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/immich/search.py

@@ -5,17 +5,14 @@ from __future__ import annotations
 from typing import Any
 
 from ..handler import _render_cmd_template
-from .common import _format_assets
+from .common import _format_assets, build_asset_dict
 
 
 def _enrich_assets(assets: list[dict[str, Any]], asset_public_urls: dict[str, str]) -> list[dict[str, Any]]:
-    """Add public_url to assets from the pre-built map. Returns new list without mutating inputs."""
-    if not asset_public_urls:
-        return assets
+    """Normalize raw Immich assets and attach public_url from the pre-built map."""
+    pub = asset_public_urls or {}
     return [
-        {**asset, "public_url": asset_public_urls.get(asset.get("id", ""), "")}
-        if asset.get("id", "") in asset_public_urls and not asset.get("public_url")
-        else asset
+        build_asset_dict(asset, public_url=pub.get(asset.get("id", ""), ""))
         for asset in assets
     ]