feat: large polish pass — UX fixes, per-chat scope, restore/backup, action events

Backend
- Per-chat album scope for Immich commands (search/latest/memory/...): new
  allowed_album_ids on CommandTrackerListener, threaded listener/page kwargs
  through ProviderCommandHandler.handle; PATCH listener-scope endpoint.
- /search and /find accept a trailing page number; Immich client search_smart
  / search_metadata take a page param.
- Immich person-asset lookup switched from removed GET /api/people/{id}/assets
  to POST /api/search/metadata with personIds (fixes /person command and
  auto_organize rules silently returning zero candidates on Immich 1.106+).
- Auto_organize rule now sets the target album's thumbnail to the first added
  image when missing (falls back to any asset type); failures do not fail the
  rule. add_assets_to_album surfaces the Immich error body on non-2xx.
- EventLog.user_id / action_id / action_name columns with defensive migration
  + backfill. Status query filters by user_id directly; Immich/webhook paths
  emit user_id explicitly. action_runner writes an action_success/partial/
  failed event on each non-dry-run.
- Dashboard DELETE /api/status/events (scoped to user_id) + rendering live
  tracker/provider/action names via FK join with snapshot fallback.
- PATCH /api/users/{id} for username/role change with last-admin guard.
- Deletion protection returns structured {message, entity, blocked_by}
  (ApiError carries .blockedBy; frontend opens BlockedByModal).
- Backup prepare-restore → AppSetting markers + atomic write of
  pending_restore.json; lifespan hook applies on next startup and archives
  under data/applied_restores/. apply-restart sends SIGTERM so the lifespan
  shutdown runs; NOTIFY_BRIDGE_SUPERVISED env override gates the button.
  Manual POST /api/backup/files (same format as scheduled).
- New periodic-summary test path reuses shared collect_scheduled_assets
  (limit=0) so test and future production code go through one primitive.
- Per-receiver locale for Telegram test messages (resolves
  TelegramChat.language_override per chat instead of applying the first
  receiver's locale to everyone).
- Bounded concurrency (semaphores) in NotificationDispatcher._preload_asset_data
  and _refresh_telegram_chat_titles; chat title sweep extended to 24h since
  save_chat_from_webhook covers active chats opportunistically.
- Telegram poller detects the \"webhook is active\" 409 and auto-calls
  deleteWebhook for bots whose DB update_mode is polling (throttled per bot).
- TelegramClient.get_chat added (CLAUDE.md rule 6); set_album_thumbnail added.
- Seeds: rename \"Default Commands\" → \"Default Immich Commands\";
  track_assets_removed default False.

Frontend
- Global provider selector visible when there is only one provider.
- Clear-events button + i18n + ConfirmModal on the dashboard; new icons/
  labels/filters/colors for action_success / action_partial / action_failed.
- Auto-select first available tracking/template/command/config + bot on
  create forms (trackers, command-trackers, targets, template/command
  configs).
- Telegram target disable_url_preview defaults to true.
- BlockedByModal wired into 8 deletion flows; fetchAuth helper for
  multipart/binary calls (reuses api()'s refresh + ApiError mapping).
- Immich tracker 'Checking links' parallelised (concurrency cap 6).
- Backup page: pending-restore banner + Apply-now / Apply-later modal,
  restarting overlay polling /api/health, manual 'Create backup' button.
- Command-trackers listener row gets an 'Edit album scope' modal with
  inherit/explicit multiselect.
- Users page: Edit user modal (username + role).
- parseDate helper for consistent UTC date rendering.

Migrations / schema
- event_log: + user_id, action_id, action_name (+ backfill user_id from
  notification_tracker).
- command_tracker_listener: + allowed_album_ids.

packages/server/src/notify_bridge_server/database/migrations.py

@@ -84,11 +84,26 @@ async def migrate_schema(engine: AsyncEngine) -> None:
                 ("provider_id", "ALTER TABLE event_log ADD COLUMN provider_id INTEGER"),
                 ("provider_name", "ALTER TABLE event_log ADD COLUMN provider_name TEXT DEFAULT ''"),
                 ("assets_count", "ALTER TABLE event_log ADD COLUMN assets_count INTEGER DEFAULT 0"),
+                ("user_id", "ALTER TABLE event_log ADD COLUMN user_id INTEGER"),
+                ("action_id", "ALTER TABLE event_log ADD COLUMN action_id INTEGER"),
+                ("action_name", "ALTER TABLE event_log ADD COLUMN action_name TEXT DEFAULT ''"),
             ]:
                 if not await _has_column(conn, "event_log", col):
                     await conn.execute(text(sql))
                     logger.info("Added %s column to event_log table", col)
 
+            # Backfill user_id from notification_tracker for legacy rows.
+            # Safe to run repeatedly: only touches rows where user_id is still NULL.
+            await conn.execute(text("""
+                UPDATE event_log
+                SET user_id = (
+                    SELECT user_id FROM notification_tracker
+                    WHERE notification_tracker.id = event_log.notification_tracker_id
+                )
+                WHERE event_log.user_id IS NULL
+                  AND event_log.notification_tracker_id IS NOT NULL
+            """))
+
         # Add commands_config to telegram_bot if missing
         if await _has_table(conn, "telegram_bot"):
             if not await _has_column(conn, "telegram_bot", "commands_config"):
@@ -129,6 +144,14 @@ async def migrate_schema(engine: AsyncEngine) -> None:
                 )
                 logger.info("Added command_template_config_id column to command_config table")
 
+        # Add allowed_album_ids (per-chat album scope) to command_tracker_listener
+        if await _has_table(conn, "command_tracker_listener"):
+            if not await _has_column(conn, "command_tracker_listener", "allowed_album_ids"):
+                await conn.execute(
+                    text("ALTER TABLE command_tracker_listener ADD COLUMN allowed_album_ids TEXT")
+                )
+                logger.info("Added allowed_album_ids column to command_tracker_listener table")
+
         # Add date_only_format to template_config if missing
         if await _has_table(conn, "template_config"):
             if not await _has_column(conn, "template_config", "date_only_format"):