iOS Safari has no beforeinstallprompt API, so the portal's Install
button (?install=1) silently did nothing there. IosInstallHint now
shows Share -> Add to Home Screen steps on Safari, or a prompt to
switch to Safari first if opened in another iOS browser/in-app
webview (those can't install PWAs on iOS at all).
Also added apple-mobile-web-app-title + apple-touch-icon so the
home screen icon isn't a page screenshot, and added the
beforeinstallprompt handler that was missing entirely (Android
Install button did nothing either).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Ports the state machine, retry/backoff, and guest-override detection from
the retired homeassistant-newbook-heating-component, without depending on
Home Assistant. Backend (Fastify/pg) + frontend (React/Vite/TS) following
standard stack conventions; LXC 128 (127 was already taken by utilities).
MHI/Midea/Daikin/boiler drivers and the shared MQTT broker (LXC 104) are
later phases/infra, not included here.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
