Installed APK sequence was system splash -> white WebView -> web splash -> home. The
activity now holds the system splash (core-splashscreen) until the page calls
TadrisinoAndroid.appReady(), after its first non-boot screen; released after 10s or on a
main-frame load error so a dead site shows the WebView error, not an endless splash.
Older APKs have no appReady and are unaffected. Debug build compiles; not run on a device.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
