Rewrite the TUI section for the post-Jul-10 feature avalanche:
- Layout: five regions (ChatPanel + Vertical(StatusPanel, TodoPanel) +
  InputBox + bottom StatusBar); SessionsPanel removed, sessions via modal
  picker. StatusPanel now shows Profile/Session/Model/Connection/Backend/
  Theme/hint (no Tokens/Iter).
- StatusBar: activity indicator + live elapsed timer + context-fill gauge.
- TodoPanel: live, sorted (in_progress → pending → failed/skipped → done),
  subagent-isolated.
- Per-message widgets, markdown rendering, bounded history render cost,
  session history load on resume, WebSocket auto-reconnect.
- Slash-command hints (Up/Down/Enter/Tab), command palette (Ctrl+P),
  permission dialog, !shell passthrough, @file refs.
- Compression summary card, request-duration metadata, model_info display.
- Keybindings table (Ctrl+P / Ctrl+X C|T|Q / Esc).
- Commands: add aliases (clear, resume/continue, exit/q, save); fix /clear
  (alias of /new), /sessions (picker), /switch (hybrid); add /compact.
- --resume <session_id> flag + post-exit resume hint.
- Full event rendering list (stream_start/end/stopped, model_info,
  todo_updated, compression_started, context_compressed, …).
- Full file map (ws_bridge, chat_model, screens/, permissions, shell_runner,
  file_refs, duration, …).

navi_code.md left as-is (already current with bounded autonomy).

Co-Authored-By: Claude <noreply@anthropic.com>