Initialize `result` and `run_status` variables before the try block
to prevent UnboundLocalError in the finally block when exceptions
occur early in execution (e.g., during AgentLoop.load()).
Previously, if an exception was raised before `result` was assigned
inside the try block, the finally block would fail when trying to
access `result`, masking the original error with an UnboundLocalError.
This fix ensures the finally block can safely check and use these
variables regardless of when/where an exception occurs.
9bf10b4761