Adds optional live status checking per service (not just per node),
requested as a follow-up to issue #196.
Backend:
- New check_service / check_services: HTTP(S) GET for web services, TCP
connect otherwise; UDP and port-less non-web services stay 'unknown'.
- New scheduler job 'service_checks', independent interval (default 300s),
added/removed live via set_service_checks_enabled.
- Settings gain service_check_enabled + service_check_interval (>=30s),
persisted to scan_config.json. New WS message type 'service_status'.
Frontend:
- Live per-service status overlay in canvasStore (not persisted, so it
never round-trips through canvas save), fed by the WS message.
- DetailPanel + canvas node service rows: offline service turns red
(#f85149), otherwise keeps its category colour.
- SettingsModal: toggle + interval input (default 300s / 5 min).
Off by default — no behaviour change until enabled.
ha-relevant: yes
All settings (auth credentials, scanner ranges, status_checker interval)
now live in a single .env file via pydantic-settings. config.yml and
config.yml.example are deleted.
- Settings: add auth_username, auth_password_hash, scanner_ranges,
status_checker_interval; add load_overrides()/save_overrides() for
persisting runtime changes to data/scan_config.json
- auth.py: read credentials directly from settings
- scan.py: read ranges/interval from settings; write-back via save_overrides()
- scheduler.py: read interval directly from settings
- main.py: call settings.load_overrides() at startup
- docker-compose.yml: remove config.yml volume mount, add new env vars
- conftest.py: set settings fields directly instead of writing a temp config.yml
- test_status.py: 8 tests covering WS auth rejection/acceptance, broadcast_status (dead connection removal, no response_time, no connections), broadcast_scan_update
- test_scheduler.py: 9 tests covering _load_interval variants, _run_status_checks DB update/last_seen/error handling, start/stop lifecycle
- scheduler.py: reinitialize AsyncIOScheduler on each start() to avoid stale event loop across test restarts
Pouzor