scrollback-first tui_v3 rounds out v2 parity across this session:
- /export: v2-aligned subcommands (clip/file/all/legacy); clip writes to the
real OS clipboard via existing copy() (pbcopy/clip.exe/wl-copy/xclip/xsel);
picker→file prefills an editable filename
- tool-call folding: per-turn fold ported from v2 fold_turns; Ctrl+O toggles;
incremental repaint folds turn N the moment turn N+1 marker streams in
- ask_user: focus-cycle model (↑↓ moves between candidates and the input box,
caret hidden on candidate focus); multi-select is checkbox-only with no
input box; [x]/[ ] ASCII checkboxes instead of Unicode ballot glyphs
- plan card: v2 _refresh_planbar port — 5-row budget, current-step line,
complete/placeholder states with grace periods, mtime-cached reads
- attachments: bracketed-paste, image/file placeholders, multi-line paste
aligned to v2 behaviour
- i18n: zh/en layer merged inline (was a separate tui_v3_i18n.py) so the
frontend ships as one drop-in module
pyproject: add prompt_toolkit + pillow to the `ui` extra.
yanghang