fix(commands): enrich search assets, surface variables for all command slots

- UI: command-template-configs now resolves slot variables against the
  active provider first (varsRef[provider_type][slot]) before falling back
  to shared entries, so provider-specific slots like /search, /status,
  /repos, /issues, /boards show the Variables button and autocomplete.
- Backend: /search, /find, /person, /place now normalize raw Immich API
  responses through build_asset_dict, extracting city/country from
  exifInfo and mapping isFavorite -> is_favorite so templates render
  location and favorite indicators.
- Telegram: extract build_telegram_asset_entry into a shared helper so
  the notification dispatcher and command media groups agree on video
  typing and /video/playback URLs; videos no longer render as still
  thumbnails in /latest /random /favorites media mode.
- Commands: send_media_group now reuses the same Telegram file_id caches
  as the notification dispatcher, avoiding re-upload churn for repeated
  commands.

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

@@ -393,30 +393,38 @@ async def send_media_group(
     reply_to_message_id: int | None = None,
     session: aiohttp.ClientSession | None = None,
 ) -> None:
-    """Send media items via TelegramClient.send_notification."""
+    """Send media items via TelegramClient.send_notification.
+
+    ``media_items`` must already be in TelegramClient asset format — each
+    entry contains ``type`` (``"photo"``/``"video"``/``"document"``),
+    ``url``, optional ``cache_key``, and optional ``headers``. Provider
+    command handlers build this format directly (via
+    ``build_telegram_asset_entry``) so videos keep their ``"video"`` type
+    and point at a real video URL instead of a still thumbnail.
+
+    Reuses the same Telegram file_id caches as the notification dispatcher
+    so repeated ``/latest`` / ``/random`` commands don't re-upload bytes
+    for assets Telegram has already seen. If the cache hasn't been
+    initialized (no data dir configured) we fall through to a plain
+    upload — identical behavior to the notification path.
+    """
     if not media_items:
         return
 
-    # Convert command handler media format to TelegramClient asset format
-    assets = []
-    for item in media_items:
-        assets.append({
-            "type": "photo",
-            "url": item.get("thumbnail_url", ""),
-            "cache_key": item.get("asset_id", ""),
-            "headers": {"x-api-key": item.get("api_key", "")},
-        })
-
-    # Build caption from first item
-    captions = [item.get("caption", "") for item in media_items if item.get("caption")]
-    caption = "\n".join(captions) if captions else None
-
     if session is None:
         from ..services.http_session import get_http_session
         session = await get_http_session()
-    client = TelegramClient(session, bot_token)
+
+    from ..services.watcher import _get_telegram_caches
+    url_cache, asset_cache = await _get_telegram_caches()
+
+    client = TelegramClient(
+        session, bot_token,
+        url_cache=url_cache,
+        asset_cache=asset_cache,
+    )
     result = await client.send_notification(
-        chat_id, assets=assets, caption=caption,
+        chat_id, assets=media_items,
         reply_to_message_id=reply_to_message_id,
         chat_action=None,
     )