# Todo 32: Session UI

## Status

done

## Goal

Expose persisted sessions in the debug console so users can create/load sessions, replay chat messages and audit logs, and inspect call/turn/session usage.

## Scope

- Add sidebar session controls for creating, refreshing, selecting, and loading sessions.
- Send the selected `session_id` in the first WebSocket request while preserving lightweight follow-up turn messages.
- Handle `session_started.session_id` from the backend.
- Add a separate audit replay panel.
- Add session usage displays for aggregate, turn, and model-call usage.
- Keep live round stats separate from session aggregate usage.

## Verification

- Static UI tests cover session controls, replay panels, session API calls, `session_id` WebSocket payloads, and usage render hooks.
- WebSocket tests still prove multi-turn reuse behavior.
- `node --check src/agent_lab/presentation/static/app.js` passes.
- `uv run pytest tests/test_websocket_api.py -q` passes: 34 tests.
- `uv run pytest` passes: 66 tests.