## What changed
Check the selected thread's app-server metadata before resuming it in the TUI. Reject Guardian review threads with a clear error and suggest `codex resume <parent_thread_id>` when a parent session is available. Preserve existing resume behavior if the metadata read fails.
## Testing
Add a regression test for Guardian thread rejection and the parent-session hint. Update daemon startup coverage to select a saved session when testing `resume`.
GitOrigin-RevId: 64b43bb24b5e24eec14c8204c6e15232387dade8