feat: add admin media label search

apps/api/app/media_catalog.py

@@ -92,7 +92,10 @@ def published_file(digest: str) -> tuple[Path, str] | None:
     return target, str(media_type or "application/octet-stream")
 
 
-def review_assets(entity_type: str | None = None, status: str | None = None, media_role: str | None = None) -> list[dict]:
+def review_assets(
+    entity_type: str | None = None, status: str | None = None, media_role: str | None = None,
+    query: str | None = None,
+) -> list[dict]:
     manifest = json.loads((MEDIA_ROOT / "manifest.json").read_text(encoding="utf-8"))
     result = []
     for item in manifest.get("assets", []):
@@ -103,6 +106,8 @@ def review_assets(entity_type: str | None = None, status: str | None = None, med
             continue
         if media_role and item.get("media_role") != media_role:
             continue
+        if query and query.casefold() not in str(item.get("label") or "").casefold():
+            continue
         digest = str(item.get("sha256") or "")
         if len(digest) != 64 or not item.get("local_path"):
             continue