## Why
Unanswered questions from the previous prompt remain visible after a new follow-up. Clear them when the user moves on to new work.
## What changed
- Clear pending questions when a model prompt is submitted or queued, and when a review starts. Clear again on queued prompt delivery to remove questions that arrived while waiting.
- Retain seen question IDs so replay cannot restore cleared questions.
- Track question answers separately from prompts through queues, retries, thread restoration, and reconnects so delivering an answer preserves other pending questions.
- Preserve questions for local commands and rejected submissions.
## Testing
Add regression tests for immediate and queued follow-ups, replay suppression, slash prompts, reviews, rejected input, and answer preservation across delivery and recovery. Add a snapshot of the composer after questions are cleared.
GitOrigin-RevId: 76353c6ee098c1505678ac43b1dc6391ea9fa738
2808a9c348