v0.8.28

Bug fixes

• TypeError: 'NoneType' object can't be awaited on every setup/restart (#3): frontend.async_register_built_in_panel is a synchronous @callback function in Home Assistant core, not a coroutine, despite the async_ prefix in its name. The integration was incorrectly await-ing it, which raised this error on every setup. It was silently caught by error handling, so the panel still worked, but the error was logged on every single restart and the internal panel_registered flag never got set, causing the same failed registration attempt (and log entry) every time. Fixed by removing the erroneous await.