fix: add logging for received request headers in API key retrieval

main.py

@@ -70,6 +70,7 @@ async def multi_module_bug_localization(request: MultiModuleRequest, ctx: Contex
 
     # Get per-user API key from MCP Context
     user_request: Request = get_http_request()
+    logger.info("Received request headers: {}".format(user_request.headers))
     defect_solver_api_key = user_request.headers.get("DS-API-Key", None)
     logger.info("defect_solver_api_key: {}".format(defect_solver_api_key) )
     logger.info(