Handle session.state.changed in provider runtime ingestion

- Map runtime session state transitions to orchestration session status
- Persist error reasons from `session.state.changed` error events
- Add coverage for waiting/error/stopped/ready transition handling
b39480a3fbJulius Marminge committed on 3/6/2026, 2:13:20 AMparent0ccc40a
2 files changedLine totals unavailable