, true);
  if (!is_array($decoded))
  {
-    if (!function_exists('simplexml_load_string'))
-    {
-      fail_sync('Piwigo lieferte XML, aber SimpleXML ist nicht verfuegbar.');
-    }
+    if (!function_exists('simplexml_load_string')) fail_sync('Piwigo lieferte XML, aber SimpleXML ist nicht verfuegbar.');
    $previous = libxml_use_internal_errors(true);
    $xml = simplexml_load_string((string)$body);
    libxml_clear_errors();
    libxml_use_internal_errors($previous);
-    if ($xml === false || $xml->getName() !== 'rsp')
-    {
-      fail_sync('Piwigo lieferte weder gueltiges JSON noch eine gueltige XML-Webservice-Antwort.');
-    }
+    if ($xml === false || $xml->getName() !== 'rsp') fail_sync('Piwigo lieferte weder gueltiges JSON noch eine gueltige XML-Webservice-Antwort.');
    $decoded = array('stat'=>(string)$xml['stat']);
    foreach ($xml->children() as $name => $child)
    {
      $value = xml_value_sync($child);
      if (array_key_exists($name, $decoded))
      {
-        if (!is_array($decoded[$name]) || !array_is_list($decoded[$name]))
-        {
-          $decoded[$name] = array($decoded[$name]);
-        }
+        if (!is_array($decoded[$name]) || !array_is_list($decoded[$name])) $decoded[$name] = array($decoded[$name]);
        $decoded[$name][] = $value;
      }
-      else
-      {
-        $decoded[$name] = $value;
-      }
+      else $decoded[$name] = $value;
    }
  }
  if (($decoded['stat'] ?? '') !== 'ok')
@@ -161,36 +120,22 @@ function decode_ws($body)
    $message = (string)($decoded['message'] ?? $decoded['err'] ?? 'Piwigo-Aufruf wurde abgelehnt.');
    fail_sync($message);
  }
-
-  if (array_key_exists('result', $decoded))
-  {
-    return $decoded['result'];
-  }
-
+  if (array_key_exists('result', $decoded)) return $decoded['result'];
  unset($decoded['stat']);
  return $decoded;
 }

 function decrypt_blob($blob, $hex_key)
 {
-  if (!preg_match('/^[a-f0-9]{64}$/', (string)$hex_key))
-  {
-    fail_sync('Connector-Schluessel ist ungueltig.');
-  }
+  if (!preg_match('/^[a-f0-9]{64}$/', (string)$hex_key)) fail_sync('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)($payload['v'] ?? 0) !== 1)
-  {
-    fail_sync('Gespeicherte Zugangsdaten haben ein unbekanntes Format.');
-  }
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) fail_sync('Gespeicherte 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($hex_key), OPENSSL_RAW_DATA, $iv, $tag);
-  if ($plain === false)
-  {
-    fail_sync('Gespeicherte Zugangsdaten konnten nicht entschluesselt werden.');
-  }
+  if ($plain === false) fail_sync('Gespeicherte Zugangsdaten konnten nicht entschluesselt werden.');
  return (string)$plain;
 }

@@ -200,77 +145,64 @@ try
  $piwigo_root = rtrim((string)($options['piwigo-root'] ?? ''), '/');
  $connection_id = (int)($options['connection-id'] ?? 0);
  $base_url = rtrim((string)($options['base-url'] ?? 'http://127.0.0.1'), '/');
-
-  if ($piwigo_root === '' || $connection_id < 1)
-  {
-    fail_sync('Parameter --piwigo-root und --connection-id werden benoetigt.');
-  }
-  if (!function_exists('curl_init'))
-  {
-    fail_sync('PHP-cURL ist nicht verfuegbar.');
-  }
+  if ($piwigo_root === '' || $connection_id < 1) fail_sync('Parameter --piwigo-root und --connection-id werden benoetigt.');
+  if (!function_exists('curl_init')) fail_sync('PHP-cURL ist nicht verfuegbar.');

  $db_config = $piwigo_root.'/local/config/database.inc.php';
-  if (!is_readable($db_config))
-  {
-    fail_sync('Piwigo-Datenbankkonfiguration ist nicht lesbar.');
-  }
-
+  if (!is_readable($db_config)) fail_sync('Piwigo-Datenbankkonfiguration ist nicht lesbar.');
  $conf = array();
  $prefixeTable = 'piwigo_';
  require $db_config;
-  foreach (array('db_host','db_user','db_password','db_base') as $key)
-  {
-    if (!isset($conf[$key]))
-    {
-      fail_sync('Piwigo-Datenbankkonfiguration ist unvollstaendig: '.$key);
-    }
-  }
+  foreach (array('db_host','db_user','db_password','db_base') as $key) if (!isset($conf[$key])) fail_sync('Piwigo-Datenbankkonfiguration ist unvollstaendig: '.$key);

  $db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
-  if ($db->connect_errno)
-  {
-    fail_sync('Piwigo-Datenbank ist nicht erreichbar: '.$db->connect_error);
-  }
+  if ($db->connect_errno) fail_sync('Piwigo-Datenbank ist nicht erreichbar: '.$db->connect_error);
  $db->set_charset('utf8mb4');

  $key_result = $db->query("SELECT value FROM `{$prefixeTable}config` WHERE param='bratonien_nc_connector_secret' LIMIT 1");
-  if (!$key_result || !$key_result->num_rows)
-  {
-    fail_sync('Connector-Schluessel wurde nicht gefunden.');
-  }
+  if (!$key_result || !$key_result->num_rows) fail_sync('Connector-Schluessel wurde nicht gefunden.');
  $hex_key = (string)$key_result->fetch_assoc()['value'];

+  $connection_table = $prefixeTable.'bratonien_tools_nc_connections';
+  $connection_result = $db->query('SELECT config_json, secret_blob FROM `'.$connection_table.'` WHERE id='.$connection_id.' LIMIT 1');
+  if (!$connection_result || !$connection_result->num_rows) fail_sync('Connector-Verbindung #'.$connection_id.' wurde nicht gefunden.');
+  $connection_row = $connection_result->fetch_assoc();
+  $connection_config = json_decode((string)$connection_row['config_json'], true);
+  if (!is_array($connection_config)) $connection_config = array();
+  $connection_plain = decrypt_blob((string)$connection_row['secret_blob'], $hex_key);
+  $connection_credentials = json_decode($connection_plain, true);
+  if (!is_array($connection_credentials)) $connection_credentials = array();
+
  $api = array('key_id'=>'', 'key_secret'=>'');
-  $api_result = $db->query("SELECT value FROM `{$prefixeTable}config` WHERE param='bratonien_nc_piwigo_api' LIMIT 1");
-  if ($api_result && $api_result->num_rows)
+  $connection_scoped = (string)($connection_config['piwigo_auth'] ?? '') === 'connection-scoped' || array_key_exists('api_enabled', $connection_config);
+  if ($connection_scoped)
  {
-    $api_blob = (string)$api_result->fetch_assoc()['value'];
-    if ($api_blob !== '')
+    if (!empty($connection_config['api_enabled']))
    {
-      $api_plain = decrypt_blob($api_blob, $hex_key);
-      $api_decoded = json_decode($api_plain, true);
-      if (is_array($api_decoded))
+      $api['key_id'] = trim((string)($connection_credentials['api_key_id'] ?? ''));
+      $api['key_secret'] = trim((string)($connection_credentials['api_key_secret'] ?? ''));
+    }
+  }
+  else
+  {
+    // Nur fuer bereits aktive Altverbindungen: bisheriger globaler API-Zugang.
+    $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 !== '')
      {
-        $api['key_id'] = (string)($api_decoded['key_id'] ?? '');
-        $api['key_secret'] = (string)($api_decoded['key_secret'] ?? '');
+        $api_plain = decrypt_blob($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'] ?? '');
+        }
      }
    }
  }

-  $connection_table = $prefixeTable.'bratonien_tools_nc_connections';
-  $connection_result = $db->query('SELECT secret_blob FROM `'.$connection_table.'` WHERE id='.$connection_id.' LIMIT 1');
-  if (!$connection_result || !$connection_result->num_rows)
-  {
-    fail_sync('Connector-Verbindung #'.$connection_id.' wurde nicht gefunden.');
-  }
-  $connection_blob = (string)$connection_result->fetch_assoc()['secret_blob'];
-  $connection_plain = decrypt_blob($connection_blob, $hex_key);
-  $connection_credentials = json_decode($connection_plain, true);
-  if (!is_array($connection_credentials))
-  {
-    $connection_credentials = array();
-  }
  $fallback_user = (string)($connection_credentials['piwigo_user'] ?? '');
  $fallback_password = (string)($connection_credentials['piwigo_password'] ?? '');

@@ -284,16 +216,8 @@ try
        'Accept: application/json, text/xml;q=0.9',
        'Content-Type: application/x-www-form-urlencoded',
      );
-      decode_ws(http_request(
-        $base_url.'/ws.php?format=json',
-        array('method'=>'bratonien.nc.syncProductive', 'site_id'=>1),
-        $headers
-      ));
-      $orphan = decode_ws(http_request(
-        $base_url.'/ws.php?format=json',
-        array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>1, 'simulate'=>0),
-        $headers
-      ));
+      decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'bratonien.nc.syncProductive', 'site_id'=>1), $headers));
+      $orphan = decode_ws(http_request($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\n";
@@ -308,55 +232,27 @@ try
  }
  else
  {
-    $api_error = 'Keine gespeicherten API-Zugangsdaten.';
+    $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 === '' || $fallback_password === '')
-  {
-    fail_sync('Kein gespeicherter Benutzername/Passwort-Fallback vorhanden.');
-  }
+  if ($fallback_user === '' || $fallback_password === '') fail_sync('Kein gespeicherter Benutzername/Passwort-Fallback fuer diese Verbindung vorhanden.');

  $cookie_file = tempnam(sys_get_temp_dir(), 'br-nc-sync-');
-  if ($cookie_file === false)
-  {
-    fail_sync('Temporare Piwigo-Sitzung konnte nicht angelegt werden.');
-  }
+  if ($cookie_file === false) fail_sync('Temporare Piwigo-Sitzung konnte nicht angelegt werden.');

  try
  {
-    decode_ws(http_request(
-      $base_url.'/ws.php?format=json',
-      array('method'=>'pwg.session.login', 'username'=>$fallback_user, 'password'=>$fallback_password),
-      array(),
-      $cookie_file
-    ));
-
+    decode_ws(http_request($base_url.'/ws.php?format=json', array('method'=>'pwg.session.login', 'username'=>$fallback_user, 'password'=>$fallback_password), array(), $cookie_file));
    http_request(
      $base_url.'/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,
-      ),
+      array('sync'=>'files','display_info'=>1,'privacy_level'=>0,'sync_meta'=>1,'simulate'=>0,'subcats-included'=>1,'bratonien_connector'=>1,'submit'=>1),
      array(),
      $cookie_file
    );
-
-    $orphan = decode_ws(http_request(
-      $base_url.'/ws.php?format=json',
-      array('method'=>'bratonien.nc.syncOrphans', 'site_id'=>1, 'simulate'=>0),
-      array(),
-      $cookie_file
-    ));
+    $orphan = decode_ws(http_request($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\n";
    echo "Piwigo-Orphans synchronisiert: +$added / -$deleted\n";
  }
--- a/runtime/run-all.sh
+++ b/runtime/run-all.sh
@@ -13,7 +13,31 @@ fi

 result=0
 for config in "${configs[@]}"; do
-    echo "NC Connector: $(basename "$config")"
+    name="$(basename "$config")"
+    connection_id=""
+    if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
+        connection_id="${BASH_REMATCH[1]}"
+    fi
+
+    piwigo_root="$(sed -n 's/^PIWIGO_ROOT=//p' "$config" | tail -n 1)"
+    piwigo_root="${piwigo_root%\"}"
+    piwigo_root="${piwigo_root#\"}"
+    piwigo_root="${piwigo_root%\'}"
+    piwigo_root="${piwigo_root#\'}"
+    [[ -n "$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-$connection_id.storages.tsv"
+        rm -f -- "$tombstone_dir/deleted-$connection_id"
+        continue
+    fi
+
+    echo "NC Connector: $name"
    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
        result=1
    fi
--- a/template/nc_connector_admin.tpl
+++ b/template/nc_connector_admin.tpl
@@ -32,7 +32,28 @@
  <dialog id="bratonien-nc-wizard-dialog" style="width:min(980px,calc(100vw - 3rem));max-height:88vh;overflow:auto;background:#444;color:inherit;border:1px solid #777;border-radius:4px;padding:0;box-shadow:0 18px 60px rgba(0,0,0,.55)">
    <div style="padding:1.25rem 1.5rem">
      <div style="display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem">
-        <div><h4 style="margin:0">Neue Verbindung</h4><p class="bratonien-base-note" style="margin:.35rem 0 0"><strong>Schritt {$NC_CONNECTOR.wizard.step|escape:html} von 4</strong></p></div>
+        <div>
+          <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 == '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>

@@ -52,7 +73,7 @@
        </form>

      {elseif $NC_CONNECTOR.wizard.step == 2}
-        <p class="bratonien-base-note"><strong>Nextcloud wurde gefunden.</strong> Der Assistent verwendet den Zugang aus dem ersten Schritt auch für den benötigten Lesezugriff.</p>
+        <p class="bratonien-base-note"><strong>Nextcloud wurde gefunden.</strong> Für den Datenzugriff wird die bekannte Reader-Verbindung verwendet. Verzeichnisse werden ausschließlich mit dem angemeldeten Nextcloud-Benutzer gelesen.</p>
        <div class="bratonien-form-grid">
          <span class="bratonien-label">Adresse</span><strong>{$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>
@@ -62,7 +83,7 @@
        {if $NC_CONNECTOR.wizard.technical_stage == 'database_details'}
          <hr>
          <h5>Datenbank-Adresse prüfen</h5>
-          <p class="bratonien-base-note">Der Zugang aus dem ersten Schritt bleibt unverändert. Nur die Verbindungsadresse konnte nicht automatisch bestätigt werden.</p>
+          <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}">
@@ -76,46 +97,103 @@

        {elseif $NC_CONNECTOR.wizard.technical_stage == 'mounts'}
          <hr>
-          <h5>Speicherort bestätigen</h5>
-          <p class="bratonien-base-note">Die Datenquelle wurde gefunden. Nur Speicherorte, die nicht sicher erkannt werden konnten, müssen jetzt einmalig zugeordnet werden.</p>
-          <form method="post" data-bratonien-wizard-form>
-            <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+          {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">
-              {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}">
+              <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}
-                  <input name="nc_wizard_storage_mount[{$storage_index|escape:html}]" type="text" placeholder="Eingebundener Speicherpfad" required>
+                  <span class="bratonien-base-note">Keine Auswahl – Stammverzeichnis wird verwendet.</span>
                {/if}
-              {/foreach}
+              </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>
-            <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_mounts">Speicher prüfen</button></p>
-          </form>
+
+            <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">📁 {$directory_name|escape:html}</button>
+                  </form>
+                {/foreach}
+              {else}
+                <p class="bratonien-base-note">Keine Unterordner vorhanden.</p>
+              {/if}
+            </div>
+
+            <form method="post" data-bratonien-wizard-form>
+              <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
+              {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="{$storage.local_mount|escape:html}">
+              {/foreach}
+              <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_save_mounts">Verzeichnisse übernehmen</button></p>
+            </form>
+          {else}
+            <h5>Speicherort bestätigen</h5>
+            <p class="bratonien-base-note">Die Datenquelle wurde gefunden. Ein technischer Speicherort konnte nicht automatisch zugeordnet werden.</p>
+            <form method="post" data-bratonien-wizard-form>
+              <input type="hidden" name="pwg_token" value="{$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}

        {elseif $NC_CONNECTOR.wizard.technical_complete}
          <hr>
-          <h5>Welche Freigaben sollen verwendet werden?</h5>
-          <p class="bratonien-base-note"><strong>Empfehlung:</strong> ein eigener Showcase-Benutzer. So bleibt die Verbindung unabhängig von persönlichen Konten.</p>
+          <h5>Verbindung benennen</h5>
+          <p class="bratonien-base-note">Diese Verbindung verwendet ausschließlich den in Schritt 1 angemeldeten Nextcloud-Benutzer.</p>
          <form method="post" data-bratonien-wizard-form>
            <input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}">
            <div class="bratonien-form-grid">
              <label class="bratonien-label" for="nc_wizard_connection_name">Name der Verbindung</label><input id="nc_wizard_connection_name" name="nc_wizard_connection_name" type="text" value="{$NC_CONNECTOR.wizard.connection_name|escape:html}" required>
-              <label class="bratonien-label" for="nc_wizard_showcase_user">Nextcloud-Benutzer</label>
-              {if $NC_CONNECTOR.wizard.can_list_users && $NC_CONNECTOR.wizard.users|@count > 0}
-                <select id="nc_wizard_showcase_user" name="nc_wizard_showcase_user" required>
-                  {foreach from=$NC_CONNECTOR.wizard.users item=nc_user}<option value="{$nc_user|escape:html}"{if $nc_user == 'showcase'} selected{/if}>{$nc_user|escape:html}{if $nc_user == 'showcase'} · empfohlen{/if}</option>{/foreach}
-                </select>
-              {else}
-                <input id="nc_wizard_showcase_user" name="nc_wizard_showcase_user" type="text" value="{if $NC_CONNECTOR.wizard.showcase_user}{$NC_CONNECTOR.wizard.showcase_user|escape:html}{else}showcase{/if}" required>
-              {/if}
+              <span class="bratonien-label">Nextcloud-Benutzer</span><strong>{$NC_CONNECTOR.wizard.username|escape:html}</strong>
            </div>
            <p><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_select_user">Weiter</button></p>
          </form>
        {/if}

-        <form method="post" style="margin-top:1rem" data-bratonien-wizard-form><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_reset" data-bratonien-wizard-end>Neu beginnen</button></form>
+        <div class="bratonien-actions" style="margin-top:1rem">
+          <form method="post" data-bratonien-wizard-form><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_back">Zurück</button></form>
+          <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_reset" data-bratonien-wizard-end>Neu beginnen</button></form>
+        </div>

      {elseif $NC_CONNECTOR.wizard.step == 3}
        <p class="bratonien-base-note"><strong>Nextcloud ist vorbereitet.</strong> Jetzt wird der bevorzugte Piwigo-Zugang geprüft.</p>
@@ -128,13 +206,14 @@
          </div>
          <div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_api_test">API testen</button><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_api_skip" formnovalidate>Überspringen</button></div>
        </form>
+        <form method="post" style="margin-top:1rem" data-bratonien-wizard-form><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_back">Zurück</button></form>

      {elseif $NC_CONNECTOR.wizard.step == 4}
        <p class="bratonien-base-note"><strong>Fast fertig.</strong> Die Verbindung wurde noch nicht angelegt. Erst der letzte Button übernimmt die Einstellungen.</p>
        <div class="bratonien-form-grid">
          <span class="bratonien-label">Verbindung</span><strong>{$NC_CONNECTOR.wizard.connection_name|escape:html}</strong>
          <span class="bratonien-label">Nextcloud</span><strong>{$NC_CONNECTOR.wizard.base_url|escape:html}</strong>
-          <span class="bratonien-label">Freigaben von</span><strong>{$NC_CONNECTOR.wizard.showcase_user|escape:html}</strong>
+          <span class="bratonien-label">Nextcloud-Benutzer</span><strong>{$NC_CONNECTOR.wizard.username|escape:html}</strong>
          <span class="bratonien-label">Piwigo-API</span><strong>{if $NC_CONNECTOR.wizard.api_status == 'ok'}Erfolgreich geprüft{else}Übersprungen{/if}</strong>
        </div>
        <hr>
@@ -148,6 +227,7 @@
          </div>
          <div class="bratonien-actions"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_finish" data-bratonien-wizard-end>Verbindung anlegen</button><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_reset" formnovalidate data-bratonien-wizard-end>Abbrechen</button></div>
        </form>
+        <form method="post" style="margin-top:1rem" data-bratonien-wizard-form><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_wizard_back">Zurück</button></form>
      {/if}
    </div>
  </dialog>
@@ -184,14 +264,28 @@
    {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> · {if $connection.enabled}aktiv{else}{$connection.takeover_state|escape:html}{/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">
              {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}
-              {if !$connection.enabled && $connection.takeover_state != 'active'}<form method="post"><input type="hidden" name="pwg_token" value="{$PWG_TOKEN|escape:html}"><input type="hidden" name="connection_id" value="{$connection.id|escape:html}"><button class="buttonLike bratonien-delete-button" type="submit" name="bratonien_tool" value="nc_connector_delete" onclick="return confirm('Verbindung wirklich löschen? Bilder in Nextcloud oder Piwigo werden nicht gelöscht.');">Löschen</button></form>{/if}
+              <form method="post"><input type="hidden" name="pwg_token" value="{$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} · {$connection.last_sync.message|escape:html}</p>{/if}
+            {if isset($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>
+              {if $connection.last_sync.state == 'error'}<p class="bratonien-main-cache__warning"><strong>Laufzeitfehler:</strong> {$connection.last_sync.message|escape:html}</p>{/if}
+              {if $connection.last_sync.state == 'warning'}<p class="bratonien-main-cache__warning"><strong>Laufzeitwarnung:</strong> {$connection.last_sync.message|escape:html}</p>{/if}
+              {if $connection.last_sync.api_state == 'error'}<p class="bratonien-main-cache__warning"><strong>API:</strong> {$connection.last_sync.api_message|escape:html}</p>{/if}
+              {if $connection.last_sync.fallback_state == 'error'}<p class="bratonien-main-cache__warning"><strong>Fallback:</strong> {$connection.last_sync.fallback_message|escape:html}</p>{/if}
+              {if $connection.last_sync.error_detail}<details><summary>Technische Laufzeitdetails</summary><p class="bratonien-main-cache__warning">{$connection.last_sync.error_detail|escape:html}</p></details>{/if}
+            {else}
+              <p class="bratonien-base-note"><strong>Laufzeit:</strong> Noch kein Laufstatus für diese Verbindung vorhanden.</p>
+            {/if}
+            {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}
Author	SHA1	Message	Date
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