This changes the `/review` escape path so `Esc` no longer behaves like
the normal queued-follow-up interrupt flow while a review is running.
Steering is not currently supported in `/review` mode, without this
change users are able to attempt a steer but it leads to a crash (see
#22815). If the user has already tried to send additional guidance
during `/review`, the TUI now keeps the review running and shows a
warning that steer messages are not supported in that mode, while still
pointing users to `Ctrl+C` if they actually want to cancel. It also adds
regression coverage for the review-specific warning behavior. When users
do cancel with Ctrl+C during /review, the TUI now tolerates the
active-turn race that can happen during review handoff, and any queued
steer messages are restored to the composer instead of being discarded.
- Special-case `Esc` during an active `/review` when follow-up steer
input is pending or has already been deferred.
- Show a clear warning instead of interrupting the running review.
- Make the Ctrl+C cancel path during /review resilient to active-turn
races, while preserving any queued steer text by restoring it to the
composer.
- Add review-mode test coverage for the warning path.
## Testing
1. Start a `/review` with a diff large enough that the review stays
active for more than a few seconds.
2. While the review is still running, type a follow-up / steer message,
submit it, and then press `Esc`.
Before: `Esc` causes the TUI to close abruptly.
After: the review keeps running and the transcript shows a warning that
steer messages are not supported during `/review`, with guidance to use
`Ctrl+C` if you want to cancel.
3. Press `Ctrl+C` if you actually want to stop the review.
Before: (after restarting the test since Pt. 2 crashed) this is the
intentional cancellation path.
After: this remains the intentional cancellation path, and any queued
follow-up steer text is restored to the composer instead of being lost.
## Note:
`/review` mode explicitly does not support steering at this time (as
noted in `turn_processer.rs`, if we want to explore that in the future
this code will need to be modified). This change keeps unsupported steer
attempts from crashing the TUI and preserves queued follow-up text if
the user cancels with Ctrl+C.
canvrno-oai
8a299fb704