fix: fallback on incomplete current user (#91)

src/main.py

@@ -79,6 +79,8 @@ async def context() -> JSONResponse:
         )
         if not isinstance(user_data, dict):
             raise ValueError("Gitea current-user response was not an object")
+        if not all(field in user_data for field in ("id", "login")):
+            raise ValueError("Gitea current-user response did not include id and login")
     except Exception as e:
         error_message = (
             f"Gitea context request timed out after {CONTEXT_TIMEOUT_SECONDS:g}s"