usmansherazi1111-hue/AR_filters ? reverse-engineered prompt

Build me a Flutter app that opens the camera and runs Jeeliz face filters inside a WebView, with a native Flutter screen around it.

I want a simple carousel at the bottom so I can switch between a few live filters without reloading the camera, like no filter, glasses, a straw hat, a tiger face effect, and a spider effect. Tapping a filter should feel instant after it has loaded once, and the app should keep the camera running the whole time. If a model or texture is still loading, show a small loading state on that filter thumbnail.

Please make it work on a real phone, not just desktop browser, and handle camera permission properly. If something goes wrong, show a clear error message instead of a blank screen. Keep the WebView bridge so Flutter can trigger filter changes and still keep the rest of the app native. If you need to look up current Flutter or WebView docs online, go ahead.