ignore stale branch marker

noop
2026-09-19 17:34:31 +00:00 · 2026-08-19 14:59:22 +02:00 · 2026-08-19 14:59:03 +02:00
39 changed files with 1951 additions and 2121 deletions
--- a/.ci-trigger-0977
+++ b/.ci-trigger-0977
@@ -1 +0,0 @@
-0.9.7.7
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -5,12 +5,8 @@ on:
  pull_request:

 jobs:
-  php-syntax:
+  syntax:
    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        php-version: ['8.2', '8.3', '8.4', '8.5']
    steps:
      - name: Repository auschecken
        uses: actions/checkout@v4
@@ -18,7 +14,7 @@ jobs:
      - name: PHP installieren
        uses: shivammathur/setup-php@v2
        with:
-          php-version: ${{ matrix.php-version }}
+          php-version: '8.2'
          coverage: none

      - name: PHP Syntax pruefen
@@ -40,12 +36,6 @@ jobs:
            exit 1
          fi

-  script-syntax:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Repository auschecken
-        uses: actions/checkout@v4
-
      - name: Admin JavaScript Syntax pruefen
        shell: bash
        run: |
--- a/admin.php
+++ b/admin.php
@@ -9,74 +9,6 @@ check_status(ACCESS_ADMINISTRATOR);
 require_once(BRATONIEN_TOOLS_PATH . 'include/tool_registry.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_system.inc.php');

-function bratonien_tools_nc_connector_admin_connections(array $connections)
-{
-  $by_id = array();
-  foreach ($connections as $connection)
-  {
-    $by_id[(int)$connection['id']] = $connection;
-  }
-
-  $hidden_legacy_ids = array();
-  $logical_remote = array();
-  foreach ($connections as $connection)
-  {
-    if ((string)($connection['adapter'] ?? '') !== 'remote') continue;
-    $migration = isset($connection['config']['migration']) && is_array($connection['config']['migration'])
-      ? $connection['config']['migration']
-      : array();
-    if ((string)($migration['role'] ?? '') !== 'webdav-primary-candidate') continue;
-
-    $legacy_id = (int)($migration['legacy_fallback_connection_id'] ?? 0);
-    if ($legacy_id < 1 || empty($by_id[$legacy_id]) || (string)$by_id[$legacy_id]['adapter'] !== 'local') continue;
-
-    $legacy = $by_id[$legacy_id];
-    $hidden_legacy_ids[$legacy_id] = true;
-    $connection['logical_connection'] = true;
-    $connection['legacy_fallback_connection_id'] = $legacy_id;
-    $connection['enabled'] = !empty($connection['enabled']) || !empty($legacy['enabled']);
-    if ($connection['enabled']) $connection['takeover_state'] = 'active';
-    $connection['fallback_stored'] = !empty($connection['fallback_stored']) || !empty($legacy['fallback_stored']);
-    if (trim((string)$connection['name']) === '') $connection['name'] = (string)$legacy['name'];
-    $logical_remote[(int)$connection['id']] = $connection;
-  }
-
-  $visible = array();
-  foreach ($connections as $connection)
-  {
-    $id = (int)$connection['id'];
-    if (isset($hidden_legacy_ids[$id])) continue;
-    if (isset($logical_remote[$id])) $connection = $logical_remote[$id];
-    $visible[] = $connection;
-  }
-
-  return $visible;
-}
-
-function bratonien_tools_nc_connector_admin_last_status(array $connection)
-{
-  $latest = bratonien_tools_nc_connector_connection_last_status($connection);
-  $legacy_id = (int)($connection['legacy_fallback_connection_id'] ?? 0);
-  if ($legacy_id < 1)
-  {
-    return $latest;
-  }
-
-  $legacy = bratonien_tools_nc_connector_connection($legacy_id, false);
-  if (!$legacy)
-  {
-    return $latest;
-  }
-
-  $legacy_status = bratonien_tools_nc_connector_connection_last_status($legacy);
-  if ((int)($legacy_status['timestamp'] ?? 0) > (int)($latest['timestamp'] ?? 0))
-  {
-    return $legacy_status;
-  }
-
-  return $latest;
-}
-
 $tools = bratonien_tools_get_tools();
 $messages = array();
 $errors = array();
@@ -162,19 +94,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['bratonien_tool']))
  );

  $redirect_url = get_root_url().'admin.php?page=plugin-'.BRATONIEN_TOOLS_ID;
-  $wizard_action = strpos($tool_id, 'nc_connector_wizard_') === 0
-    || $tool_id === 'nc_connector_migrate_start'
-    || $tool_id === 'nc_connector_edit_start';
-  if ($wizard_action)
-  {
-    $wizard_closed = $tool_id === 'nc_connector_wizard_reset'
-      || ($tool_id === 'nc_connector_wizard_finish' && empty($errors));
-    if (($tool_id === 'nc_connector_migrate_start' || $tool_id === 'nc_connector_edit_start') && !empty($errors))
-    {
-      $wizard_closed = true;
-    }
-    $redirect_url .= '&nc_wizard='.($wizard_closed ? 'closed' : 'open');
-  }
  if (!headers_sent())
  {
    header('Location: '.$redirect_url, true, 303);
@@ -196,17 +115,9 @@ $asset_environment = bratonien_tools_get_asset_environment();
 $album_shares = bratonien_tools_get_album_shares();
 $private_albums = bratonien_tools_get_private_albums();
 $nc_connector = bratonien_tools_nc_connector_status();
-$nc_connector_runtime_connections = $nc_connector['connections'];
-$nc_connector['connections'] = bratonien_tools_nc_connector_admin_connections($nc_connector_runtime_connections);
-$nc_connector['connection_count'] = count($nc_connector['connections']);
-$nc_connector['active_count'] = 0;
-foreach ($nc_connector['connections'] as $visible_connection)
-{
-  if (!empty($visible_connection['enabled'])) $nc_connector['active_count']++;
-}
 foreach ($nc_connector['connections'] as &$nc_connection)
 {
-  $nc_connection['last_sync'] = bratonien_tools_nc_connector_admin_last_status($nc_connection);
+  $nc_connection['last_sync'] = bratonien_tools_nc_connector_connection_last_status($nc_connection);
  $nc_connection['display_name'] = $nc_connection['name'];

  $storage_lines = array();
@@ -255,7 +166,7 @@ $nc_system_defaults = array(
 );
 $nc_connector['system'] = array_merge(
  $nc_system_defaults,
-  bratonien_tools_nc_connector_system_status($nc_connector_runtime_connections)
+  bratonien_tools_nc_connector_system_status($nc_connector['connections'])
 );
 $album_lock_page_number = isset($_GET['br_album_page']) ? max(1, (int)$_GET['br_album_page']) : 1;
 $album_lock_search = isset($_GET['br_album_search']) ? trim((string)$_GET['br_album_search']) : '';
@@ -381,4 +292,4 @@ $admin_content .= $template->parse('asset_manager_admin_content', true);
 $admin_content .= $template->parse('album_shares_admin_content', true);
 $admin_content .= $template->parse('nc_connector_admin_content', true);
 $admin_content .= $template->parse('system_admin_content', true);
-$template->assign('ADMIN_CONTENT', $admin_content);
+$template->assign('ADMIN_CONTENT', $admin_content);
--- a/include/nc_connector_delete_safe.inc.php
+++ b/include/nc_connector_delete_safe.inc.php
@@ -4,84 +4,49 @@ if (!defined('PHPWG_ROOT_PATH'))
  die('Hacking attempt!');
 }

-function bratonien_tools_nc_connector_db_prefix_from_absolute($path)
+function bratonien_tools_nc_connector_webdav_site_id(array $connection)
 {
-  $path = rtrim(str_replace('\\', '/', (string)$path), '/');
-  $piwigo_root = rtrim(str_replace('\\', '/', PHPWG_ROOT_PATH), '/');
-  if ($path === '' || strpos($path, $piwigo_root.'/') !== 0) return '';
-
-  $relative = ltrim(substr($path, strlen($piwigo_root)), '/');
-  return $relative === '' ? '' : './'.rtrim($relative, '/').'/';
-}
-
-function bratonien_tools_nc_connector_owned_db_prefixes(array $connection)
-{
-  $id = (int)($connection['id'] ?? 0);
-  if ($id < 1) return array();
-
-  $prefixes = array(
-    './_data/bratonien-tools/nc-webdav-gallery/connection-'.$id.'/',
-    './_data/bratonien-tools/nc-webdav-source/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 !== '') $prefixes[] = $configured;
+  if ((string)($connection['adapter'] ?? '') !== 'remote') return 0;
+  if ((string)($config['source_mode'] ?? '') !== 'webdav-placeholder') return 0;

-  return array_values(array_unique($prefixes));
-}
+  $gallery_root = rtrim((string)($config['parallel_gallery_root'] ?? ''), '/');
+  $piwigo_root = rtrim(PHPWG_ROOT_PATH, '/');
+  if ($gallery_root === '' || strpos($gallery_root, $piwigo_root.'/') !== 0) return 0;

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

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

-  $config = isset($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));
+  $row = pwg_db_fetch_assoc($result);
+  return (int)$row['id'];
 }

 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();
-  $result = pwg_query(
-    'SELECT id, path, representative_ext FROM '.IMAGES_TABLE.
-    ' WHERE '.implode(' OR ', $where)
-  );
+  $query = '
+SELECT DISTINCT i.id, i.path, i.representative_ext
+  FROM '.IMAGES_TABLE.' AS i
+  LEFT JOIN '.CATEGORIES_TABLE.' AS sc ON sc.id = i.storage_category_id
+  LEFT JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON ic.image_id = i.id
+  LEFT JOIN '.CATEGORIES_TABLE.' AS vc ON vc.id = ic.category_id
+  WHERE sc.site_id = '.$site_id.' OR vc.site_id = '.$site_id.'
+;';
+  $result = pwg_query($query);
  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;
  }
@@ -98,33 +63,31 @@ function bratonien_tools_nc_connector_remove_webdav_piwigo_content(array $connec
    }
  }

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

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

 /**
- * Delete exactly the connection selected by the user.
- * No other connector record is implicitly removed.
+ * Delete a connector connection from Piwigo without depending on the web
+ * server being allowed to write into root-owned runtime directories.
+ * WebDAV-managed Piwigo records are removed before the connection itself so
+ * deleted remote content cannot remain visible or addressable in Piwigo.
 */
 function bratonien_tools_nc_connector_delete_safe()
 {
@@ -135,7 +98,7 @@ function bratonien_tools_nc_connector_delete_safe()
    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
  }

-  $cleanup = array('sites'=>0, 'images'=>0);
+  $cleanup = array('site_id'=>0, 'images'=>0);
  if (
    (string)($connection['adapter'] ?? '') === 'remote'
    && (string)($connection['config']['source_mode'] ?? '') === 'webdav-placeholder'
@@ -149,14 +112,24 @@ function bratonien_tools_nc_connector_delete_safe()

  $status_dir = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status';
  $public_status = $status_dir.'/connection-'.$id.'.json';
-  if (is_file($public_status)) @unlink($public_status);
+  if (is_file($public_status))
+  {
+    @unlink($public_status);
+  }

  if (is_dir($status_dir) || @mkdir($status_dir, 0755, true))
  {
    @file_put_contents($status_dir.'/deleted-'.$id, date('c')."\n", LOCK_EX);
  }

+  if ((int)$cleanup['site_id'] > 0)
+  {
+    return array(
+      'message'=>'Connector-Verbindung wurde gelöscht. Die zugehörigen Piwigo-Alben und '.(int)$cleanup['images'].' Bilder wurden aus Piwigo entfernt. Nextcloud-Dateien blieben unverändert. Laufzeit- und Vorschaudaten werden automatisch bereinigt.',
+    );
+  }
+
  return array(
-    'message'=>'Verbindung wurde gelöscht. '.(int)$cleanup['images'].' eindeutig zu dieser Verbindung gehörende Bilder wurden aus Piwigo entfernt. Nextcloud-Dateien blieben unverändert.',
+    'message'=>'Connector-Verbindung wurde gelöscht. Verbliebene Laufzeitdateien werden vor dem nächsten Connector-Lauf automatisch entfernt. Quelldateien blieben unverändert.',
  );
 }
--- a/include/nc_connector_edit.inc.php
+++ b/include/nc_connector_edit.inc.php
@@ -13,22 +13,12 @@ function bratonien_tools_nc_connector_migration_state(array $connection)
  if (trim((string)($config['nextcloud_url'] ?? '')) === '') $missing[] = 'Nextcloud-Adresse';
  if (trim((string)($credentials['nextcloud_user'] ?? '')) === '') $missing[] = 'Nextcloud-Benutzer';
  if ((string)($credentials['nextcloud_password'] ?? '') === '') $missing[] = 'Nextcloud-Passwort';
-
-  $api_id = trim((string)($credentials['api_key_id'] ?? ''));
-  $api_secret = trim((string)($credentials['api_key_secret'] ?? ''));
-  $fallback_user = trim((string)($credentials['piwigo_user'] ?? ''));
-  $fallback_password = (string)($credentials['piwigo_password'] ?? '');
-  $api_complete = $api_id !== '' && $api_secret !== '';
-  $fallback_complete = $fallback_user !== '' && $fallback_password !== '';
-
-  if (($api_id === '') !== ($api_secret === '')) $missing[] = 'vollstaendiger Piwigo-API-Zugang';
-  if (!$api_complete && !$fallback_complete) $missing[] = 'Piwigo-API oder Benutzer/Passwort-Fallback';
+  if (trim((string)($credentials['api_key_id'] ?? '')) === '') $missing[] = 'Piwigo-API-Schluessel-ID';
+  if (trim((string)($credentials['api_key_secret'] ?? '')) === '') $missing[] = 'Piwigo-API-Geheimnis';

  return array(
    'ready'=>!$missing,
    'missing'=>$missing,
-    'api_available'=>$api_complete,
-    'fallback_available'=>$fallback_complete,
  );
 }

@@ -122,7 +112,7 @@ function bratonien_tools_nc_connector_prepare_webdav_wizard_from_connection(arra
  {
    $path = trim((string)($root['webdav_path'] ?? ''), '/');
    $fileid = (int)($root['fileid'] ?? 0);
-    if ($fileid < 1) continue;
+    if ($path === '' || $fileid < 1) continue;
    $selected[] = $path;
    $selected_ids[$path] = $fileid;
  }
--- a/include/nc_connector_scheduler.inc.php
+++ b/include/nc_connector_scheduler.inc.php
@@ -1,210 +0,0 @@
-<?php
-if (!defined('PHPWG_ROOT_PATH'))
-{
-  die('Hacking attempt!');
-}
-
-function bratonien_tools_nc_scheduler_paths()
-{
-  $base = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools';
-  return array(
-    'base'=>$base,
-    'runtime'=>$base.'/nc-connector-runtime',
-    'state_root'=>$base.'/nc-connector-state',
-    'scheduler'=>$base.'/nc-connector-scheduler',
-    'state'=>$base.'/nc-connector-scheduler/state.json',
-    'trigger_lock'=>$base.'/nc-connector-scheduler/trigger.lock',
-    'worker_lock'=>$base.'/nc-connector-scheduler/worker.lock',
-    'log'=>$base.'/nc-connector-scheduler/last-worker.log',
-    'status_root'=>$base.'/nc-connector-status',
-  );
-}
-
-function bratonien_tools_nc_scheduler_interval()
-{
-  global $conf;
-  $interval = isset($conf['bratonien_nc_scheduler_interval']) ? (int)$conf['bratonien_nc_scheduler_interval'] : 60;
-  return max(60, $interval);
-}
-
-function bratonien_tools_nc_scheduler_ensure_dirs()
-{
-  foreach (bratonien_tools_nc_scheduler_paths() as $key=>$path)
-  {
-    if (in_array($key, array('state','trigger_lock','worker_lock','log'), true)) continue;
-    if (!is_dir($path) && !@mkdir($path, 0750, true) && !is_dir($path))
-    {
-      return false;
-    }
-  }
-  return true;
-}
-
-function bratonien_tools_nc_scheduler_read_state()
-{
-  $paths = bratonien_tools_nc_scheduler_paths();
-  if (!is_readable($paths['state'])) return array();
-  $decoded = json_decode((string)@file_get_contents($paths['state']), true);
-  return is_array($decoded) ? $decoded : array();
-}
-
-function bratonien_tools_nc_scheduler_write_state(array $state)
-{
-  $paths = bratonien_tools_nc_scheduler_paths();
-  if (!bratonien_tools_nc_scheduler_ensure_dirs()) return false;
-  $json = json_encode($state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
-  if (!is_string($json)) return false;
-  $tmp = $paths['state'].'.tmp';
-  if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false) return false;
-  @chmod($tmp, 0640);
-  return @rename($tmp, $paths['state']);
-}
-
-function bratonien_tools_nc_scheduler_write_connection_status($connection_id, $state, $message)
-{
-  $connection_id = (int)$connection_id;
-  if ($connection_id < 1) return false;
-  $paths = bratonien_tools_nc_scheduler_paths();
-  if (!bratonien_tools_nc_scheduler_ensure_dirs()) return false;
-  $target = $paths['status_root'].'/connection-'.$connection_id.'.json';
-  $existing = array();
-  if (is_readable($target))
-  {
-    $decoded = json_decode((string)@file_get_contents($target), true);
-    if (is_array($decoded)) $existing = $decoded;
-  }
-  $existing['state'] = (string)$state;
-  $existing['message'] = (string)$message;
-  $existing['timestamp'] = time();
-  $existing['connection_id'] = $connection_id;
-  $json = json_encode($existing, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
-  if (!is_string($json)) return false;
-  $tmp = $target.'.tmp';
-  if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false) return false;
-  @chmod($tmp, 0644);
-  return @rename($tmp, $target);
-}
-
-function bratonien_tools_nc_scheduler_install()
-{
-  if (!bratonien_tools_nc_scheduler_ensure_dirs()) return false;
-  $state = bratonien_tools_nc_scheduler_read_state();
-  if (empty($state['next_due']))
-  {
-    $state['next_due'] = time();
-    $state['enabled'] = true;
-    $state['mode'] = 'piwigo-native';
-    bratonien_tools_nc_scheduler_write_state($state);
-  }
-  return true;
-}
-
-function bratonien_tools_nc_scheduler_php_binary()
-{
-  foreach (array('/usr/bin/php', '/usr/local/bin/php', PHP_BINARY) as $candidate)
-  {
-    if (is_string($candidate) && $candidate !== '' && is_executable($candidate)) return $candidate;
-  }
-  return '';
-}
-
-function bratonien_tools_nc_scheduler_spawn($force = false, $connection_id = 0)
-{
-  $connection_id = max(0, (int)$connection_id);
-  $paths = bratonien_tools_nc_scheduler_paths();
-  if (!bratonien_tools_nc_scheduler_ensure_dirs())
-  {
-    throw new RuntimeException('Der native NC-Scheduler kann sein Laufzeitverzeichnis nicht anlegen.');
-  }
-
-  $lock = @fopen($paths['trigger_lock'], 'c+');
-  if (!is_resource($lock) || !@flock($lock, LOCK_EX | LOCK_NB))
-  {
-    if (is_resource($lock)) fclose($lock);
-    return array('started'=>false, 'message'=>'Ein NC-Abgleich wird bereits vorbereitet.');
-  }
-
-  $state = bratonien_tools_nc_scheduler_read_state();
-  $now = time();
-  $next_due = (int)($state['next_due'] ?? 0);
-  if (!$force && $next_due > $now)
-  {
-    @flock($lock, LOCK_UN);
-    fclose($lock);
-    return array('started'=>false, 'message'=>'Der nächste NC-Abgleich ist noch nicht fällig.');
-  }
-
-  $php = bratonien_tools_nc_scheduler_php_binary();
-  if ($php === '')
-  {
-    @flock($lock, LOCK_UN);
-    fclose($lock);
-    throw new RuntimeException('Kein ausführbares PHP-CLI für den nativen NC-Scheduler gefunden.');
-  }
-
-  $state['enabled'] = true;
-  $state['mode'] = 'piwigo-native';
-  $state['state'] = 'queued';
-  $state['message'] = $connection_id > 0 ? 'NC-Abgleich für Verbindung #'.$connection_id.' wurde angefordert.' : 'NC-Abgleich für alle Verbindungen wurde angefordert.';
-  $state['queued_at'] = $now;
-  $state['timestamp'] = $now;
-  $state['connection_id'] = $connection_id;
-  $state['next_due'] = $now + bratonien_tools_nc_scheduler_interval();
-  bratonien_tools_nc_scheduler_write_state($state);
-  if ($connection_id > 0)
-  {
-    bratonien_tools_nc_scheduler_write_connection_status($connection_id, 'queued', 'Abgleich wurde angefordert.');
-  }
-
-  $runner = BRATONIEN_TOOLS_PATH.'runtime/native-runner.php';
-  $runner_args = $connection_id > 0 ? ' --connection-id='.escapeshellarg((string)$connection_id) : '';
-  $command = escapeshellarg($php).' '.escapeshellarg($runner).$runner_args.' >> '.escapeshellarg($paths['log']).' 2>&1 &';
-  $spec = array(
-    0=>array('file','/dev/null','r'),
-    1=>array('file','/dev/null','a'),
-    2=>array('file','/dev/null','a'),
-  );
-  $process = function_exists('proc_open') ? @proc_open(array('/bin/sh','-c',$command), $spec, $pipes) : false;
-  $exit = is_resource($process) ? proc_close($process) : 1;
-
-  @flock($lock, LOCK_UN);
-  fclose($lock);
-
-  if ($exit !== 0)
-  {
-    $state = bratonien_tools_nc_scheduler_read_state();
-    $state['state'] = 'error';
-    $state['message'] = 'Der native NC-Abgleich konnte nicht gestartet werden.';
-    $state['timestamp'] = time();
-    bratonien_tools_nc_scheduler_write_state($state);
-    if ($connection_id > 0)
-    {
-      bratonien_tools_nc_scheduler_write_connection_status($connection_id, 'error', 'Abgleich konnte nicht gestartet werden.');
-    }
-    throw new RuntimeException('Der native NC-Abgleich konnte nicht gestartet werden.');
-  }
-
-  return array('started'=>true, 'message'=>$connection_id > 0 ? 'Abgleich für Verbindung #'.$connection_id.' wurde angefordert.' : 'Abgleich für alle Verbindungen wurde angefordert.');
-}
-
-function bratonien_tools_nc_scheduler_tick()
-{
-  $state = bratonien_tools_nc_scheduler_read_state();
-  if (isset($state['enabled']) && !$state['enabled']) return;
-  $next_due = (int)($state['next_due'] ?? 0);
-  if ($next_due > time()) return;
-
-  try
-  {
-    bratonien_tools_nc_scheduler_spawn(false, 0);
-  }
-  catch (Throwable $e)
-  {
-    $state = bratonien_tools_nc_scheduler_read_state();
-    $state['state'] = 'error';
-    $state['message'] = $e->getMessage();
-    $state['timestamp'] = time();
-    $state['next_due'] = time() + bratonien_tools_nc_scheduler_interval();
-    bratonien_tools_nc_scheduler_write_state($state);
-  }
-}
--- a/include/nc_connector_system.inc.php
+++ b/include/nc_connector_system.inc.php
@@ -4,13 +4,109 @@ if (!defined('PHPWG_ROOT_PATH'))
  die('Hacking attempt!');
 }

-require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
+function bratonien_tools_nc_connector_systemctl_value(array $args)
+{
+  if (!function_exists('proc_open'))
+  {
+    return '';
+  }
+
+  $command = array_merge(array('/usr/bin/systemctl'), $args);
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $environment = array_merge($_ENV, array('LC_ALL'=>'C', 'LANG'=>'C'));
+  $process = @proc_open($command, $spec, $pipes, null, $environment);
+  if (!is_resource($process))
+  {
+    return '';
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  return $exit === 0 ? trim((string)$stdout) : '';
+}
+
+function bratonien_tools_nc_connector_parse_systemd_time($value)
+{
+  $value = trim((string)$value);
+  if ($value === '' || strtolower($value) === 'n/a')
+  {
+    return 0;
+  }
+  $parsed = strtotime($value);
+  return $parsed === false ? 0 : (int)$parsed;
+}
+
+function bratonien_tools_nc_connector_monotonic_to_timestamp($value)
+{
+  $value = trim((string)$value);
+  if ($value === '' || $value === '0' || strtolower($value) === 'n/a')
+  {
+    return 0;
+  }
+
+  if (preg_match('/^([0-9]+)(?:us)?$/', $value, $matches))
+  {
+    $next_boot_seconds = ((float)$matches[1]) / 1000000;
+  }
+  else
+  {
+    return 0;
+  }
+
+  $uptime_raw = @file_get_contents('/proc/uptime');
+  if (!is_string($uptime_raw) || !preg_match('/^([0-9]+(?:\.[0-9]+)?)/', trim($uptime_raw), $uptime_match))
+  {
+    return 0;
+  }
+
+  $remaining = $next_boot_seconds - (float)$uptime_match[1];
+  if ($remaining < -1)
+  {
+    return 0;
+  }
+
+  return (int)round(time() + max(0, $remaining));
+}
+
+function bratonien_tools_nc_connector_next_from_timer_list($timer)
+{
+  $line = bratonien_tools_nc_connector_systemctl_value(array(
+    'list-timers', '--all', '--no-pager', '--no-legend', $timer,
+  ));
+  if ($line === '')
+  {
+    return 0;
+  }
+
+  $first_line = trim((string)strtok($line, "\n"));
+  if (preg_match('/^(\S+\s+\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\s+\S+)/', $first_line, $matches))
+  {
+    $parsed = strtotime($matches[1]);
+    return $parsed === false ? 0 : (int)$parsed;
+  }
+
+  return 0;
+}

 function bratonien_tools_nc_connector_connection_last_status(array $connection)
 {
  $empty = array(
-    'timestamp'=>0,'label'=>'Nicht verfügbar','state'=>'','message'=>'','auth_mode'=>'',
-    'api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'',
+    'timestamp'=>0,
+    'label'=>'Nicht verfügbar',
+    'state'=>'',
+    'message'=>'',
+    'auth_mode'=>'',
+    'api_state'=>'',
+    'api_message'=>'',
+    'fallback_state'=>'',
+    'fallback_message'=>'',
+    'error_detail'=>'',
  );

  $connection_id = (int)($connection['id'] ?? 0);
@@ -18,25 +114,42 @@ function bratonien_tools_nc_connector_connection_last_status(array $connection)
  if ($connection_id > 0)
  {
    $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status/connection-'.$connection_id.'.json';
-    $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-state/connection-'.$connection_id.'/connector-status.json';
  }

  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
  $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
-  if ($state_dir !== '') $candidates[] = $state_dir.'/connector-status.json';
+  if ($state_dir === '' && $connection_id > 0)
+  {
+    $state_dir = '/var/lib/bratonien-tools/nc-connector/connection-'.$connection_id;
+  }
+  if ($state_dir !== '')
+  {
+    $candidates[] = $state_dir.'/connector-status.json';
+  }

  $decoded = null;
-  foreach (array_unique($candidates) as $candidate)
+  foreach ($candidates as $candidate)
  {
-    if (!is_readable($candidate)) continue;
+    if (!is_readable($candidate))
+    {
+      continue;
+    }
    $value = json_decode((string)@file_get_contents($candidate), true);
-    if (is_array($value)) { $decoded = $value; break; }
+    if (is_array($value))
+    {
+      $decoded = $value;
+      break;
+    }
+  }
+  if (!is_array($decoded))
+  {
+    return $empty;
  }
-  if (!is_array($decoded)) return $empty;

  $timestamp = (int)($decoded['timestamp'] ?? 0);
  $api = isset($decoded['api']) && is_array($decoded['api']) ? $decoded['api'] : array();
  $fallback = isset($decoded['fallback']) && is_array($decoded['fallback']) ? $decoded['fallback'] : array();
+
  return array(
    'timestamp'=>$timestamp,
    'label'=>$timestamp > 0 ? date('d.m.Y H:i:s', $timestamp) : 'Nicht verfügbar',
@@ -53,88 +166,73 @@ function bratonien_tools_nc_connector_connection_last_status(array $connection)

 function bratonien_tools_nc_connector_last_status(array $connections)
 {
-  $latest = array('timestamp'=>0,'state'=>'','message'=>'','auth_mode'=>'','api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'');
+  $latest = array('timestamp'=>0, 'state'=>'', 'message'=>'', 'auth_mode'=>'', 'api_state'=>'', 'api_message'=>'', 'fallback_state'=>'', 'fallback_message'=>'', 'error_detail'=>'');
+
  foreach ($connections as $connection)
  {
-    if (empty($connection['enabled'])) continue;
+    if (empty($connection['enabled']) || (string)($connection['takeover_state'] ?? '') !== 'active')
+    {
+      continue;
+    }
+
    $status = bratonien_tools_nc_connector_connection_last_status($connection);
-    if ((int)$status['timestamp'] >= (int)$latest['timestamp']) $latest = $status;
+    if ((int)$status['timestamp'] >= (int)$latest['timestamp'])
+    {
+      $latest = $status;
+    }
  }
+
  return $latest;
 }

 function bratonien_tools_nc_connector_system_status(array $connections = array())
 {
-  $scheduler = bratonien_tools_nc_scheduler_read_state();
-  $enabled = !isset($scheduler['enabled']) || !empty($scheduler['enabled']);
-  $scheduler_state = (string)($scheduler['state'] ?? '');
-  $running = $scheduler_state === 'running';
-  $queued = $scheduler_state === 'queued';
-  $started = (int)($scheduler['started_at'] ?? 0);
-  $next = (int)($scheduler['next_due'] ?? 0);
+  $timer = 'bratonien-nc-connector.timer';
+  $service = 'bratonien-nc-connector.service';
+
+  $next_realtime_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecRealtime', '--value'));
+  $next_timestamp = bratonien_tools_nc_connector_parse_systemd_time($next_realtime_raw);
+
+  if ($next_timestamp <= 0)
+  {
+    $next_monotonic_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecMonotonic', '--value'));
+    $next_timestamp = bratonien_tools_nc_connector_monotonic_to_timestamp($next_monotonic_raw);
+  }
+
+  if ($next_timestamp <= 0)
+  {
+    $next_timestamp = bratonien_tools_nc_connector_next_from_timer_list($timer);
+  }
+
+  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active', $timer));
+  $enabled = bratonien_tools_nc_connector_systemctl_value(array('is-enabled', $timer));
+
  $last = bratonien_tools_nc_connector_last_status($connections);
-
-  if ($next > 0)
+  if ($last['timestamp'] <= 0)
  {
-    $next_label = date('d.m.Y H:i:s', $next).' (beim nächsten Piwigo-Aufruf)';
+    $last_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $service, '--property=ExecMainExitTimestamp', '--value'));
+    $last['timestamp'] = bratonien_tools_nc_connector_parse_systemd_time($last_raw);
  }
-  else
-  {
-    $next_label = 'Beim nächsten Piwigo-Aufruf';
-  }
-
-  $scheduler_timestamp = (int)($scheduler['timestamp'] ?? 0);
-  if ($scheduler_timestamp > (int)$last['timestamp'])
-  {
-    $last['timestamp'] = $scheduler_timestamp;
-    $last['state'] = $scheduler_state;
-    $last['message'] = (string)($scheduler['message'] ?? '');
-    if ($scheduler_state === 'error')
-    {
-      $detail = trim((string)($scheduler['stderr'] ?? ''));
-      if ($detail === '') $detail = trim((string)($scheduler['stdout'] ?? ''));
-      $last['error_detail'] = $detail;
-    }
-  }
-  elseif ((int)$last['timestamp'] <= 0 && !empty($scheduler['finished_at']))
-  {
-    $last['timestamp'] = (int)$scheduler['finished_at'];
-    $last['state'] = $scheduler_state;
-    $last['message'] = (string)($scheduler['message'] ?? '');
-    if ((string)$last['state'] === 'error')
-    {
-      $detail = trim((string)($scheduler['stderr'] ?? ''));
-      if ($detail === '') $detail = trim((string)($scheduler['stdout'] ?? ''));
-      $last['error_detail'] = $detail;
-    }
-  }
-
-  $current_label = 'Kein Lauf aktiv';
-  if ($queued) $current_label = 'Abgleich angefordert';
-  if ($running) $current_label = $started > 0 ? 'Läuft seit '.date('d.m.Y H:i:s', $started) : 'Läuft gerade';

  return array(
-    'timer_name'=>'Piwigo nativer NC-Scheduler',
-    'timer_active'=>$enabled,
-    'timer_enabled'=>$enabled,
-    'service_active'=>$running || $queued,
-    'current_run_timestamp'=>$queued ? (int)($scheduler['queued_at'] ?? 0) : $started,
-    'current_run_label'=>$current_label,
-    'last_run_timestamp'=>(int)$last['timestamp'],
-    'last_run_label'=>(int)$last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
-    'last_run_state'=>(string)$last['state'],
-    'last_run_message'=>(string)$last['message'],
-    'last_run_auth_mode'=>(string)$last['auth_mode'],
-    'last_run_api_state'=>(string)$last['api_state'],
-    'last_run_api_message'=>(string)$last['api_message'],
-    'last_run_fallback_state'=>(string)$last['fallback_state'],
-    'last_run_fallback_message'=>(string)$last['fallback_message'],
-    'last_run_error_detail'=>(string)$last['error_detail'],
-    'next_run_timestamp'=>$next,
-    'next_run_label'=>$next_label,
-    'legacy_runtime_exists'=>is_dir('/opt/piwigo-sync'),
-    'legacy_config_exists'=>is_dir('/etc/piwigo-sync'),
-    'legacy_service_exists'=>is_file('/etc/systemd/system/piwigo-sync.service'),
-    'legacy_timer_exists'=>is_file('/etc/systemd/system/piwigo-sync.timer'),
+    'timer_name' => $timer,
+    'timer_active' => $active === 'active',
+    'timer_enabled' => $enabled === 'enabled',
+    'last_run_timestamp' => (int)$last['timestamp'],
+    'last_run_label' => $last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
+    'last_run_state' => (string)$last['state'],
+    'last_run_message' => (string)$last['message'],
+    'last_run_auth_mode' => (string)$last['auth_mode'],
+    'last_run_api_state' => (string)$last['api_state'],
+    'last_run_api_message' => (string)$last['api_message'],
+    'last_run_fallback_state' => (string)$last['fallback_state'],
+    'last_run_fallback_message' => (string)$last['fallback_message'],
+    'last_run_error_detail' => (string)$last['error_detail'],
+    'next_run_timestamp' => $next_timestamp,
+    'next_run_label' => $next_timestamp > 0 ? date('d.m.Y H:i:s', $next_timestamp) : 'Nicht verfügbar',
+    'legacy_runtime_exists' => is_dir('/opt/piwigo-sync'),
+    'legacy_config_exists' => is_dir('/etc/piwigo-sync'),
+    'legacy_service_exists' => is_file('/etc/systemd/system/piwigo-sync.service'),
+    'legacy_timer_exists' => is_file('/etc/systemd/system/piwigo-sync.timer'),
  );
 }
--- a/include/nc_connector_takeover.inc.php
+++ b/include/nc_connector_takeover.inc.php
@@ -0,0 +1,135 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+/**
+ * Controlled handover preparation for verified NC Connector connections.
+ *
+ * This phase intentionally does not stop, disable or modify the legacy
+ * piwigo-sync service. It only marks a verified Connector connection as ready
+ * for a later controlled takeover. The marker can be rolled back at any time.
+ */
+
+function bratonien_tools_nc_connector_ensure_takeover_state()
+{
+  bratonien_tools_nc_connector_ensure_table();
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("ALTER TABLE `$table` MODIFY takeover_state enum('imported','verified','ready','active','disabled') NOT NULL DEFAULT 'imported'");
+}
+
+function bratonien_tools_nc_connector_prepare_takeover()
+{
+  $id = isset($_POST['connection_id']) ? (int)$_POST['connection_id'] : 0;
+  $connection = bratonien_tools_nc_connector_connection($id, false);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+  if ($connection['takeover_state'] !== 'verified')
+  {
+    throw new RuntimeException('Nur eine erfolgreich verifizierte Verbindung kann fuer die Uebergabe vorbereitet werden.');
+  }
+
+  $config = $connection['config'];
+  $verification = isset($config['verification']) && is_array($config['verification'])
+    ? $config['verification']
+    : array();
+  if (empty($verification['ok']))
+  {
+    throw new RuntimeException('Die gespeicherte Verifikation ist nicht erfolgreich. Bitte die Verbindung erneut pruefen.');
+  }
+
+  $config['takeover'] = array(
+    'prepared_at' => date('Y-m-d H:i:s'),
+    'legacy_sync_untouched' => true,
+    'connector_enabled' => false,
+    'first_run' => array(
+      'status' => 'pending',
+      'finished_at' => null,
+      'detail' => '',
+    ),
+  );
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json))
+  {
+    throw new RuntimeException('Uebergabestatus konnte nicht gespeichert werden.');
+  }
+
+  bratonien_tools_nc_connector_ensure_takeover_state();
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET
+    takeover_state = 'ready',
+    enabled = 0,
+    config_json = '".pwg_db_real_escape_string($config_json)."',
+    updated = '".pwg_db_real_escape_string($now)."'
+    WHERE id = ".(int)$connection['id']);
+
+  return array(
+    'message' => 'Die verifizierte Nextcloud-Verbindung ist jetzt fuer die kontrollierte Uebergabe vorbereitet. Der Connector wurde noch nicht aktiviert und der Legacy-Sync bleibt unveraendert Produktionsverbindung.',
+  );
+}
+
+function bratonien_tools_nc_connector_cancel_takeover()
+{
+  $id = isset($_POST['connection_id']) ? (int)$_POST['connection_id'] : 0;
+  $connection = bratonien_tools_nc_connector_connection($id, false);
+  if (!$connection)
+  {
+    throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
+  }
+  if ($connection['takeover_state'] !== 'ready')
+  {
+    throw new RuntimeException('Diese Verbindung befindet sich nicht in der Uebergabevorbereitung.');
+  }
+
+  $config = $connection['config'];
+  if (isset($config['takeover']))
+  {
+    unset($config['takeover']);
+  }
+  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($config_json))
+  {
+    throw new RuntimeException('Uebergabestatus konnte nicht zurueckgesetzt werden.');
+  }
+
+  bratonien_tools_nc_connector_ensure_takeover_state();
+  $table = bratonien_tools_nc_connector_table();
+  $now = date('Y-m-d H:i:s');
+  pwg_query("UPDATE `$table` SET
+    takeover_state = 'verified',
+    enabled = 0,
+    config_json = '".pwg_db_real_escape_string($config_json)."',
+    updated = '".pwg_db_real_escape_string($now)."'
+    WHERE id = ".(int)$connection['id']);
+
+  return array(
+    'message' => 'Die Uebergabevorbereitung wurde zurueckgenommen. Die Verbindung bleibt verifiziert und deaktiviert; der Legacy-Sync bleibt unveraendert aktiv.',
+  );
+}
+
+/**
+ * Normalize the outcome of a Connector sync run during takeover.
+ *
+ * Both "changed" and "no_changes" are successful results. Only "error"
+ * represents a failed run and may trigger rollback of a controlled handover.
+ */
+function bratonien_tools_nc_connector_takeover_result($status, $detail = '')
+{
+  $status = trim((string)$status);
+  if (!in_array($status, array('changed', 'no_changes', 'error'), true))
+  {
+    throw new RuntimeException('Unbekannter Connector-Laufstatus: '.$status);
+  }
+
+  return array(
+    'status' => $status,
+    'success' => $status !== 'error',
+    'changed' => $status === 'changed',
+    'finished_at' => date('Y-m-d H:i:s'),
+    'detail' => (string)$detail,
+  );
+}
--- a/include/nc_connector_webdav.inc.php
+++ b/include/nc_connector_webdav.inc.php
@@ -5,8 +5,81 @@ if (!defined('PHPWG_ROOT_PATH'))
 }

 /**
- * Create or update one independent WebDAV connector connection.
- * No migration pair, successor or implicit legacy fallback is created.
+ * Return the only existing local connector as migration fallback.
+ */
+function bratonien_tools_nc_connector_single_local_fallback()
+{
+  bratonien_tools_nc_connector_ensure_table();
+  $table = bratonien_tools_nc_connector_table();
+  $result = pwg_query("SELECT id, enabled, takeover_state, config_json FROM `$table` WHERE adapter='local' ORDER BY id");
+  $rows = array();
+
+  while ($row = pwg_db_fetch_assoc($result))
+  {
+    $rows[] = $row;
+    if (count($rows) > 1) return null;
+  }
+
+  if (count($rows) !== 1) return null;
+
+  $row = $rows[0];
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config)) $config = array();
+
+  return array(
+    'id'=>(int)$row['id'],
+    'enabled'=>(bool)$row['enabled'],
+    'takeover_state'=>(string)$row['takeover_state'],
+    'config'=>$config,
+  );
+}
+
+/**
+ * Link a WebDAV connection with the single existing local fallback.
+ */
+function bratonien_tools_nc_connector_pair_migration_fallback($webdav_id, array &$webdav_config, $now)
+{
+  $legacy = bratonien_tools_nc_connector_single_local_fallback();
+  if (!$legacy) return null;
+
+  $legacy_id = (int)$legacy['id'];
+  if ($legacy_id < 1 || $legacy_id === (int)$webdav_id) return null;
+
+  $webdav_config['migration'] = array(
+    'role'=>'webdav-primary-candidate',
+    'legacy_fallback_connection_id'=>$legacy_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+
+  $legacy_config = $legacy['config'];
+  $legacy_config['migration'] = array(
+    'role'=>'legacy-fallback',
+    'webdav_successor_connection_id'=>(int)$webdav_id,
+    'fallback_policy'=>'keep-running',
+    'paired_at'=>(string)$now,
+    'cutover_state'=>'parallel',
+  );
+
+  $legacy_json = json_encode($legacy_config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($legacy_json))
+  {
+    throw new RuntimeException('Die bestehende Verbindung konnte nicht als Migrations-Fallback markiert werden.');
+  }
+
+  $table = bratonien_tools_nc_connector_table();
+  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($legacy_json)."', updated='".pwg_db_real_escape_string((string)$now)."' WHERE id=".$legacy_id." LIMIT 1");
+
+  return $legacy_id;
+}
+
+/**
+ * Create or update a WebDAV-backed connector from the user-facing wizard.
+ *
+ * Remote connections are updated in place. When the editor was opened for a
+ * legacy connection, a WebDAV successor is created and the legacy connection
+ * stays available as fallback.
 */
 function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
 {
@@ -14,7 +87,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()

  if (empty($state['scan_ok']) || empty($state['technical_complete']))
  {
-    throw new RuntimeException('Die WebDAV-Verbindung wurde im Assistenten noch nicht vollstaendig vorbereitet.');
+    throw new RuntimeException('Die WebDAV-Verbindung wurde im Assistenten noch nicht vollständig vorbereitet.');
  }

  $base_url = rtrim(trim((string)($state['base_url'] ?? '')), '/');
@@ -22,7 +95,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
  $password = (string)($state['_password'] ?? '');
  if ($base_url === '' || $username === '' || $password === '')
  {
-    throw new RuntimeException('Fuer den WebDAV-Zugang fehlen Nextcloud-Adresse oder Zugangsdaten.');
+    throw new RuntimeException('Für den WebDAV-Zugang fehlen Nextcloud-Adresse oder Zugangsdaten.');
  }

  $selected = isset($state['directory_selected']) && is_array($state['directory_selected'])
@@ -31,26 +104,17 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
  $selected_ids = isset($state['directory_selected_fileids']) && is_array($state['directory_selected_fileids'])
    ? $state['directory_selected_fileids']
    : array();
-
-  if (!$selected)
-  {
-    $selected = array('');
-  }
+  $selected = array_values(array_filter($selected, function($path) { return $path !== ''; }));
+  if (!$selected) throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis auswählen.');

  $roots = array();
  foreach ($selected as $path)
  {
    $fileid = isset($selected_ids[$path]) ? (int)$selected_ids[$path] : 0;
-    if ($fileid < 1)
-    {
-      throw new RuntimeException('Fuer ein ausgewaehltes Nextcloud-Verzeichnis fehlt die eindeutige Datei-ID.');
-    }
-    $display_name = $path === ''
-      ? (trim((string)($state['display_name'] ?? '')) !== '' ? trim((string)$state['display_name']) : $username)
-      : basename($path);
+    if ($fileid < 1) throw new RuntimeException('Für ein ausgewähltes Nextcloud-Verzeichnis fehlt die eindeutige Datei-ID.');
    $roots[] = array(
      'fileid'=>$fileid,
-      'display_name'=>$display_name,
+      'display_name'=>basename($path),
      'webdav_path'=>$path,
    );
  }
@@ -74,11 +138,6 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
    && (string)($editing_connection['config']['source_mode'] ?? '') === 'webdav-placeholder'
    && $editing_mode === 'update';

-  if ($editing_mode === 'migrate')
-  {
-    throw new RuntimeException('Die Migrationsfunktion wurde entfernt. Bitte eine normale WebDAV-Verbindung anlegen.');
-  }
-
  $config = array(
    'origin'=>'native',
    'source_mode'=>'webdav-placeholder',
@@ -93,6 +152,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
    'quiet_seconds'=>120,
    'max_wait_seconds'=>900,
    'full_sync_seconds'=>86400,
+    'parallel_test'=>true,
    'piwigo_auth'=>'connection-scoped',
    'api_enabled'=>$api_enabled,
  );
@@ -100,7 +160,7 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
  if ($editing_remote)
  {
    $old_config = is_array($editing_connection['config'] ?? null) ? $editing_connection['config'] : array();
-    foreach (array('state_dir','status_file','parallel_gallery_root','source_fingerprint','runtime') as $preserve)
+    foreach (array('state_dir','status_file','parallel_gallery_root','source_fingerprint','runtime','migration') as $preserve)
    {
      if (array_key_exists($preserve, $old_config)) $config[$preserve] = $old_config[$preserve];
    }
@@ -140,12 +200,12 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nicht serialisiert werden.');

-    pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$editing_id." AND adapter='remote' LIMIT 1");
+    pwg_query("UPDATE `$table` SET name='".pwg_db_real_escape_string($name)."', config_json='".pwg_db_real_escape_string($config_json)."', secret_blob='".pwg_db_real_escape_string($secret_blob)."', updated='".pwg_db_real_escape_string($now)."' WHERE id=".$editing_id." LIMIT 1");
    unset($_SESSION['bratonien_nc_wizard']);

    return array(
      'connection_id'=>$editing_id,
-      'message'=>'WebDAV-Verbindung wurde gespeichert.',
+      'message'=>'WebDAV-Verbindung #'.$editing_id.' wurde gespeichert. Der nächste Connector-Lauf verwendet die neuen Einstellungen.',
    );
  }

@@ -164,14 +224,36 @@ function bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard()
  $id = (int)pwg_db_insert_id();
  if ($id < 1) throw new RuntimeException('Die WebDAV-Verbindung konnte nicht eindeutig angelegt werden.');

-  $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
-  $config['status_file'] = $config['state_dir'].'/connector-status.json';
-  $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-  if (!is_string($config_json)) throw new RuntimeException('WebDAV-Konfiguration konnte nach dem Anlegen nicht serialisiert werden.');
-  pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." AND adapter='remote' LIMIT 1");
+  try
+  {
+    $config['state_dir'] = '/var/lib/bratonien-tools/nc-connector/connection-'.$id;
+    $config['status_file'] = $config['state_dir'].'/connector-status.json';
+    $legacy_fallback_id = bratonien_tools_nc_connector_pair_migration_fallback($id, $config, $now);
+
+    $config_json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (!is_string($config_json))
+    {
+      throw new RuntimeException('Die WebDAV-Verbindung konnte nach dem Anlegen nicht serialisiert werden.');
+    }
+    pwg_query("UPDATE `$table` SET config_json='".pwg_db_real_escape_string($config_json)."' WHERE id=".$id." LIMIT 1");
+  }
+  catch (Throwable $e)
+  {
+    pwg_query("DELETE FROM `$table` WHERE id=".$id." LIMIT 1");
+    throw $e;
+  }

  unset($_SESSION['bratonien_nc_wizard']);

+  if ($legacy_fallback_id !== null)
+  {
+    return array(
+      'connection_id'=>$id,
+      'legacy_fallback_connection_id'=>$legacy_fallback_id,
+      'message'=>'WebDAV-Nachfolger wurde angelegt. Die bestehende lokale Verbindung #'.$legacy_fallback_id.' bleibt als Fallback erhalten.',
+    );
+  }
+
  return array(
    'connection_id'=>$id,
    'message'=>'WebDAV-Verbindung wurde angelegt.',
--- a/include/nc_connector_wizard_webdav_flow.inc.php
+++ b/include/nc_connector_wizard_webdav_flow.inc.php
@@ -28,7 +28,7 @@ function bratonien_tools_nc_wizard_scan_webdav_first()
  {
    try
    {
-      $response = bratonien_tools_nc_transport_http($candidate_url.'/status.php');
+      $response = bratonien_tools_nc_wizard_http($candidate_url.'/status.php');
      if ($response['status'] < 200 || $response['status'] >= 300) continue;
      $candidate_status = json_decode($response['body'], true);
      if (!is_array($candidate_status) || empty($candidate_status['installed'])) continue;
@@ -44,7 +44,7 @@ function bratonien_tools_nc_wizard_scan_webdav_first()
    throw new RuntimeException('Unter dieser Adresse konnte keine Nextcloud erreicht werden. HTTP und HTTPS wurden automatisch geprüft.');
  }

-  $user_response = bratonien_tools_nc_transport_http(
+  $user_response = bratonien_tools_nc_wizard_http(
    $base_url.'/ocs/v2.php/cloud/user?format=json',
    $username,
    $password,
@@ -104,7 +104,7 @@ function bratonien_tools_nc_wizard_scan_webdav_first()
    'api_error'=>'',
  ));

-  bratonien_tools_nc_transport_refresh_directory_state($state, '');
+  bratonien_tools_nc_wizard_refresh_directory_state($state, '');
  bratonien_tools_nc_wizard_store($state);

  return array('message'=>'Nextcloud und WebDAV wurden bestätigt. Jetzt können die Verzeichnisse des angemeldeten Benutzers ausgewählt werden.');
@@ -126,6 +126,7 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
  $selected = isset($state['directory_selected']) && is_array($state['directory_selected'])
    ? array_values(array_unique(array_map(function($path) { return trim((string)$path, '/'); }, $state['directory_selected'])))
    : array();
+  $selected = array_values(array_filter($selected, function($path) { return $path !== ''; }));
  if (!$selected)
  {
    throw new RuntimeException('Bitte mindestens ein Nextcloud-Verzeichnis auswählen.');
@@ -142,12 +143,9 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
    {
      throw new RuntimeException('Für eine Auswahl fehlt die eindeutige Nextcloud-Datei-ID. Bitte das Verzeichnis erneut auswählen.');
    }
-    $display_name = $path === ''
-      ? (trim((string)($state['display_name'] ?? '')) !== '' ? trim((string)$state['display_name']) : (string)$state['username'])
-      : basename($path);
    $roots[] = array(
      'fileid'=>$fileid,
-      'display_name'=>$display_name,
+      'display_name'=>basename($path),
      'webdav_path'=>$path,
    );
  }
@@ -158,35 +156,9 @@ function bratonien_tools_nc_wizard_save_sources_dispatch()
  $state['technical_source'] = 'WebDAV-Verzeichnisse ausgewählt';
  $state['technical_error'] = '';
  $state['directory_selection_ready'] = false;
-
-  if ((string)($state['editing_mode'] ?? '') === 'migrate')
-  {
-    $editing_id = (int)($state['editing_connection_id'] ?? 0);
-    $connection = $editing_id > 0 ? bratonien_tools_nc_connector_connection($editing_id, true) : null;
-    if (!$connection || (string)$connection['adapter'] !== 'local')
-    {
-      throw new RuntimeException('Die zu migrierende Legacy-Verbindung ist nicht mehr verfügbar.');
-    }
-
-    $migration = bratonien_tools_nc_connector_migration_state($connection);
-    if (empty($migration['ready']))
-    {
-      throw new RuntimeException('Die WebDAV-Migration kann noch nicht abgeschlossen werden. Es fehlen: '.implode(', ', $migration['missing']).'.');
-    }
-
-    $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
-    $state['_api_key_id'] = (string)($credentials['api_key_id'] ?? '');
-    $state['_api_key_secret'] = (string)($credentials['api_key_secret'] ?? '');
-    $state['api_status'] = !empty($migration['api_available']) ? 'ok' : 'skipped';
-    $state['api_error'] = '';
-    $state['step'] = 4;
-    bratonien_tools_nc_wizard_store($state);
-
-    return array('message'=>'WebDAV-Quelle wurde übernommen. Mit „Migration starten“ wird jetzt der WebDAV-Nachfolger angelegt; die Legacy-Verbindung bleibt als Fallback erhalten.');
-  }
-
  bratonien_tools_nc_wizard_store($state);
-  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen. Die Verbindung ist für den nächsten Einrichtungsschritt vorbereitet.');
+
+  return array('message'=>'WebDAV-Verzeichnisse wurden übernommen. Die Verbindung ist für den parallelen Testweg vorbereitet.');
 }

 function bratonien_tools_nc_wizard_finish_dispatch()
--- a/include/nc_transport.inc.php
+++ b/include/nc_transport.inc.php
@@ -1,340 +0,0 @@
-<?php
-
-function bratonien_tools_nc_transport_host($url)
-{
-  $host = trim((string)parse_url((string)$url, PHP_URL_HOST));
-  if ($host === '') throw new RuntimeException('Die Nextcloud-Adresse enthält keinen gültigen Hostnamen oder keine IP-Adresse.');
-  return trim($host, '[]');
-}
-
-function bratonien_tools_nc_transport_scheme($url)
-{
-  $scheme = strtolower(trim((string)parse_url((string)$url, PHP_URL_SCHEME)));
-  if (!in_array($scheme, array('http','https'), true)) throw new RuntimeException('Nextcloud muss per HTTP oder HTTPS angesprochen werden.');
-  return $scheme;
-}
-
-function bratonien_tools_nc_transport_is_ip($host)
-{
-  return filter_var(trim((string)$host, '[]'), FILTER_VALIDATE_IP) !== false;
-}
-
-function bratonien_tools_nc_transport_public_ip($host)
-{
-  static $cache = array();
-
-  $host = strtolower(trim((string)$host, '[]'));
-  if ($host === '') throw new RuntimeException('Für die Nextcloud-Verbindung fehlt der Hostname.');
-  if (bratonien_tools_nc_transport_is_ip($host)) return $host;
-  if (isset($cache[$host])) return $cache[$host];
-  if (!function_exists('curl_init')) throw new RuntimeException('Der öffentliche DNS-Abgleich benötigt PHP-cURL.');
-
-  $providers = array(
-    array('host'=>'dns.google', 'ips'=>array('8.8.8.8','8.8.4.4'), 'url'=>'https://dns.google/resolve?name='.rawurlencode($host).'&type=A'),
-    array('host'=>'cloudflare-dns.com', 'ips'=>array('1.1.1.1','1.0.0.1'), 'url'=>'https://cloudflare-dns.com/dns-query?name='.rawurlencode($host).'&type=A'),
-  );
-
-  foreach ($providers as $provider)
-  {
-    foreach ($provider['ips'] as $resolver_ip)
-    {
-      $ch = curl_init($provider['url']);
-      $options = array(
-        CURLOPT_RETURNTRANSFER=>true,
-        CURLOPT_FOLLOWLOCATION=>false,
-        CURLOPT_CONNECTTIMEOUT=>5,
-        CURLOPT_TIMEOUT=>10,
-        CURLOPT_HTTPHEADER=>array('Accept: application/dns-json'),
-        CURLOPT_USERAGENT=>'Bratonien-Tools-DNS/0.9.7.1',
-      );
-      if (defined('CURLOPT_RESOLVE'))
-      {
-        $options[CURLOPT_RESOLVE] = array($provider['host'].':443:'.$resolver_ip);
-      }
-      curl_setopt_array($ch, $options);
-      $body = curl_exec($ch);
-      $errno = curl_errno($ch);
-      $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
-      curl_close($ch);
-      if ($body === false || $errno !== 0 || $status < 200 || $status >= 300) continue;
-
-      $decoded = json_decode((string)$body, true);
-      if (!is_array($decoded) || !isset($decoded['Answer']) || !is_array($decoded['Answer'])) continue;
-      foreach ($decoded['Answer'] as $answer)
-      {
-        if ((int)($answer['type'] ?? 0) !== 1) continue;
-        $ip = trim((string)($answer['data'] ?? ''));
-        if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) continue;
-        return $cache[$host] = $ip;
-      }
-    }
-  }
-
-  throw new RuntimeException('Für '.$host.' konnte keine öffentliche IPv4-Adresse ermittelt werden.');
-}
-
-function bratonien_tools_nc_transport_resolve_entry($url)
-{
-  $scheme = bratonien_tools_nc_transport_scheme($url);
-  $host = bratonien_tools_nc_transport_host($url);
-  if (bratonien_tools_nc_transport_is_ip($host)) return null;
-
-  $port = (int)parse_url((string)$url, PHP_URL_PORT);
-  if ($port < 1) $port = $scheme === 'https' ? 443 : 80;
-  $ip = bratonien_tools_nc_transport_public_ip($host);
-  return $host.':'.$port.':'.$ip;
-}
-
-function bratonien_tools_nc_transport_apply_curl(array &$options, $url)
-{
-  $entry = bratonien_tools_nc_transport_resolve_entry($url);
-  if ($entry !== null)
-  {
-    if (!defined('CURLOPT_RESOLVE')) throw new RuntimeException('Diese cURL-Version unterstützt keine direkte Host-zu-IP-Zuordnung.');
-    $options[CURLOPT_RESOLVE] = array($entry);
-  }
-}
-
-function bratonien_tools_nc_transport_http($url, $username = '', $password = '', array $headers = array())
-{
-  if (!function_exists('curl_init')) throw new RuntimeException('Der Server kann Nextcloud derzeit nicht per HTTP prüfen.');
-
-  $ch = curl_init($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'), $headers),
-    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Wizard/0.9.7.1',
-  );
-  bratonien_tools_nc_transport_apply_curl($options, $url);
-
-  if ($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);
-  $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
-  curl_close($ch);
-
-  if ($body === false || $errno !== 0)
-  {
-    throw new RuntimeException('Verbindung fehlgeschlagen'.($error !== '' ? ': '.$error : '.'));
-  }
-
-  return array('status'=>$status, 'body'=>(string)$body);
-}
-
-function bratonien_tools_nc_transport_webdav_list(array $state, $path = '')
-{
-  if (empty($state['scan_ok']) || trim((string)$state['base_url']) === '' || trim((string)$state['username']) === '' || (string)$state['_password'] === '')
-  {
-    throw new RuntimeException('Die Nextcloud-Sitzung des Assistenten ist nicht vollständig.');
-  }
-  if (!function_exists('curl_init')) throw new RuntimeException('cURL ist für die Verzeichnisauswahl nicht verfügbar.');
-
-  $path = trim((string)$path, '/');
-  if ($path !== '' && preg_match('#(^|/)\.\.(/|$)#', $path)) throw new RuntimeException('Ungültiger Verzeichnispfad.');
-
-  $segments = $path === '' ? array() : array_map('rawurlencode', explode('/', $path));
-  $user = rawurlencode((string)$state['username']);
-  $url = rtrim((string)$state['base_url'], '/').'/remote.php/dav/files/'.$user.'/'.implode('/', $segments);
-  if (substr($url, -1) !== '/') $url .= '/';
-
-  $body = '<?xml version="1.0"?><d:propfind xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns"><d:prop><d:resourcetype/><d:displayname/><oc:fileid/></d:prop></d:propfind>';
-  $ch = curl_init($url);
-  $options = array(
-    CURLOPT_RETURNTRANSFER=>true,
-    CURLOPT_CUSTOMREQUEST=>'PROPFIND',
-    CURLOPT_POSTFIELDS=>$body,
-    CURLOPT_HTTPHEADER=>array('Depth: 1','Content-Type: application/xml; charset=utf-8'),
-    CURLOPT_HTTPAUTH=>CURLAUTH_BASIC,
-    CURLOPT_USERPWD=>(string)$state['username'].':'.(string)$state['_password'],
-    CURLOPT_CONNECTTIMEOUT=>8,
-    CURLOPT_TIMEOUT=>20,
-  );
-  bratonien_tools_nc_transport_apply_curl($options, $url);
-  curl_setopt_array($ch, $options);
-  $response = curl_exec($ch);
-  $errno = curl_errno($ch);
-  $error = curl_error($ch);
-  $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
-  curl_close($ch);
-
-  if ($response === false || $errno !== 0) throw new RuntimeException('Nextcloud-Verzeichnisse konnten nicht geladen werden'.($error !== '' ? ': '.$error : '.'));
-  if ($status === 401 || $status === 403) throw new RuntimeException('Nextcloud hat den Zugriff auf dieses Verzeichnis abgelehnt.');
-  if ($status !== 207) throw new RuntimeException('Nextcloud-Verzeichnisabfrage antwortete mit HTTP '.$status.'.');
-
-  libxml_use_internal_errors(true);
-  $xml = simplexml_load_string((string)$response);
-  if ($xml === false) throw new RuntimeException('Nextcloud hat eine ungültige WebDAV-Antwort geliefert.');
-  $xml->registerXPathNamespace('d', 'DAV:');
-  $xml->registerXPathNamespace('oc', 'http://owncloud.org/ns');
-
-  $children = array();
-  $fileids = array();
-  $current_fileid = 0;
-  $base_path = (string)parse_url($url, PHP_URL_PATH);
-
-  foreach ($xml->xpath('//d:response') as $item)
-  {
-    $item->registerXPathNamespace('d', 'DAV:');
-    $item->registerXPathNamespace('oc', 'http://owncloud.org/ns');
-    $hrefs = $item->xpath('d:href');
-    $collections = $item->xpath('d:propstat/d:prop/d:resourcetype/d:collection');
-    $ids = $item->xpath('d:propstat/d:prop/oc:fileid');
-    if (!$hrefs || !$collections || !$ids) continue;
-
-    $fileid = (int)trim((string)$ids[0]);
-    if ($fileid < 1) continue;
-    $href = rawurldecode((string)$hrefs[0]);
-    $href_path = (string)parse_url($href, PHP_URL_PATH);
-
-    if (rtrim($href_path, '/') === rtrim($base_path, '/'))
-    {
-      $current_fileid = $fileid;
-      continue;
-    }
-
-    $name = basename(rtrim($href_path, '/'));
-    if ($name === '') continue;
-    $child_path = $path === '' ? $name : $path.'/'.$name;
-    $children[$child_path] = $name;
-    $fileids[$child_path] = $fileid;
-  }
-  natcasesort($children);
-
-  if ($current_fileid < 1) throw new RuntimeException('Nextcloud hat für das aktuelle Verzeichnis keine eindeutige Datei-ID geliefert.');
-
-  $parent = '';
-  if ($path !== '')
-  {
-    $parts = explode('/', $path);
-    array_pop($parts);
-    $parent = implode('/', $parts);
-  }
-
-  return array(
-    'current'=>$path,
-    'parent'=>$parent,
-    'children'=>$children,
-    'current_fileid'=>$current_fileid,
-    'fileids'=>$fileids,
-  );
-}
-
-function bratonien_tools_nc_transport_refresh_directory_state(array &$state, $path = null)
-{
-  if ($path === null) $path = (string)($state['directory_path'] ?? '');
-  $listing = bratonien_tools_nc_transport_webdav_list($state, $path);
-  $state['directory_path'] = (string)$listing['current'];
-  $state['directory_parent'] = (string)$listing['parent'];
-  $state['directory_children'] = (array)$listing['children'];
-  $state['directory_current_fileid'] = (int)$listing['current_fileid'];
-  $state['directory_fileids'] = (array)$listing['fileids'];
-  if (!isset($state['directory_selected']) || !is_array($state['directory_selected'])) $state['directory_selected'] = array();
-  if (!isset($state['directory_selected_fileids']) || !is_array($state['directory_selected_fileids'])) $state['directory_selected_fileids'] = array();
-}
-
-function bratonien_tools_nc_transport_wizard_directory_browse()
-{
-  $state = bratonien_tools_nc_wizard_state();
-  if ((int)$state['step'] !== 2 || (string)$state['technical_stage'] !== 'mounts' || empty($state['directory_selection_ready'])) throw new RuntimeException('Die Verzeichnisauswahl ist in diesem Fenster nicht verfügbar.');
-  $path = trim((string)($_POST['nc_wizard_directory_path'] ?? ''), '/');
-  bratonien_tools_nc_transport_refresh_directory_state($state, $path);
-  bratonien_tools_nc_wizard_store($state);
-  return array('message'=>'Verzeichnis geöffnet.');
-}
-
-function bratonien_tools_nc_transport_edit_start()
-{
-  $id = (int)($_POST['connection_id'] ?? 0);
-  $connection = bratonien_tools_nc_connector_connection($id, true);
-  if (!$connection) throw new RuntimeException('Connector-Verbindung wurde nicht gefunden.');
-
-  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
-  $is_webdav = (string)$connection['adapter'] === 'remote'
-    && (string)($config['source_mode'] ?? '') === 'webdav-placeholder';
-  if (!$is_webdav) return bratonien_tools_nc_connector_edit_start();
-
-  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
-  $base_url = trim((string)($config['nextcloud_url'] ?? ''));
-  $username = trim((string)($credentials['nextcloud_user'] ?? ''));
-  if ($username === '') $username = trim((string)($config['nextcloud_access_user'] ?? $config['access_user'] ?? ''));
-  $password = (string)($credentials['nextcloud_password'] ?? '');
-
-  $roots = isset($config['roots']) && is_array($config['roots']) ? array_values($config['roots']) : array();
-  $selected = array();
-  $selected_ids = array();
-  foreach ($roots as $root)
-  {
-    $path = trim((string)($root['webdav_path'] ?? ''), '/');
-    $fileid = (int)($root['fileid'] ?? 0);
-    if ($fileid < 1) continue;
-    $selected[] = $path;
-    $selected_ids[$path] = $fileid;
-  }
-
-  $state = bratonien_tools_nc_wizard_state();
-  $state = array_merge($state, array(
-    'editing_connection_id'=>$id,
-    'editing_adapter'=>(string)$connection['adapter'],
-    'editing_mode'=>'update',
-    'connection_name'=>(string)$connection['name'],
-    'host_input'=>$base_url,
-    'base_url'=>$base_url,
-    'username'=>$username,
-    '_password'=>$password,
-    '_fallback_user'=>(string)($credentials['piwigo_user'] ?? ''),
-    '_fallback_password'=>(string)($credentials['piwigo_password'] ?? ''),
-    '_api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
-    '_api_key_secret'=>(string)($credentials['api_key_secret'] ?? ''),
-    'api_status'=>trim((string)($credentials['api_key_id'] ?? '')) !== '' && trim((string)($credentials['api_key_secret'] ?? '')) !== '' ? 'ok' : 'pending',
-    'roots'=>$roots,
-    'directory_selected'=>$selected,
-    'directory_selected_fileids'=>$selected_ids,
-    'source_mode'=>'webdav-placeholder',
-    'transport'=>'webdav',
-  ));
-
-  if ($base_url !== '' && $username !== '' && $password !== '')
-  {
-    $state['step'] = 2;
-    $state['scan_ok'] = true;
-    $state['technical_stage'] = 'mounts';
-    $state['technical_source'] = 'WebDAV';
-    $state['technical_error'] = '';
-    $state['technical_complete'] = false;
-    $state['directory_selection_ready'] = true;
-    $state['directory_path'] = '';
-    $state['directory_parent'] = '';
-    $state['directory_children'] = array();
-    $state['directory_current_fileid'] = 0;
-
-    try
-    {
-      bratonien_tools_nc_transport_refresh_directory_state($state, '');
-    }
-    catch (Throwable $e)
-    {
-      $state['step'] = 1;
-      $state['scan_ok'] = false;
-      $state['technical_error'] = $e->getMessage();
-    }
-  }
-  else
-  {
-    $state['step'] = 1;
-    $state['scan_ok'] = false;
-  }
-
-  bratonien_tools_nc_wizard_store($state);
-  return array('message'=>'Verbindung #'.$id.' wurde zum Bearbeiten geöffnet.');
-}
--- a/include/tool_registry.inc.php
+++ b/include/tool_registry.inc.php
@@ -6,13 +6,19 @@ if (!defined('PHPWG_ROOT_PATH'))

 if (isset($GLOBALS['template']) && is_object($GLOBALS['template']) && method_exists($GLOBALS['template'], 'func_combine_script'))
 {
-  $script_version = function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.7.1';
+  $script_version = function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.6.15';
  $GLOBALS['template']->func_combine_script(array(
    'id'=>'bratonien_nc_connector_edit_v2',
    'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_edit_v2.js',
    'load'=>'footer',
    'version'=>$script_version,
  ));
+  $GLOBALS['template']->func_combine_script(array(
+    'id'=>'bratonien_nc_connector_source_ui',
+    'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_source_ui.js',
+    'load'=>'footer',
+    'version'=>$script_version,
+  ));
 }

 require_once(BRATONIEN_TOOLS_PATH . 'tools/image_cache.inc.php');
@@ -28,6 +34,7 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/album_shares.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/album_lock.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_manage.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_takeover.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_auth.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_create_api.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_piwigo_api.inc.php');
@@ -41,24 +48,6 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_delete_safe.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_webdav.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_webdav_flow.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_edit.inc.php');
-require_once(BRATONIEN_TOOLS_PATH . 'include/nc_transport.inc.php');
-require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
-require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_system.inc.php');
-
-function bratonien_tools_nc_connector_run_now()
-{
-  $connection_id = isset($_POST['connection_id']) ? max(0, (int)$_POST['connection_id']) : 0;
-  if ($connection_id > 0)
-  {
-    $connection = bratonien_tools_nc_connector_connection($connection_id, false);
-    if (!$connection)
-    {
-      throw new RuntimeException('Die ausgewählte Verbindung existiert nicht.');
-    }
-  }
-  $result = bratonien_tools_nc_scheduler_spawn(true, $connection_id);
-  return array('message'=>(string)($result['message'] ?? ($connection_id > 0 ? 'Abgleich wurde gestartet.' : 'Abgleich für alle Verbindungen wurde gestartet.')));
-}

 function bratonien_tools_get_tools()
 {
@@ -83,16 +72,17 @@ function bratonien_tools_get_tools()
    'album_share_create' => array('handler' => 'bratonien_tools_create_album_share'),
    'album_share_regenerate_link' => array('handler' => 'bratonien_tools_regenerate_album_share_link'),
    'album_share_revoke' => array('handler' => 'bratonien_tools_revoke_album_share'),
+    'nc_connector_create_local' => array('handler' => 'bratonien_tools_nc_connector_create_local_api_first'),
    'nc_connector_create_webdav_parallel' => array('handler' => 'bratonien_tools_nc_connector_create_webdav_placeholder_from_wizard'),
-    'nc_connector_edit_start' => array('handler' => 'bratonien_tools_nc_transport_edit_start'),
+    'nc_connector_edit_start' => array('handler' => 'bratonien_tools_nc_connector_edit_start'),
+    'nc_connector_migrate_start' => array('handler' => 'bratonien_tools_nc_connector_migrate_start'),
    'nc_connector_update_local' => array('handler' => 'bratonien_tools_nc_connector_update_local_friendly'),
    'nc_connector_delete' => array('handler' => 'bratonien_tools_nc_connector_delete_safe'),
    'nc_connector_update_name' => array('handler' => 'bratonien_tools_nc_connector_update_name'),
    'nc_connector_update_technical' => array('handler' => 'bratonien_tools_nc_connector_update_technical'),
-    'nc_connector_run_now' => array('handler' => 'bratonien_tools_nc_connector_run_now'),
    'nc_connector_wizard_scan' => array('handler' => 'bratonien_tools_nc_wizard_scan_webdav_first'),
    'nc_connector_wizard_save_technical' => array('handler' => 'bratonien_tools_nc_wizard_save_technical_flow'),
-    'nc_connector_wizard_directory_browse' => array('handler' => 'bratonien_tools_nc_transport_wizard_directory_browse'),
+    'nc_connector_wizard_directory_browse' => array('handler' => 'bratonien_tools_nc_wizard_directory_browse'),
    'nc_connector_wizard_directory_add' => array('handler' => 'bratonien_tools_nc_wizard_directory_add'),
    'nc_connector_wizard_directory_remove' => array('handler' => 'bratonien_tools_nc_wizard_directory_remove'),
    'nc_connector_wizard_save_mounts' => array('handler' => 'bratonien_tools_nc_wizard_save_sources_dispatch'),
@@ -102,7 +92,10 @@ function bratonien_tools_get_tools()
    'nc_connector_wizard_finish' => array('handler' => 'bratonien_tools_nc_wizard_finish_dispatch'),
    'nc_connector_wizard_back' => array('handler' => 'bratonien_tools_nc_wizard_back'),
    'nc_connector_wizard_reset' => array('handler' => 'bratonien_tools_nc_wizard_reset'),
+    'nc_connector_import_legacy' => array('handler' => 'bratonien_tools_nc_connector_import_legacy'),
    'nc_connector_verify' => array('handler' => 'bratonien_tools_nc_connector_verify_connection_scoped'),
+    'nc_connector_prepare_takeover' => array('handler' => 'bratonien_tools_nc_connector_prepare_takeover'),
+    'nc_connector_cancel_takeover' => array('handler' => 'bratonien_tools_nc_connector_cancel_takeover'),
    'nc_connector_piwigo_api_test' => array('handler' => 'bratonien_tools_nc_connector_piwigo_api_test'),
    'nc_connector_piwigo_api_delete' => array('handler' => 'bratonien_tools_nc_connector_api_delete'),
    'nc_connector_fallback_save' => array('handler' => 'bratonien_tools_nc_connector_fallback_save_scoped'),
--- a/include/watermark_engine.inc.php
+++ b/include/watermark_engine.inc.php
@@ -8,17 +8,8 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/watermark_base.inc.php');

 function bratonien_tools_watermark_engine_enabled()
 {
-  static $initialized = false;
-  static $enabled = false;
-
-  if ($initialized)
-  {
-    return $enabled;
-  }
-
  $config = bratonien_tools_get_watermark_engine_config();
  $enabled = !empty($config['enabled']);
-  $initialized = true;

  // Piwigo recalculates use_watermark for custom derivatives from the native
  // watermark file itself. Therefore an active Bratonien engine must keep the
--- a/js/admin_tabs.js
+++ b/js/admin_tabs.js
@@ -1,6 +1,94 @@
 (function () {
  'use strict';

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

-  if (document.readyState === 'loading') {
-    document.addEventListener('DOMContentLoaded', initBratonienTabs);
-  } else {
+  function init() {
    initBratonienTabs();
+    initNcRouteStatus();
+  }
+
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', init);
+  } else {
+    init();
  }
 })();
--- a/js/nc_connector_edit_v2.js
+++ b/js/nc_connector_edit_v2.js
@@ -1,193 +1,324 @@
 (function () {
  'use strict';

-  var statusEndpoint = 'plugins/bratonien_tools/nc-connector-status.php';
-
-  function ensureLiveStatus(detail, actions) {
-    var node = detail.querySelector('[data-nc-run-live]');
-    if (node) return node;
-
-    node = document.createElement('div');
-    node.setAttribute('data-nc-run-live', '1');
-    node.className = 'bratonien-base-note';
-    node.style.marginTop = '.6rem';
-    node.hidden = true;
-    actions.parentNode.insertBefore(node, actions.nextSibling);
-    return node;
-  }
-
-  function renderLiveStatus(node, data) {
-    var state = String(data && data.state || '');
-    var message = String(data && data.message || '');
-    var detail = String(data && data.error_detail || '');
-
-    node.hidden = false;
-    node.innerHTML = '';
-
-    var strong = document.createElement('strong');
-    if (state === 'queued') strong.textContent = 'Angefordert: ';
-    else if (state === 'running') strong.textContent = 'Läuft: ';
-    else if (state === 'ok' || state === 'success') strong.textContent = 'Erfolgreich: ';
-    else if (state === 'error') strong.textContent = 'Fehler: ';
-    else strong.textContent = 'Status: ';
-    node.appendChild(strong);
-    node.appendChild(document.createTextNode(message || state || 'Status wird ermittelt …'));
-
-    if (detail) {
-      var details = document.createElement('details');
-      details.style.marginTop = '.35rem';
-      var summary = document.createElement('summary');
-      summary.textContent = 'Technische Laufzeitdetails';
-      var pre = document.createElement('pre');
-      pre.style.whiteSpace = 'pre-wrap';
-      pre.style.wordBreak = 'break-word';
-      pre.textContent = detail;
-      details.appendChild(summary);
-      details.appendChild(pre);
-      node.appendChild(details);
+  function ready(callback) {
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', function () { window.setTimeout(callback, 0); });
+    } else {
+      window.setTimeout(callback, 0);
    }
  }

-  function pollConnection(connectionId, node, button) {
-    var attempts = 0;
-    var maxAttempts = 180;
-    var timer = null;
-
-    function stop() {
-      if (timer) window.clearInterval(timer);
-      timer = null;
-      if (button) {
-        button.disabled = false;
-        button.textContent = 'Jetzt abgleichen';
-      }
-    }
-
-    function poll() {
-      attempts += 1;
-      fetch(statusEndpoint + '?connection_id=' + encodeURIComponent(connectionId) + '&_=' + Date.now(), {
-        credentials: 'same-origin',
-        cache: 'no-store',
-        headers: {'Accept': 'application/json'}
-      })
-        .then(function (response) {
-          if (!response.ok) throw new Error('HTTP ' + response.status);
-          return response.json();
-        })
-        .then(function (data) {
-          renderLiveStatus(node, data);
-          var state = String(data && data.state || '');
-          if (state === 'ok' || state === 'success' || state === 'error' || attempts >= maxAttempts) stop();
-        })
-        .catch(function (error) {
-          if (attempts >= maxAttempts) {
-            renderLiveStatus(node, {state: 'error', message: 'Status konnte nicht gelesen werden.', error_detail: error.message});
-            stop();
-          }
-        });
-    }
-
-    poll();
-    timer = window.setInterval(poll, 1000);
-  }
-
-  function bindRunNow(form, detail, liveNode) {
-    if (form.dataset.ncRunBound === '1') return;
-    form.dataset.ncRunBound = '1';
-
-    form.addEventListener('submit', function (event) {
-      event.preventDefault();
-      detail.open = true;
-
-      var button = form.querySelector('button[value="nc_connector_run_now"]');
-      var connectionInput = form.querySelector('input[name="connection_id"]');
-      if (!connectionInput) return;
-
-      if (button) {
-        button.disabled = true;
-        button.textContent = 'Abgleich wird gestartet …';
-      }
-      renderLiveStatus(liveNode, {state: 'queued', message: 'Abgleich wird angefordert …'});
-
-      fetch(form.action || window.location.href, {
-        method: 'POST',
-        credentials: 'same-origin',
-        cache: 'no-store',
-        body: new FormData(form)
-      })
-        .then(function (response) {
-          if (!response.ok) throw new Error('HTTP ' + response.status);
-          renderLiveStatus(liveNode, {state: 'queued', message: 'Abgleich wurde angefordert.'});
-          pollConnection(connectionInput.value, liveNode, button);
-        })
-        .catch(function (error) {
-          renderLiveStatus(liveNode, {state: 'error', message: 'Abgleich konnte nicht angefordert werden.', error_detail: error.message});
-          if (button) {
-            button.disabled = false;
-            button.textContent = 'Jetzt abgleichen';
-          }
-        });
-    });
-  }
-
-  function restoreRunNowButtons() {
+  ready(function () {
    var section = document.getElementById('nc-connector');
    if (!section) return;

-    var connectionCard = null;
-    var headings = section.querySelectorAll('h4');
-    for (var i = 0; i < headings.length; i++) {
-      if ((headings[i].textContent || '').trim() === 'Bestehende Verbindungen') {
-        connectionCard = headings[i].closest('.bratonien-card');
-        break;
+    var pwgTokenInput = section.querySelector('input[name="pwg_token"]');
+    var pwgToken = pwgTokenInput ? pwgTokenInput.value : '';
+    var modeKey = 'bratonienNcWizardMode';
+
+    function escapeHtml(value) {
+      return String(value == null ? '' : value).replace(/[&<>"']/g, function (c) {
+        return {'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot',"'":'&#039;'}[c];
+      });
+    }
+
+    function setMode(value) {
+      try { sessionStorage.setItem(modeKey, value); } catch (e) {}
+    }
+
+    function postForm(label, tool, id, mode) {
+      var form = document.createElement('form');
+      form.method = 'post';
+      form.style.display = 'inline';
+      form.dataset.ncV2Action = tool;
+      form.innerHTML = '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+        + '<input type="hidden" name="connection_id" value="'+escapeHtml(id)+'">'
+        + '<button class="buttonLike" type="submit" name="bratonien_tool" value="'+escapeHtml(tool)+'">'+escapeHtml(label)+'</button>';
+      if (mode) form.addEventListener('submit', function () { setMode(mode); }, true);
+      return form;
+    }
+
+    function loadConnection(id) {
+      return fetch('plugins/bratonien_tools/nc-connector-edit-data.php?connection_id='+encodeURIComponent(id)+'&_='+Date.now(), {
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'}
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok) throw new Error(data.error || ('HTTP '+response.status));
+          return data;
+        });
+      });
+    }
+
+    function dialog() {
+      var node = document.getElementById('bratonien-nc-connection-edit-v2');
+      if (node) return node;
+      node = document.createElement('dialog');
+      node.id = 'bratonien-nc-connection-edit-v2';
+      node.className = 'bratonien-edit-dialog';
+      node.innerHTML = '<div class="bratonien-edit-dialog__body">'
+        + '<div style="display:flex;align-items:flex-start;justify-content:space-between;gap:1rem">'
+        + '<div><h4 style="margin:0">Verbindung bearbeiten</h4><p class="bratonien-base-note" style="margin:.35rem 0 0">Alle Daten dieser Verbindung werden hier gepflegt. Eine Migration ist ein eigener Vorgang.</p></div>'
+        + '<button type="button" class="buttonLike" data-edit-v2-close>Schließen</button></div>'
+        + '<div data-edit-v2-content style="margin-top:1rem"></div></div>';
+      document.body.appendChild(node);
+      node.querySelector('[data-edit-v2-close]').addEventListener('click', function () { node.close(); });
+      node.addEventListener('click', function (event) { if (event.target === node) node.close(); });
+      return node;
+    }
+
+    function storageRow(storage) {
+      storage = storage || {};
+      return '<div class="bratonien-storage-row" data-storage-row>'
+        + '<label>Storage-ID<input name="nc_storage_id[]" value="'+escapeHtml(storage.storage_id || '')+'" required></label>'
+        + '<label>Quellordner<input name="nc_source_prefix[]" value="'+escapeHtml(storage.source_prefix || '')+'" placeholder="optional"></label>'
+        + '<label>Lokaler Speicherpfad<input name="nc_local_mount[]" value="'+escapeHtml(storage.local_mount || '')+'" required></label>'
+        + '<button type="button" class="buttonLike" data-remove-storage>Entfernen</button></div>';
+    }
+
+    function clearValidation(form) {
+      [].slice.call(form.querySelectorAll('[aria-invalid="true"]')).forEach(function (field) {
+        field.removeAttribute('aria-invalid');
+        field.style.borderColor = '';
+        field.style.boxShadow = '';
+      });
+      [].slice.call(form.querySelectorAll('[data-edit-v2-field-error]')).forEach(function (node) { node.remove(); });
+      var box = form.querySelector('[data-edit-v2-error-summary]');
+      if (box) box.remove();
+    }
+
+    function fieldNodes(form, fieldName) {
+      return [].slice.call(form.querySelectorAll('[name="'+fieldName.replace(/"/g, '\\"')+'"]'));
+    }
+
+    function showValidation(form, data) {
+      clearValidation(form);
+      var message = (data && data.message) ? data.message : 'Die Verbindung konnte nicht gespeichert werden.';
+      var summary = document.createElement('div');
+      summary.dataset.editV2ErrorSummary = '1';
+      summary.className = 'bratonien-main-cache__warning';
+      summary.style.margin = '0 0 1rem';
+      summary.style.padding = '.75rem';
+      summary.style.border = '1px solid currentColor';
+      summary.innerHTML = '<strong>Speichern fehlgeschlagen:</strong> '+escapeHtml(message);
+      form.insertBefore(summary, form.firstChild);
+
+      var first = null;
+      var fields = data && Array.isArray(data.fields) ? data.fields : [];
+      fields.forEach(function (fieldName) {
+        fieldNodes(form, fieldName).forEach(function (field) {
+          field.setAttribute('aria-invalid', 'true');
+          field.style.borderColor = '#d65a5a';
+          field.style.boxShadow = '0 0 0 1px #d65a5a';
+          if (!first) first = field;
+          var note = document.createElement('span');
+          note.dataset.editV2FieldError = '1';
+          note.className = 'bratonien-main-cache__warning';
+          note.style.display = 'block';
+          note.style.marginTop = '.25rem';
+          note.textContent = message;
+          field.insertAdjacentElement('afterend', note);
+        });
+      });
+
+      if (first) {
+        first.scrollIntoView({block:'center', behavior:'smooth'});
+        window.setTimeout(function () { first.focus(); }, 150);
+      } else {
+        summary.scrollIntoView({block:'center', behavior:'smooth'});
      }
    }
-    if (!connectionCard) return;

-    var details = connectionCard.querySelectorAll(':scope > details');
-    details.forEach(function (detail) {
-      var actions = detail.querySelector('.bratonien-actions');
+    function submitEditor(form, editDialog) {
+      clearValidation(form);
+      if (!form.reportValidity()) return;
+
+      var submit = form.querySelector('button[type="submit"]');
+      if (submit) submit.disabled = true;
+
+      var body = new FormData(form);
+      fetch('plugins/bratonien_tools/nc-connector-edit-save.php', {
+        method:'POST',
+        credentials:'same-origin',
+        cache:'no-store',
+        headers:{'Accept':'application/json'},
+        body:body
+      }).then(function (response) {
+        return response.json().then(function (data) {
+          if (!response.ok || !data.ok) {
+            showValidation(form, data);
+            return;
+          }
+          editDialog.close();
+          window.location.reload();
+        });
+      }).catch(function (error) {
+        showValidation(form, {message:error.message || String(error), fields:[]});
+      }).finally(function () {
+        if (submit) submit.disabled = false;
+      });
+    }
+
+    function openEditor(id) {
+      var editDialog = dialog();
+      var content = editDialog.querySelector('[data-edit-v2-content]');
+      content.innerHTML = '<p class="bratonien-base-note">Verbindung wird geladen …</p>';
+      if (typeof editDialog.showModal === 'function') editDialog.showModal();
+      else editDialog.setAttribute('open', 'open');
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter !== 'local') throw new Error('Diese Ansicht ist nur für die bestehende Legacy-Verbindung vorgesehen.');
+        var legacy = data.legacy || {};
+        var webdav = data.webdav || {};
+        var storages = Array.isArray(legacy.storages) ? legacy.storages : [];
+        var rows = storages.map(storageRow).join('') || storageRow({});
+        var migrationText = webdav.migration_ready
+          ? '<strong>Bereit.</strong> Nextcloud-Zugang und verbindungseigener Piwigo-API-Key sind vollständig gespeichert.'
+          : '<strong>Noch nicht bereit.</strong> Es fehlen: '+escapeHtml((webdav.migration_missing || []).join(', ') || 'WebDAV-Zugangsdaten')+'.';
+
+        content.innerHTML = '<form method="post" data-edit-v2-form>'
+          + '<input type="hidden" name="pwg_token" value="'+escapeHtml(pwgToken)+'">'
+          + '<input type="hidden" name="connection_id" value="'+escapeHtml(data.id)+'">'
+          + '<h5>Verbindung</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Name</label><input name="connection_name" value="'+escapeHtml(data.name)+'" required>'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Nextcloud / WebDAV</h5>'
+          + '<p class="bratonien-base-note">Diese Angaben werden für den neuen WebDAV-Weg benötigt und gehören zu genau dieser Verbindung.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Nextcloud-Adresse</label><input name="nc_nextcloud_url" value="'+escapeHtml(webdav.nextcloud_url || '')+'" placeholder="https://cloud.example.de">'
+          + '<label class="bratonien-label">Nextcloud-Benutzer</label><input name="nc_nextcloud_user" value="'+escapeHtml(webdav.nextcloud_user || '')+'" autocomplete="username">'
+          + '<label class="bratonien-label">Nextcloud-Passwort</label><input name="nc_nextcloud_password" type="password" autocomplete="current-password" placeholder="'+(webdav.has_nextcloud_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Piwigo API dieser Verbindung</h5>'
+          + '<p class="bratonien-base-note">Der API-Key wird verbindungseigen gespeichert und beim Speichern geprüft.</p>'
+          + '<div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">API-Schlüssel-ID</label><input name="nc_connection_api_key_id" value="'+escapeHtml(webdav.api_key_id || '')+'" autocomplete="off">'
+          + '<label class="bratonien-label">API-Geheimnis</label><input name="nc_connection_api_key_secret" type="password" autocomplete="new-password" placeholder="'+(webdav.has_api_key_secret ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<p class="bratonien-base-note"><strong>WebDAV-Migration:</strong> '+migrationText+'</p>'
+          + '<h5 style="margin-top:1.2rem">Bestehender Legacy-Weg</h5><div class="bratonien-form-grid">'
+          + '<label class="bratonien-label">Datenbank-Server</label><input name="nc_host" value="'+escapeHtml(legacy.host)+'" required>'
+          + '<label class="bratonien-label">Port</label><input name="nc_port" type="number" min="1" max="65535" value="'+escapeHtml(legacy.port || 5432)+'" required>'
+          + '<label class="bratonien-label">Datenbank</label><input name="nc_database" value="'+escapeHtml(legacy.database)+'" required>'
+          + '<label class="bratonien-label">Reader-Benutzer</label><input name="nc_user" value="'+escapeHtml(legacy.user)+'" required>'
+          + '<label class="bratonien-label">Reader-Passwort</label><input name="nc_db_password" type="password" autocomplete="new-password" placeholder="'+(legacy.has_db_password ? 'gespeichert – leer = unverändert' : 'noch nicht gespeichert')+'">'
+          + '</div>'
+          + '<h5 style="margin-top:1.2rem">Speicherorte</h5><div data-storage-list>'+rows+'</div>'
+          + '<button type="button" class="buttonLike" data-add-storage>Speicherort hinzufügen</button>'
+          + '<details style="margin-top:1rem"><summary>Erweiterte Legacy-Einstellungen</summary><div class="bratonien-form-grid" style="margin-top:.75rem">'
+          + '<label class="bratonien-label">Source-View</label><input name="nc_source_view" value="'+escapeHtml(legacy.source_view)+'" required>'
+          + '<label class="bratonien-label">Activity-View</label><input name="nc_activity_view" value="'+escapeHtml(legacy.activity_view)+'" required>'
+          + '<label class="bratonien-label">Piwigo-Galerieordner</label><input name="nc_gallery_root" value="'+escapeHtml(legacy.gallery_root)+'" required>'
+          + '<label class="bratonien-label">Ruhezeit (Sek.)</label><input name="nc_quiet_seconds" type="number" min="0" value="'+escapeHtml(legacy.quiet_seconds)+'">'
+          + '<label class="bratonien-label">Maximale Wartezeit (Sek.)</label><input name="nc_max_wait_seconds" type="number" min="60" value="'+escapeHtml(legacy.max_wait_seconds)+'">'
+          + '<label class="bratonien-label">Vollprüfung nach (Sek.)</label><input name="nc_full_sync_seconds" type="number" min="300" value="'+escapeHtml(legacy.full_sync_seconds)+'">'
+          + '</div></details>'
+          + '<div class="bratonien-actions" style="margin-top:1rem"><button class="buttonLike" type="submit">Änderungen prüfen und speichern</button><button class="buttonLike" type="button" data-edit-v2-cancel>Abbrechen</button></div>'
+          + '</form>';
+
+        var form = content.querySelector('[data-edit-v2-form]');
+        form.querySelector('[data-edit-v2-cancel]').addEventListener('click', function () { editDialog.close(); });
+        form.querySelector('[data-add-storage]').addEventListener('click', function () {
+          form.querySelector('[data-storage-list]').insertAdjacentHTML('beforeend', storageRow({}));
+        });
+        form.addEventListener('click', function (event) {
+          var remove = event.target.closest('[data-remove-storage]');
+          if (!remove) return;
+          var row = remove.closest('[data-storage-row]');
+          if (row) row.remove();
+        });
+        form.addEventListener('submit', function (event) {
+          event.preventDefault();
+          event.stopPropagation();
+          submitEditor(form, editDialog);
+        });
+      }).catch(function (error) {
+        content.innerHTML = '<p class="bratonien-main-cache__warning"><strong>Bearbeiten nicht möglich:</strong> '+escapeHtml(error.message || String(error))+'</p>';
+      });
+    }
+
+    function rebuildLocalActions(deleteForm, id, connectionData) {
+      var actions = deleteForm.parentElement;
      if (!actions) return;

-      var connectionInput = detail.querySelector('input[name="connection_id"]');
-      var tokenInput = detail.querySelector('input[name="pwg_token"]');
-      if (!connectionInput || !tokenInput) return;
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var migrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        var editStart = form.querySelector('button[value="nc_connector_edit_start"]');
+        if (migrate || editStart) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });

-      var form = actions.querySelector('form[data-nc-run-now]');
-      if (!form) {
-        form = document.createElement('form');
-        form.method = 'post';
-        form.setAttribute('data-nc-run-now', '1');
+      var edit = document.createElement('button');
+      edit.type = 'button';
+      edit.className = 'buttonLike';
+      edit.textContent = 'Bearbeiten';
+      edit.addEventListener('click', function () { openEditor(id); });
+      actions.insertBefore(edit, deleteForm);

-        var token = document.createElement('input');
-        token.type = 'hidden';
-        token.name = 'pwg_token';
-        token.value = tokenInput.value;
-        form.appendChild(token);
+      var info = document.createElement('span');
+      info.dataset.ncMigrationInfo = '1';
+      info.className = 'bratonien-base-note';
+      info.textContent = 'WebDAV-Migration wird geprüft …';
+      actions.insertBefore(info, deleteForm);

-        var connection = document.createElement('input');
-        connection.type = 'hidden';
-        connection.name = 'connection_id';
-        connection.value = connectionInput.value;
-        form.appendChild(connection);
+      var dataPromise = connectionData ? Promise.resolve(connectionData) : loadConnection(id);
+      dataPromise.then(function (data) {
+        var webdav = data.webdav || {};
+        if (webdav.migration_ready) {
+          info.remove();
+          actions.insertBefore(postForm('Auf WebDAV migrieren', 'nc_connector_migrate_start', id, 'migrate'), deleteForm);
+        } else {
+          var missing = (webdav.migration_missing || []).join(', ');
+          info.textContent = 'WebDAV-Migration noch nicht bereit: '+(missing || 'Zugangsdaten fehlen')+'. Zuerst „Bearbeiten“.';
+        }
+      }).catch(function (error) {
+        info.textContent = 'WebDAV-Migration kann nicht geprüft werden: '+(error.message || String(error));
+      });
+    }

-        var button = document.createElement('button');
-        button.className = 'buttonLike';
-        button.type = 'submit';
-        button.name = 'bratonien_tool';
-        button.value = 'nc_connector_run_now';
-        button.textContent = 'Jetzt abgleichen';
-        form.appendChild(button);
+    function rebuildRemoteActions(deleteForm, id) {
+      var actions = deleteForm.parentElement;
+      if (!actions) return;
+      [].slice.call(actions.querySelectorAll('form')).forEach(function (form) {
+        var oldEdit = form.querySelector('button[value="nc_connector_edit_start"]');
+        var oldMigrate = form.querySelector('button[value="nc_connector_migrate_start"]');
+        if (oldEdit || oldMigrate) form.remove();
+      });
+      [].slice.call(actions.children).forEach(function (child) {
+        if (child.tagName === 'BUTTON' && (child.textContent || '').trim() === 'Bearbeiten') child.remove();
+        if (child.dataset && child.dataset.ncMigrationInfo) child.remove();
+      });
+      actions.insertBefore(postForm('Bearbeiten', 'nc_connector_edit_start', id, 'edit'), deleteForm);
+    }

-        actions.insertBefore(form, actions.firstChild);
-      }
-
-      bindRunNow(form, detail, ensureLiveStatus(detail, actions));
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_edit_start"]')).forEach(function (button) {
+      var form = button.closest('form');
+      if (form) form.remove();
    });
-  }

-  if (document.readyState === 'loading') {
-    document.addEventListener('DOMContentLoaded', restoreRunNowButtons);
-  } else {
-    restoreRunNowButtons();
-  }
+    [].slice.call(section.querySelectorAll('button[value="nc_connector_delete"]')).forEach(function (deleteButton) {
+      var deleteForm = deleteButton.closest('form');
+      if (!deleteForm) return;
+      var idInput = deleteForm.querySelector('input[name="connection_id"]');
+      if (!idInput) return;
+      var id = idInput.value;
+
+      loadConnection(id).then(function (data) {
+        if (data.adapter === 'local') rebuildLocalActions(deleteForm, id, data);
+        else rebuildRemoteActions(deleteForm, id);
+      }).catch(function (error) {
+        var actions = deleteForm.parentElement;
+        if (!actions) return;
+        var info = document.createElement('span');
+        info.className = 'bratonien-main-cache__warning';
+        info.textContent = 'Verbindungstyp konnte nicht geladen werden: '+(error.message || String(error));
+        actions.insertBefore(info, deleteForm);
+      });
+    });
+  });
 })();
--- a/js/nc_connector_source_ui.js
+++ b/js/nc_connector_source_ui.js
@@ -0,0 +1,90 @@
+(function () {
+  'use strict';
+
+  function enhanceMigrationButtons(root) {
+    [].slice.call(root.querySelectorAll('button[value="nc_connector_migrate_start"]')).forEach(function (button) {
+      button.textContent = 'Nextcloud-Ordner auswählen & migrieren';
+      button.title = 'Die WebDAV-Quelle wird im Nextcloud-Ordnerbrowser ausgewählt. Der bestehende SMB-/Legacy-Speicher wird nicht als WebDAV-Quelle übernommen.';
+    });
+  }
+
+  function enhanceEditor(root) {
+    var form = root.querySelector('[data-edit-v2-form]');
+    if (!form || form.dataset.sourceUiEnhanced === '1') return;
+    form.dataset.sourceUiEnhanced = '1';
+
+    var headings = [].slice.call(form.querySelectorAll('h5'));
+    var legacyHeading = headings.find(function (node) {
+      return (node.textContent || '').trim() === 'Bestehender Legacy-Weg';
+    });
+    var storageHeading = headings.find(function (node) {
+      return (node.textContent || '').trim() === 'Speicherorte';
+    });
+    var storageList = form.querySelector('[data-storage-list]');
+    var addStorage = form.querySelector('[data-add-storage]');
+
+    if (legacyHeading && !form.querySelector('[data-webdav-source-note]')) {
+      var note = document.createElement('p');
+      note.dataset.webdavSourceNote = '1';
+      note.className = 'bratonien-main-cache__warning';
+      note.innerHTML = '<strong>Wichtig:</strong> Der folgende SMB-/lokale Speicher gehört ausschließlich zum bisherigen Legacy-Fallback. Er wird <strong>nicht</strong> als WebDAV-Quelle übernommen. Die WebDAV-Quellordner werden beim Start der Migration direkt aus Nextcloud angezeigt und ausgewählt.';
+      legacyHeading.insertAdjacentElement('beforebegin', note);
+    }
+
+    if (storageHeading && storageList && addStorage) {
+      storageHeading.textContent = 'Legacy-Speicher (nur Fallback)';
+
+      var details = document.createElement('details');
+      details.dataset.legacyStorageTechnical = '1';
+      details.style.marginTop = '.75rem';
+      var summary = document.createElement('summary');
+      summary.textContent = 'Technische Legacy-Speicherzuordnung bearbeiten';
+      details.appendChild(summary);
+
+      var info = document.createElement('p');
+      info.className = 'bratonien-base-note';
+      info.textContent = 'Diese Felder betreffen nur den alten Fallback-Weg. Für WebDAV werden keine SMB-Adressen oder lokalen Mount-Pfade eingegeben.';
+      details.appendChild(info);
+
+      storageHeading.insertAdjacentElement('beforebegin', details);
+      details.appendChild(storageHeading);
+      details.appendChild(storageList);
+      details.appendChild(addStorage);
+
+      addStorage.textContent = 'Legacy-Speicher manuell hinzufügen';
+      addStorage.title = 'Nur für den alten Legacy-Fallback. WebDAV-Ordner werden im Nextcloud-Ordnerbrowser ausgewählt.';
+    }
+  }
+
+  function enhance(root) {
+    if (!root || root.nodeType !== 1) return;
+    enhanceMigrationButtons(root);
+    if (root.matches && root.matches('#bratonien-nc-connection-edit-v2')) enhanceEditor(root);
+    var dialog = root.querySelector ? root.querySelector('#bratonien-nc-connection-edit-v2') : null;
+    if (dialog) enhanceEditor(dialog);
+  }
+
+  function start() {
+    var section = document.getElementById('nc-connector');
+    if (!section) return;
+
+    enhance(section);
+    enhanceMigrationButtons(document);
+
+    var observer = new MutationObserver(function (mutations) {
+      mutations.forEach(function (mutation) {
+        [].slice.call(mutation.addedNodes || []).forEach(function (node) {
+          if (node && node.nodeType === 1) enhance(node);
+        });
+      });
+      var dialog = document.getElementById('bratonien-nc-connection-edit-v2');
+      if (dialog) enhanceEditor(dialog);
+      enhanceMigrationButtons(document);
+    });
+
+    observer.observe(document.body, {childList:true, subtree:true});
+  }
+
+  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', start);
+  else start();
+})();
--- a/main.inc.php
+++ b/main.inc.php
@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.7.24
+Version: 0.9.6.15
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
@@ -24,7 +24,6 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/album_shares.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_orphan_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_productive_ws.inc.php');
-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);
--- a/maintain.class.php
+++ b/maintain.class.php
@@ -8,7 +8,6 @@ require_once(dirname(__FILE__) . '/include/album_shares.inc.php');
 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');

 class bratonien_tools_maintain extends PluginMaintain
 {
@@ -19,14 +18,9 @@ class bratonien_tools_maintain extends PluginMaintain

    $dependency_messages = array();
    bratonien_tools_ensure_dependencies($dependency_messages);
-    if (!bratonien_tools_nc_scheduler_install())
-    {
-      $dependency_messages[] = 'Der native NC-Scheduler konnte sein Piwigo-Laufzeitverzeichnis nicht anlegen.';
-    }

    if (function_exists('conf_update_param'))
    {
-      conf_update_param('bratonien_nc_scheduler_interval', 60);
      conf_update_param('bratonien_dependency_status', json_encode(array(
        'checked_at' => time(),
        'messages' => $dependency_messages,
--- a/nc-connector-edit-data.php
+++ b/nc-connector-edit-data.php
@@ -0,0 +1,100 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Bratonien Tools ist nicht aktiv.'));
+  exit;
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  http_response_code(403);
+  echo json_encode(array('error'=>'Administratorrechte erforderlich.'));
+  exit;
+}
+
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_manage.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_connection_scope.inc.php');
+require_once(BRATONIEN_TOOLS_PATH.'include/nc_connector_edit.inc.php');
+
+$id = (int)($_GET['connection_id'] ?? 0);
+$connection = bratonien_tools_nc_connector_connection($id, true);
+if (!$connection)
+{
+  http_response_code(404);
+  echo json_encode(array('error'=>'Connector-Verbindung wurde nicht gefunden.'));
+  exit;
+}
+
+$config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+$credentials = array();
+$migration = array('ready'=>false, 'missing'=>array());
+try
+{
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+  if ((string)$connection['adapter'] === 'local')
+  {
+    $migration = bratonien_tools_nc_connector_migration_state($connection);
+  }
+}
+catch (Throwable $e)
+{
+  $credentials = array();
+  $migration = array('ready'=>false, 'missing'=>array('gespeicherte Zugangsdaten konnten nicht gelesen werden'));
+}
+
+$storages = array();
+foreach ((array)($config['storages'] ?? array()) as $storage)
+{
+  $storages[] = array(
+    'storage_id'=>(string)($storage['storage_id'] ?? ''),
+    'source_prefix'=>(string)($storage['source_prefix'] ?? ''),
+    'local_mount'=>(string)($storage['local_mount'] ?? ''),
+  );
+}
+
+$payload = array(
+  'id'=>(int)$connection['id'],
+  'name'=>(string)$connection['name'],
+  'adapter'=>(string)$connection['adapter'],
+  'enabled'=>(bool)$connection['enabled'],
+  'takeover_state'=>(string)$connection['takeover_state'],
+  'source_mode'=>(string)($config['source_mode'] ?? ''),
+  'legacy'=>array(
+    'host'=>(string)($config['host'] ?? ''),
+    'port'=>(string)($config['port'] ?? '5432'),
+    'database'=>(string)($config['database'] ?? ''),
+    'user'=>(string)($config['user'] ?? ''),
+    'has_db_password'=>trim((string)($credentials['db_password'] ?? '')) !== '',
+    'source_view'=>(string)($config['source_view'] ?? ''),
+    'activity_view'=>(string)($config['activity_view'] ?? ''),
+    'gallery_root'=>(string)($config['gallery_root'] ?? ''),
+    'quiet_seconds'=>(int)($config['quiet_seconds'] ?? 120),
+    'max_wait_seconds'=>(int)($config['max_wait_seconds'] ?? 900),
+    'full_sync_seconds'=>(int)($config['full_sync_seconds'] ?? 86400),
+    'storages'=>$storages,
+  ),
+  'webdav'=>array(
+    'nextcloud_url'=>(string)($config['nextcloud_url'] ?? ''),
+    'nextcloud_user'=>(string)($credentials['nextcloud_user'] ?? $config['nextcloud_access_user'] ?? $config['access_user'] ?? ''),
+    'has_nextcloud_password'=>(string)($credentials['nextcloud_password'] ?? '') !== '',
+    'api_key_id'=>(string)($credentials['api_key_id'] ?? ''),
+    'has_api_key_secret'=>trim((string)($credentials['api_key_secret'] ?? '')) !== '',
+    'migration_ready'=>!empty($migration['ready']),
+    'migration_missing'=>array_values((array)($migration['missing'] ?? array())),
+  ),
+);
+
+echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
--- a/nc-connector-edit-save.php
+++ b/nc-connector-edit-save.php
@@ -0,0 +1,312 @@
+<?php
+$piwigo_root = realpath(dirname(__DIR__, 2));
+if ($piwigo_root === false)
+{
+  http_response_code(500);
+  exit;
+}
+define('PHPWG_ROOT_PATH', rtrim($piwigo_root, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR);
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, max-age=0');
+
+function bratonien_tools_nc_edit_json($status, array $payload)
+{
+  http_response_code((int)$status);
+  echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  exit;
+}
+
+function bratonien_tools_nc_edit_fail($message, array $fields = array(), $stage = '', $detail = '')
+{
+  $visible = trim((string)$message);
+  if ($stage !== '') $visible = 'Bereich: '.$stage.' — '.$visible;
+  if ($detail !== '') $visible .= ' Technische Ursache: '.$detail;
+
+  bratonien_tools_nc_edit_json(422, array(
+    'ok'=>false,
+    'message'=>$visible,
+    'stage'=>(string)$stage,
+    'detail'=>(string)$detail,
+    'fields'=>array_values(array_unique($fields)),
+  ));
+}
+
+function bratonien_tools_nc_edit_probe($url, $username = '', $password = '', array $headers = array())
+{
+  if (!function_exists('curl_init'))
+  {
+    return array('ok'=>false, 'http'=>0, 'errno'=>-1, 'error'=>'cURL ist in PHP nicht verfügbar.', 'body'=>'');
+  }
+
+  $ch = curl_init($url);
+  $options = array(
+    CURLOPT_RETURNTRANSFER=>true,
+    CURLOPT_FOLLOWLOCATION=>true,
+    CURLOPT_MAXREDIRS=>3,
+    CURLOPT_CONNECTTIMEOUT=>8,
+    CURLOPT_TIMEOUT=>15,
+    CURLOPT_HTTPHEADER=>array_merge(array('Accept: application/json'), $headers),
+    CURLOPT_USERAGENT=>'Bratonien-Tools-NC-Editor/'.(function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : 'dev'),
+  );
+  if ($username !== '')
+  {
+    $options[CURLOPT_HTTPAUTH] = CURLAUTH_BASIC;
+    $options[CURLOPT_USERPWD] = $username.':'.$password;
+  }
+  curl_setopt_array($ch, $options);
+  $body = curl_exec($ch);
+  $errno = curl_errno($ch);
+  $error = curl_error($ch);
+  $http = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+  curl_close($ch);
+
+  return array(
+    'ok'=>$body !== false && $errno === 0,
+    'http'=>$http,
+    'errno'=>$errno,
+    'error'=>$error,
+    'body'=>$body === false ? '' : (string)$body,
+  );
+}
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  bratonien_tools_nc_edit_json(404, array('ok'=>false, 'message'=>'Bratonien Tools ist nicht aktiv.', 'fields'=>array()));
+}
+if (!function_exists('is_admin') || !is_admin())
+{
+  bratonien_tools_nc_edit_json(403, array('ok'=>false, 'message'=>'Administratorrechte erforderlich.', 'fields'=>array()));
+}
+if (($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST')
+{
+  bratonien_tools_nc_edit_json(405, array('ok'=>false, 'message'=>'Nur POST ist erlaubt.', 'fields'=>array()));
+}
+
+try
+{
+  check_pwg_token();
+  require_once(BRATONIEN_TOOLS_PATH.'include/tool_registry.inc.php');
+
+  $id = (int)($_POST['connection_id'] ?? 0);
+  $connection = bratonien_tools_nc_connector_connection($id, true);
+  if (!$connection)
+  {
+    bratonien_tools_nc_edit_fail('Die zu bearbeitende Verbindung wurde nicht gefunden.', array(), 'Verbindung');
+  }
+
+  $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
+  $credentials = bratonien_tools_nc_connector_scoped_secret($connection);
+
+  $nextcloud_input = trim((string)($_POST['nc_nextcloud_url'] ?? ($config['nextcloud_url'] ?? '')));
+  $nextcloud_user = trim((string)($_POST['nc_nextcloud_user'] ?? ($credentials['nextcloud_user'] ?? '')));
+  $submitted_nc_password = (string)($_POST['nc_nextcloud_password'] ?? '');
+  $nextcloud_password = $submitted_nc_password !== '' ? $submitted_nc_password : (string)($credentials['nextcloud_password'] ?? '');
+
+  $has_any_nextcloud = $nextcloud_input !== '' || $nextcloud_user !== '' || $nextcloud_password !== '';
+  if ($has_any_nextcloud)
+  {
+    $missing = array();
+    if ($nextcloud_input === '') $missing[] = 'nc_nextcloud_url';
+    if ($nextcloud_user === '') $missing[] = 'nc_nextcloud_user';
+    if ($nextcloud_password === '') $missing[] = 'nc_nextcloud_password';
+    if ($missing)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Die WebDAV-Daten sind unvollständig. Adresse, Benutzer und Passwort werden gemeinsam benötigt.',
+        $missing,
+        'Nextcloud / WebDAV'
+      );
+    }
+
+    try
+    {
+      $candidate_urls = bratonien_tools_nc_wizard_candidate_urls($nextcloud_input);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail($e->getMessage(), array('nc_nextcloud_url'), 'Nextcloud / WebDAV');
+    }
+
+    $nextcloud_url = '';
+    $last_probe = null;
+    $last_status_url = '';
+    foreach ($candidate_urls as $candidate_url)
+    {
+      $status_url = $candidate_url.'/status.php';
+      $probe = bratonien_tools_nc_edit_probe($status_url);
+      $last_probe = $probe;
+      $last_status_url = $status_url;
+
+      if (!$probe['ok'] || $probe['http'] < 200 || $probe['http'] >= 300)
+      {
+        continue;
+      }
+
+      $status = json_decode($probe['body'], true);
+      if (!is_array($status) || empty($status['installed']))
+      {
+        continue;
+      }
+
+      $nextcloud_url = $candidate_url;
+      break;
+    }
+
+    if ($nextcloud_url === '')
+    {
+      $attempts = array();
+      foreach ($candidate_urls as $candidate_url)
+      {
+        $attempts[] = $candidate_url.'/status.php';
+      }
+      if (is_array($last_probe) && !$last_probe['ok'])
+      {
+        $technical = $last_probe['errno'] >= 0
+          ? 'cURL '.$last_probe['errno'].($last_probe['error'] !== '' ? ': '.$last_probe['error'] : '')
+          : $last_probe['error'];
+        bratonien_tools_nc_edit_fail(
+          'Die Nextcloud-Adresse ist vom Piwigo-Server aus nicht erreichbar. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+          array('nc_nextcloud_url'),
+          'Nextcloud / WebDAV – Erreichbarkeit',
+          $technical.' · Geprüft: '.implode(' ; ', $attempts)
+        );
+      }
+
+      bratonien_tools_nc_edit_fail(
+        'Unter der angegebenen Adresse wurde keine erreichbare installierte Nextcloud gefunden. Ohne angegebenes Protokoll wurden HTTPS und HTTP geprüft.',
+        array('nc_nextcloud_url'),
+        'Nextcloud / WebDAV – Erkennung',
+        'Geprüft: '.implode(' ; ', $attempts).($last_probe ? ' · Letzter HTTP-Status: '.$last_probe['http'] : '')
+      );
+    }
+
+    $_POST['nc_nextcloud_url'] = $nextcloud_url;
+
+    $user_url = $nextcloud_url.'/ocs/v2.php/cloud/user?format=json';
+    $user_probe = bratonien_tools_nc_edit_probe($user_url, $nextcloud_user, $nextcloud_password, array('OCS-APIRequest: true'));
+    if (!$user_probe['ok'])
+    {
+      $technical = $user_probe['errno'] >= 0
+        ? 'cURL '.$user_probe['errno'].($user_probe['error'] !== '' ? ': '.$user_probe['error'] : '')
+        : $user_probe['error'];
+      bratonien_tools_nc_edit_fail(
+        'Die Nextcloud-Anmeldung konnte technisch nicht geprüft werden.',
+        array('nc_nextcloud_url','nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        $technical.' · Ziel: '.$user_url
+      );
+    }
+    if ($user_probe['http'] === 401 || $user_probe['http'] === 403)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud hat Benutzername oder Passwort abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http']
+      );
+    }
+    if ($user_probe['http'] < 200 || $user_probe['http'] >= 300)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud ist erreichbar, aber die Benutzerprüfung wurde vom Server abgelehnt.',
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung',
+        'HTTP '.$user_probe['http'].' · Ziel: '.$user_url
+      );
+    }
+    try
+    {
+      bratonien_tools_nc_wizard_ocs_data($user_probe['body']);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Nextcloud antwortet auf die Benutzerprüfung, die Antwort ist aber nicht gültig: '.$e->getMessage(),
+        array('nc_nextcloud_user','nc_nextcloud_password'),
+        'Nextcloud / WebDAV – Anmeldung'
+      );
+    }
+  }
+
+  $api_key_id = trim((string)($_POST['nc_connection_api_key_id'] ?? ($credentials['api_key_id'] ?? '')));
+  $submitted_api_secret = trim((string)($_POST['nc_connection_api_key_secret'] ?? ''));
+  $api_key_secret = $submitted_api_secret !== '' ? $submitted_api_secret : trim((string)($credentials['api_key_secret'] ?? ''));
+  if (($api_key_id === '') !== ($api_key_secret === ''))
+  {
+    $missing = $api_key_id === '' ? array('nc_connection_api_key_id') : array('nc_connection_api_key_secret');
+    bratonien_tools_nc_edit_fail(
+      'API-Schlüssel-ID und API-Geheimnis müssen gemeinsam vollständig sein.',
+      $missing,
+      'Piwigo API'
+    );
+  }
+  if ($api_key_id !== '')
+  {
+    try
+    {
+      bratonien_tools_nc_connector_validate_scoped_api($api_key_id, $api_key_secret);
+    }
+    catch (Throwable $e)
+    {
+      bratonien_tools_nc_edit_fail(
+        'Der Piwigo-API-Zugang konnte nicht bestätigt werden: '.$e->getMessage(),
+        array('nc_connection_api_key_id','nc_connection_api_key_secret'),
+        'Piwigo API'
+      );
+    }
+  }
+
+  $result = bratonien_tools_nc_connector_update_local_friendly();
+  bratonien_tools_nc_edit_json(200, array(
+    'ok'=>true,
+    'message'=>(string)($result['message'] ?? 'Verbindung wurde gespeichert.'),
+    'fields'=>array(),
+  ));
+}
+catch (Throwable $e)
+{
+  $message = trim($e->getMessage());
+  if ($message === '') $message = 'Die Verbindung konnte nicht gespeichert werden.';
+
+  $fields = array();
+  $stage = 'Verbindung';
+  $add = function($name) use (&$fields)
+  {
+    if (!in_array($name, $fields, true)) $fields[] = $name;
+  };
+
+  if (stripos($message, 'Name') !== false && stripos($message, 'Datenbankname') === false) $add('connection_name');
+  if (stripos($message, 'Datenbank-Server') !== false) { $add('nc_host'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbank-Port') !== false) { $add('nc_port'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankname') !== false) { $add('nc_database'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Reader-Benutzer') !== false) { $add('nc_user'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Datenbankpasswort') !== false) { $add('nc_db_password'); $stage = 'Legacy-Datenbank'; }
+  if (stripos($message, 'Storage-ID') !== false) { $add('nc_storage_id[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'lokaler Pfad') !== false || stripos($message, 'Speicherort') !== false) { $add('nc_local_mount[]'); $stage = 'Speicherorte'; }
+  if (stripos($message, 'Galerieordner') !== false) { $add('nc_gallery_root'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Source-View') !== false) { $add('nc_source_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+  if (stripos($message, 'Datenbankansichten') !== false || stripos($message, 'Activity-View') !== false) { $add('nc_activity_view'); $stage = 'Erweiterte Legacy-Einstellungen'; }
+
+  if (stripos($message, 'Nextcloud') !== false)
+  {
+    $stage = 'Nextcloud / WebDAV';
+    if (stripos($message, 'Adresse') !== false) $add('nc_nextcloud_url');
+    if (stripos($message, 'Benutzer') !== false) $add('nc_nextcloud_user');
+    if (stripos($message, 'Passwort') !== false) $add('nc_nextcloud_password');
+  }
+  if (stripos($message, 'API') !== false)
+  {
+    $stage = 'Piwigo API';
+    $add('nc_connection_api_key_id');
+    $add('nc_connection_api_key_secret');
+  }
+
+  bratonien_tools_nc_edit_fail(
+    $message,
+    $fields,
+    $stage,
+    'Interne Prüfung: '.get_class($e)
+  );
+}
--- a/nc-connector-status.php
+++ b/nc-connector-status.php
@@ -24,7 +24,6 @@ if (!function_exists('is_admin') || !is_admin())
  exit;
 }

-$requested_connection_id = isset($_GET['connection_id']) ? max(0, (int)$_GET['connection_id']) : 0;
 $dir = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-connector-status';
 $latest = array(
  'state'=>'idle',
@@ -42,16 +41,11 @@ $latest = array(
  'route_timestamp'=>0,
  'route_time_label'=>'Nicht verfügbar',
  'route_detail'=>'',
-  'connection_id'=>$requested_connection_id,
 );

 if (is_dir($dir))
 {
-  $files = $requested_connection_id > 0
-    ? array($dir.'/connection-'.$requested_connection_id.'.json')
-    : (glob($dir.'/connection-*.json') ?: array());
-
-  foreach ($files as $file)
+  foreach (glob($dir.'/connection-*.json') ?: array() as $file)
  {
    if (!is_readable($file))
    {
@@ -69,58 +63,60 @@ if (is_dir($dir))
    }
  }

-  if ($requested_connection_id === 0)
+  $route_file = $dir.'/route-status.json';
+  if (is_readable($route_file))
  {
-    $route_file = $dir.'/route-status.json';
-    if (is_readable($route_file))
+    $route = json_decode((string)@file_get_contents($route_file), true);
+    if (is_array($route))
    {
-      $route = json_decode((string)@file_get_contents($route_file), true);
-      if (is_array($route))
+      $route_name = (string)($route['route'] ?? '');
+      $route_timestamp = (int)($route['timestamp'] ?? 0);
+      $route_label = (string)($route['label'] ?? '');
+
+      if ($route_name === 'webdav')
      {
-        $route_name = (string)($route['route'] ?? '');
-        $route_timestamp = (int)($route['timestamp'] ?? 0);
-        $route_label = (string)($route['label'] ?? '');
-
-        if ($route_name === 'webdav')
-        {
-          $route_label = 'WEBDAV PRIMÄR';
-        }
-        elseif ($route_name === 'legacy_fallback')
-        {
-          $route_label = 'LEGACY-FALLBACK AKTIV';
-        }
-        elseif ($route_name === 'failed')
-        {
-          $route_label = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
-        }
-        elseif ($route_label === '')
-        {
-          $route_label = 'UNBEKANNTER DATENWEG';
-        }
-
-        $route_detail = trim((string)($route['detail'] ?? ''));
-        $latest['route'] = $route_name;
-        $latest['route_label'] = $route_label;
-        $latest['route_timestamp'] = $route_timestamp;
-        $latest['route_time_label'] = $route_timestamp > 0 ? date('d.m.Y H:i:s', $route_timestamp) : 'Nicht verfügbar';
-        $latest['route_detail'] = $route_detail;
-
-        $base_message = trim((string)($latest['message'] ?? ''));
-        $message_parts = array($route_label);
-        if ($route_name !== 'webdav' && $route_detail !== '')
-        {
-          $message_parts[] = $route_detail;
-        }
-        if ($base_message !== '')
-        {
-          $message_parts[] = $base_message;
-        }
-        $latest['message'] = implode(' · ', $message_parts);
+        $route_label = 'WEBDAV PRIMÄR';
      }
+      elseif ($route_name === 'legacy_fallback')
+      {
+        $route_label = 'LEGACY-FALLBACK AKTIV';
+      }
+      elseif ($route_name === 'failed')
+      {
+        $route_label = 'FEHLER - KEIN ERFOLGREICHER DATENWEG';
+      }
+      elseif ($route_label === '')
+      {
+        $route_label = 'UNBEKANNTER DATENWEG';
+      }
+
+      $route_detail = trim((string)($route['detail'] ?? ''));
+      $latest['route'] = $route_name;
+      $latest['route_label'] = $route_label;
+      $latest['route_timestamp'] = $route_timestamp;
+      $latest['route_time_label'] = $route_timestamp > 0 ? date('d.m.Y H:i:s', $route_timestamp) : 'Nicht verfügbar';
+      $latest['route_detail'] = $route_detail;
+
+      $base_message = trim((string)($latest['message'] ?? ''));
+      $message_parts = array($route_label);
+      if ($route_name !== 'webdav' && $route_detail !== '')
+      {
+        $message_parts[] = $route_detail;
+      }
+      if ($base_message !== '')
+      {
+        $message_parts[] = $base_message;
+      }
+      $latest['message'] = implode(' · ', $message_parts);
    }
  }
 }

+if ((int)$latest['timestamp'] > 0)
+{
+  $latest['last_run_label'] = date('d.m.Y H:i:s', (int)$latest['timestamp']);
+}
+
 $system_file = BRATONIEN_TOOLS_PATH.'include/nc_connector_system.inc.php';
 if (is_readable($system_file))
 {
@@ -133,27 +129,4 @@ if (is_readable($system_file))
  }
 }

-$scheduler_file = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-connector-scheduler/state.json';
-if ($requested_connection_id > 0 && is_readable($scheduler_file))
-{
-  $scheduler = json_decode((string)@file_get_contents($scheduler_file), true);
-  if (
-    is_array($scheduler)
-    && (int)($scheduler['connection_id'] ?? 0) === $requested_connection_id
-    && in_array((string)($scheduler['state'] ?? ''), array('queued','running'), true)
-    && (int)($scheduler['timestamp'] ?? 0) >= (int)($latest['timestamp'] ?? 0)
-  )
-  {
-    $latest['state'] = (string)$scheduler['state'];
-    $latest['message'] = (string)($scheduler['message'] ?? 'NC-Abgleich läuft.');
-    $latest['timestamp'] = (int)($scheduler['timestamp'] ?? time());
-    $latest['error_detail'] = '';
-  }
-}
-
-if ((int)$latest['timestamp'] > 0)
-{
-  $latest['last_run_label'] = date('d.m.Y H:i:s', (int)$latest['timestamp']);
-}
-
 echo json_encode($latest, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
--- a/1
+++ b/1
@@ -0,0 +1 @@
+x
--- a/noop2-remove-marker.txt
+++ b/noop2-remove-marker.txt
@@ -0,0 +1 @@
+stale branch only
--- a/runtime/build-webdav-media.sh
+++ b/runtime/build-webdav-media.sh
@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-set -Eeuo pipefail
-
-# Seit 0.9.7.20 greift der NC Connector nicht mehr in Piwigos Bild-/Derivatlogik ein.
-# Der Shadowtree dient nur der Piwigo-Synchronisation; die Bild-URL wird zur Laufzeit
-# ueber den bestehenden WebDAV-URL-Hook auf Nextcloud aufgeloest.
-exit 0
--- a/runtime/cleanup-missing-webdav-images.php
+++ b/runtime/cleanup-missing-webdav-images.php
@@ -1,142 +0,0 @@
-#!/usr/bin/env php
-<?php
-if (PHP_SAPI !== 'cli')
-{
-  fwrite(STDERR, "CLI only\n");
-  exit(1);
-}
-
-$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
@@ -47,31 +47,24 @@ function bratonien_cleanup_tree($path, $allowed_root)
  @rmdir($path);
 }

-function bratonien_connection_id_from_owned_path($path)
+function bratonien_webdav_site_images($site_id)
 {
-  $path = (string)$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)
+  $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))
  {
-    if (preg_match($pattern, $path, $match)) return (int)$match[1];
+    $row['id'] = (int)$row['id'];
+    $rows[$row['id']] = $row;
  }
-  return 0;
-}
-
-function bratonien_connection_id_from_site_url($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;
+  return $rows;
 }

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

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

-  foreach ($stale_by_connection as $connection_id=>$images)
+  $removed_sites = 0;
+  $removed_images = 0;
+  while ($site = 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];
+    if ($connection_id < 1 || isset($active[$connection_id])) continue;
+
+    $images = bratonien_webdav_site_images($site_id);
    foreach ($images as $row)
    {
      try
@@ -121,60 +114,48 @@ try
      }
    }

-    delete_elements(array_map('intval', array_keys($images)), false);
-    $removed_images += count($images);
-    echo 'NC WebDAV: entferne '.count($images).' verwaiste Bilder der gelöschten Verbindung '.$connection_id.".\n";
-  }
+    delete_site($site_id);

-  $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'=>$connection_id);
-  }
+    if ($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);
+      }
+    }

-  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";
-  }
+    $removed_images += count($images);
+    echo 'NC WebDAV: entferne verwaiste Piwigo-Site '.$site_id.' für gelöschte Verbindung '.$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;
+    $gallery_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-gallery';
+    $source_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-source';
+    $preview_root = PHPWG_ROOT_PATH.'_data/bratonien-tools/nc-webdav-preview';
    bratonien_cleanup_tree($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, $preview_root);
-    bratonien_cleanup_tree($legacy_root.'/bratonien-webdav-'.$connection_id, $legacy_root);
+
+    $state_root = '/var/lib/bratonien-tools/nc-connector';
    bratonien_cleanup_tree($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 || $removed_images > 0)
+  if ($removed_sites > 0)
  {
-    update_category('all');
    invalidate_user_cache(true);
  }

--- a/runtime/lib/build-webdav-derivatives.php
+++ b/runtime/lib/build-webdav-derivatives.php
--- a/runtime/lib/build_webdav_placeholder_source.py
+++ b/runtime/lib/build_webdav_placeholder_source.py
@@ -1,13 +1,9 @@
 #!/usr/bin/env python3
 """Build a placeholder-backed local source tree from Nextcloud WebDAV.

-This creates only tiny placeholder files plus a metadata mapping; no Nextcloud
-original media is stored locally. The authenticated Nextcloud user is never used
-as an album name.
-
-Each placeholder carries the original image dimensions. Dimensions are read
-from Nextcloud metadata first. If those metadata are unavailable, only the
-beginning of the original file is read through WebDAV and parsed locally.
+This is intentionally additive: it does not replace the existing local-storage
+connector path. It creates only tiny placeholder files plus a metadata mapping;
+no Nextcloud original media is downloaded.
 """

 from __future__ import annotations
@@ -18,7 +14,6 @@ import getpass
 import json
 import os
 import shutil
-import socket
 import ssl
 import sys
 import tempfile
@@ -26,15 +21,14 @@ import urllib.error
 import urllib.parse
 import urllib.request
 import xml.etree.ElementTree as ET
-from contextlib import contextmanager
 from pathlib import Path, PurePosixPath

 DAV = "DAV:"
 OC = "http://owncloud.org/ns"
-NC = "http://nextcloud.org/ns"
 SUPPORTED_IMAGE_EXTENSIONS = {".jpg", ".jpeg", ".png", ".gif", ".webp"}
+# 1x1 transparent GIF, 34 bytes. The filename keeps the remote extension;
+# the placeholder exists only so Piwigo can discover the logical image entry.
 PLACEHOLDER = base64.b64decode("R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==")
-DIMENSION_PROBE_BYTES = 4 * 1024 * 1024


 def fail(message: str) -> None:
@@ -60,132 +54,9 @@ def safe_local_name(name: str) -> str:
    return name


-def parse_dimensions(prop: ET.Element) -> tuple[int, int]:
-    for property_name in ("file-metadata-size", "metadata-photos-size"):
-        raw = prop.findtext(f"{{{NC}}}{property_name}", default="").strip()
-        if not raw:
-            continue
-        try:
-            decoded = json.loads(raw)
-        except (TypeError, ValueError, json.JSONDecodeError):
-            continue
-        if isinstance(decoded, dict) and isinstance(decoded.get("value"), dict):
-            decoded = decoded["value"]
-        if not isinstance(decoded, dict):
-            continue
-        try:
-            width = int(decoded.get("width", 0) or 0)
-            height = int(decoded.get("height", 0) or 0)
-        except (TypeError, ValueError):
-            continue
-        if width > 0 and height > 0:
-            return width, height
-    return 0, 0
-
-
-def parse_image_header_dimensions(data: bytes) -> tuple[int, int]:
-    if len(data) >= 24 and data.startswith(b"\x89PNG\r\n\x1a\n") and data[12:16] == b"IHDR":
-        return int.from_bytes(data[16:20], "big"), int.from_bytes(data[20:24], "big")
-
-    if len(data) >= 10 and data[:6] in (b"GIF87a", b"GIF89a"):
-        return int.from_bytes(data[6:8], "little"), int.from_bytes(data[8:10], "little")
-
-    if len(data) >= 12 and data[:4] == b"RIFF" and data[8:12] == b"WEBP":
-        chunk = data[12:16]
-        if chunk == b"VP8X" and len(data) >= 30:
-            width = 1 + int.from_bytes(data[24:27], "little")
-            height = 1 + int.from_bytes(data[27:30], "little")
-            return width, height
-        if chunk == b"VP8 " and len(data) >= 30:
-            payload = 20
-            if data[payload + 3:payload + 6] == b"\x9d\x01\x2a":
-                width = int.from_bytes(data[payload + 6:payload + 8], "little") & 0x3FFF
-                height = int.from_bytes(data[payload + 8:payload + 10], "little") & 0x3FFF
-                return width, height
-        if chunk == b"VP8L" and len(data) >= 25 and data[20] == 0x2F:
-            b1, b2, b3, b4 = data[21:25]
-            width = 1 + b1 + ((b2 & 0x3F) << 8)
-            height = 1 + ((b2 & 0xC0) >> 6) + (b3 << 2) + ((b4 & 0x0F) << 10)
-            return width, height
-
-    if len(data) >= 4 and data[:2] == b"\xff\xd8":
-        sof_markers = {
-            0xC0, 0xC1, 0xC2, 0xC3,
-            0xC5, 0xC6, 0xC7,
-            0xC9, 0xCA, 0xCB,
-            0xCD, 0xCE, 0xCF,
-        }
-        pos = 2
-        while pos + 4 <= len(data):
-            if data[pos] != 0xFF:
-                pos += 1
-                continue
-            while pos < len(data) and data[pos] == 0xFF:
-                pos += 1
-            if pos >= len(data):
-                break
-            marker = data[pos]
-            pos += 1
-            if marker in (0xD8, 0xD9) or 0xD0 <= marker <= 0xD7:
-                continue
-            if marker == 0xDA:
-                break
-            if pos + 2 > len(data):
-                break
-            segment_length = int.from_bytes(data[pos:pos + 2], "big")
-            if segment_length < 2:
-                break
-            if marker in sof_markers:
-                if pos + 7 > len(data):
-                    break
-                height = int.from_bytes(data[pos + 3:pos + 5], "big")
-                width = int.from_bytes(data[pos + 5:pos + 7], "big")
-                return width, height
-            pos += segment_length
-
-    return 0, 0
-
-
-def placeholder_bytes(width: int, height: int) -> bytes:
-    if not (1 <= width <= 65535 and 1 <= height <= 65535):
-        fail(f"unsupported image dimensions for placeholder: {width}x{height}")
-    data = bytearray(PLACEHOLDER)
-    data[6:8] = width.to_bytes(2, "little")
-    data[8:10] = height.to_bytes(2, "little")
-    return bytes(data)
-
-
-@contextmanager
-def pinned_resolution(host: str, ip: str):
-    host = host.strip("[]").lower()
-    ip = ip.strip("[]")
-    if not host or not ip or host == ip:
-        yield
-        return
-
-    original = socket.getaddrinfo
-
-    def resolve(name, port, family=0, type=0, proto=0, flags=0):
-        normalized = str(name).strip("[]").lower()
-        if normalized == host:
-            return original(ip, port, family, type, proto, flags)
-        return original(name, port, family, type, proto, flags)
-
-    socket.getaddrinfo = resolve
-    try:
-        yield
-    finally:
-        socket.getaddrinfo = original
-
-
 class WebDavClient:
-    def __init__(self, base_url: str, user: str, password: str, timeout: int = 30, connect_ip: str = "") -> None:
+    def __init__(self, base_url: str, user: str, password: str, timeout: int = 30) -> None:
        self.base_url = base_url.rstrip("/")
-        parsed = urllib.parse.urlparse(self.base_url)
-        if parsed.scheme not in {"http", "https"} or not parsed.hostname:
-            fail("Nextcloud base URL must use HTTP or HTTPS and contain a host")
-        self.host = parsed.hostname.strip("[]")
-        self.connect_ip = connect_ip.strip("[]") or self.host
        self.user = user
        self.password = password
        self.timeout = timeout
@@ -193,60 +64,31 @@ class WebDavClient:
        self.auth_header = f"Basic {token}"
        self.context = ssl.create_default_context()

-    def file_url(self, relative: str) -> str:
+    def collection_url(self, relative: str) -> str:
        user = urllib.parse.quote(self.user, safe="")
        suffix = quote_path(relative)
-        return f"{self.base_url}/remote.php/dav/files/{user}/{suffix}"
-
-    def collection_url(self, relative: str) -> str:
-        url = self.file_url(relative)
-        if not url.endswith("/"):
-            url += "/"
+        url = f"{self.base_url}/remote.php/dav/files/{user}/"
+        if suffix:
+            url += suffix + "/"
        return url

-    def probe_dimensions(self, relative: str) -> tuple[int, int]:
-        request = urllib.request.Request(self.file_url(relative), method="GET")
-        request.add_header("Authorization", self.auth_header)
-        request.add_header("Range", f"bytes=0-{DIMENSION_PROBE_BYTES - 1}")
-        try:
-            with pinned_resolution(self.host, self.connect_ip):
-                with urllib.request.urlopen(request, timeout=self.timeout, context=self.context) as response:
-                    if response.status not in (200, 206):
-                        fail(f"Nextcloud image header returned HTTP {response.status}")
-                    data = response.read(DIMENSION_PROBE_BYTES)
-        except urllib.error.HTTPError as error:
-            if error.code in {401, 403}:
-                fail("Nextcloud rejected the WebDAV credentials or file access")
-            fail(f"Nextcloud image header request failed with HTTP {error.code}")
-        except urllib.error.URLError as error:
-            fail(f"Nextcloud WebDAV is unreachable while reading image dimensions: {error.reason}")
-
-        width, height = parse_image_header_dimensions(data)
-        if width < 1 or height < 1:
-            fail(f"original image dimensions could not be read from Nextcloud file header: {relative}")
-        return width, height
-
    def list_collection(self, relative: str) -> tuple[dict[str, object], list[dict[str, object]]]:
        relative = validate_relative(relative)
        url = self.collection_url(relative)
        body = (
            '<?xml version="1.0"?>'
-            '<d:propfind xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" '
-            'xmlns:nc="http://nextcloud.org/ns">'
+            '<d:propfind xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns">'
            '<d:prop><d:displayname/><d:resourcetype/><d:getcontenttype/>'
-            '<d:getcontentlength/><d:getetag/><oc:fileid/>'
-            '<nc:file-metadata-size/><nc:metadata-photos-size/>'
-            '</d:prop></d:propfind>'
+            '<d:getcontentlength/><d:getetag/><oc:fileid/></d:prop></d:propfind>'
        ).encode("utf-8")
        request = urllib.request.Request(url, data=body, method="PROPFIND")
        request.add_header("Authorization", self.auth_header)
        request.add_header("Depth", "1")
        request.add_header("Content-Type", "application/xml; charset=utf-8")
        try:
-            with pinned_resolution(self.host, self.connect_ip):
-                with urllib.request.urlopen(request, timeout=self.timeout, context=self.context) as response:
-                    status = response.status
-                    payload = response.read()
+            with urllib.request.urlopen(request, timeout=self.timeout, context=self.context) as response:
+                status = response.status
+                payload = response.read()
        except urllib.error.HTTPError as error:
            if error.code in {401, 403}:
                fail("Nextcloud rejected the WebDAV credentials or directory access")
@@ -256,14 +98,14 @@ class WebDavClient:
        if status != 207:
            fail(f"Nextcloud PROPFIND returned HTTP {status}")

-        base_path = urllib.parse.unquote(urllib.parse.urlparse(url).path).rstrip("/")
-        current: dict[str, object] | None = None
-        children: list[dict[str, object]] = []
        try:
            root = ET.fromstring(payload)
        except ET.ParseError as error:
            raise RuntimeError("Nextcloud returned invalid WebDAV XML") from error

+        base_path = urllib.parse.unquote(urllib.parse.urlparse(url).path).rstrip("/")
+        current: dict[str, object] | None = None
+        children: list[dict[str, object]] = []
        for response in root.findall(f"{{{DAV}}}response"):
            href = response.findtext(f"{{{DAV}}}href", default="")
            href_path = urllib.parse.unquote(urllib.parse.urlparse(href).path).rstrip("/")
@@ -280,7 +122,6 @@ class WebDavClient:
            fileid_text = prop.findtext(f"{{{OC}}}fileid", default="").strip()
            resource_type = prop.find(f"{{{DAV}}}resourcetype")
            is_dir = resource_type is not None and resource_type.find(f"{{{DAV}}}collection") is not None
-            width, height = parse_dimensions(prop)
            item = {
                "display_name": display,
                "fileid": int(fileid_text) if fileid_text.isdigit() else 0,
@@ -288,8 +129,6 @@ class WebDavClient:
                "content_type": prop.findtext(f"{{{DAV}}}getcontenttype", default=""),
                "size": int(prop.findtext(f"{{{DAV}}}getcontentlength", default="0") or 0),
                "etag": prop.findtext(f"{{{DAV}}}getetag", default="").strip('"'),
-                "width": width,
-                "height": height,
            }
            if href_path == base_path:
                current = item
@@ -301,17 +140,24 @@ class WebDavClient:
        return current, children


-def write_placeholder(target: Path, width: int, height: int) -> None:
+def link_placeholder(seed: Path, target: Path) -> None:
    target.parent.mkdir(parents=True, exist_ok=True)
-    target.write_bytes(placeholder_bytes(width, height))
-    os.chmod(target, 0o644)
+    try:
+        os.link(seed, target)
+    except OSError:
+        target.write_bytes(PLACEHOLDER)


-def build_root(client: WebDavClient, remote_root: str, local_root: Path, mapping: dict[str, dict[str, object]]) -> tuple[int, int, int, int]:
+def build_root(
+    client: WebDavClient,
+    remote_root: str,
+    local_root: Path,
+    seed: Path,
+    mapping: dict[str, dict[str, object]],
+) -> tuple[int, int, int]:
    files = 0
    folders = 0
    skipped = 0
-    probed = 0
    stack: list[tuple[str, Path]] = [(validate_relative(remote_root), local_root)]
    visited: set[str] = set()

@@ -341,16 +187,7 @@ def build_root(client: WebDavClient, remote_root: str, local_root: Path, mapping
            if extension not in SUPPORTED_IMAGE_EXTENSIONS:
                skipped += 1
                continue
-
-            width = int(child.get("width", 0) or 0)
-            height = int(child.get("height", 0) or 0)
-            dimension_source = "metadata"
-            if width < 1 or height < 1:
-                width, height = client.probe_dimensions(child_remote)
-                dimension_source = "header"
-                probed += 1
-
-            write_placeholder(child_local, width, height)
+            link_placeholder(seed, child_local)
            files += 1
            mapping[str(child_local)] = {
                "kind": "file",
@@ -360,11 +197,8 @@ def build_root(client: WebDavClient, remote_root: str, local_root: Path, mapping
                "content_type": str(child.get("content_type", "")),
                "size": int(child.get("size", 0)),
                "etag": str(child.get("etag", "")),
-                "width": width,
-                "height": height,
-                "dimension_source": dimension_source,
            }
-    return files, folders, skipped, probed
+    return files, folders, skipped


 def atomic_json(path: Path, payload: object) -> None:
@@ -387,7 +221,6 @@ def atomic_text(path: Path, text: str) -> None:
 def main() -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument("--base-url", required=True)
-    parser.add_argument("--connect-ip", default="", help="IP address used for the TCP connection while preserving the URL host for HTTP Host and TLS SNI")
    parser.add_argument("--user", required=True)
    parser.add_argument("--password-file", type=Path)
    parser.add_argument("--root", action="append", required=True, help="WebDAV path relative to the authenticated user's files root")
@@ -408,46 +241,34 @@ def main() -> int:
        source_dir = args.source_dir.resolve()
        staging = source_dir.with_name(f".{source_dir.name}.next")
        previous = source_dir.with_name(f".{source_dir.name}.previous")
+        seed = source_dir.parent / ".bratonien-webdav-placeholder.gif"
        source_dir.parent.mkdir(parents=True, exist_ok=True)
+        seed.write_bytes(PLACEHOLDER)
+        os.chmod(seed, 0o644)
        if staging.exists():
            shutil.rmtree(staging)
        staging.mkdir(parents=True)

-        client = WebDavClient(args.base_url, args.user, password, max(1, args.timeout), args.connect_ip)
+        client = WebDavClient(args.base_url, args.user, password, max(1, args.timeout))
        mapping: dict[str, dict[str, object]] = {}
        manifest: list[str] = []
-        total_files = total_folders = total_skipped = total_probed = 0
-        used_fileids: set[int] = set()
+        total_files = total_folders = total_skipped = 0
+        used_names: set[str] = set()

        for remote_root_raw in args.root:
            remote_root = validate_relative(remote_root_raw)
-            current, root_children = client.list_collection(remote_root)
+            current, _ = client.list_collection(remote_root)
            fileid = int(current["fileid"])
-            if fileid in used_fileids:
-                fail(f"duplicate selected Nextcloud root fileid: {fileid}")
-            used_fileids.add(fileid)
+            display = str(current.get("display_name", "")).strip() or (PurePosixPath(remote_root).name if remote_root else args.user)
            local_name = f"root-{fileid}"
+            if local_name in used_names:
+                fail(f"duplicate selected Nextcloud root fileid: {fileid}")
+            used_names.add(local_name)
            local_root = staging / local_name
-            files, folders, skipped, probed = build_root(client, remote_root, local_root, mapping)
+            files, folders, skipped = build_root(client, remote_root, local_root, seed, mapping)
            total_files += files
            total_folders += folders
            total_skipped += skipped
-            total_probed += probed
-
-            if remote_root == "":
-                for child in sorted(root_children, key=lambda item: str(item.get("display_name", "")).casefold()):
-                    name = safe_local_name(str(child.get("display_name", "")))
-                    child_fileid = int(child.get("fileid", 0))
-                    if child_fileid < 1:
-                        fail(f"Nextcloud returned no stable fileid for root child {name!r}")
-                    child_path = source_dir / local_name / name
-                    if bool(child.get("is_dir")):
-                        manifest.append(f"webdav:{child_fileid}\tfolder\t{name}\t{child_path}")
-                    elif Path(name).suffix.lower() in SUPPORTED_IMAGE_EXTENSIONS:
-                        manifest.append(f"webdav:{child_fileid}\tfile\t{name}\t{child_path}")
-                continue
-
-            display = str(current.get("display_name", "")).strip() or PurePosixPath(remote_root).name
            manifest.append(f"webdav:{fileid}\tfolder\t{display}\t{source_dir / local_name}")

        if previous.exists():
@@ -474,9 +295,8 @@ def main() -> int:

        atomic_text(args.manifest, "\n".join(manifest) + "\n")
        atomic_json(args.mapping, {
-            "version": 3,
+            "version": 1,
            "base_url": args.base_url.rstrip("/"),
-            "connect_ip": client.connect_ip,
            "user": args.user,
            "files": final_mapping,
        })
@@ -485,8 +305,6 @@ def main() -> int:
            "files": total_files,
            "folders": total_folders,
            "skipped": total_skipped,
-            "dimension_header_probes": total_probed,
-            "connect_ip": client.connect_ip,
            "source_dir": str(source_dir),
            "manifest": str(args.manifest),
            "mapping": str(args.mapping),
--- a/runtime/lib/piwigo-sync.php
+++ b/runtime/lib/piwigo-sync.php
--- a/runtime/lib/precache-webdav-previews.php
+++ b/runtime/lib/precache-webdav-previews.php
@@ -6,8 +6,6 @@ if (PHP_SAPI !== 'cli')
  exit(1);
 }

-require_once(dirname(__DIR__, 2).'/include/nc_transport.inc.php');
-
 const BRATONIEN_WEBDAV_PREVIEW_VERSION = 2;
 const BRATONIEN_WEBDAV_PREVIEW_MAX_EDGE = 4096;
 const BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY = 88;
@@ -26,7 +24,7 @@ function quote_webdav_path($path)
 function fetch_remote_blob($url, $user, $password)
 {
  $ch = curl_init($url);
-  $options = array(
+  curl_setopt_array($ch, array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_FOLLOWLOCATION => false,
    CURLOPT_CONNECTTIMEOUT => 10,
@@ -34,10 +32,8 @@ function fetch_remote_blob($url, $user, $password)
    CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
    CURLOPT_USERPWD => $user.':'.$password,
    CURLOPT_FAILONERROR => false,
-    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.7.16',
-  );
-  bratonien_tools_nc_transport_apply_curl($options, $url);
-  curl_setopt_array($ch, $options);
+    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.6.1',
+  ));
  $body = curl_exec($ch);
  $errno = curl_errno($ch);
  $error = curl_error($ch);
@@ -52,11 +48,12 @@ 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'] ?? ''));
-  $extension = strtolower(pathinfo($path, PATHINFO_EXTENSION));
-  if ($extension === 'png') return 'png';
-  if ($extension === 'gif') return 'gif';
-  if ($extension === 'webp') return 'webp';
+  if ($content_type === 'image/png' || preg_match('/\.png$/', $path))
+  {
+    return 'png';
+  }
  return 'jpg';
 }

@@ -67,7 +64,7 @@ function preview_target_for_entry($cache_dir, $key, array $entry)

 function remove_other_preview_format($cache_dir, $key, $keep_target)
 {
-  foreach (array('jpg', 'png', 'gif', 'webp') as $ext)
+  foreach (array('jpg', 'png', 'webp') as $ext)
  {
    $candidate = $cache_dir.'/'.$key.'.'.$ext;
    if ($candidate !== $keep_target && is_file($candidate)) @unlink($candidate);
@@ -89,19 +86,13 @@ function write_preview_imagick($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);
      $image->setImageCompressionQuality(BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
@@ -136,7 +127,7 @@ function write_preview_gd($blob, $target, $extension)

    try
    {
-      if (in_array($extension, array('png', 'gif', 'webp'), true))
+      if ($extension === 'png')
      {
        imagealphablending($preview, false);
        imagesavealpha($preview, true);
@@ -154,12 +145,10 @@ function write_preview_gd($blob, $target, $extension)
        fail_preview('GD konnte das Preview nicht skalieren.');
      }

-      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.');
+      $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.');
    }
    finally
    {
@@ -175,7 +164,7 @@ function write_preview_gd($blob, $target, $extension)
 function write_preview($blob, $target, $extension)
 {
  $dir = dirname($target);
-  if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');
+  if (!is_dir($dir) && !mkdir($dir, 0755, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');

  if (class_exists('Imagick'))
  {
@@ -197,48 +186,7 @@ function write_preview($blob, $target, $extension)
    @unlink($target);
    fail_preview('Das erzeugte Preview ist ungültig.');
  }
-  @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;
+  @chmod($target, 0644);
 }

 try
@@ -260,8 +208,8 @@ 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, 0775, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
-  @chmod($cache_dir, 2775);
+  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);

  $state_file = $cache_dir.'/state.json';
  $old_state = array();
@@ -274,10 +222,9 @@ try
  $new_state = array();
  $generated = 0;
  $cached = 0;
-  $hydrated = 0;
  $errors = 0;

-  foreach ($mapping['files'] as $local_path=>$entry)
+  foreach ($mapping['files'] as $entry)
  {
    if (!is_array($entry) || (string)($entry['kind'] ?? '') !== 'file') continue;
    $webdav_path = trim((string)($entry['webdav_path'] ?? ''), '/');
@@ -294,29 +241,26 @@ 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
    {
-      $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++;
+      $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++;
    }
    catch (Throwable $e)
    {
@@ -329,14 +273,14 @@ try
  {
    if (!is_file($file) || basename($file) === 'state.json') continue;
    $name = basename($file);
-    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|gif|webp)$/', $name, $m)) continue;
+    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|webp)$/', $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($state_file, 0664);
+  @chmod($state_file, 0644);

-  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' lokale_quellen='.$hydrated.' fehler='.$errors."\n";
+  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' fehler='.$errors."\n";
  exit($errors > 0 ? 1 : 0);
 }
 catch (Throwable $e)
--- a/runtime/lib/resolve-nextcloud-target.php
+++ b/runtime/lib/resolve-nextcloud-target.php
@@ -1,24 +0,0 @@
-#!/usr/bin/env php
-<?php
-if (PHP_SAPI !== 'cli')
-{
-  fwrite(STDERR, "CLI only\n");
-  exit(1);
-}
-
-require_once(dirname(__DIR__, 2).'/include/nc_transport.inc.php');
-
-try
-{
-  if ($argc !== 2) throw new RuntimeException('Aufruf: resolve-nextcloud-target.php <nextcloud-url>');
-  $url = rtrim(trim((string)$argv[1]), '/');
-  bratonien_tools_nc_transport_scheme($url);
-  $host = bratonien_tools_nc_transport_host($url);
-  echo bratonien_tools_nc_transport_public_ip($host)."\n";
-  exit(0);
-}
-catch (Throwable $e)
-{
-  fwrite(STDERR, $e->getMessage()."\n");
-  exit(1);
-}
--- a/runtime/lib/shadow_tree.py
+++ b/runtime/lib/shadow_tree.py
--- a/runtime/native-runner.php
+++ b/runtime/native-runner.php
@@ -1,108 +0,0 @@
-#!/usr/bin/env php
-<?php
-if (PHP_SAPI !== 'cli')
-{
-  fwrite(STDERR, "CLI only\n");
-  exit(1);
-}
-
-$options = getopt('', array('connection-id::'));
-$connectionId = isset($options['connection-id']) ? (int)$options['connection-id'] : 0;
-
-$pluginRoot = dirname(__DIR__);
-$piwigoRoot = dirname($pluginRoot, 2);
-$base = rtrim($piwigoRoot, '/').'/_data/bratonien-tools';
-$schedulerDir = $base.'/nc-connector-scheduler';
-$stateFile = $schedulerDir.'/state.json';
-$runtimeDir = $base.'/nc-connector-runtime';
-$stateRoot = $base.'/nc-connector-state';
-
-function native_scheduler_state($path)
-{
-  if (!is_readable($path)) return array();
-  $decoded = json_decode((string)@file_get_contents($path), true);
-  return is_array($decoded) ? $decoded : array();
-}
-
-function native_scheduler_write($path, array $state)
-{
-  $json = json_encode($state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
-  if (!is_string($json)) return false;
-  $tmp = $path.'.tmp';
-  if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false) return false;
-  @chmod($tmp, 0640);
-  return @rename($tmp, $path);
-}
-
-foreach (array($schedulerDir, $runtimeDir, $stateRoot) as $dir)
-{
-  if (!is_dir($dir) && !@mkdir($dir, 0750, true) && !is_dir($dir))
-  {
-    fwrite(STDERR, "Runtime-Verzeichnis konnte nicht angelegt werden: {$dir}\n");
-    exit(1);
-  }
-}
-
-$state = native_scheduler_state($stateFile);
-$state['enabled'] = true;
-$state['mode'] = 'piwigo-native';
-$state['state'] = 'running';
-$state['message'] = $connectionId > 0 ? 'NC-Abgleich für Verbindung #'.$connectionId.' läuft.' : 'NC-Abgleich läuft.';
-$state['started_at'] = time();
-$state['timestamp'] = time();
-$state['connection_id'] = $connectionId;
-native_scheduler_write($stateFile, $state);
-
-$env = $_ENV;
-$env['PATH'] = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin';
-$env['BRATONIEN_NC_NATIVE'] = '1';
-$env['BRATONIEN_NC_PIWIGO_ROOT'] = $piwigoRoot;
-$env['BRATONIEN_NC_CONFIG_DIR'] = $runtimeDir;
-$env['BRATONIEN_NC_STATE_ROOT'] = $stateRoot;
-$env['BRATONIEN_NC_CONNECTION_ID'] = (string)$connectionId;
-$env['LC_ALL'] = 'C';
-$env['LANG'] = 'C';
-
-$bash = is_executable('/usr/bin/bash') ? '/usr/bin/bash' : '/bin/bash';
-$command = array($bash, $pluginRoot.'/runtime/run-all.sh');
-$spec = array(
-  0=>array('file','/dev/null','r'),
-  1=>array('pipe','w'),
-  2=>array('pipe','w'),
-);
-$process = @proc_open($command, $spec, $pipes, null, $env);
-$stdout = '';
-$stderr = '';
-$exit = 1;
-if (is_resource($process))
-{
-  $stdout = (string)stream_get_contents($pipes[1]);
-  $stderr = (string)stream_get_contents($pipes[2]);
-  fclose($pipes[1]);
-  fclose($pipes[2]);
-  $exit = proc_close($process);
-}
-else
-{
-  $stderr = 'run-all.sh konnte nicht gestartet werden.';
-}
-
-$state = native_scheduler_state($stateFile);
-$state['enabled'] = true;
-$state['mode'] = 'piwigo-native';
-$state['state'] = $exit === 0 ? 'success' : 'error';
-$state['message'] = $exit === 0
-  ? ($connectionId > 0 ? 'NC-Abgleich für Verbindung #'.$connectionId.' erfolgreich abgeschlossen.' : 'NC-Abgleich erfolgreich abgeschlossen.')
-  : ($connectionId > 0 ? 'NC-Abgleich für Verbindung #'.$connectionId.' fehlgeschlagen.' : 'NC-Abgleich fehlgeschlagen.');
-$state['timestamp'] = time();
-$state['finished_at'] = time();
-$state['exit_code'] = $exit;
-$state['connection_id'] = $connectionId;
-$state['stdout'] = trim($stdout);
-$state['stderr'] = trim($stderr);
-if (empty($state['next_due']) || (int)$state['next_due'] < time())
-{
-  $state['next_due'] = time() + 60;
-}
-native_scheduler_write($stateFile, $state);
-exit($exit === 0 ? 0 : 1);
--- a/runtime/reconcile-webdav.php
+++ b/runtime/reconcile-webdav.php
@@ -78,11 +78,8 @@ function webdav_source_fingerprint($baseUrl, $user, array $roots)
 $pluginRoot = dirname(__DIR__);
 $piwigoRoot = dirname($pluginRoot, 2);
 $dbConfig = $piwigoRoot.'/local/config/database.inc.php';
-$nativeMode = getenv('BRATONIEN_NC_NATIVE') === '1';
-$configDir = trim((string)getenv('BRATONIEN_NC_CONFIG_DIR'));
-if ($configDir === '') $configDir = $nativeMode ? rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-runtime' : '/etc/bratonien-tools/nc-connector';
-$stateRoot = trim((string)getenv('BRATONIEN_NC_STATE_ROOT'));
-if ($stateRoot === '') $stateRoot = $nativeMode ? rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-state' : '/var/lib/bratonien-tools/nc-connector';
+$configDir = '/etc/bratonien-tools/nc-connector';
+$stateRoot = '/var/lib/bratonien-tools/nc-connector';
 $publicSourceRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-source';
 $publicGalleryRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-gallery';
 $legacyGalleryRoot = rtrim($piwigoRoot, '/').'/galleries';
@@ -110,12 +107,11 @@ try
  $rows = $db->query("SELECT id,name,adapter,config_json,secret_blob FROM `{$table}` ORDER BY id DESC");
  if (!$rows) fail_webdav_reconcile('Connector-Verbindungen konnten nicht gelesen werden: '.$db->error);

-  foreach (array($configDir, $stateRoot, $publicSourceRoot, $publicGalleryRoot) as $dir)
+  foreach (array($configDir=>$configDir, $publicSourceRoot=>$publicSourceRoot, $publicGalleryRoot=>$publicGalleryRoot) as $dir=>$unused)
  {
-    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0750, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
+    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0755, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
  }
  @chmod($configDir, 0700);
-  @chmod($stateRoot, 0750);
  @chmod($publicSourceRoot, 0755);
  @chmod($publicGalleryRoot, 0755);

@@ -129,6 +125,7 @@ try
    if (!is_array($config)) $config = array();
    if ((string)$row['adapter'] !== 'remote') continue;
    if ((string)($config['source_mode'] ?? '') !== 'webdav-placeholder') continue;
+    if (empty($config['parallel_test'])) continue;

    try
    {
@@ -154,7 +151,7 @@ try
      $seenFingerprints[$fingerprint] = $id;
      $known[$id] = true;

-      $stateDir = $nativeMode ? $stateRoot.'/connection-'.$id : rtrim((string)($config['state_dir'] ?? ''), '/');
+      $stateDir = rtrim((string)($config['state_dir'] ?? ''), '/');
      if ($stateDir === '') $stateDir = $stateRoot.'/connection-'.$id;
      if (!is_dir($stateDir) && !mkdir($stateDir, 0750, true)) fail_webdav_reconcile('State-Verzeichnis konnte nicht angelegt werden.');
      @chmod($stateDir, 0750);
@@ -167,6 +164,8 @@ try
      }
      if (!is_dir($galleryRoot) && !mkdir($galleryRoot, 0755, true)) fail_webdav_reconcile('WebDAV-Galeriebereich konnte nicht angelegt werden.');
      @chmod($galleryRoot, 0755);
+
+      // Alte technische Wrapper unter ./galleries duerfen nicht als Piwigo-Alben auftauchen.
      webdav_remove_generated_tree($legacyDefault, $legacyGalleryRoot);

      $sourceDir = $publicSourceRoot.'/connection-'.$id;
@@ -190,9 +189,8 @@ try
      {
        $path = trim((string)($root['webdav_path'] ?? ''), '/');
        $display = trim((string)($root['display_name'] ?? ''));
-        $runtimePath = $path === '' ? '/' : $path;
-        if ($display === '' || preg_match('/[\t\r\n]/', $runtimePath.$display)) fail_webdav_reconcile('Eine gespeicherte WebDAV-Wurzel ist ungueltig.');
-        $rootLines[] = $runtimePath."\t".$display;
+        if ($path === '' || $display === '' || preg_match('/[\t\r\n]/', $path.$display)) fail_webdav_reconcile('Eine gespeicherte WebDAV-Wurzel ist ungueltig.');
+        $rootLines[] = $path."\t".$display;
      }
      file_put_contents($rootsPath, implode("\n", $rootLines)."\n", LOCK_EX);
      @chmod($rootsPath, 0600);
@@ -217,23 +215,21 @@ try
      file_put_contents($configPath, implode("\n", $lines)."\n", LOCK_EX);
      @chmod($configPath, 0600);

-      unset($config['migration'], $config['parallel_test']);
      $config['state_dir'] = $stateDir;
      $config['status_file'] = $statusFile;
      $config['parallel_gallery_root'] = $galleryRoot;
      $config['source_fingerprint'] = $fingerprint;
      $config['runtime'] = array(
-        'mode'=>$nativeMode ? 'piwigo-native-webdav' : 'webdav',
+        'mode'=>'parallel-webdav',
        'config'=>$configPath,
        'piwigo_sync_enabled'=>true,
        'reconciled_at'=>date('Y-m-d H:i:s'),
      );
      $json = json_encode($config, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-      if (!is_string($json)) fail_webdav_reconcile('WebDAV-Runtime-Konfiguration konnte nicht serialisiert werden.');
-      $escaped = $db->real_escape_string($json);
-      if (!$db->query("UPDATE `{$table}` SET config_json='{$escaped}' WHERE id={$id} AND adapter='remote' LIMIT 1"))
+      if (is_string($json))
      {
-        fail_webdav_reconcile('WebDAV-Runtime-Status konnte nicht gespeichert werden: '.$db->error);
+        $escaped = $db->real_escape_string($json);
+        $db->query("UPDATE `{$table}` SET config_json='{$escaped}' WHERE id={$id} LIMIT 1");
      }
    }
    catch (Throwable $e)
--- a/runtime/repair-webdav-cache-permissions.sh
+++ b/runtime/repair-webdav-cache-permissions.sh
@@ -1,36 +0,0 @@
-#!/usr/bin/env bash
-set -Eeuo pipefail
-
-PIWIGO_ROOT="${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/runtime/run-all.sh
+++ b/runtime/run-all.sh
@@ -1,26 +1,10 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail

+CONFIG_DIR="/etc/bratonien-tools/nc-connector"
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
-PIWIGO_ROOT_DEFAULT="${BRATONIEN_NC_PIWIGO_ROOT:-$(cd -- "$SCRIPT_DIR/../../.." && pwd)}"
-CONFIG_DIR="${BRATONIEN_NC_CONFIG_DIR:-/etc/bratonien-tools/nc-connector}"
-NATIVE_MODE="${BRATONIEN_NC_NATIVE:-0}"
-TARGET_CONNECTION_ID="${BRATONIEN_NC_CONNECTION_ID:-0}"
-GLOBAL_LOCK_DIR="${PIWIGO_ROOT_DEFAULT%/}/_data/bratonien-tools/nc-connector-scheduler"
-GLOBAL_LOCK_FILE="$GLOBAL_LOCK_DIR/worker.lock"
-mkdir -p -- "$GLOBAL_LOCK_DIR"
-exec 8>"$GLOBAL_LOCK_FILE"
-if ! flock -n 8; then
-    echo "NC Connector: ein Lauf ist bereits aktiv."
-    exit 0
-fi
 shopt -s nullglob

-if [[ ! "$TARGET_CONNECTION_ID" =~ ^[0-9]+$ ]]; then
-    echo "NC Connector: ungültige Ziel-Verbindungs-ID: $TARGET_CONNECTION_ID" >&2
-    exit 1
-fi
-
 read_config_value() {
    local key="$1"
    local file="$2"
@@ -33,35 +17,103 @@ read_config_value() {
    printf '%s' "$value"
 }

+compact_text() {
+    printf '%s\n' "$1" | tail -n 20 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//'
+}
+
+read_webdav_failure_detail() {
+    local config="$1"
+    local captured_output="${2:-}"
+    local connection_id piwigo_root status_file status_detail
+
+    connection_id="$(read_config_value CONNECTION_ID "$config")"
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+
+    status_detail=""
+    if [[ -n "$connection_id" ]]; then
+        status_file="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status/connection-${connection_id}.json"
+        if [[ -r "$status_file" ]]; then
+            status_detail="$(php -r '
+              $file = $argv[1];
+              $data = json_decode((string)@file_get_contents($file), true);
+              if (!is_array($data)) exit(0);
+              $message = trim((string)($data["message"] ?? ""));
+              $detail = trim((string)($data["error_detail"] ?? ""));
+              $parts = array();
+              if ($message !== "") $parts[] = $message;
+              if ($detail !== "") $parts[] = $detail;
+              if ($parts) {
+                $text = preg_replace("/\\s+/u", " ", implode(" - ", $parts));
+                echo trim((string)$text);
+              }
+            ' "$status_file")"
+        fi
+    fi
+
+    if [[ -n "$captured_output" ]]; then
+        captured_output="$(compact_text "$captured_output")"
+    fi
+
+    if [[ -n "$status_detail" && -n "$captured_output" ]]; then
+        printf '%s' "$status_detail | Prozessausgabe: $captured_output"
+    elif [[ -n "$status_detail" ]]; then
+        printf '%s' "$status_detail"
+    elif [[ -n "$captured_output" ]]; then
+        printf '%s' "$captured_output"
+    elif [[ -z "$connection_id" ]]; then
+        printf '%s' 'WebDAV-Prozess wurde gestartet, aber die Verbindungs-ID fehlt in der Runtime-Konfiguration.'
+    else
+        printf '%s' "WebDAV-Prozess fuer Verbindung ${connection_id} endete mit Fehler, lieferte aber weder Statusdatei noch Prozessausgabe."
+    fi
+}
+
 write_route_status() {
    local route="$1"
    local label="$2"
    local detail="$3"
-    local success="$4"
+    local fallback_used="$4"
+    local success="$5"
+
    [[ -n "${ROUTE_STATUS_FILE:-}" ]] || return 0
    mkdir -p -- "$(dirname -- "$ROUTE_STATUS_FILE")"
+
    php -r '
      $payload = array(
        "timestamp" => time(),
        "route" => (string)$argv[2],
        "label" => (string)$argv[3],
        "detail" => (string)$argv[4],
-        "fallback_used" => false,
-        "success" => $argv[5] === "1"
+        "fallback_used" => $argv[5] === "1",
+        "success" => $argv[6] === "1"
      );
      $json = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
-      if (!is_string($json) || file_put_contents($argv[1], $json.PHP_EOL, LOCK_EX) === false) exit(1);
+      if (!is_string($json) || file_put_contents($argv[1], $json.PHP_EOL, LOCK_EX) === false) {
+        fwrite(STDERR, "Route-Status konnte nicht geschrieben werden.\n");
+        exit(1);
+      }
      @chmod($argv[1], 0644);
-    ' "$ROUTE_STATUS_FILE" "$route" "$label" "$detail" "$success"
+    ' "$ROUTE_STATUS_FILE" "$route" "$label" "$detail" "$fallback_used" "$success"
 }

-if [[ "$NATIVE_MODE" != "1" ]]; then
-    php "$SCRIPT_DIR/reconcile.php"
+if ! php "$SCRIPT_DIR/reconcile.php"; then
+    echo "NC Connector: gespeicherte lokale Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
+    exit 1
 fi
-php "$SCRIPT_DIR/reconcile-webdav.php"
-php "$SCRIPT_DIR/cleanup-webdav-piwigo.php"
-if [[ "$NATIVE_MODE" != "1" ]]; then
-    php "$SCRIPT_DIR/cleanup-stale.php"
+
+if ! php "$SCRIPT_DIR/reconcile-webdav.php"; then
+    echo "NC Connector: WebDAV-Verbindungen konnten nicht mit der Runtime abgeglichen werden." >&2
+    exit 1
+fi
+
+if ! php "$SCRIPT_DIR/cleanup-webdav-piwigo.php"; then
+    echo "NC Connector: Piwigo-Inhalte geloeschter WebDAV-Verbindungen konnten nicht bereinigt werden." >&2
+    exit 1
+fi
+
+if ! php "$SCRIPT_DIR/cleanup-stale.php"; then
+    echo "NC Connector: verwaiste Laufzeitdateien konnten nicht bereinigt werden." >&2
+    exit 1
 fi

 configs=("$CONFIG_DIR"/connection-*.conf)
@@ -75,120 +127,115 @@ fi
 route_piwigo_root=""
 for candidate in "${webdav_configs[@]}" "${configs[@]}"; do
    [[ -f "$candidate" ]] || continue
-    candidate_id="$(read_config_value CONNECTION_ID "$candidate")"
-    if [[ "$TARGET_CONNECTION_ID" -gt 0 && "$candidate_id" != "$TARGET_CONNECTION_ID" ]]; then
-        continue
-    fi
    route_piwigo_root="$(read_config_value PIWIGO_ROOT "$candidate")"
    [[ -n "$route_piwigo_root" ]] && break
 done
-[[ -n "$route_piwigo_root" ]] || route_piwigo_root="$PIWIGO_ROOT_DEFAULT"
+[[ -n "$route_piwigo_root" ]] || route_piwigo_root="/var/www/piwigo"
 ROUTE_STATUS_FILE="${route_piwigo_root%/}/_data/bratonien-tools/nc-connector-status/route-status.json"

-failure_count=0
-webdav_count=0
-local_count=0
-summary_parts=()
-matched_count=0
+webdav_success=0
+webdav_failed=0
+webdav_failure_detail=""

-for config in "${webdav_configs[@]}"; do
-    [[ -f "$config" ]] || continue
-    name="$(basename "$config")"
-    connection_id="$(read_config_value CONNECTION_ID "$config")"
-    if [[ ! "$connection_id" =~ ^[0-9]+$ ]] || [[ "$connection_id" -lt 1 ]]; then
-        echo "NC Connector: $name besitzt keine gueltige Verbindungs-ID." >&2
-        failure_count=$((failure_count + 1))
-        summary_parts+=("$name: ungueltige Verbindungs-ID")
-        continue
-    fi
-    if [[ "$TARGET_CONNECTION_ID" -gt 0 && "$connection_id" != "$TARGET_CONNECTION_ID" ]]; then
-        continue
-    fi
-
-    matched_count=$((matched_count + 1))
-    webdav_count=$((webdav_count + 1))
-    echo "NC Connector WebDAV #$connection_id: $name"
-    output=""
-    if output="$(env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh" 2>&1)"; then
-        [[ -z "$output" ]] || printf '%s\n' "$output"
-        summary_parts+=("WebDAV #$connection_id erfolgreich")
-    else
-        code=$?
-        [[ -z "$output" ]] || printf '%s\n' "$output" >&2
-        failure_count=$((failure_count + 1))
-        summary_parts+=("WebDAV #$connection_id fehlgeschlagen (Exit $code)")
-    fi
-done
-
-if [[ "$NATIVE_MODE" != "1" ]]; then
-    for config in "${configs[@]}"; do
-        [[ -f "$config" ]] || continue
+if [[ ${#webdav_configs[@]} -eq 0 ]]; then
+    webdav_failed=1
+    webdav_failure_detail="Keine WebDAV-Runtime-Verbindung ist konfiguriert. Es existiert aktuell nur die Legacy-Verbindung; deshalb kann WebDAV nicht primaer laufen."
+    echo "NC Connector: $webdav_failure_detail" >&2
+else
+    for config in "${webdav_configs[@]}"; do
        name="$(basename "$config")"
-        connection_id="0"
-        if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
-            connection_id="${BASH_REMATCH[1]}"
-        fi
-        if [[ "$connection_id" -lt 1 ]]; then
-            echo "NC Connector: $name besitzt keine gueltige Verbindungs-ID." >&2
-            failure_count=$((failure_count + 1))
-            summary_parts+=("$name: ungueltige Verbindungs-ID")
-            continue
-        fi
-        if [[ "$TARGET_CONNECTION_ID" -gt 0 && "$connection_id" != "$TARGET_CONNECTION_ID" ]]; then
-            continue
-        fi
-
-        matched_count=$((matched_count + 1))
-        piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
-        [[ -n "$piwigo_root" ]] || piwigo_root="$PIWIGO_ROOT_DEFAULT"
-        tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
-        if [[ -f "$tombstone_dir/deleted-$connection_id" ]]; then
-            echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
-            rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
-                "$CONFIG_DIR/connection-$connection_id.db-password" \
-                "$CONFIG_DIR/connection-$connection_id.piwigo-password" \
-                "$CONFIG_DIR/connection-$connection_id.storages.tsv" \
-                "$CONFIG_DIR/connection-$connection_id.roots.tsv"
-            rm -f -- "$tombstone_dir/deleted-$connection_id"
-            continue
-        fi
-
-        local_count=$((local_count + 1))
-        echo "NC Connector Local #$connection_id: $name"
-        if env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
-            summary_parts+=("Local #$connection_id erfolgreich")
+        echo "NC Connector WebDAV primaer: $name"
+        webdav_output=""
+        if webdav_output="$(env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync-webdav.sh" 2>&1)"; then
+            webdav_success=1
+            [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output"
        else
-            failure_count=$((failure_count + 1))
-            summary_parts+=("Local #$connection_id fehlgeschlagen")
+            webdav_exit=$?
+            webdav_failed=1
+            [[ -z "$webdav_output" ]] || printf '%s\n' "$webdav_output" >&2
+            webdav_failure_detail="$(read_webdav_failure_detail "$config" "$webdav_output")"
+            webdav_failure_detail="Exit-Code ${webdav_exit}: ${webdav_failure_detail}"
+            echo "NC Connector: WebDAV-Lauf fehlgeschlagen: $webdav_failure_detail" >&2
+            echo "NC Connector: Legacy-Fallback bleibt verfuegbar." >&2
        fi
    done
 fi

-if [[ "$TARGET_CONNECTION_ID" -gt 0 && "$matched_count" -eq 0 ]]; then
-    write_route_status "failed" "FEHLER - Verbindung #$TARGET_CONNECTION_ID" "Keine Laufzeitkonfiguration für Verbindung #$TARGET_CONNECTION_ID gefunden." "0"
-    echo "NC Connector: keine Laufzeitkonfiguration für Verbindung #$TARGET_CONNECTION_ID gefunden." >&2
-    exit 1
-fi
-
-summary_detail="$(IFS='; '; printf '%s' "${summary_parts[*]}")"
-[[ -n "$summary_detail" ]] || summary_detail="Keine Verbindung wurde ausgefuehrt."
-
-if [[ "$failure_count" -eq 0 ]]; then
-    if [[ "$webdav_count" -gt 0 && "$local_count" -gt 0 ]]; then
-        route="mixed"
-        label="WebDAV + Local"
-    elif [[ "$webdav_count" -gt 0 ]]; then
-        route="webdav"
-        label="WebDAV"
-    else
-        route="local"
-        label="Local"
-    fi
-    write_route_status "$route" "$label" "$summary_detail" "1"
-    echo "NC Connector: angeforderte Verbindung wurde erfolgreich verarbeitet."
+if [[ "$webdav_success" -eq 1 ]]; then
+    write_route_status \
+        "webdav" \
+        "WebDAV (primaer)" \
+        "WebDAV erfolgreich. Legacy-Fallback wurde in diesem Lauf nicht ausgefuehrt." \
+        "0" \
+        "1"
+    echo "NC Connector: WebDAV erfolgreich; Legacy-Verbindung wird in diesem Lauf nicht ausgefuehrt."
    exit 0
 fi

-write_route_status "failed" "FEHLER - angeforderte Verbindung" "$summary_detail" "0"
-echo "NC Connector: die angeforderte Verbindung ist fehlgeschlagen." >&2
+if [[ ${#configs[@]} -eq 0 ]]; then
+    [[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV ist fehlgeschlagen; Ursache konnte nicht ermittelt werden."
+    write_route_status \
+        "failed" \
+        "FEHLER - kein Datenweg" \
+        "WebDAV-Fehler: $webdav_failure_detail Keine Legacy-Fallback-Verbindung vorhanden." \
+        "0" \
+        "0"
+    echo "NC Connector: WebDAV ist fehlgeschlagen und es ist keine Legacy-Fallback-Verbindung vorhanden." >&2
+    exit 1
+fi
+
+echo "NC Connector: kein erfolgreicher WebDAV-Lauf; Legacy-Fallback wird ausgefuehrt."
+legacy_result=0
+
+for config in "${configs[@]}"; do
+    name="$(basename "$config")"
+    connection_id=""
+    if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
+        connection_id="${BASH_REMATCH[1]}"
+    fi
+
+    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+    tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
+
+    if [[ -n "$connection_id" && -f "$tombstone_dir/deleted-$connection_id" ]]; then
+        echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
+        rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
+            "$CONFIG_DIR/connection-$connection_id.db-password" \
+            "$CONFIG_DIR/connection-$connection_id.piwigo-password" \
+            "$CONFIG_DIR/connection-$connection_id.storages.tsv" \
+            "$CONFIG_DIR/connection-$connection_id.roots.tsv"
+        rm -f -- "$tombstone_dir/deleted-$connection_id"
+        continue
+    fi
+
+    echo "NC Connector Legacy-Fallback: $name"
+    if ! env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
+        legacy_result=1
+    fi
+done
+
+if [[ "$legacy_result" -eq 0 ]]; then
+    [[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV war nicht erfolgreich; Ursache konnte nicht ermittelt werden."
+    write_route_status \
+        "legacy_fallback" \
+        "LEGACY-FALLBACK AKTIV" \
+        "WebDAV-Fehler: $webdav_failure_detail Legacy-Fallback wurde erfolgreich ausgefuehrt." \
+        "1" \
+        "1"
+    echo "NC Connector: Legacy-Fallback erfolgreich."
+    exit 0
+fi
+
+[[ -n "$webdav_failure_detail" ]] || webdav_failure_detail="WebDAV war nicht erfolgreich; Ursache konnte nicht ermittelt werden."
+write_route_status \
+    "failed" \
+    "FEHLER - WebDAV und Fallback" \
+    "WebDAV-Fehler: $webdav_failure_detail Legacy-Fallback ist ebenfalls fehlgeschlagen." \
+    "1" \
+    "0"
+
+if [[ "$webdav_failed" -eq 1 ]]; then
+    echo "NC Connector: WebDAV und Legacy-Fallback sind fehlgeschlagen." >&2
+fi
 exit 1
--- a/runtime/sync-webdav.sh
+++ b/runtime/sync-webdav.sh
@@ -59,6 +59,10 @@ for target in (status_file, public_file):
 PY
 }

+compact_output() {
+    tail -n 12 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//'
+}
+
 failure() {
    local code="$1" command="$2" line="$3"
    trap - ERR
@@ -75,57 +79,43 @@ done < "$WEBDAV_ROOTS_FILE"

 [[ ${#ROOT_ARGS[@]} -gt 0 ]] || { write_status error "Keine WebDAV-Wurzeln konfiguriert"; exit 1; }

-WEBDAV_CONNECT_IP="$(php "$SCRIPT_DIR/lib/resolve-nextcloud-target.php" "$WEBDAV_BASE_URL")"
-[[ -n "$WEBDAV_CONNECT_IP" ]] || { write_status error "Nextcloud-Zieladresse konnte nicht ermittelt werden"; exit 1; }
-
-PLACEHOLDER_OUTPUT=""
-PLACEHOLDER_EXIT=0
-if PLACEHOLDER_OUTPUT="$(python3 "$SCRIPT_DIR/lib/build_webdav_placeholder_source.py" \
+python3 "$SCRIPT_DIR/lib/build_webdav_placeholder_source.py" \
    --base-url "$WEBDAV_BASE_URL" \
-    --connect-ip "$WEBDAV_CONNECT_IP" \
    --user "$WEBDAV_USER" \
    --password-file "$WEBDAV_PASSWORD_FILE" \
    "${ROOT_ARGS[@]}" \
    --source-dir "$WEBDAV_SOURCE_DIR" \
    --manifest "$MANIFEST" \
-    --mapping "$WEBDAV_MAPPING_FILE" 2>&1)"; then
-    PLACEHOLDER_EXIT=0
-else
-    PLACEHOLDER_EXIT=$?
-fi
-[[ -z "$PLACEHOLDER_OUTPUT" ]] || printf '%s\n' "$PLACEHOLDER_OUTPUT"
-if [[ "$PLACEHOLDER_EXIT" -ne 0 ]]; then
-    DETAIL="Exit-Code: $PLACEHOLDER_EXIT"
-    if [[ -n "$PLACEHOLDER_OUTPUT" ]]; then
-        DETAIL+="; Ausgabe: $(printf '%s\n' "$PLACEHOLDER_OUTPUT" | tail -n 20 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//')"
-    fi
-    trap - ERR
-    write_status error "WebDAV-Shadow-Tree fehlgeschlagen" "$DETAIL"
-    exit "$PLACEHOLDER_EXIT"
-fi
+    --mapping "$WEBDAV_MAPPING_FILE"

-SHADOW_OUTPUT=""
-SHADOW_EXIT=0
-if SHADOW_OUTPUT="$(python3 "$SCRIPT_DIR/lib/shadow_tree.py" \
+python3 "$SCRIPT_DIR/lib/shadow_tree.py" \
    --manifest "$MANIFEST" \
    --destination "$GALLERY_ROOT" \
-    --state "$SHADOW_MAP_FILE" 2>&1)"; then
-    SHADOW_EXIT=0
-else
-    SHADOW_EXIT=$?
-fi
-[[ -z "$SHADOW_OUTPUT" ]] || printf '%s\n' "$SHADOW_OUTPUT"
-if [[ "$SHADOW_EXIT" -ne 0 ]]; then
-    DETAIL="Exit-Code: $SHADOW_EXIT"
-    if [[ -n "$SHADOW_OUTPUT" ]]; then
-        DETAIL+="; Ausgabe: $(printf '%s\n' "$SHADOW_OUTPUT" | tail -n 20 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//')"
-    fi
-    trap - ERR
-    write_status error "WebDAV-Shadow-Tree fehlgeschlagen" "$DETAIL"
-    exit "$SHADOW_EXIT"
-fi
+    --state "$SHADOW_MAP_FILE"

 trap - ERR
+PREVIEW_CACHE="$PIWIGO_ROOT/_data/bratonien-tools/nc-webdav-preview/connection-$CONNECTION_ID"
+PREVIEW_OUTPUT=""
+PREVIEW_EXIT=0
+if PREVIEW_OUTPUT="$(php "$SCRIPT_DIR/lib/precache-webdav-previews.php" \
+    --mapping="$WEBDAV_MAPPING_FILE" \
+    --base-url="$WEBDAV_BASE_URL" \
+    --user="$WEBDAV_USER" \
+    --password-file="$WEBDAV_PASSWORD_FILE" \
+    --cache-dir="$PREVIEW_CACHE" 2>&1)"; then
+    PREVIEW_EXIT=0
+else
+    PREVIEW_EXIT=$?
+fi
+[[ -z "$PREVIEW_OUTPUT" ]] || printf '%s\n' "$PREVIEW_OUTPUT"
+if [[ "$PREVIEW_EXIT" -ne 0 ]]; then
+    DETAIL="Exit-Code: $PREVIEW_EXIT"
+    if [[ -n "$PREVIEW_OUTPUT" ]]; then
+        DETAIL+="; Ausgabe: $(printf '%s\n' "$PREVIEW_OUTPUT" | compact_output)"
+    fi
+    write_status error "WebDAV-Vorschaubilder konnten beim Einlesen nicht erzeugt werden" "$DETAIL"
+    exit "$PREVIEW_EXIT"
+fi

 if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
    PIWIGO_OUTPUT=""
@@ -143,7 +133,7 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
    if [[ "$PIWIGO_EXIT" -ne 0 ]]; then
        DETAIL="Exit-Code: $PIWIGO_EXIT"
        if [[ -n "$PIWIGO_OUTPUT" ]]; then
-            DETAIL+="; Ausgabe: $(printf '%s\n' "$PIWIGO_OUTPUT" | tail -n 12 | tr '\n' ' ' | sed 's/[[:space:]]\+/ /g; s/^[[:space:]]//; s/[[:space:]]$//')"
+            DETAIL+="; Ausgabe: $(printf '%s\n' "$PIWIGO_OUTPUT" | compact_output)"
        fi

        if grep -qi 'Invalid username/password' <<<"$PIWIGO_OUTPUT"; then
@@ -170,9 +160,28 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
        exit "$PIWIGO_EXIT"
    fi

+    DERIVATIVE_OUTPUT=""
+    DERIVATIVE_EXIT=0
+    if DERIVATIVE_OUTPUT="$(php "$SCRIPT_DIR/lib/build-webdav-derivatives.php" \
+        --piwigo-root="$PIWIGO_ROOT" \
+        --connection-id="$CONNECTION_ID" 2>&1)"; then
+        DERIVATIVE_EXIT=0
+    else
+        DERIVATIVE_EXIT=$?
+    fi
+    [[ -z "$DERIVATIVE_OUTPUT" ]] || printf '%s\n' "$DERIVATIVE_OUTPUT"
+    if [[ "$DERIVATIVE_EXIT" -ne 0 ]]; then
+        DETAIL="Exit-Code: $DERIVATIVE_EXIT"
+        if [[ -n "$DERIVATIVE_OUTPUT" ]]; then
+            DETAIL+="; Ausgabe: $(printf '%s\n' "$DERIVATIVE_OUTPUT" | compact_output)"
+        fi
+        write_status error "Piwigo-Derivate für WebDAV-Bilder konnten nicht erzeugt werden" "$DETAIL"
+        exit "$DERIVATIVE_EXIT"
+    fi
+
    if grep -q 'Piwigo-Synchronisierung per API erfolgreich' <<<"$PIWIGO_OUTPUT"; then
        write_status ok \
-            "WebDAV eingelesen und Piwigo synchronisiert" \
+            "WebDAV eingelesen, Piwigo synchronisiert und Derivate erzeugt" \
            "" \
            "api" \
            "ok" \
@@ -181,7 +190,7 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
            "Fallback wurde nicht benötigt"
    elif grep -q 'Piwigo-Datenbanksynchronisierung per Benutzername/Passwort-Fallback erfolgreich' <<<"$PIWIGO_OUTPUT"; then
        write_status ok \
-            "WebDAV eingelesen und Piwigo über Fallback synchronisiert" \
+            "WebDAV eingelesen, Piwigo über Fallback synchronisiert und Derivate erzeugt" \
            "" \
            "fallback" \
            "not_used" \
@@ -189,8 +198,8 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
            "ok" \
            "Benutzername/Passwort-Fallback erfolgreich"
    else
-        write_status ok "WebDAV eingelesen und Piwigo synchronisiert"
+        write_status ok "WebDAV eingelesen, Piwigo synchronisiert und Derivate erzeugt"
    fi
 else
-    write_status ok "WebDAV eingelesen; Piwigo-Synchronisierung ist für diese Verbindung deaktiviert"
+    write_status ok "WebDAV eingelesen und Vorschaubilder erzeugt; Registrierung erfolgt über den bestehenden produktiven Piwigo-Sync"
 fi
--- a/template/admin_tabs.tpl
+++ b/template/admin_tabs.tpl
@@ -9,7 +9,13 @@
 .bratonien-tab-panel { width:100%; max-width:none; margin-left:0 !important; margin-right:0 !important; }
 .bratonien-tab-panel[hidden] { display:none !important; }
 .bratonien-card { margin-left:0; margin-right:0; }
-@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px} }
+.bratonien-edit-dialog { width:min(920px,calc(100vw - 3rem)); max-height:88vh; overflow:auto; background:#444; color:inherit; border:1px solid #777; border-radius:4px; padding:0; box-shadow:0 18px 60px rgba(0,0,0,.55); }
+.bratonien-edit-dialog::backdrop { background:rgba(0,0,0,.55); }
+.bratonien-edit-dialog__body { padding:1.25rem 1.5rem; }
+.bratonien-storage-row { display:grid; grid-template-columns:minmax(120px,.7fr) minmax(150px,1fr) minmax(240px,1.5fr) auto; gap:.5rem; align-items:end; margin:.5rem 0; }
+.bratonien-storage-row label { display:flex; flex-direction:column; gap:.25rem; }
+.bratonien-storage-row input { width:100%; box-sizing:border-box; }
+@media (max-width:760px) { .bratonien-tabs{gap:5px}.bratonien-tab{border-bottom:1px solid rgba(255,255,255,.16);border-radius:4px;margin-bottom:0;padding:9px 11px}.bratonien-storage-row{grid-template-columns:1fr} }
 </style>
 <div id="bratonien-tabs-anchor"></div>
 <script>
@@ -53,15 +59,19 @@

    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(mode()==='edit'){
+      if(current==='edit'){
        if(heading)heading.textContent='Verbindung bearbeiten';
        if(finish)finish.textContent='Änderungen speichern';
+      }else if(current==='migrate'){
+        if(heading)heading.textContent='Auf WebDAV migrieren';
+        if(finish)finish.textContent='Migration starten';
      }else{
        if(heading)heading.textContent='Neue Verbindung';
        if(finish)finish.textContent='Verbindung anlegen';
@@ -80,13 +90,13 @@
      return fetch(window.location.href,{method:'POST',credentials:'same-origin',cache:'no-store',headers:{'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8'},body:body.toString()});
    }
    function closeAfterReset(){
-      if(resetBusy)return;resetBusy=true;setOpen(false);setMode('');
+      if(resetBusy)return;resetBusy=true;setOpen(false);clearMode();
      resetServer().catch(function(){}).finally(function(){resetBusy=false;if(dialog){if(typeof dialog.close==='function'&&dialog.open)dialog.close();else dialog.removeAttribute('open');}});
    }

    if(openButton){
      openButton.addEventListener('click',function(event){
-        event.preventDefault();event.stopImmediatePropagation();setMode('');showWizard();
+        event.preventDefault();event.stopImmediatePropagation();clearMode();showWizard();
      },true);
    }
    if(closeButton){
@@ -95,33 +105,111 @@
    if(dialog){
      dialog.addEventListener('cancel',function(event){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();},true);
      dialog.addEventListener('click',function(event){if(event.target===dialog){event.preventDefault();event.stopImmediatePropagation();closeAfterReset();}},true);
-
      [].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'||submitter.value==='nc_connector_wizard_finish')setMode('');
+            if(submitter.value==='nc_connector_wizard_reset')clearMode();
          }
        },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';
@@ -174,7 +262,7 @@
    poll();schedule();
  }

-  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectorPolling();}
+  function initAll(){initBratonienTabs();initNCWizardLifecycle();initNCConnectionEditing();initNCConnectorPolling();}
  if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',initAll);else initAll();
 })();
 </script>
--- a/webdav-image.php
+++ b/webdav-image.php
@@ -8,7 +8,6 @@ if (!defined('BRATONIEN_TOOLS_PATH'))
  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/nc_transport.inc.php');

 function bratonien_tools_webdav_image_abort($status, $message)
 {
@@ -52,18 +51,6 @@ if (!pwg_db_num_rows($access_result)) bratonien_tools_webdav_image_abort(403, 'K
 $source = bratonien_tools_webdav_image_source_info($image_id);
 if (!$source) bratonien_tools_webdav_image_abort(404, 'Keine WebDAV-Quelle für dieses Bild gefunden.');

-if (!empty($_GET['ajaxload']))
-{
-  $preview = !empty($_GET['preview']);
-  $final_url = bratonien_tools_webdav_image_url($image_id, $preview);
-  if (!$final_url) bratonien_tools_webdav_image_abort(404, 'Keine WebDAV-Bild-URL verfügbar.');
-
-  header('Content-Type: application/json; charset=utf-8');
-  header('Cache-Control: no-store, max-age=0');
-  echo json_encode(array('url'=>$final_url), JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
-  exit;
-}
-
 if (!empty($_GET['preview']))
 {
  $preview = bratonien_tools_webdav_preview_path($source);
@@ -133,7 +120,7 @@ $options = array(
  CURLOPT_USERPWD => $user.':'.$password,
  CURLOPT_RETURNTRANSFER => false,
  CURLOPT_FAILONERROR => false,
-  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.7.24',
+  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.6.1',
  CURLOPT_HEADERFUNCTION => function($ch, $line)
  {
    $length = strlen($line);
@@ -160,7 +147,6 @@ $options = array(
    return strlen($data);
  },
 );
-bratonien_tools_nc_transport_apply_curl($options, $url);
 if (!empty($_SERVER['HTTP_RANGE']))
 {
  $range = trim((string)$_SERVER['HTTP_RANGE']);
Author	SHA1	Message	Date
Terranom674	370ead2b90	ignore stale branch marker	2026-08-19 14:59:22 +02:00
Terranom674	5d9e017131	noop	2026-08-19 14:59:03 +02:00