Cobra
56801c6baa
- P1-1: Fix lock ordering deadlock by establishing canonical order (known_lock → departure_lock → occupancy_lock). Refactor on_arrival() to acquire locks in correct order. Fix send_departure_alert() callback to hold occupancy_lock while updating state. - P1-2: Add _normalize_mac() helper to strip colons/hyphens, apply to load_personal_macs_from_env() and is_personal_device() for consistent MAC comparison. - P1-3: Remove occupancy_lock acquisition from _update_occupancy_state_unlocked() - callers must hold lock. Update all callers to acquire occupancy_lock before calling. All individual tests pass. Fixes allow on_arrival() and timer callbacks to execute without deadlock.