744563e87f
- Add ping() and health() methods to BdDaemonClient for connection verification - Implement _health_check_client() to verify cached client connections - Add _reconnect_client() with exponential backoff (0.1s, 0.2s, 0.4s, max 3 retries) - Update _get_client() to health-check before returning cached clients - Automatically detect and remove stale connections from pool - Add comprehensive test suite with 14 tests covering all scenarios - Handle daemon restarts, upgrades, and long-idle connections gracefully Amp-Thread-ID: https://ampcode.com/threads/T-2366ef1b-389c-4293-8145-7613037c9dfa Co-authored-by: Amp <amp@ampcode.com>