Integrate request body size limit middleware

main.py

@@ -35,6 +35,7 @@ from app.copilot import api as copilot
 from app.core.config import Settings, get_settings
 from app.core.exceptions import MediaAPIError
 from app.core.logger import configure_logging, get_logger, request_id_context
+from app.core.request_limits import RequestBodyLimitMiddleware
 from app.core.response import ErrorBody, ErrorResponse
 from app.mcp.server import create_mcp_server
 from app.projects import api as projects
@@ -138,6 +139,10 @@ def create_app(settings: Settings | None = None) -> FastAPI:
         rate_limiter=container.rate_limiter,
         audit=container.audit,
     )
+    application.add_middleware(
+        RequestBodyLimitMiddleware,
+        max_bytes=active_settings.max_upload_size,
+    )
     if active_settings.allowed_cors_origins:
         application.add_middleware(
             CORSMiddleware,