With multiple Horizon workers, ingest jobs for one entity can finish out of
order and overwrite newer state with older. The listener now stamps each message
with a µs receive time (observed_at); IngestShellyMessage applies state only when
the incoming message is newer (race-safe via a conditional update + unique guard),
and broadcasts only when applied. Added a feature test for the ordering guard.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Reworks the dashboard into a home-control view per user feedback (it is not a
server dashboard):
- Dashboard now shows home data — rooms with live device state (lights on/off,
power draw, window/door contacts, battery %), a home summary (devices online,
lights on, open contacts, low batteries), and a Warnings panel that only lists
what needs attention (offline device, open window, low battery, degraded host
service). No server internals on the dashboard.
- Server/service health (DB, Redis, Reverb, Horizon) + version info moved to a
dedicated "Host & Dienste" page (new nav item under System); dashboard surfaces
a host problem only as a warning that links there.
- New domain slice (handoff §3, mock-first §13.2): rooms/devices/entities/
device_states migrations + models (UUID route keys, R11) + DemoHomeSeeder with
Shelly-like devices incl. deliberate faults. Extracted SystemHealth service.
- Sidebar decluttered further; new x-entity-state component; full DE/EN i18n.
- Fixed R15 findings: .env.example now ships matching non-empty dev defaults for
DB_PASSWORD and Reverb keys so a fresh `cp .env.example .env` boots cleanly.
Verified: R12 21/21 in headless Chromium (0 console errors, 0 failed requests,
breakpoints 375/768/1280); 10 feature tests green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>