# Todo 39: Audit Turn-Relative Time

## Goal

Show every in-turn audit event with elapsed time relative to the user message that started the current turn.

## Plan

1. Add `turn_elapsed_ms` to audit details when an audit event belongs to a turn.
2. Carry the turn start timestamp into EventAgent audit work so request/response events use the same baseline.
3. Render the relative time in the audit event stream and detail header.

## Verification

- `uv run pytest tests/test_debug_runtime.py::test_runtime_audit_events_include_turn_relative_elapsed_time -q`
- `uv run pytest tests/test_websocket_api.py::test_static_audit_replay_uses_event_stream_and_detail_panel -q`
- `node --check src/agent_lab/presentation/static/app.js`
- `uv run pytest`
- `git diff --check`