feat(tui2): transcript scrollbar (auto-hide + drag)#8728
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Screen.Recording.2026-01-04.at.9.23.55.PM.mov |
Add tui-scrollbar to tui2 and introduce transcript_scrollbar. Render the scrollbar via a ratatui-core scratch buffer to bridge the pre-0.30 ratatui types.
Add a `tui-scrollbar`-based vertical scrollbar for the transcript viewport. - Reserve 2 columns (1 gap + 1 scrollbar) and plumb the reduced width through wrapping, selection/copy, and mouse handling so on-screen rendering matches interactions. - Only render the scrollbar when the view is scrolled away from the bottom (keep the reserved columns blank when pinned). - Style track/thumb using terminal fg/bg heuristics so it feels consistent with the user prompt block; in light themes the thumb is darker than the track.
Support click/drag on the transcript scrollbar track/thumb. Use tui-scrollbar's hit testing and drag interaction state, plus a small pointer-capture flag so dragging doesn't fall through into transcript selection when the view becomes pinned to bottom. Skip scrollbar hit-testing when the scrollbar is auto-hidden at bottom, so the reserved column is not an invisible interactive region. Move the interaction glue out of app.rs into transcript_scrollbar_ui. Return an explicit TranscriptScrollbarMouseHandling enum, and expand docs for reserved column layout and track/thumb theme heuristics.
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tibo-openai
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Summary
tui2usingtui-scrollbar.Notes
Testing
just fmtjust fix -p codex-tui2 --allow-no-vcscargo test -p codex-tui2