## Why
Terminal status previously collapsed completed and failed turns into `idle` and reported blocking prompts without a reason. Blocking detection also depended on terminal title settings.
## What changed
- Emit `done` and `error` through OSC 7501 for live turn results, retaining them until deliberate keyboard, paste, or mouse input acknowledges them. Mouse movement does not acknowledge results.
- Classify blocking requests with `kind=permission`, `kind=question`, or `kind=auth`, including requests hidden behind another view or delayed while typing, independently of terminal title settings.
- Keep pending follow-up work and active goals `working`. Treat interrupted turns and replayed results as `idle` rather than new results.
- Preserve the existing iTerm2 OSC 21337 labels and indicators, mapping `done` and `error` to `Idle`.
## Testing
Add lifecycle and input-acknowledgment tests covering approvals, completion, failure, interruption, replay, pending follow-ups, and active goals. Extend blocking-request assertions and terminal protocol snapshots for the new states and reasons.
GitOrigin-RevId: 90bad1d54d8b3b9e3cec66fbd3bf3df0c42b995b
## Why
Lifecycle status reporting was limited to direct iTerm2 sessions. OSC 7501 lets other terminals receive Codex's program state.
## What changed
- Emit OSC 7501 with `app=codex` and states `idle`, `working`, or `blocked` whenever stdout is a terminal, including multiplexed sessions. Report `blocked` when user action is required.
- Continue emitting iTerm2's OSC 21337 status and bounded activity details in direct iTerm2 sessions.
- Clear status before handing the terminal to an external program, as well as on suspension and exit, and re-emit the current state after returning.
## Testing
Add coverage for OSC 7501 encoding, combined iTerm2 output, clearing both protocols, and protocol selection across terminal and multiplexer environments. Update lifecycle tests and status snapshots for the new protocol.
GitOrigin-RevId: 6d2a6885687b0e7af825e954fab72db0765c9a07
Channing Conger