fix: restore world cup seed entrypoint

platform/backend/app/analytics/worldcup_seed.py

@@ -0,0 +1,22 @@
+"""Production-safe seed compatibility entrypoint.
+
+The current platform ingests World Cup fixtures, odds, calendar caches, and news
+through scheduled workers. This module intentionally does not create synthetic
+match rows; it only keeps the Docker Compose dependency gate idempotent so the
+runtime services can start after a clean deployment.
+"""
+
+from __future__ import annotations
+
+import os
+
+
+def main() -> None:
+    database_url = os.getenv("DATABASE_URL", "")
+    if not database_url:
+        raise RuntimeError("DATABASE_URL is required for the seed compatibility gate.")
+    print("worldcup_seed compatibility gate passed; live workers own data ingestion.")
+
+
+if __name__ == "__main__":
+    main()