## Summary
- preserve baseline streaming behavior (smooth mode still commits one
line per 50ms tick)
- extract adaptive chunking policy and commit-tick orchestration from
ChatWidget into `streaming/chunking.rs` and `streaming/commit_tick.rs`
- add hysteresis-based catch-up behavior with bounded batch draining to
reduce queue lag without bursty single-frame jumps
- document policy behavior, tuning guidance, and debug flow in rustdoc +
docs
## Testing
- just fmt
- cargo test -p codex-tui
Clamp frame draw notifications in the `FrameRequester` scheduler so we
don't redraw more frequently than a user can perceive.
This applies to both `codex-tui` and `codex-tui2`, and keeps the
draw/dispatch loops simple by centralizing the rate limiting in a small
helper module.
- Add `FrameRateLimiter` (pure, unit-tested) to clamp draw deadlines
- Apply the limiter in the scheduler before emitting `TuiEvent::Draw`
- Use immediate redraw requests for scroll paths (scheduler now
coalesces + clamps)
- Add scheduler tests covering immediate/delayed interactions
Introduces an `EventBroker` between the crossterm `EventStream` source
and the consumers in the TUI. This enables dropping + recreating the
`crossterm_events` without invalidating the consumer.
Dropping and recreating the crossterm event stream enables us to fully
relinquish `stdin` while the app keeps running. If the stream is not
dropped, it will continue to read from `stdin` even when it is not
actively being polled, potentially stealing input from other processes.
See
[here](https://www.reddit.com/r/rust/comments/1f3o33u/myterious_crossterm_input_after_running_vim/?utm_source=chatgpt.com)
and [here](https://ratatui.rs/recipes/apps/spawn-vim/) for details.
### Tests
Added tests for new `EventBroker` setup, existing tests pass, tested
locally.
Pull FrameRequester out of tui.rs into its own module and make a
FrameScheduler struct. This is effectively an Actor/Handler approach
(see https://ryhl.io/blog/actors-with-tokio/). Adds tests and docs.
Small refactor of pending_viewport_area logic.
- Moved the unix-only suspend/resume logic into a dedicated job_control
module housing SuspendContext, replacing scattered cfg-gated fields and
helpers in tui.rs.
- Tui now holds a single suspend_context (Arc-backed) instead of
multiple atomics, and the event stream uses it directly for Ctrl-Z
handling.
- Added detailed docs around the suspend/resume flow, cursor tracking,
and the Arc/atomic ownership model for the 'static event stream.
- Renamed the process-level SIGTSTP helper to suspend_process and the
cursor tracker to set_cursor_y to better reflect their roles.
Josh McKinney