## Why
Composer suggestions and transient hints should preserve the draft and transcript context. Submitting a local command while reading older history should reveal its output.
## What changed
- Separate persistent status from transient footer hints in the owned transcript, sharing layout calculations for rendering, measurement, and cursor placement.
- Overlay command and mention suggestions on history without moving the composer; hide retained suggestions while transcript interactions own input.
- Show responsive, grouped shortcut help above the composer and let `Esc` dismiss it before interrupting a task or navigating history.
- Resume transcript following for submissions, slash commands, and last-response copy results while preserving the reading position during background updates.
- Reset transcript interaction state after prompt reverts and refresh retained usage information without rewriting terminal history.
## Testing
Add regression tests and snapshots for popup placement, clipped layouts, footer focus, shortcut dismissal, local-command scrolling, prompt reverts, and pagination while browsing prompts.
GitOrigin-RevId: 890147313d53f050503165a57610c381ffb93ef5
Eric Traut
de6ae71ad4