## What changed
- Monitor session lock state on Linux, macOS, and Windows, checking the initial state before starting audio.
- Abort local media on lock, including while connecting, retrying, or running a parked call, and display why voice stopped.
- Keep lock monitoring across startup retries and ignore stale lock notifications after a call restarts.
- Document lock behavior and platform limitations. After unlocking, users must run `/voice` to start a new call.
## Testing
Add lifecycle tests for already-locked startup, parked-call media shutdown, stale notifications, and locks during retry cleanup, plus a macOS test for password grace-period expiry.
GitOrigin-RevId: fea4b4a7903a48727c546ee3b7bd06e957a9b885
