ruohki
966b47edbc
- SignalFlags struct wraps Arc<AtomicBool> for SIGHUP/SIGTERM - register_signals() registers SIGHUP and SIGTERM only (not SIGINT) - SIGINT deliberately excluded — handled via crossterm key events for double-press Ctrl+C - should_terminate() polls flag with Ordering::Relaxed for event loop use - init_logging() is a Phase 1 no-op stub with LIFE-03 documentation