I'm excited for the Capacitor SDK that's on the roadmap. Any rough ballpark estimate of when that might be available?

I haven't used Capacitor but I will soon. Is it possible to use the web SDK in a mobile Capacitor app or is there something about the webview browser environment that breaks the normal functioning of Powersync on the web?

It may be possible to use the web SDK directly in a Capacitor app - it could be sufficient for initial development, but I wouldn't recommend that for production use. It would use the webview's IndexedDB as for persistence, which is not ideal for a native app. For the Capactitor SDK, we would use native SQLite, which would have better performance and more control over storage.