curo1305
3ed6dd494f
- Add generate_presigned_put_url and stat_object abstract methods to StorageBackend ABC - Extend MinIOBackend with dual client (self._client internal + self._public_client public) - MinIOBackend.__init__ accepts optional public_endpoint param (RESEARCH.md Finding 3) - generate_presigned_put_url uses self._public_client for browser-resolvable URLs - stat_object uses self._client.stat_object and returns .size (authoritative, T-03-05) - get_storage_backend() passes public_endpoint=settings.minio_public_endpoint - config.py adds minio_public_endpoint field (RESEARCH.md Finding 3) - docker-compose.yml: MINIO_API_CORS_ALLOW_ORIGIN on minio service (T-03-09) - docker-compose.yml: MINIO_PUBLIC_ENDPOINT on backend service - docker-compose.yml: new celery-beat service (RESEARCH.md Finding 10)