## What changed
- Remove the legacy selection-list appearance and use shared full-width selection, filled tabs, wrapped hints, and separate overflow rows throughout.
- Give resume and fork pickers separate toolbar and search rows. Collapse spacing on short screens, keep the focused toolbar control visible on narrow screens, and prioritize labeled primary actions in the footer.
- Apply shared selection styling and contrast-aware text colors to session rows and metadata. Clear inherited selection colors and reversal from the transcript loading overlay.
- Preserve clipped-header notices alongside results in small approval dialogs.
## Testing
Add rendering assertions and snapshots for session selection contrast, reversed selection, loading overlay styles, compact metadata and action labels, and keyboard-focused toolbar visibility. Extend approval clipping snapshots to shorter terminal heights.
GitOrigin-RevId: 6e34b14f5528baf33e97ff6cf746107a1bbe69ab