feat(commands): drop tracker counts from /status

trackers_active / trackers_total are per-provider aggregates — once the
rest of /status is scoped to the chat's album set (total_albums and
last_event both filtered by the derived scope), leaving tracker counts
in would leak info about trackers this chat has no visibility into.

- _cmd_status no longer emits trackers_active / trackers_total.
- Immich default status templates (en, ru) just show Albums + Last event.
- Variable catalog updated so the template editor stops suggesting the
  removed vars for the Immich /status slot.

packages/core/src/notify_bridge_core/templates/command_defaults/en/status.jinja2

@@ -1,4 +1,3 @@
 📊 Status
-Trackers: {{ trackers_active }}/{{ trackers_total }} active
 Albums: {{ total_albums }}
-Last event: {{ last_event }}
+Last event: {{ last_event }}

packages/core/src/notify_bridge_core/templates/command_defaults/ru/status.jinja2

@@ -1,4 +1,3 @@
 📊 Статус
-Трекеры: {{ trackers_active }}/{{ trackers_total }} активных
 Альбомы: {{ total_albums }}
-Последнее событие: {{ last_event }}
+Последнее событие: {{ last_event }}

packages/server/src/notify_bridge_server/api/command_template_configs.py

@@ -138,13 +138,11 @@ async def get_command_variables(
     # --- Immich-specific ---
     immich = {
         "status": {
-            "description": "/status tracker summary",
+            "description": "/status tracker summary (scoped to this chat)",
             "variables": {
                 **common_vars,
-                "trackers_active": "Number of active trackers",
-                "trackers_total": "Total tracker count",
-                "total_albums": "Total tracked albums",
-                "last_event": "Last event timestamp string",
+                "total_albums": "Tracked albums visible to this chat",
+                "last_event": "Last event timestamp string (scoped to this chat's albums)",
             },
         },
         "albums": {

packages/server/src/notify_bridge_server/commands/immich/handler.py

@@ -29,8 +29,6 @@ async def _cmd_status(
     allowed_album_ids: set[str] | None = None,
 ) -> dict[str, Any]:
     trackers = await get_trackers_for_provider(provider.id)
-    active = sum(1 for t in trackers if t.enabled)
-    total = len(trackers)
 
     # Count only albums visible to this chat. Without the scope filter,
     # /status in a restricted chat leaks the full album count across the
@@ -41,13 +39,17 @@ async def _cmd_status(
             if allowed_album_ids is None or aid in allowed_album_ids:
                 total_albums += 1
 
+    # Last-event timestamp is already scoped — see get_last_event_str, which
+    # filters EventLog by collection_id against allowed_album_ids.
     tracker_ids = [t.id for t in trackers]
     last_str = await get_last_event_str(
         tracker_ids, allowed_album_ids=allowed_album_ids,
     )
 
+    # Tracker counts (``trackers_active`` / ``trackers_total``) are a
+    # per-provider aggregate — they'd leak info about trackers this chat
+    # has no visibility into once we've scoped everything else.  Omitted.
     return {
-        "trackers_active": active, "trackers_total": total,
         "total_albums": total_albums, "last_event": last_str,
     }