Restore single-path NC admin UI

Keep request-local watermark performance cache
Restore stable admin tab behavior
2026-09-19 18:44:30 +00:00 · 2026-08-19 23:59:56 +02:00 · 2026-08-19 23:58:13 +02:00 · 2026-08-19 23:57:24 +02:00 · 2026-08-19 23:55:04 +02:00 · 2026-08-19 23:54:35 +02:00
21 changed files with 522 additions and 1697 deletions
--- a/include/nc_connector_delete_safe.inc.php
+++ b/include/nc_connector_delete_safe.inc.php
@@ -4,42 +4,84 @@ if (!defined('PHPWG_ROOT_PATH'))
  die('Hacking attempt!');
 }

-function bratonien_tools_nc_connector_webdav_site_id(array $connection)
+function bratonien_tools_nc_connector_db_prefix_from_absolute($path)
 {
-  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
-  if ((string)($connection['adapter'] ?? '') !== 'remote') return 0;
-  if ((string)($config['source_mode'] ?? '') !== 'webdav-placeholder') return 0;
+  $path = rtrim(str_replace('\\', '/', (string)$path), '/');
+  $piwigo_root = rtrim(str_replace('\\', '/', PHPWG_ROOT_PATH), '/');
+  if ($path === '' || strpos($path, $piwigo_root.'/') !== 0) return '';

-  $gallery_root = rtrim((string)($config['parallel_gallery_root'] ?? ''), '/');
-  $piwigo_root = rtrim(PHPWG_ROOT_PATH, '/');
-  if ($gallery_root === '' || strpos($gallery_root, $piwigo_root.'/') !== 0) return 0;
+  $relative = ltrim(substr($path, strlen($piwigo_root)), '/');
+  return $relative === '' ? '' : './'.rtrim($relative, '/').'/';
+}

-  $relative = ltrim(substr($gallery_root, strlen($piwigo_root)), '/');
-  if ($relative === '') return 0;
-  $site_url = './'.rtrim($relative, '/').'/';
+function bratonien_tools_nc_connector_owned_db_prefixes(array $connection)
+{
+  $id = (int)($connection['id'] ?? 0);
+  if ($id < 1) return array();

-  $result = pwg_query(
-    "SELECT id FROM ".SITES_TABLE.
-    " WHERE galleries_url='".pwg_db_real_escape_string($site_url)."' LIMIT 1"
+  $prefixes = array(
+    './_data/bratonien-tools/nc-webdav-gallery/connection-'.$id.'/',
+    './_data/bratonien-tools/nc-webdav-source/connection-'.$id.'/',
+    './galleries/bratonien-webdav-'.$id.'/',
  );
-  if (!pwg_db_num_rows($result)) return 0;

-  $row = pwg_db_fetch_assoc($result);
-  return (int)$row['id'];
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $configured = bratonien_tools_nc_connector_db_prefix_from_absolute($config['parallel_gallery_root'] ?? '');
+  if ($configured !== '') $prefixes[] = $configured;
+
+  return array_values(array_unique($prefixes));
+}
+
+function bratonien_tools_nc_connector_owned_site_urls(array $connection)
+{
+  $id = (int)($connection['id'] ?? 0);
+  if ($id < 1) return array();
+
+  $urls = array(
+    './_data/bratonien-tools/nc-webdav-gallery/connection-'.$id.'/',
+    './galleries/bratonien-webdav-'.$id.'/',
+  );
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $configured = bratonien_tools_nc_connector_db_prefix_from_absolute($config['parallel_gallery_root'] ?? '');
+  if ($configured !== '') $urls[] = $configured;
+
+  return array_values(array_unique($urls));
 }

 function bratonien_tools_nc_connector_remove_webdav_piwigo_content(array $connection)
 {
-  $site_id = bratonien_tools_nc_connector_webdav_site_id($connection);
-  if ($site_id < 1) return array('site_id'=>0, 'images'=>0);
-
  include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');

+  $prefixes = bratonien_tools_nc_connector_owned_db_prefixes($connection);
+  if (!$prefixes) return array('sites'=>0, 'images'=>0);
+
+  $where = array();
+  foreach ($prefixes as $prefix)
+  {
+    $escaped = pwg_db_real_escape_string(addcslashes($prefix, '_%\\'));
+    $where[] = "path LIKE '".$escaped."%' ESCAPE '\\\\'";
+  }
+
  $image_rows = array();
-  $query = '\nSELECT DISTINCT i.id, i.path, i.representative_ext\n  FROM '.IMAGES_TABLE.' AS i\n  LEFT JOIN '.CATEGORIES_TABLE.' AS sc ON sc.id = i.storage_category_id\n  LEFT JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON ic.image_id = i.id\n  LEFT JOIN '.CATEGORIES_TABLE.' AS vc ON vc.id = ic.category_id\n  WHERE sc.site_id = '.$site_id.' OR vc.site_id = '.$site_id.'\n;';
-  $result = pwg_query($query);
+  $result = pwg_query(
+    'SELECT id, path, representative_ext FROM '.IMAGES_TABLE.
+    ' WHERE '.implode(' OR ', $where)
+  );
  while ($row = pwg_db_fetch_assoc($result))
  {
+    $path = (string)$row['path'];
+    $owned = false;
+    foreach ($prefixes as $prefix)
+    {
+      if (strpos($path, $prefix) === 0)
+      {
+        $owned = true;
+        break;
+      }
+    }
+    if (!$owned) continue;
+
    $row['id'] = (int)$row['id'];
    $image_rows[$row['id']] = $row;
  }
@@ -56,24 +98,28 @@ function bratonien_tools_nc_connector_remove_webdav_piwigo_content(array $connec
    }
  }

-  delete_site($site_id);
-
  if ($image_rows)
  {
-    $ids = array_keys($image_rows);
-    $remaining = query2array(
-      'SELECT id FROM '.IMAGES_TABLE.' WHERE id IN ('.implode(',', array_map('intval', $ids)).')',
-      null,
-      'id'
+    delete_elements(array_map('intval', array_keys($image_rows)), false);
+  }
+
+  $site_count = 0;
+  foreach (bratonien_tools_nc_connector_owned_site_urls($connection) as $site_url)
+  {
+    $result = pwg_query(
+      "SELECT id FROM ".SITES_TABLE.
+      " WHERE galleries_url='".pwg_db_real_escape_string($site_url)."'"
    );
-    if ($remaining)
+    while ($row = pwg_db_fetch_assoc($result))
    {
-      delete_elements(array_map('intval', $remaining), false);
+      delete_site((int)$row['id']);
+      $site_count++;
    }
  }

+  update_category('all');
  invalidate_user_cache(true);
-  return array('site_id'=>$site_id, 'images'=>count($image_rows));
+  return array('sites'=>$site_count, 'images'=>count($image_rows));
 }

 /**
@@ -89,7 +135,7 @@ function bratonien_tools_nc_connector_delete_safe()
    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
  }

-  $cleanup = array('site_id'=>0, 'images'=>0);
+  $cleanup = array('sites'=>0, 'images'=>0);
  if (
    (string)($connection['adapter'] ?? '') === 'remote'
    && (string)($connection['config']['source_mode'] ?? '') === 'webdav-placeholder'
@@ -110,14 +156,7 @@ function bratonien_tools_nc_connector_delete_safe()
    @file_put_contents($status_dir.'/deleted-'.$id, date('c')."\n", LOCK_EX);
  }

-  if ((int)$cleanup['site_id'] > 0)
-  {
-    return array(
-      'message'=>'Verbindung wurde gelöscht. Die zugehörigen Piwigo-Alben und '.(int)$cleanup['images'].' Bilder wurden aus Piwigo entfernt. Nextcloud-Dateien blieben unverändert.',
-    );
-  }
-
  return array(
-    'message'=>'Verbindung wurde gelöscht. Verbliebene Laufzeitdaten werden automatisch bereinigt. Quelldateien blieben unverändert.',
+    'message'=>'Verbindung wurde gelöscht. '.(int)$cleanup['images'].' eindeutig zu dieser Verbindung gehörende Bilder wurden aus Piwigo entfernt. Nextcloud-Dateien blieben unverändert.',
  );
 }
--- a/include/nc_legacy_reset.inc.php
+++ b/include/nc_legacy_reset.inc.php
@@ -1,115 +0,0 @@
-<?php
-if (!defined('PHPWG_ROOT_PATH'))
-{
-  die('Hacking attempt!');
-}
-
-function bratonien_tools_nc_legacy_remove_tree($path, $allowed_root)
-{
-  $path = rtrim(str_replace('\\', '/', (string)$path), '/');
-  $allowed_root = rtrim(str_replace('\\', '/', (string)$allowed_root), '/');
-  if ($path === '' || $allowed_root === '' || $path === $allowed_root || strpos($path, $allowed_root.'/') !== 0)
-  {
-    return 0;
-  }
-  if (!file_exists($path) && !is_link($path)) return 0;
-
-  if (is_link($path) || is_file($path))
-  {
-    return @unlink($path) ? 1 : 0;
-  }
-
-  $removed = 0;
-  $items = @scandir($path);
-  if (is_array($items))
-  {
-    foreach ($items as $item)
-    {
-      if ($item === '.' || $item === '..') continue;
-      $removed += bratonien_tools_nc_legacy_remove_tree($path.'/'.$item, $allowed_root);
-    }
-  }
-  if (@rmdir($path)) $removed++;
-  return $removed;
-}
-
-function bratonien_tools_nc_legacy_remove_state_files($state_root)
-{
-  $removed = 0;
-  foreach (glob(rtrim($state_root, '/').'/connection-*') ?: array() as $connection_dir)
-  {
-    if (!is_dir($connection_dir)) continue;
-    foreach (array('webdav-map.json', 'webdav-manifest.tsv', 'webdav-shadow-map.json') as $name)
-    {
-      $path = $connection_dir.'/'.$name;
-      if (is_file($path) && @unlink($path)) $removed++;
-    }
-  }
-  return $removed;
-}
-
-function bratonien_tools_nc_reset_legacy_imports()
-{
-  include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
-
-  $ids = array();
-  $result = pwg_query(
-    "SELECT id FROM ".IMAGES_TABLE.
-    " WHERE path LIKE '%nc-webdav-source/connection-%'"
-  );
-  while ($row = pwg_db_fetch_assoc($result))
-  {
-    $ids[] = (int)$row['id'];
-  }
-
-  if ($ids)
-  {
-    delete_elements($ids, false);
-  }
-
-  $data_root = rtrim(PHPWG_ROOT_PATH, '/').'/_data';
-  $tool_root = $data_root.'/bratonien-tools';
-  $removed_files = 0;
-  foreach (array(
-    $tool_root.'/nc-webdav-source',
-    $tool_root.'/nc-webdav-preview',
-    $tool_root.'/nc-webdav-gallery',
-  ) as $generated_root)
-  {
-    $removed_files += bratonien_tools_nc_legacy_remove_tree($generated_root, $data_root);
-  }
-
-  if (defined('PWG_DERIVATIVE_DIR'))
-  {
-    $derivative_root = rtrim(PHPWG_ROOT_PATH.PWG_DERIVATIVE_DIR, '/');
-    foreach (array(
-      $derivative_root.'/_data/bratonien-tools/nc-webdav-source',
-      $derivative_root.'/_data/bratonien-tools/nc-webdav-gallery',
-    ) as $generated_derivative_root)
-    {
-      $removed_files += bratonien_tools_nc_legacy_remove_tree($generated_derivative_root, $derivative_root);
-    }
-  }
-
-  $removed_state_files = bratonien_tools_nc_legacy_remove_state_files($tool_root.'/nc-connector-state');
-
-  if ($ids)
-  {
-    update_category('all');
-    invalidate_user_cache(true);
-  }
-
-  $result = array(
-    'timestamp'=>time(),
-    'removed_image_records'=>count($ids),
-    'removed_generated_entries'=>$removed_files,
-    'removed_state_files'=>$removed_state_files,
-  );
-
-  if (function_exists('conf_update_param'))
-  {
-    conf_update_param('bratonien_nc_legacy_reset_0977', json_encode($result));
-  }
-
-  return $result;
-}
--- a/include/watermark_engine.inc.php
+++ b/include/watermark_engine.inc.php
@@ -23,7 +23,6 @@ function bratonien_tools_watermark_engine_enabled()
  // Piwigo recalculates use_watermark for custom derivatives from the native
  // watermark file itself. Therefore an active Bratonien engine must keep the
  // native watermark file empty, not only the stored use_watermark flags false.
-  // This initialization is required only once per PHP request.
  if ($enabled)
  {
    bratonien_tools_disable_piwigo_watermarks();
--- a/include/webdav_gallery_runtime.inc.php
+++ b/include/webdav_gallery_runtime.inc.php
@@ -1,98 +0,0 @@
-<?php
-if (!defined('PHPWG_ROOT_PATH'))
-{
-  die('Hacking attempt!');
-}
-
-function bratonien_tools_webdav_derivative_matches_preview($derivative_path, $params, $image_id)
-{
-  $derivative_path = (string)$derivative_path;
-  $image_id = (int)$image_id;
-  if ($derivative_path === '' || $image_id < 1 || !is_file($derivative_path) || !is_readable($derivative_path)) return false;
-
-  $info = bratonien_tools_webdav_image_source_info($image_id);
-  if (!$info) return false;
-
-  $preview = bratonien_tools_webdav_preview_path($info);
-  if (!$preview || !is_file($preview) || !is_readable($preview)) return false;
-
-  $preview_size = @getimagesize($preview);
-  $derivative_size = @getimagesize($derivative_path);
-  if (!is_array($preview_size) || empty($preview_size[0]) || empty($preview_size[1])) return false;
-  if (!is_array($derivative_size) || empty($derivative_size[0]) || empty($derivative_size[1])) return false;
-
-  try
-  {
-    $expected_size = $params->compute_final_size(array((int)$preview_size[0], (int)$preview_size[1]));
-  }
-  catch (Throwable $e)
-  {
-    return false;
-  }
-
-  if (!is_array($expected_size) || !isset($expected_size[0], $expected_size[1])) return false;
-  if ((int)$derivative_size[0] !== (int)$expected_size[0] || (int)$derivative_size[1] !== (int)$expected_size[1]) return false;
-
-  $preview_mtime = @filemtime($preview) ?: 0;
-  $derivative_mtime = @filemtime($derivative_path) ?: 0;
-  if ($preview_mtime > 0 && $derivative_mtime < $preview_mtime) return false;
-
-  return true;
-}
-
-function bratonien_tools_webdav_ondemand_derivative_url($image_id, $params)
-{
-  $image_id = (int)$image_id;
-  if ($image_id < 1 || !is_object($params)) return null;
-
-  $type = trim((string)($params->type ?? ''));
-  if ($type === '') return null;
-
-  return get_root_url().'plugins/'.BRATONIEN_TOOLS_ID.'/webdav-derivative.php?id='.$image_id.'&type='.rawurlencode($type);
-}
-
-function bratonien_tools_filter_webdav_gallery_derivative_url($url, $params, $src_image, $rel_url)
-{
-  if (!is_object($src_image) || empty($src_image->id) || empty($src_image->rel_path)) return $url;
-
-  $source_path = str_replace('\\', '/', (string)$src_image->rel_path);
-  if (!preg_match('#/nc-webdav-source/connection-[0-9]+/root-[0-9]+/.+$#', $source_path))
-  {
-    return $url;
-  }
-
-  $image_id = (int)$src_image->id;
-  try
-  {
-    $derivative = new DerivativeImage($params, $src_image);
-    if (!$derivative->same_as_source())
-    {
-      $derivative_path = $derivative->get_path();
-      if (bratonien_tools_webdav_derivative_matches_preview($derivative_path, $params, $image_id))
-      {
-        return $url;
-      }
-    }
-  }
-  catch (Throwable $e)
-  {
-    error_log('Bratonien WebDAV derivative lookup #'.$image_id.': '.$e->getMessage());
-  }
-
-  // Auf der Picture-/Fotorama-Seite wird nicht mehr waehrend des HTML-Aufbaus
-  // synchron erzeugt. Fotorama arbeitet lazy: Erst wenn das konkrete Bild in
-  // den Fokus kommt und seine URL abruft, erzeugt dieser Endpoint genau dieses
-  // angeforderte Standard-Derivat aus dem bereits gecachten NC-Preview.
-  $script_name = basename((string)($_SERVER['SCRIPT_NAME'] ?? ''));
-  if ($script_name === 'picture.php')
-  {
-    $ondemand_url = bratonien_tools_webdav_ondemand_derivative_url($image_id, $params);
-    if ($ondemand_url) return $ondemand_url;
-  }
-
-  // Galerie-Fallback: niemals Connector-Platzhalter ausliefern. Solange kein
-  // lokales korrektes Derivat vorliegt, wird das echte vorbereitete NC-Preview
-  // verwendet. Der eigentliche Galerie-Derivattyp wird beim Sync vorgebaut.
-  $preview_url = bratonien_tools_webdav_image_url($image_id, true);
-  return $preview_url ?: $url;
-}
--- a/js/admin_tabs.js
+++ b/js/admin_tabs.js
@@ -1,94 +1,6 @@
 (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;
@@ -201,14 +113,9 @@
    activate(initial, false);
  }

-  function init() {
-    initBratonienTabs();
-    initNcRouteStatus();
-  }
-
  if (document.readyState === 'loading') {
-    document.addEventListener('DOMContentLoaded', init);
+    document.addEventListener('DOMContentLoaded', initBratonienTabs);
  } else {
-    init();
+    initBratonienTabs();
  }
 })();
--- a/js/nc_connector_edit_v2.js
+++ b/js/nc_connector_edit_v2.js
@@ -1,236 +1,6 @@
 (function () {
  'use strict';
-
-  function ready(callback) {
-    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', callback);
-    else callback();
-  }
-
-  ready(function () {
-    var section = document.getElementById('nc-connector');
-    if (!section) return;
-
-    var tokenInput = section.querySelector('input[name="pwg_token"]');
-    var pwgToken = tokenInput ? tokenInput.value : '';
-
-    var technicalButton = document.getElementById('bratonien-nc-technical-open');
-    if (technicalButton) technicalButton.remove();
-    var technicalCreate = document.getElementById('bratonien-nc-technical-create');
-    if (technicalCreate) technicalCreate.remove();
-
-    var statusHeading = Array.prototype.find.call(section.querySelectorAll('h4'), function (heading) {
-      return heading.textContent.trim() === 'Status';
-    });
-    var statusCard = statusHeading ? statusHeading.closest('.bratonien-card') : null;
-    if (statusCard && pwgToken && !statusCard.querySelector('[data-nc-run-now]')) {
-      var runForm = document.createElement('form');
-      runForm.method = 'post';
-      runForm.className = 'bratonien-actions';
-      runForm.style.marginTop = '1rem';
-      runForm.setAttribute('data-nc-run-now', '1');
-      runForm.innerHTML = '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
-        + '<button class="buttonLike" type="submit" name="bratonien_tool" value="nc_connector_run_now">Jetzt abgleichen</button>';
-      runForm.addEventListener('submit', function () {
-        var button = runForm.querySelector('button');
-        if (button) {
-          button.disabled = true;
-          button.textContent = 'Abgleich wird gestartet …';
-        }
-      });
-      statusCard.appendChild(runForm);
-    }
-
-    function escapeHtml(value) {
-      return String(value == null ? '' : value).replace(/[&<>"']/g, function (c) {
-        return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#039;'}[c];
-      });
-    }
-
-    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 createPostForm(label, tool, id) {
-      var form = document.createElement('form');
-      form.method = 'post';
-      form.style.display = 'inline';
-      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>';
-      return form;
-    }
-
-    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">Die Einstellungen gelten nur für diese Verbindung.</p></div>'
-        + '<button type="button" class="buttonLike" data-edit-close>Schließen</button></div>'
-        + '<div data-edit-content style="margin-top:1rem"></div></div>';
-      document.body.appendChild(node);
-      node.querySelector('[data-edit-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 showError(form, data) {
-      var old = form.querySelector('[data-edit-error]');
-      if (old) old.remove();
-      var box = document.createElement('div');
-      box.dataset.editError = '1';
-      box.className = 'bratonien-main-cache__warning';
-      box.style.margin = '0 0 1rem';
-      box.textContent = (data && data.message) ? data.message : 'Die Verbindung konnte nicht gespeichert werden.';
-      form.insertBefore(box, form.firstChild);
-    }
-
-    function submitLocal(form, editDialog) {
-      if (!form.reportValidity()) return;
-      var button = form.querySelector('button[type="submit"]');
-      if (button) button.disabled = true;
-      fetch('plugins/bratonien_tools/nc-connector-edit-save.php', {
-        method:'POST', credentials:'same-origin', cache:'no-store', headers:{'Accept':'application/json'}, body:new FormData(form)
-      }).then(function (response) {
-        return response.json().then(function (data) {
-          if (!response.ok || !data.ok) { showError(form, data); return; }
-          editDialog.close();
-          window.location.reload();
-        });
-      }).catch(function (error) {
-        showError(form, {message:error.message || String(error)});
-      }).finally(function () {
-        if (button) button.disabled = false;
-      });
-    }
-
-    function openLocalEditor(id) {
-      var editDialog = dialog();
-      var content = editDialog.querySelector('[data-edit-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 Verbindung wird über den WebDAV-Assistenten bearbeitet.');
-        var legacy = data.legacy || {};
-        var webdav = data.webdav || {};
-        var storages = Array.isArray(legacy.storages) ? legacy.storages : [];
-        var rows = storages.map(storageRow).join('') || storageRow({});
-
-        content.innerHTML = '<form method="post" data-edit-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</h5><div class="bratonien-form-grid">'
-          + '<label class="bratonien-label">Nextcloud-Adresse</label><input name="nc_nextcloud_url" value="'+escapeHtml(webdav.nextcloud_url || '')+'">'
-          + '<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-Zugang</h5><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')+'">'
-          + '<label class="bratonien-label">Fallback-Benutzer</label><input name="nc_fallback_user" value="'+escapeHtml(webdav.fallback_user || '')+'" autocomplete="username">'
-          + '<label class="bratonien-label">Fallback-Passwort</label><input name="nc_fallback_password" type="password" autocomplete="current-password" placeholder="'+(webdav.has_fallback_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
-          + '</div>'
-          + '<h5 style="margin-top:1.2rem">Lokaler Connector</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 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-cancel>Abbrechen</button></div>'
-          + '</form>';
-
-        var form = content.querySelector('[data-edit-form]');
-        form.querySelector('[data-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) {
-            var row = remove.closest('[data-storage-row]');
-            if (row) row.remove();
-          }
-        });
-        form.addEventListener('submit', function (event) {
-          event.preventDefault();
-          submitLocal(form, editDialog);
-        });
-      }).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_migrate_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 || !deleteForm.parentElement) return;
-      var idInput = deleteForm.querySelector('input[name="connection_id"]');
-      if (!idInput) return;
-      var id = idInput.value;
-      var actions = deleteForm.parentElement;
-
-      loadConnection(id).then(function (data) {
-        var edit;
-        if (data.adapter === 'local') {
-          edit = document.createElement('button');
-          edit.type = 'button';
-          edit.className = 'buttonLike';
-          edit.textContent = 'Bearbeiten';
-          edit.addEventListener('click', function () { openLocalEditor(id); });
-        } else {
-          edit = createPostForm('Bearbeiten', 'nc_connector_edit_start', id);
-        }
-        actions.insertBefore(edit, deleteForm);
-      }).catch(function (error) {
-        var info = document.createElement('span');
-        info.className = 'bratonien-main-cache__warning';
-        info.textContent = 'Verbindung konnte nicht geladen werden: '+(error.message || String(error));
-        actions.insertBefore(info, deleteForm);
-      });
-    });
-  });
+  // 0.9.7.18: Die parallele AJAX-Editor-Schicht ist absichtlich deaktiviert.
+  // Der NC Connector benutzt wieder ausschliesslich die vorhandenen
+  // Piwigo-Formulare, die Tool-Registry und den WebDAV-Wizard.
 })();
--- a/main.inc.php
+++ b/main.inc.php
@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.7.11
+Version: 0.9.7.18
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
@@ -17,7 +17,6 @@ define('BRATONIEN_TOOLS_PATH', PHPWG_PLUGINS_PATH . BRATONIEN_TOOLS_ID . '/');

 require_once(BRATONIEN_TOOLS_PATH . 'include/watermark_runtime.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/webdav_image_runtime.inc.php');
-require_once(BRATONIEN_TOOLS_PATH . 'include/webdav_gallery_runtime.inc.php');
 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');
@@ -30,7 +29,6 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
 add_event_handler('get_admin_plugin_menu_links', 'bratonien_tools_admin_menu');
 add_event_handler('get_derivative_url', 'bratonien_tools_filter_derivative_url', EVENT_HANDLER_PRIORITY_NEUTRAL, 4);
 add_event_handler('get_src_image_url', 'bratonien_tools_filter_webdav_src_url', EVENT_HANDLER_PRIORITY_NEUTRAL + 50, 2);
-add_event_handler('get_derivative_url', 'bratonien_tools_filter_webdav_gallery_derivative_url', EVENT_HANDLER_PRIORITY_NEUTRAL + 50, 4);
 add_event_handler('loc_end_element_set_global', 'bratonien_tools_batch_titles_register_action');
 add_event_handler('element_set_global_action', 'bratonien_tools_batch_titles_apply', EVENT_HANDLER_PRIORITY_NEUTRAL, 2);
 add_event_handler('init', 'bratonien_tools_prepare_connector_private_import', EVENT_HANDLER_PRIORITY_NEUTRAL - 30);
--- a/maintain.class.php
+++ b/maintain.class.php
@@ -9,7 +9,6 @@ require_once(dirname(__FILE__) . '/include/database.class.php');
 require_once(dirname(__FILE__) . '/tools/watermark_profiles.inc.php');
 require_once(dirname(__FILE__) . '/include/dependencies.inc.php');
 require_once(dirname(__FILE__) . '/include/nc_connector_scheduler.inc.php');
-require_once(dirname(__FILE__) . '/include/nc_legacy_reset.inc.php');

 class bratonien_tools_maintain extends PluginMaintain
 {
@@ -52,18 +51,6 @@ class bratonien_tools_maintain extends PluginMaintain
  public function update($old_version, $new_version, &$errors = array())
  {
    $this->prepare($errors);
-
-    if (version_compare((string)$old_version, '0.9.7.7', '<') && version_compare((string)$new_version, '0.9.7.7', '>='))
-    {
-      try
-      {
-        bratonien_tools_nc_reset_legacy_imports();
-      }
-      catch (Throwable $e)
-      {
-        $errors[] = 'Connector-Altbestand konnte nicht vollständig bereinigt werden: '.$e->getMessage();
-      }
-    }
  }

  public function uninstall()
--- a/nc-connector-edit-data.php
+++ b/nc-connector-edit-data.php
@@ -1,93 +0,0 @@
-<?php
-$piwigo_root = realpath(dirname(__DIR__, 2));
-if ($piwigo_root === false)
-{
-  http_response_code(500);
-  exit;
-}
-define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
-include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-
-header('Content-Type: application/json; charset=utf-8');
-header('Cache-Control: no-store, max-age=0');
-
-if (!defined('BRATONIEN_TOOLS_PATH'))
-{
-  http_response_code(404);
-  echo json_encode(array('error'=>'Bratonien Tools ist nicht aktiv.'));
-  exit;
-}
-if (!function_exists('is_admin') || !is_admin())
-{
-  http_response_code(403);
-  echo json_encode(array('error'=>'Administratorrechte erforderlich.'));
-  exit;
-}
-
-require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector.inc.php');
-require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_manage.inc.php');
-require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_connection_scope.inc.php');
-
-$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();
-try
-{
-  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
-}
-catch (Throwable $e)
-{
-  $credentials = array();
-}
-
-$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'] ?? '')) !== '',
-    'fallback_user'=>(string)($credentials['piwigo_user'] ?? ''),
-    'has_fallback_password'=>(string)($credentials['piwigo_password'] ?? '') !== '',
-  ),
-);
-
-echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
--- a/nc-connector-edit-save.php
+++ b/nc-connector-edit-save.php
@@ -1,356 +0,0 @@
-<?php
-$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');
-
-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'
-      );
-    }
-  }
-
-  $fallback_user = trim((string)($_POST['nc_fallback_user'] ?? ($credentials['piwigo_user'] ?? '')));
-  $submitted_fallback_password = (string)($_POST['nc_fallback_password'] ?? '');
-  $fallback_password = $submitted_fallback_password !== '' ? $submitted_fallback_password : (string)($credentials['piwigo_password'] ?? '');
-  if (($fallback_user === '') !== ($fallback_password === ''))
-  {
-    bratonien_tools_nc_edit_fail(
-      'Fallback-Benutzer und Fallback-Passwort müssen gemeinsam vollständig sein.',
-      array('nc_fallback_user','nc_fallback_password'),
-      'Piwigo-Fallback'
-    );
-  }
-  if ($fallback_user !== '')
-  {
-    try
-    {
-      bratonien_tools_nc_connector_validate_fallback_credentials($fallback_user, $fallback_password);
-    }
-    catch (Throwable $e)
-    {
-      bratonien_tools_nc_edit_fail(
-        'Der Piwigo-Fallback wurde abgelehnt: '.$e->getMessage(),
-        array('nc_fallback_user','nc_fallback_password'),
-        'Piwigo-Fallback'
-      );
-    }
-  }
-
-  $result = bratonien_tools_nc_connector_update_local_friendly();
-
-  if (array_key_exists('nc_fallback_user', $_POST) || array_key_exists('nc_fallback_password', $_POST))
-  {
-    $updated = bratonien_tools_nc_connector_connection($id, true);
-    if (!$updated) throw new RuntimeException('Die Verbindung konnte nach dem Speichern nicht erneut geladen werden.');
-    $updated_credentials = bratonien_tools_nc_connector_scoped_secret($updated);
-    $updated_credentials['piwigo_user'] = $fallback_user;
-    $updated_credentials['piwigo_password'] = $fallback_password;
-    bratonien_tools_nc_connector_store_scoped_secret($id, $updated, $updated_credentials);
-  }
-
-  bratonien_tools_nc_edit_json(200, array(
-    'ok'=>true,
-    'message'=>(string)($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');
-    $add('nc_connection_api_key_secret');
-  }
-  if (stripos($message, 'Fallback') !== false)
-  {
-    $stage = 'Piwigo-Fallback';
-    $add('nc_fallback_user');
-    $add('nc_fallback_password');
-  }
-
-  bratonien_tools_nc_edit_fail(
-    $message,
-    $fields,
-    $stage,
-    'Interne Prüfung: '.get_class($e)
-  );
-}
--- a/nc-connector-source-picker-start.php
+++ b/nc-connector-source-picker-start.php
@@ -1,104 +0,0 @@
-<?php
-$piwigo_root = realpath(dirname(__DIR__, 2));
-if ($piwigo_root === false)
-{
-  http_response_code(500);
-  exit;
-}
-define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
-include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-
-header('Content-Type: application/json; charset=utf-8');
-header('Cache-Control: no-store, max-age=0');
-
-function bratonien_tools_nc_source_picker_json($status, array $payload)
-{
-  http_response_code((int)$status);
-  echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  exit;
-}
-
-function bratonien_tools_nc_source_picker_fail($message, array $fields = array())
-{
-  bratonien_tools_nc_source_picker_json(422, array(
-    'ok'=>false,
-    'message'=>(string)$message,
-    'fields'=>array_values(array_unique($fields)),
-  ));
-}
-
-if (!defined('BRATONIEN_TOOLS_PATH'))
-{
-  bratonien_tools_nc_source_picker_json(404, array('ok'=>false, 'message'=>'Bratonien Tools ist nicht aktiv.', 'fields'=>array()));
-}
-if (!function_exists('is_admin') || !is_admin())
-{
-  bratonien_tools_nc_source_picker_json(403, array('ok'=>false, 'message'=>'Administratorrechte erforderlich.', 'fields'=>array()));
-}
-if (($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST')
-{
-  bratonien_tools_nc_source_picker_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 (!$connection)
-  {
-    bratonien_tools_nc_source_picker_fail('Die zu bearbeitende Verbindung wurde nicht gefunden.');
-  }
-  if ((string)$connection['adapter'] !== 'local')
-  {
-    bratonien_tools_nc_source_picker_fail('Die automatische Migrationsauswahl ist nur für die bestehende Legacy-Verbindung vorgesehen.');
-  }
-
-  $config = isset($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'] ?? ''));
-  $password = (string)($credentials['nextcloud_password'] ?? '');
-
-  $missing = array();
-  if ($base_url === '') $missing[] = 'nc_nextcloud_url';
-  if ($username === '') $missing[] = 'nc_nextcloud_user';
-  if ($password === '') $missing[] = 'nc_nextcloud_password';
-  if ($missing)
-  {
-    bratonien_tools_nc_source_picker_fail(
-      'Für die automatische Ordnerauswahl müssen Nextcloud-Adresse, Benutzer und Passwort gespeichert sein.',
-      $missing
-    );
-  }
-
-  bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection($connection, 'migrate');
-
-  $state = bratonien_tools_nc_wizard_state();
-  if ((int)($state['step'] ?? 0) !== 2 || empty($state['scan_ok']) || empty($state['directory_selection_ready']))
-  {
-    $detail = trim((string)($state['technical_error'] ?? ''));
-    bratonien_tools_nc_source_picker_fail(
-      $detail !== '' ? 'Die Nextcloud-Ordner konnten nicht geladen werden: '.$detail : 'Die Nextcloud-Ordner konnten nicht geladen werden.',
-      array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password')
-    );
-  }
-
-  bratonien_tools_nc_source_picker_json(200, array(
-    'ok'=>true,
-    'message'=>'Nextcloud-Ordner wurden geladen. Die Auswahl wird geöffnet.',
-    'fields'=>array(),
-  ));
-}
-catch (Throwable $e)
-{
-  $message = trim($e->getMessage());
-  if ($message === '') $message = 'Die Nextcloud-Ordnerauswahl konnte nicht vorbereitet werden.';
-  bratonien_tools_nc_source_picker_fail(
-    $message,
-    array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password')
-  );
-}
--- a/runtime/build-webdav-media.sh
+++ b/runtime/build-webdav-media.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
+umask 0002

 CONFIG_FILE="${PIWIGO_CONFIG:-}"
 [[ -n "$CONFIG_FILE" && -r "$CONFIG_FILE" ]] || { echo "WebDAV-Konfiguration fehlt: ${CONFIG_FILE:-<leer>}" >&2; exit 1; }
@@ -22,6 +23,47 @@ exec 9>"$LOCK_FILE"
 flock -n 9 || exit 0

 PREVIEW_CACHE="$PIWIGO_ROOT/_data/bratonien-tools/nc-webdav-preview/connection-$CONNECTION_ID"
+SOURCE_CACHE="$PIWIGO_ROOT/_data/bratonien-tools/nc-webdav-gallery/connection-$CONNECTION_ID"
+DERIVATIVE_CACHE="$PIWIGO_ROOT/_data/i/_data/bratonien-tools/nc-webdav-gallery/connection-$CONNECTION_ID"
+PIWIGO_DATA="$PIWIGO_ROOT/_data"
+
+normalize_connector_cache_permissions() {
+    [[ -d "$PIWIGO_DATA" ]] || return 0
+
+    local data_uid data_gid current_uid path
+    data_uid="$(stat -c '%u' "$PIWIGO_DATA")"
+    data_gid="$(stat -c '%g' "$PIWIGO_DATA")"
+    current_uid="$(id -u)"
+
+    for path in "$SOURCE_CACHE" "$PREVIEW_CACHE" "$DERIVATIVE_CACHE"; do
+        [[ -e "$path" ]] || continue
+
+        if [[ "$current_uid" -eq 0 ]]; then
+            chown -R "$data_uid:$data_gid" -- "$path"
+        fi
+
+        if ! find "$path" -type d -exec chmod 2775 {} + 2>/dev/null; then
+            echo "Hinweis: Verzeichnisrechte konnten ohne Root-Rechte nicht vollständig repariert werden: $path" >&2
+        fi
+        if ! find "$path" -type f -exec chmod 0664 {} + 2>/dev/null; then
+            echo "Hinweis: Dateirechte konnten ohne Root-Rechte nicht vollständig repariert werden: $path" >&2
+        fi
+    done
+}
+
+# Altbestände aus früheren root/systemd-Läufen werden repariert, sobald dieser
+# Lauf mit ausreichenden Rechten ausgeführt wird. Bei normalen Webserver-Läufen
+# werden zumindest alle eigenen Dateien gruppenschreibbar gehalten.
+normalize_connector_cache_permissions
+
+# Dieser Medienlauf wird erst nach einem erfolgreichen WebDAV-Aufbau und einer
+# erfolgreichen Piwigo-Synchronisierung gestartet. Deshalb darf erst hier aus
+# "lokale Connector-Datei fehlt" auf eine in Nextcloud entfernte Freigabe/Datei
+# geschlossen werden. Bei einer nicht erreichbaren Verbindung wird dieser Block
+# niemals ausgeführt und der vorhandene Piwigo-Bestand bleibt unverändert.
+php "$SCRIPT_DIR/cleanup-missing-webdav-images.php" \
+    --piwigo-root="$PIWIGO_ROOT" \
+    --connection-id="$CONNECTION_ID"

 php "$SCRIPT_DIR/lib/precache-webdav-previews.php" \
    --mapping="$WEBDAV_MAPPING_FILE" \
@@ -33,3 +75,5 @@ php "$SCRIPT_DIR/lib/precache-webdav-previews.php" \
 php "$SCRIPT_DIR/lib/build-webdav-derivatives.php" \
    --piwigo-root="$PIWIGO_ROOT" \
    --connection-id="$CONNECTION_ID"
+
+normalize_connector_cache_permissions
--- a/runtime/cleanup-missing-webdav-images.php
+++ b/runtime/cleanup-missing-webdav-images.php
@@ -0,0 +1,142 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "CLI only\n");
+  exit(1);
+}
+
+$options = getopt('', array('piwigo-root:', 'connection-id:'));
+$piwigo_root = rtrim((string)($options['piwigo-root'] ?? ''), '/');
+$connection_id = (int)($options['connection-id'] ?? 0);
+if ($piwigo_root === '' || $connection_id < 1)
+{
+  fwrite(STDERR, "Parameter --piwigo-root und --connection-id werden benoetigt.\n");
+  exit(1);
+}
+
+$db_config = $piwigo_root.'/local/config/database.inc.php';
+if (!is_readable($db_config))
+{
+  fwrite(STDERR, "Piwigo-Datenbankkonfiguration ist nicht lesbar.\n");
+  exit(1);
+}
+
+$conf = array();
+$prefixeTable = 'piwigo_';
+require $db_config;
+foreach (array('db_host','db_user','db_password','db_base') as $key)
+{
+  if (!isset($conf[$key]))
+  {
+    fwrite(STDERR, "Piwigo-Datenbankkonfiguration ist unvollstaendig: $key\n");
+    exit(1);
+  }
+}
+
+$db = new mysqli($conf['db_host'], $conf['db_user'], $conf['db_password'], $conf['db_base']);
+if ($db->connect_errno)
+{
+  fwrite(STDERR, "Piwigo-Datenbank ist nicht erreichbar: ".$db->connect_error."\n");
+  exit(1);
+}
+$db->set_charset('utf8mb4');
+
+$table = $prefixeTable.'bratonien_tools_nc_connections';
+$result = $db->query('SELECT config_json FROM `'.$table.'` WHERE id='.$connection_id.' LIMIT 1');
+if (!$result || !$result->num_rows)
+{
+  fwrite(STDERR, "Connector-Verbindung #$connection_id wurde nicht gefunden.\n");
+  exit(1);
+}
+$config = json_decode((string)$result->fetch_assoc()['config_json'], true);
+if (!is_array($config) || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder')
+{
+  echo "Keine WebDAV-Bereinigung erforderlich.\n";
+  exit(0);
+}
+
+$prefixes = array(
+  './_data/bratonien-tools/nc-webdav-gallery/connection-'.$connection_id.'/',
+  './_data/bratonien-tools/nc-webdav-source/connection-'.$connection_id.'/',
+  './galleries/bratonien-webdav-'.$connection_id.'/',
+);
+
+$gallery_root = rtrim(str_replace('\\', '/', (string)($config['parallel_gallery_root'] ?? '')), '/');
+$normalized_piwigo_root = rtrim(str_replace('\\', '/', $piwigo_root), '/');
+if ($gallery_root !== '' && strpos($gallery_root, $normalized_piwigo_root.'/') === 0)
+{
+  $relative = ltrim(substr($gallery_root, strlen($normalized_piwigo_root)), '/');
+  if ($relative !== '') $prefixes[] = './'.rtrim($relative, '/').'/';
+}
+$prefixes = array_values(array_unique($prefixes));
+
+$where = array();
+foreach ($prefixes as $prefix)
+{
+  $escaped = $db->real_escape_string(addcslashes($prefix, "_%\\"));
+  $where[] = "path LIKE '{$escaped}%' ESCAPE '\\\\'";
+}
+
+$images_table = $prefixeTable.'images';
+$rows = $db->query("SELECT id, path FROM `{$images_table}` WHERE ".implode(' OR ', $where));
+if (!$rows)
+{
+  fwrite(STDERR, "Connector-Bilder konnten nicht gelesen werden: ".$db->error."\n");
+  exit(1);
+}
+
+$missing_ids = array();
+while ($row = $rows->fetch_assoc())
+{
+  $path = (string)$row['path'];
+  $owned = false;
+  foreach ($prefixes as $prefix)
+  {
+    if (strpos($path, $prefix) === 0)
+    {
+      $owned = true;
+      break;
+    }
+  }
+  if (!$owned) continue;
+
+  $absolute = $piwigo_root.'/'.ltrim(preg_replace('#^\./#', '', $path), '/');
+  if (!is_file($absolute))
+  {
+    $missing_ids[] = (int)$row['id'];
+  }
+}
+$db->close();
+
+if (!$missing_ids)
+{
+  echo "WebDAV-Bereinigung: keine fehlenden Piwigo-Bilder.\n";
+  exit(0);
+}
+
+// Dieser Prozess wird ausschliesslich nach einem erfolgreich abgeschlossenen
+// WebDAV-Aufbau und erfolgreicher Piwigo-Synchronisierung gestartet. Eine
+// nicht erreichbare Verbindung kann deshalb niemals ueber diesen Pfad Bilder
+// entfernen.
+define('PHPWG_ROOT_PATH', $piwigo_root.'/');
+$_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'] = '/';
+$_SERVER['SCRIPT_NAME'] = '/plugins/bratonien_tools/runtime/cleanup-missing-webdav-images.php';
+$_SERVER['PHP_SELF'] = $_SERVER['SCRIPT_NAME'];
+$_SERVER['QUERY_STRING'] = '';
+$_SERVER['HTTPS'] = 'off';
+
+require_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
+
+$deleted = delete_elements(array_values(array_unique(array_map('intval', $missing_ids))), false);
+update_category('all');
+invalidate_user_cache(true);
+
+echo 'WebDAV-Bereinigung: '.(int)$deleted." nicht mehr freigegebene/vorhandene Bilder aus Piwigo entfernt.\n";
--- a/runtime/cleanup-webdav-piwigo.php
+++ b/runtime/cleanup-webdav-piwigo.php
@@ -47,24 +47,31 @@ function bratonien_cleanup_tree($path, $allowed_root)
  @rmdir($path);
 }

-function bratonien_webdav_site_images($site_id)
+function bratonien_connection_id_from_owned_path($path)
 {
-  $rows = array();
-  $query = '
-SELECT DISTINCT i.id, i.path, i.representative_ext
-  FROM '.IMAGES_TABLE.' AS i
-  LEFT JOIN '.CATEGORIES_TABLE.' AS sc ON sc.id = i.storage_category_id
-  LEFT JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON ic.image_id = i.id
-  LEFT JOIN '.CATEGORIES_TABLE.' AS vc ON vc.id = ic.category_id
-  WHERE sc.site_id = '.(int)$site_id.' OR vc.site_id = '.(int)$site_id.'
-;';
-  $result = pwg_query($query);
-  while ($row = pwg_db_fetch_assoc($result))
+  $path = (string)$path;
+  foreach (array(
+    '#^\./_data/bratonien-tools/nc-webdav-gallery/connection-([0-9]+)/#',
+    '#^\./_data/bratonien-tools/nc-webdav-source/connection-([0-9]+)/#',
+    '#^\./galleries/bratonien-webdav-([0-9]+)/#',
+  ) as $pattern)
  {
-    $row['id'] = (int)$row['id'];
-    $rows[$row['id']] = $row;
+    if (preg_match($pattern, $path, $match)) return (int)$match[1];
  }
-  return $rows;
+  return 0;
+}
+
+function bratonien_connection_id_from_site_url($url)
+{
+  $url = (string)$url;
+  foreach (array(
+    '#^\./_data/bratonien-tools/nc-webdav-gallery/connection-([0-9]+)/$#',
+    '#^\./galleries/bratonien-webdav-([0-9]+)/$#',
+  ) as $pattern)
+  {
+    if (preg_match($pattern, $url, $match)) return (int)$match[1];
+  }
+  return 0;
 }

 try
@@ -84,24 +91,24 @@ try
    }
  }

-  $site_prefix = './_data/bratonien-tools/nc-webdav-gallery/connection-';
-  $result = pwg_query(
-    "SELECT id, galleries_url FROM ".SITES_TABLE.
-    " WHERE galleries_url LIKE '".pwg_db_real_escape_string($site_prefix)."%'"
-  );
-
-  $removed_sites = 0;
  $removed_images = 0;
-  while ($site = pwg_db_fetch_assoc($result))
+  $stale_by_connection = array();
+  $result = pwg_query(
+    "SELECT id, path, representative_ext FROM ".IMAGES_TABLE.
+    " WHERE path LIKE './_data/bratonien-tools/nc-webdav-gallery/connection-%'".
+    " OR path LIKE './_data/bratonien-tools/nc-webdav-source/connection-%'".
+    " OR path LIKE './galleries/bratonien-webdav-%'"
+  );
+  while ($row = pwg_db_fetch_assoc($result))
  {
-    $site_id = (int)$site['id'];
-    $site_url = (string)$site['galleries_url'];
-    if (!preg_match('#^\./_data/bratonien-tools/nc-webdav-gallery/connection-([0-9]+)/$#', $site_url, $match)) continue;
-
-    $connection_id = (int)$match[1];
+    $connection_id = bratonien_connection_id_from_owned_path($row['path'] ?? '');
    if ($connection_id < 1 || isset($active[$connection_id])) continue;
+    $row['id'] = (int)$row['id'];
+    $stale_by_connection[$connection_id][$row['id']] = $row;
+  }

-    $images = bratonien_webdav_site_images($site_id);
+  foreach ($stale_by_connection as $connection_id=>$images)
+  {
    foreach ($images as $row)
    {
      try
@@ -114,48 +121,60 @@ try
      }
    }

-    delete_site($site_id);
-
-    if ($images)
-    {
-      $ids = array_keys($images);
-      $remaining = query2array(
-        'SELECT id FROM '.IMAGES_TABLE.' WHERE id IN ('.implode(',', array_map('intval', $ids)).')',
-        null,
-        'id'
-      );
-      if ($remaining)
-      {
-        delete_elements(array_map('intval', $remaining), false);
-      }
-    }
-
-    $removed_sites++;
+    delete_elements(array_map('intval', array_keys($images)), false);
    $removed_images += count($images);
-    echo 'NC WebDAV: entferne verwaiste Piwigo-Site '.$site_id.' für gelöschte Verbindung '.$connection_id.".\n";
+    echo 'NC WebDAV: entferne '.count($images).' verwaiste Bilder der gelöschten Verbindung '.$connection_id.".\n";
+  }

-    $gallery_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-gallery';
-    $source_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-source';
-    $preview_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-preview';
+  $removed_sites = 0;
+  $result = pwg_query('SELECT id, galleries_url FROM '.SITES_TABLE);
+  $stale_sites = array();
+  while ($site = pwg_db_fetch_assoc($result))
+  {
+    $connection_id = bratonien_connection_id_from_site_url($site['galleries_url'] ?? '');
+    if ($connection_id < 1 || isset($active[$connection_id])) continue;
+    $stale_sites[] = array('id'=>(int)$site['id'], 'connection_id'=>$connection_id);
+  }
+
+  foreach ($stale_sites as $site)
+  {
+    delete_site($site['id']);
+    $removed_sites++;
+    echo 'NC WebDAV: entferne verwaiste Piwigo-Site '.$site['id'].' der gelöschten Verbindung '.$site['connection_id'].".\n";
+  }
+
+  $stale_connection_ids = array_unique(array_merge(
+    array_map('intval', array_keys($stale_by_connection)),
+    array_map(function($site) { return (int)$site['connection_id']; }, $stale_sites)
+  ));
+
+  $gallery_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-gallery';
+  $source_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-source';
+  $preview_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-preview';
+  $legacy_root = PHPWG_ROOT_PATH.'galleries';
+  $state_root = '/var/lib/bratonien-tools/nc-connector';
+  $status_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-connector-status';
+
+  foreach ($stale_connection_ids as $connection_id)
+  {
+    if ($connection_id < 1) continue;
    bratonien_cleanup_tree($gallery_root.'/connection-'.$connection_id, $gallery_root);
    bratonien_cleanup_tree($source_root.'/connection-'.$connection_id, $source_root);
    bratonien_cleanup_tree($preview_root.'/connection-'.$connection_id, $preview_root);
-
-    $state_root = '/var/lib/bratonien-tools/nc-connector';
+    bratonien_cleanup_tree($legacy_root.'/bratonien-webdav-'.$connection_id, $legacy_root);
    bratonien_cleanup_tree($state_root.'/connection-'.$connection_id, $state_root);

    foreach (glob('/etc/bratonien-tools/nc-connector/webdav-connection-'.$connection_id.'.*') ?: array() as $file)
    {
      @unlink($file);
    }
-
-    $status_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-connector-status';
    @unlink($status_root.'/connection-'.$connection_id.'.json');
    @unlink($status_root.'/deleted-'.$connection_id);
  }

-  if ($removed_sites > 0)
+  if ($removed_sites > 0 || $removed_images > 0)
  {
+    update_category('all');
    invalidate_user_cache(true);
  }

--- a/runtime/lib/build-webdav-derivatives.php
+++ b/runtime/lib/build-webdav-derivatives.php
@@ -6,8 +6,6 @@ if (PHP_SAPI !== 'cli')
  exit(1);
 }

-const BRATONIEN_WEBDAV_DERIVATIVE_BUILDER_VERSION = '0.9.7.8';
-
 $options = getopt('', array('piwigo-root:', 'connection-id:'));
 $piwigo_root = rtrim((string)($options['piwigo-root'] ?? ''), '/');
 $connection_id = (int)($options['connection-id'] ?? 0);
@@ -33,99 +31,24 @@ $_SERVER['REQUEST_URI'] = '/';
 $_SERVER['SCRIPT_NAME'] = '/plugins/bratonien_tools/runtime/lib/build-webdav-derivatives.php';
 $_SERVER['PHP_SELF'] = $_SERVER['SCRIPT_NAME'];
 $_SERVER['QUERY_STRING'] = '';
-$_SERVER['HTTP_USER_AGENT'] = 'Bratonien-WebDAV-Derivative-Builder/'.BRATONIEN_WEBDAV_DERIVATIVE_BUILDER_VERSION;
 $_SERVER['HTTPS'] = 'off';

 require_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-require_once(PHPWG_ROOT_PATH.'include/derivative.inc.php');
-require_once(PHPWG_ROOT_PATH.'admin/include/image.class.php');

-if (!function_exists('bratonien_tools_webdav_image_source_info') || !function_exists('bratonien_tools_webdav_generate_derivative'))
+if (!function_exists('bratonien_tools_webdav_image_source_info') || !function_exists('bratonien_tools_webdav_preview_path'))
 {
  fwrite(STDERR, "Bratonien WebDAV-Bildruntime ist nicht aktiv.\n");
  exit(1);
 }

-function bratonien_tools_webdav_modus_config()
-{
-  global $conf;
-
-  $modus = $conf['modus_theme'] ?? array();
-  if (is_string($modus) && $modus !== '')
-  {
-    $decoded = @unserialize($modus);
-    if (is_array($decoded)) $modus = $decoded;
-  }
-  if (!is_array($modus)) $modus = array();
-
-  return array_merge(
-    array(
-      'index_photo_deriv'=>'2small',
-      'index_photo_deriv_hdpi'=>'xsmall',
-    ),
-    $modus
-  );
-}
-
-function bratonien_tools_webdav_gallery_base_params()
-{
-  $modus = bratonien_tools_webdav_modus_config();
-  $type = trim((string)($modus['index_photo_deriv'] ?? '2small'));
-  $params = $type !== '' ? @ImageStdParams::get_by_type($type) : null;
-  if ($params) return $params;
-
-  $params = ImageStdParams::get_by_type(IMG_THUMB);
-  if (!$params)
-  {
-    throw new RuntimeException('Piwigo-Galeriederivat ist nicht konfiguriert.');
-  }
-  return $params;
-}
-
-function bratonien_tools_webdav_modus_gallery_params(SrcImage $src, $base_params)
-{
-  $row_height = (int)$base_params->max_height();
-  $candidates = array($base_params);
-
-  foreach (ImageStdParams::get_defined_type_map() as $params)
-  {
-    if (
-      $params->max_height() > $row_height
-      && $params->sizing->max_crop == $base_params->sizing->max_crop
-    )
-    {
-      $candidates[] = $params;
-      if (count($candidates) === 3) break;
-    }
-  }
-
-  $selected = $base_params;
-  foreach ($candidates as $params)
-  {
-    $selected = $params;
-    $probe = new DerivativeImage($params, $src);
-    $size = $probe->get_size();
-    if ((int)$size[1] >= $row_height - 2) break;
-  }
-
-  return $selected;
-}
-
 try
 {
-  $gallery_base_params = bratonien_tools_webdav_gallery_base_params();
-  $gallery_base_type = (string)$gallery_base_params->type;
-
  $images = 0;
-  $generated_or_ready = 0;
-  $identity = 0;
-  $metadata_repaired = 0;
-  $legacy_derivatives_rebuilt = 0;
+  $updated = 0;
  $errors = 0;
  $error_lines = array();
-  $variant_counts = array();

-  $result = pwg_query('SELECT * FROM '.IMAGES_TABLE.' ORDER BY id');
+  $result = pwg_query('SELECT id, width, height, rotation FROM '.IMAGES_TABLE.' ORDER BY id');
  while ($row = pwg_db_fetch_assoc($result))
  {
    $image_id = (int)$row['id'];
@@ -141,14 +64,6 @@ try
      continue;
    }

-    $preview_ext = strtolower(pathinfo($preview, PATHINFO_EXTENSION));
-    if (!in_array($preview_ext, array('jpg', 'jpeg', 'png', 'gif'), true))
-    {
-      $errors++;
-      $error_lines[] = 'Bild #'.$image_id.': Preview-Format '.$preview_ext.' ist nicht Piwigo-kompatibel; Precache muss neu erzeugt werden.';
-      continue;
-    }
-
    $size = @getimagesize($preview);
    if (!is_array($size) || empty($size[0]) || empty($size[1]))
    {
@@ -157,117 +72,41 @@ try
      continue;
    }

-    $preview_width = (int)$size[0];
-    $preview_height = (int)$size[1];
-    if ((int)($row['width'] ?? 0) !== $preview_width || (int)($row['height'] ?? 0) !== $preview_height || (int)($row['rotation'] ?? 0) !== 0)
+    $width = (int)$size[0];
+    $height = (int)$size[1];
+    if ((int)($row['width'] ?? 0) === $width && (int)($row['height'] ?? 0) === $height && (int)($row['rotation'] ?? 0) === 0)
    {
-      pwg_query(
-        'UPDATE '.IMAGES_TABLE.
-        ' SET width='.$preview_width.', height='.$preview_height.', rotation=0'.
-        ' WHERE id='.$image_id
-      );
-      $row['width'] = $preview_width;
-      $row['height'] = $preview_height;
-      $row['rotation'] = 0;
-      $metadata_repaired++;
+      continue;
    }

-    $src = new SrcImage($row);
-    try
-    {
-      $gallery_params = bratonien_tools_webdav_modus_gallery_params($src, $gallery_base_params);
-      $variant = (string)$gallery_params->type;
-      if ($variant === '') $variant = 'custom';
-      $variant_counts[$variant] = ($variant_counts[$variant] ?? 0) + 1;
-
-      $probe = new DerivativeImage($gallery_params, $src);
-      if ($probe->same_as_source())
-      {
-        $identity++;
-        continue;
-      }
-
-      $target = $probe->get_path();
-      if ($target !== '' && is_file($target) && is_readable($target))
-      {
-        $expected_size = $gallery_params->compute_final_size(array($preview_width, $preview_height));
-        $existing_size = @getimagesize($target);
-        if (
-          is_array($expected_size)
-          && isset($expected_size[0], $expected_size[1])
-          && is_array($existing_size)
-          && isset($existing_size[0], $existing_size[1])
-          && ((int)$existing_size[0] !== (int)$expected_size[0] || (int)$existing_size[1] !== (int)$expected_size[1])
-        )
-        {
-          if (!@unlink($target))
-          {
-            $errors++;
-            $error_lines[] = 'Bild #'.$image_id.' Galerie: falsches Alt-Derivat konnte nicht entfernt werden: '.$target;
-            continue;
-          }
-          $legacy_derivatives_rebuilt++;
-        }
-      }
-
-      $detail = '';
-      if (bratonien_tools_webdav_generate_derivative($gallery_params, $src, $detail))
-      {
-        $generated_or_ready++;
-      }
-      else
-      {
-        $errors++;
-        $error_lines[] = 'Bild #'.$image_id.' Galerie: '.($detail !== '' ? $detail : 'Galeriederivat konnte nicht erzeugt werden.');
-      }
-    }
-    catch (Throwable $e)
-    {
-      $errors++;
-      $error_lines[] = 'Bild #'.$image_id.' Galerie: '.get_class($e).': '.$e->getMessage();
-    }
+    pwg_query(
+      'UPDATE '.IMAGES_TABLE.
+      ' SET width='.$width.', height='.$height.', rotation=0'.
+      ' WHERE id='.$image_id
+    );
+    $updated++;
  }

-  if ($metadata_repaired > 0)
+  if ($updated > 0)
  {
    update_category('all');
    invalidate_user_cache(true);
  }

-  if ($errors > 0)
+  foreach (array_slice($error_lines, 0, 30) as $line)
  {
-    foreach (array_slice($error_lines, 0, 30) as $line)
-    {
-      fwrite(STDERR, $line."\n");
-    }
-    if (count($error_lines) > 30)
-    {
-      fwrite(STDERR, 'Weitere Fehler: '.(count($error_lines) - 30)."\n");
-    }
+    fwrite(STDERR, $line."\n");
+  }
+  if (count($error_lines) > 30)
+  {
+    fwrite(STDERR, 'Weitere Fehler: '.(count($error_lines) - 30)."\n");
  }

-  ksort($variant_counts);
-  $variant_parts = array();
-  foreach ($variant_counts as $type=>$count)
-  {
-    $variant_parts[] = $type.':'.$count;
-  }
-
-  echo 'WebDAV-Derivative-Builder: version='.BRATONIEN_WEBDAV_DERIVATIVE_BUILDER_VERSION.
-    ' bilder='.$images.
-    ' varianten_pro_bild=1'.
-    ' modus_basis='.$gallery_base_type.
-    ' modus_varianten='.implode(',', $variant_parts).
-    ' bereit='.$generated_or_ready.
-    ' identisch='.$identity.
-    ' metadaten_repariert='.$metadata_repaired.
-    ' alt_derivate_neu='.$legacy_derivatives_rebuilt.
-    ' fehler='.$errors."\n";
-
+  echo 'WebDAV-Metadaten: bilder='.$images.' aktualisiert='.$updated.' fehler='.$errors."\n";
  exit($errors > 0 ? 1 : 0);
 }
 catch (Throwable $e)
 {
-  fwrite(STDERR, 'WebDAV-Derivate: '.get_class($e).': '.$e->getMessage()."\n");
+  fwrite(STDERR, 'WebDAV-Metadaten: '.get_class($e).': '.$e->getMessage()."\n");
  exit(1);
 }
--- a/runtime/lib/precache-webdav-previews.php
+++ b/runtime/lib/precache-webdav-previews.php
@@ -34,7 +34,7 @@ function fetch_remote_blob($url, $user, $password)
    CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
    CURLOPT_USERPWD => $user.':'.$password,
    CURLOPT_FAILONERROR => false,
-    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.7.1',
+    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.7.16',
  );
  bratonien_tools_nc_transport_apply_curl($options, $url);
  curl_setopt_array($ch, $options);
@@ -52,12 +52,11 @@ function fetch_remote_blob($url, $user, $password)

 function preview_extension_for_entry(array $entry)
 {
-  $content_type = strtolower(trim((string)($entry['content_type'] ?? '')));
  $path = strtolower((string)($entry['webdav_path'] ?? ''));
-  if ($content_type === 'image/png' || preg_match('/\.png$/', $path))
-  {
-    return 'png';
-  }
+  $extension = strtolower(pathinfo($path, PATHINFO_EXTENSION));
+  if ($extension === 'png') return 'png';
+  if ($extension === 'gif') return 'gif';
+  if ($extension === 'webp') return 'webp';
  return 'jpg';
 }

@@ -68,7 +67,7 @@ function preview_target_for_entry($cache_dir, $key, array $entry)

 function remove_other_preview_format($cache_dir, $key, $keep_target)
 {
-  foreach (array('jpg', 'png', 'webp') as $ext)
+  foreach (array('jpg', 'png', 'gif', 'webp') as $ext)
  {
    $candidate = $cache_dir.'/'.$key.'.'.$ext;
    if ($candidate !== $keep_target && is_file($candidate)) @unlink($candidate);
@@ -90,13 +89,19 @@ function write_preview_imagick($blob, $target, $extension)
    {
      $image->setImageFormat('png');
    }
+    elseif ($extension === 'gif')
+    {
+      $image->setImageFormat('gif');
+    }
+    elseif ($extension === 'webp')
+    {
+      $image->setImageFormat('webp');
+      $image->setImageCompressionQuality(BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
+    }
    else
    {
      $image->setImageBackgroundColor('white');
-      if (method_exists($image, 'mergeImageLayers'))
-      {
-        $image = $image->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);
-      }
+      if (method_exists($image, 'mergeImageLayers')) $image = $image->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);
      $image->setImageFormat('jpeg');
      $image->setImageCompression(Imagick::COMPRESSION_JPEG);
      $image->setImageCompressionQuality(BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
@@ -131,7 +136,7 @@ function write_preview_gd($blob, $target, $extension)

    try
    {
-      if ($extension === 'png')
+      if (in_array($extension, array('png', 'gif', 'webp'), true))
      {
        imagealphablending($preview, false);
        imagesavealpha($preview, true);
@@ -149,10 +154,12 @@ function write_preview_gd($blob, $target, $extension)
        fail_preview('GD konnte das Preview nicht skalieren.');
      }

-      $written = $extension === 'png'
-        ? imagepng($preview, $target, 6)
-        : imagejpeg($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
-      if (!$written) fail_preview('GD konnte das Preview nicht schreiben.');
+      if ($extension === 'png') $written = imagepng($preview, $target, 6);
+      elseif ($extension === 'gif') $written = function_exists('imagegif') ? imagegif($preview, $target) : false;
+      elseif ($extension === 'webp') $written = function_exists('imagewebp') ? imagewebp($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY) : false;
+      else $written = imagejpeg($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
+
+      if (!$written) fail_preview('GD konnte das Preview im Format '.$extension.' nicht schreiben.');
    }
    finally
    {
@@ -168,7 +175,7 @@ function write_preview_gd($blob, $target, $extension)
 function write_preview($blob, $target, $extension)
 {
  $dir = dirname($target);
-  if (!is_dir($dir) && !mkdir($dir, 0755, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');
+  if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');

  if (class_exists('Imagick'))
  {
@@ -190,7 +197,48 @@ function write_preview($blob, $target, $extension)
    @unlink($target);
    fail_preview('Das erzeugte Preview ist ungültig.');
  }
-  @chmod($target, 0644);
+  @chmod($target, 0664);
+}
+
+function local_source_is_hydrated($source_path, $preview)
+{
+  if (!is_file($source_path) || !is_readable($source_path)) return false;
+  $source_size = @getimagesize($source_path);
+  $preview_size = @getimagesize($preview);
+  if (!is_array($source_size) || !is_array($preview_size)) return false;
+  if ((int)$source_size[0] !== (int)$preview_size[0] || (int)$source_size[1] !== (int)$preview_size[1]) return false;
+  $source_bytes = @filesize($source_path);
+  $preview_bytes = @filesize($preview);
+  return $source_bytes !== false && $preview_bytes !== false && (int)$source_bytes === (int)$preview_bytes;
+}
+
+function hydrate_local_source($source_path, $preview)
+{
+  $normalized = str_replace('\\', '/', (string)$source_path);
+  if (!preg_match('#/nc-webdav-source/connection-[0-9]+/root-[0-9]+/#', $normalized))
+  {
+    fail_preview('Unsicherer lokaler Connector-Quellpfad: '.$source_path);
+  }
+  if (!is_file($preview) || !is_readable($preview)) fail_preview('Preview für lokale Quelle fehlt: '.$preview);
+  if (local_source_is_hydrated($source_path, $preview)) return false;
+
+  $dir = dirname($source_path);
+  if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) fail_preview('Lokales Connector-Verzeichnis konnte nicht angelegt werden: '.$dir);
+
+  $tmp = $source_path.'.bratonien-next-'.getmypid();
+  if (!@copy($preview, $tmp)) fail_preview('Preview konnte nicht in lokale Piwigo-Quelle kopiert werden: '.$source_path);
+  @chmod($tmp, 0664);
+  $mtime = @filemtime($preview);
+  if ($mtime) @touch($tmp, $mtime);
+  if (!@rename($tmp, $source_path))
+  {
+    @unlink($tmp);
+    fail_preview('Lokale Piwigo-Quelle konnte nicht ersetzt werden: '.$source_path);
+  }
+  clearstatcache(true, $source_path);
+  $size = @getimagesize($source_path);
+  if (!is_array($size) || empty($size[0]) || empty($size[1])) fail_preview('Lokale Piwigo-Quelle ist nach dem Ersetzen ungültig: '.$source_path);
+  return true;
 }

 try
@@ -212,8 +260,8 @@ try
  $mapping = json_decode((string)file_get_contents($mapping_file), true);
  if (!is_array($mapping) || !isset($mapping['files']) || !is_array($mapping['files'])) fail_preview('WebDAV-Mapping ist ungültig.');

-  if (!is_dir($cache_dir) && !mkdir($cache_dir, 0755, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
-  @chmod($cache_dir, 0755);
+  if (!is_dir($cache_dir) && !mkdir($cache_dir, 0775, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
+  @chmod($cache_dir, 2775);

  $state_file = $cache_dir.'/state.json';
  $old_state = array();
@@ -226,9 +274,10 @@ try
  $new_state = array();
  $generated = 0;
  $cached = 0;
+  $hydrated = 0;
  $errors = 0;

-  foreach ($mapping['files'] as $entry)
+  foreach ($mapping['files'] as $local_path=>$entry)
  {
    if (!is_array($entry) || (string)($entry['kind'] ?? '') !== 'file') continue;
    $webdav_path = trim((string)($entry['webdav_path'] ?? ''), '/');
@@ -245,26 +294,29 @@ try
      'version' => BRATONIEN_WEBDAV_PREVIEW_VERSION,
    );

-    $old = $old_state[$key] ?? null;
-    if (
-      is_file($target)
-      && is_array($old)
-      && (string)($old['etag'] ?? '') === $etag
-      && (string)($old['format'] ?? '') === $extension
-      && (int)($old['version'] ?? 0) === BRATONIEN_WEBDAV_PREVIEW_VERSION
-    )
-    {
-      $cached++;
-      continue;
-    }
-
    try
    {
-      $url = $base_url.'/remote.php/dav/files/'.rawurlencode($user).'/'.quote_webdav_path($webdav_path);
-      $blob = fetch_remote_blob($url, $user, $password);
-      write_preview($blob, $target, $extension);
-      remove_other_preview_format($cache_dir, $key, $target);
-      $generated++;
+      $old = $old_state[$key] ?? null;
+      $valid_cached = is_file($target)
+        && is_array($old)
+        && (string)($old['etag'] ?? '') === $etag
+        && (string)($old['format'] ?? '') === $extension
+        && (int)($old['version'] ?? 0) === BRATONIEN_WEBDAV_PREVIEW_VERSION;
+
+      if (!$valid_cached)
+      {
+        $url = $base_url.'/remote.php/dav/files/'.rawurlencode($user).'/'.quote_webdav_path($webdav_path);
+        $blob = fetch_remote_blob($url, $user, $password);
+        write_preview($blob, $target, $extension);
+        remove_other_preview_format($cache_dir, $key, $target);
+        $generated++;
+      }
+      else
+      {
+        $cached++;
+      }
+
+      if (hydrate_local_source((string)$local_path, $target)) $hydrated++;
    }
    catch (Throwable $e)
    {
@@ -277,14 +329,14 @@ try
  {
    if (!is_file($file) || basename($file) === 'state.json') continue;
    $name = basename($file);
-    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|webp)$/', $name, $m)) continue;
+    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|gif|webp)$/', $name, $m)) continue;
    if (!isset($new_state[$m[1]])) @unlink($file);
  }

  file_put_contents($state_file, json_encode($new_state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT)."\n", LOCK_EX);
-  @chmod($state_file, 0644);
+  @chmod($state_file, 0664);

-  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' fehler='.$errors."\n";
+  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' lokale_quellen='.$hydrated.' fehler='.$errors."\n";
  exit($errors > 0 ? 1 : 0);
 }
 catch (Throwable $e)
--- a/runtime/repair-webdav-cache-permissions.sh
+++ b/runtime/repair-webdav-cache-permissions.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+PIWIGO_ROOT="${1:-/var/www/piwigo}"
+PIWIGO_ROOT="${PIWIGO_ROOT%/}"
+DATA_DIR="$PIWIGO_ROOT/_data"
+
+[[ -d "$DATA_DIR" ]] || { echo "Piwigo-_data wurde nicht gefunden: $DATA_DIR" >&2; exit 1; }
+[[ "$(id -u)" -eq 0 ]] || { echo "Die Reparatur muss als root ausgeführt werden." >&2; exit 1; }
+
+DATA_UID="$(stat -c '%u' "$DATA_DIR")"
+DATA_GID="$(stat -c '%g' "$DATA_DIR")"
+
+PATHS=(
+  "$DATA_DIR/bratonien-tools/nc-webdav-gallery"
+  "$DATA_DIR/bratonien-tools/nc-webdav-preview"
+  "$DATA_DIR/i/_data/bratonien-tools/nc-webdav-gallery"
+  "$DATA_DIR/i/bratonien-watermark"
+)
+
+found=0
+for path in "${PATHS[@]}"; do
+  [[ -e "$path" ]] || continue
+  found=1
+  echo "Repariere: $path"
+  chown -R "$DATA_UID:$DATA_GID" -- "$path"
+  find "$path" -type d -exec chmod 2775 {} +
+  find "$path" -type f -exec chmod 0664 {} +
+done
+
+if [[ "$found" -eq 0 ]]; then
+  echo "Keine Bratonien-Cache-Verzeichnisse gefunden."
+  exit 0
+fi
+
+echo "Bratonien-Cache-Rechte wurden an $DATA_DIR angeglichen (UID $DATA_UID, GID $DATA_GID)."
--- a/template/admin_tabs.tpl
+++ b/template/admin_tabs.tpl
@@ -9,13 +9,7 @@
 .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; }
-.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} }
+@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} }
 </style>
 <div id="bratonien-tabs-anchor"></div>
 <script>
@@ -59,19 +53,15 @@

    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 setMode(value){try{if(value)sessionStorage.setItem(modeKey,value);else sessionStorage.removeItem(modeKey);}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(mode()==='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';
@@ -90,13 +80,13 @@
      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);clearMode();
+      if(resetBusy)return;resetBusy=true;setOpen(false);setMode('');
      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();clearMode();showWizard();
+        event.preventDefault();event.stopImmediatePropagation();setMode('');showWizard();
      },true);
    }
    if(closeButton){
@@ -105,111 +95,33 @@
    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);
+
      [].slice.call(dialog.querySelectorAll('form[data-bratonien-wizard-form]')).forEach(function(form){
        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();
+            if(submitter.value==='nc_connector_wizard_reset'||submitter.value==='nc_connector_wizard_finish')setMode('');
          }
        },true);
      });
+
+      [].slice.call(section.querySelectorAll('form')).forEach(function(form){
+        var editButton=form.querySelector('button[value="nc_connector_edit_start"]');
+        if(!editButton)return;
+        form.addEventListener('submit',function(event){
+          if(event.submitter&&event.submitter.value==='nc_connector_edit_start'){
+            setMode('edit');setOpen(true);
+          }
+        },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';
@@ -262,7 +174,7 @@
    poll();schedule();
  }

-  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectionEditing();initNCConnectorPolling();}
+  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectorPolling();}
  if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',initAll);else initAll();
 })();
 </script>
--- a/tools/album_rules.inc.php
+++ b/tools/album_rules.inc.php
@@ -93,37 +93,7 @@ function bratonien_tools_resolve_album_rule($category_id, array $categories, arr
    $by_id[(int)$category['id']] = $category;
  }

-  $category_id = (int)$category_id;
-  $root = $by_id[$category_id] ?? null;
-  $is_private = $root && isset($root['status']) && $root['status'] === 'private';
-
-  // Privat ist eine Vererbungsgrenze. Eine direkt auf diesem privaten Album
-  // gesetzte Regel bleibt moeglich, aber Regeln oeffentlicher Eltern duerfen
-  // nicht in ein privates Album hineinvererbt werden.
-  if ($is_private)
-  {
-    if (isset($rules[$category_id]))
-    {
-      $rule = $rules[$category_id];
-      if ($rule['mode'] === 'disabled')
-      {
-        return array('mode'=>'disabled','profile_id'=>null,'source'=>'album');
-      }
-      if ($rule['mode'] === 'profile')
-      {
-        return array('mode'=>'profile','profile_id'=>(int)$rule['profile_id'],'source'=>'album');
-      }
-    }
-
-    $profile_id = $defaults['private_profile'] ?? null;
-    if (empty($profile_id))
-    {
-      return array('mode'=>'disabled','profile_id'=>null,'source'=>'global');
-    }
-    return array('mode'=>'profile','profile_id'=>(int)$profile_id,'source'=>'global');
-  }
-
-  $current = $category_id;
+  $current = (int)$category_id;
  $visited = array();

  while ($current > 0 && isset($by_id[$current]) && !isset($visited[$current]))
@@ -146,7 +116,10 @@ function bratonien_tools_resolve_album_rule($category_id, array $categories, arr
    $current = (int)($by_id[$current]['id_uppercat'] ?? 0);
  }

-  $profile_id = $defaults['public_profile'] ?? null;
+  $root = $by_id[(int)$category_id] ?? null;
+  $is_private = $root && isset($root['status']) && $root['status'] === 'private';
+  $profile_id = $is_private ? ($defaults['private_profile'] ?? null) : ($defaults['public_profile'] ?? null);
+
  if (empty($profile_id))
  {
    return array('mode'=>'disabled','profile_id'=>null,'source'=>'global');
--- a/webdav-derivative.php
+++ b/webdav-derivative.php
@@ -1,126 +0,0 @@
-<?php
-define('PHPWG_ROOT_PATH', '../../');
-include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-
-if (!defined('BRATONIEN_TOOLS_PATH'))
-{
-  define('BRATONIEN_TOOLS_ID', basename(__DIR__));
-  define('BRATONIEN_TOOLS_PATH', PHPWG_ROOT_PATH.'plugins/'.BRATONIEN_TOOLS_ID.'/');
-}
-
-require_once(BRATONIEN_TOOLS_PATH.'include/webdav_image_runtime.inc.php');
-require_once(BRATONIEN_TOOLS_PATH.'include/webdav_gallery_runtime.inc.php');
-
-function bratonien_tools_webdav_derivative_abort($status, $message)
-{
-  http_response_code((int)$status);
-  header('Content-Type: text/plain; charset=utf-8');
-  header('Cache-Control: no-store');
-  echo $message;
-  exit;
-}
-
-$image_id = (int)($_GET['id'] ?? 0);
-$type = trim((string)($_GET['type'] ?? ''));
-if ($image_id < 1 || $type === '')
-{
-  bratonien_tools_webdav_derivative_abort(400, 'Bild-ID oder Derivattyp fehlt.');
-}
-
-$permission_condition = get_sql_condition_FandF(array('forbidden_categories'=>'category_id'), null, true);
-$access_result = pwg_query('SELECT 1 FROM '.IMAGE_CATEGORY_TABLE.' WHERE image_id='.$image_id.' AND '.$permission_condition.' LIMIT 1');
-if (!pwg_db_num_rows($access_result))
-{
-  bratonien_tools_webdav_derivative_abort(403, 'Kein Zugriff auf dieses Bild.');
-}
-
-if (!class_exists('ImageStdParams') || !class_exists('DerivativeImage') || !class_exists('SrcImage'))
-{
-  require_once(PHPWG_ROOT_PATH.'include/derivative.inc.php');
-}
-
-$params = @ImageStdParams::get_by_type($type);
-if (!$params)
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Unbekannter Piwigo-Derivattyp.');
-}
-
-$result = pwg_query('SELECT * FROM '.IMAGES_TABLE.' WHERE id='.$image_id.' LIMIT 1');
-if (!pwg_db_num_rows($result))
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Bild wurde nicht gefunden.');
-}
-$row = pwg_db_fetch_assoc($result);
-$src = new SrcImage($row);
-$info = bratonien_tools_webdav_image_source_info($image_id);
-if (!$info)
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Keine WebDAV-Quelle fuer dieses Bild gefunden.');
-}
-
-$preview = bratonien_tools_webdav_preview_path($info);
-if (!$preview || !is_file($preview) || !is_readable($preview))
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Nextcloud-Preview ist noch nicht vorbereitet.');
-}
-
-$derivative = new DerivativeImage($params, $src);
-if ($derivative->same_as_source())
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Derivat entspricht der Platzhalterquelle und wird nicht ausgeliefert.');
-}
-
-$target = $derivative->get_path();
-if ($target === '')
-{
-  bratonien_tools_webdav_derivative_abort(500, 'Derivat-Zielpfad fehlt.');
-}
-
-if (!bratonien_tools_webdav_derivative_matches_preview($target, $params, $image_id))
-{
-  if (is_file($target))
-  {
-    @unlink($target);
-    clearstatcache(true, $target);
-  }
-
-  $detail = '';
-  if (!bratonien_tools_webdav_generate_derivative($params, $src, $detail))
-  {
-    error_log('Bratonien WebDAV on-demand derivative #'.$image_id.' type='.$type.': '.$detail);
-    bratonien_tools_webdav_derivative_abort(503, 'Derivat konnte noch nicht erzeugt werden.');
-  }
-}
-
-if (!bratonien_tools_webdav_derivative_matches_preview($target, $params, $image_id))
-{
-  bratonien_tools_webdav_derivative_abort(503, 'Erzeugtes Derivat ist noch nicht gueltig.');
-}
-
-$size = @filesize($target);
-$mtime = @filemtime($target) ?: time();
-$etag = sha1($target.'|'.$mtime.'|'.($size ?: 0));
-$extension = strtolower(pathinfo($target, PATHINFO_EXTENSION));
-$content_type = 'image/jpeg';
-if ($extension === 'png') $content_type = 'image/png';
-elseif ($extension === 'gif') $content_type = 'image/gif';
-elseif ($extension === 'webp') $content_type = 'image/webp';
-
-header('Content-Type: '.$content_type);
-if ($size !== false) header('Content-Length: '.(string)$size);
-header('ETag: "'.$etag.'"');
-header('Last-Modified: '.gmdate('D, d M Y H:i:s', $mtime).' GMT');
-header('Cache-Control: private, max-age=86400, must-revalidate');
-header('X-Content-Type-Options: nosniff');
-
-$client_etag = trim((string)($_SERVER['HTTP_IF_NONE_MATCH'] ?? ''), " \t\r\n\"");
-if ($client_etag !== '' && hash_equals($etag, $client_etag))
-{
-  http_response_code(304);
-  exit;
-}
-
-if (($_SERVER['REQUEST_METHOD'] ?? 'GET') !== 'HEAD')
-{
-  readfile($target);
-}
--- a/webdav-image.php
+++ b/webdav-image.php
@@ -121,7 +121,7 @@ $options = array(
  CURLOPT_USERPWD => $user.':'.$password,
  CURLOPT_RETURNTRANSFER => false,
  CURLOPT_FAILONERROR => false,
-  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.7.1',
+  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.7.16',
  CURLOPT_HEADERFUNCTION => function($ch, $line)
  {
    $length = strlen($line);
Author	SHA1	Message	Date
Terranom674	61988db337	Restore single-path NC admin UI	2026-08-19 23:59:56 +02:00
Terranom674	bdfea105cf	Keep request-local watermark performance cache	2026-08-19 23:58:13 +02:00
Terranom674	6f64cb9fe6	Restore stable admin tab behavior	2026-08-19 23:57:24 +02:00
Terranom674	65b068814f	Unify stale WebDAV cleanup across historical connector paths	2026-08-19 23:55:04 +02:00
Terranom674	e58d2c700a	Clean missing images across all connection path generations	2026-08-19 23:54:35 +02:00
Terranom674	afaea3b424	Delete all known path variants for one WebDAV connection	2026-08-19 23:54:17 +02:00
Terranom674	7a763ba62a	Reduce WebDAV builder to metadata refresh only	2026-08-19 23:53:38 +02:00
Terranom674	31e29db7c2	Remove obsolete destructive legacy reset	2026-08-19 23:53:11 +02:00
Terranom674	ab116d29c2	Remove destructive legacy reset from updates	2026-08-19 23:49:54 +02:00
Terranom674	46924db618	Remove parallel NC source picker endpoint	2026-08-19 23:49:36 +02:00
Terranom674	6e96b0adc3	Remove parallel NC edit save endpoint	2026-08-19 23:49:28 +02:00
Terranom674	b8f3ed44a3	Remove parallel NC edit data endpoint	2026-08-19 23:49:21 +02:00
Terranom674	cb3b2f258c	Disable parallel NC editor layer	2026-08-19 23:49:13 +02:00
Terranom674	ef1c1265a9	0.9.7.18: restore stable non-connector hooks	2026-08-19 23:48:40 +02:00
Terranom674	47d7000cc8	Restore stable watermark settings	2026-08-19 23:48:16 +02:00
Terranom674	c358c157e4	Restore stable watermark profile behavior	2026-08-19 23:48:06 +02:00
Terranom674	1d62dc17e8	Restore stable album watermark rules	2026-08-19 23:47:46 +02:00
Terranom674	ad4c281fdc	Restore stable watermark engine	2026-08-19 23:47:31 +02:00
Terranom674	a43a15a9d3	Restore stable watermark runtime	2026-08-19 23:47:13 +02:00
Terranom674	31b8590e4a	Merge pull request #39 from Terranom674/fix/09717-remove-missing-webdav-images 0.9.7.17: entfernte Freigaben sicher aus Piwigo bereinigen	2026-08-19 23:28:36 +02:00
Terranom674	c772010137	Version 0.9.7.17	2026-08-19 23:27:41 +02:00
Terranom674	d075d05708	0.9.7.17: Verbindungsloeschung ueber eigene Gallery-Root	2026-08-19 23:27:09 +02:00
Terranom674	a4fb7421f0	0.9.7.17: Bereinigung nur nach erfolgreichem WebDAV-Abruf	2026-08-19 23:26:53 +02:00
Terranom674	9da08b5d8e	0.9.7.17: fehlende Connector-Bilder nach erfolgreichem Abruf bereinigen	2026-08-19 23:26:37 +02:00
Terranom674	f28365b0ca	Merge pull request #38 from Terranom674/fix/09716-native-piwigo-source 0.9.7.16: WebDAV-Bilder wieder über Piwigos nativen Derivatpfad laden	2026-08-19 23:07:42 +02:00
Terranom674	fb6c1a03d2	0.9.7.16: vorhandene Preview-Caches ohne Massendownload weiterverwenden	2026-08-19 23:06:11 +02:00
Terranom674	98d0471683	0.9.7.16: WebDAV-Bildendpoint wieder auf Originalauslieferung begrenzen	2026-08-19 23:05:14 +02:00
Terranom674	63eba888f8	0.9.7.16: native Piwigo-Derivatlogik wiederherstellen	2026-08-19 23:04:51 +02:00
Terranom674	748b0e986d	0.9.7.16: widersprüchlichen WebDAV-Derivat-Hook entfernen	2026-08-19 23:04:34 +02:00
Terranom674	c1281ad077	0.9.7.16: eigenen WebDAV-Derivat-Endpunkt entfernen	2026-08-19 23:04:26 +02:00
Terranom674	bc0593642c	0.9.7.16: echte NC-Previews als lokale Piwigo-Quelle verwenden	2026-08-19 23:04:06 +02:00
Terranom674	9052076fd7	Merge pull request #37 from Terranom674/fix/09715-piwigo-ajax-loader 0.9.7.15: Piwigo-AJAX-Lader für WebDAV-Bilder reparieren	2026-08-19 22:59:33 +02:00
Terranom674	5772a59b55	Bump version to 0.9.7.15	2026-08-19 22:58:34 +02:00
Terranom674	84762154d6	Return JSON for Piwigo AJAX image loader	2026-08-19 22:58:17 +02:00
Terranom674	1580c235a8	Fix Piwigo AJAX loader response for WebDAV derivatives	2026-08-19 22:57:56 +02:00
Terranom674	4aac5ca4a2	Merge pull request #36 from Terranom674/fix/09714-cache-permissions 0.9.7.14: WebDAV-Cache-Rechte reparieren	2026-08-19 22:48:56 +02:00
Terranom674	ab1f20beef	0.9.7.14: Einmalige Cache-Rechtereparatur	2026-08-19 22:48:00 +02:00
Terranom674	f94a001006	Version 0.9.7.14	2026-08-19 22:47:45 +02:00
Terranom674	3f64895f8e	0.9.7.14: Connector-Cache-Rechte normalisieren	2026-08-19 22:47:20 +02:00
Terranom674	48f1eacce7	Merge pull request #35 from Terranom674/fix/09713-watermark-album-overview 0.9.7.13: Wasserzeichen in Albumübersicht nach Albumregel	2026-08-19 22:43:07 +02:00
Terranom674	7c8c7ab98a	Purge stale watermark cache once on 0.9.7.13	2026-08-19 22:42:24 +02:00
Terranom674	ade38ff2d1	Clear watermark cache after profile changes	2026-08-19 22:42:01 +02:00
Terranom674	6a013fe875	Clear watermark cache after album rule changes	2026-08-19 22:41:36 +02:00
Terranom674	c71112d94e	Invalidate watermark cache on rule changes	2026-08-19 22:41:20 +02:00
Terranom674	7d97e1b515	Register album overview watermark context	2026-08-19 22:39:08 +02:00
Terranom674	47afbc7f43	Fix watermark context for album overview covers	2026-08-19 22:38:54 +02:00
Terranom674	706639a57e	Merge pull request #34 from Terranom674/fix/09712-ondemand-missing-preview 0.9.7.12: On-Demand-Altbilder nicht mehr auf 404 hängen lassen	2026-08-19 22:36:50 +02:00
Terranom674	c7b14add33	0.9.7.12: Version anheben	2026-08-19 22:35:53 +02:00
Terranom674	f9e87df305	0.9.7.12: fehlende On-Demand-Previews auf echtes WebDAV-Bild zurueckfallen	2026-08-19 22:35:25 +02:00
Terranom674	6ba5eb4d7f	Merge pull request #33 from Terranom674/fix/09711-fotorama-ondemand 0.9.7.11: Fotorama-Derivate on demand erzeugen	2026-08-19 22:32:15 +02:00