- _aux_title_configured(): returns True when provider/model/base_url is set
- _aux_title_timeout(): reads configured timeout, falls back to 15.0s default
- _generate_llm_session_title_via_aux: use_agent_model kwarg preserves old behavior
- Missing llm_invalid_aux fallback now triggers agent-model retry
- 23 new tests in tests/test_title_aux_routing.py — all pass
Co-authored-by: starship-s <starship-s@users.noreply.github.com>
