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/services/notifier.py

@@ -298,13 +298,82 @@ async def send_to_receiver(target: NotificationTarget, receiver_config: dict, me
 
 
 async def send_test_notification(target: NotificationTarget, locale: str = "en") -> dict:
-    """Send a simple test message. For broadcast targets, fans out to all children."""
+    """Send a simple test message. For broadcast targets, fans out to all children.
+
+    For Telegram targets, per-receiver locale (TargetReceiver.locale or
+    TelegramChat.language_override/language_code) is resolved individually so
+    each chat receives the message in its own configured language.
+    """
     if target.type == "broadcast":
         return await _send_broadcast_test(target, locale)
+    if target.type == "telegram":
+        return await _send_telegram_test_per_receiver(target, default_locale=locale)
     message = _get_test_message(locale, target.type)
     return await send_to_target(target, message)
 
 
+async def _send_telegram_test_per_receiver(
+    target: NotificationTarget, default_locale: str = "en",
+) -> dict:
+    """Send a test message to each Telegram receiver in its own resolved locale."""
+    from notify_bridge_core.notifications.telegram.client import TelegramClient
+
+    from ..database.models import TargetReceiver, TelegramChat
+    from .http_session import get_http_session
+
+    bot_token = target.config.get("bot_token")
+    bot_id = target.config.get("bot_id")
+    disable_preview = target.config.get("disable_url_preview", False)
+    if not bot_token:
+        return {"success": False, "error": "Missing bot_token"}
+
+    engine = get_engine()
+    async with AsyncSession(engine) as session:
+        recv_rows = (await session.exec(
+            select(TargetReceiver).where(
+                TargetReceiver.target_id == target.id,
+                TargetReceiver.enabled == True,
+            )
+        )).all()
+        if not recv_rows:
+            return {"success": False, "error": "No receivers configured"}
+
+        # Resolve per-receiver locale
+        chat_ids = [str(r.config.get("chat_id", "")) for r in recv_rows if r.config.get("chat_id")]
+        chat_locale_map: dict[str, str] = {}
+        if bot_id and chat_ids:
+            chat_rows = (await session.exec(
+                select(TelegramChat).where(
+                    TelegramChat.bot_id == bot_id,
+                    TelegramChat.chat_id.in_(chat_ids),
+                )
+            )).all()
+            for chat in chat_rows:
+                override = (
+                    getattr(chat, "language_override", "") or
+                    getattr(chat, "language_code", "") or ""
+                )
+                if override:
+                    chat_locale_map[chat.chat_id] = override[:2].lower()
+
+    http = await get_http_session()
+    client = TelegramClient(http, bot_token)
+    results: list[dict] = []
+    for r in recv_rows:
+        chat_id = str(r.config.get("chat_id", ""))
+        if not chat_id:
+            continue
+        explicit = getattr(r, "locale", "") or ""
+        locale = explicit or chat_locale_map.get(chat_id) or default_locale
+        message = _get_test_message(locale[:2].lower(), "telegram")
+        results.append(await client.send_message(
+            chat_id=chat_id,
+            text=message,
+            disable_web_page_preview=bool(disable_preview),
+        ))
+    return _aggregate(results)
+
+
 async def _send_broadcast_test(target: NotificationTarget, locale: str) -> dict:
     """Send test notifications to all child targets of a broadcast target."""
     child_ids = target.config.get("child_target_ids", [])