v0.40.0 — Multi-gateway + compatibility guard

Manage multiple chargers from one Add-on 🎉

Add a gateways: list in the Add-on Configuration tab (one entry per charger — name, ip, auth_user, auth_pass) to run several Pulsars from a single install. A charger switcher appears in the header on every page; your selection persists for the browser session and every dashboard / sessions / OTA / Charge-Assistant call targets the chosen gateway. Existing single-gateway installs are unaffected (the legacy gateway_ip fields still work when the list is empty).

⚠️ OTA is per-charger — the switcher decides which gateway a firmware upload flashes. Check the header before dragging a .bin in.

Clearer Charge Assistant errors

If the Wallbox Gateway integration is installed but older than 0.18.0 (no get_config/set_config services), the page now says "Update the Wallbox Gateway integration to ≥ 0.18.0" instead of the misleading "Home Assistant link unavailable."

Compatibility

Requires the HACS Wallbox Gateway integration ≥ 0.18.0. Update both together.

Update (fixes "Assistant link unavailable")

The homeassistant_api grant is issued at install time, so if the Add-on was ever sideloaded a restart isn't enough — uninstall → reload the store → install v0.40.0 → start, then hard-refresh.