Release v2.3.0: TOML config migration + debug HTTP API BREAKING CHANGE: Configuration format migrated from YAML to TOML Features: - TOML configuration format (probe.yaml → probe.toml) - Debug HTTP API for troubleshooting (/debug/metrics endpoint) - Enhanced bootstrap wizard with debug API configuration - GPU debug logging for troubleshooting GPU metrics Migration required for existing users - see CHANGELOG.md for guide.