- Add BD_RPC_DEBUG=1 for lightweight timing logs to stderr
- Log socket path, socket exists check, dial timing, health check timing
- Improve daemon status message when lock not held
- Helps field triage of connection issues without verbose daemon logs
- Fixes bd-j7e2
Improvements:
1. Added top-level panic recovery in runDaemonLoop
- Captures stack trace and logs to daemon.log
- Writes daemon-error file with crash details for user visibility
- Cleans up PID file on panic
2. Replaced os.Exit calls with return statements where possible
- Allows deferred cleanup to run (lock release, socket removal, etc)
- Improves graceful shutdown on errors
3. Enhanced stopDaemon forced-kill path
- Removes stale socket file after process.Kill()
- Prevents socket artifacts from accumulating
4. Added integration tests for crash recovery
Closes bd-vcg5
