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/models.py

@@ -467,6 +467,11 @@ class CommandTrackerListener(SQLModel, table=True):
     )
     listener_type: str  # e.g. "telegram_bot"
     listener_id: int
+    # Optional per-chat album scope. None = inherit from tracker (use all).
+    # When set, only these album/collection ids are queryable from this chat.
+    allowed_album_ids: list[str] | None = Field(
+        default=None, sa_column=Column(JSON, nullable=True),
+    )
     created_at: datetime = Field(default_factory=_utcnow)
 
 
@@ -476,6 +481,10 @@ class EventLog(SQLModel, table=True):
     __tablename__ = "event_log"
 
     id: int | None = Field(default=None, primary_key=True)
+    # Owner. Indexed for the dashboard events query.  Nullable only because
+    # historical rows (pre-user_id column) may have no owner; new rows always
+    # set this directly.
+    user_id: int | None = Field(default=None, foreign_key="user.id", index=True)
     # Python attr stays as tracker_id for backward compat; DB column is notification_tracker_id
     tracker_id: int | None = Field(
         default=None,
@@ -484,6 +493,13 @@ class EventLog(SQLModel, table=True):
         sa_column_kwargs={"name": "notification_tracker_id"},
     )
     tracker_name: str = Field(default="")
+    # Links an event back to an Action when the event was emitted by the
+    # action runner (``event_type`` starts with ``action_``).  Null for
+    # notification-tracker events.
+    action_id: int | None = Field(
+        default=None, foreign_key="action.id", index=True,
+    )
+    action_name: str = Field(default="")
     provider_id: int | None = Field(default=None, index=True)
     provider_name: str = Field(default="")
     event_type: str = Field(index=True)