Release v2.4.0: Telemetry & Usage Analytics Features: - get_telemetry_stats tool for viewing usage analytics - Automatic success/failure rate tracking - Error categorization and duration tracking - Append-only JSONL storage (race-condition safe) Testing: - 15 new telemetry tests - 361 total tests passing - No breaking changes Documentation: - Removed v3 pivot research (staying committed to v2) - Updated CHANGELOG with telemetry examples