Companion WebView now supports file inputs and downloads, and apps
opened in the in-app tab get a proper loading splash and a footer
control bar matching the web app-session bar.
- onShowFileChooser wired to an ActivityResultLauncher so <input
type=file> opens the system file browser (kiosk + in-app tab)
- DownloadListener: http(s) via DownloadManager (forwarding session
cookies), blob: via JS->base64->MediaStore, data: decoded inline
- in-app tab: app-icon + progress loading splash (eager favicon
fetch, upgraded via onReceivedIcon)
- footer controls (back/forward/refresh/open/close) matched to the
web AppSession mobile bar, with the same SVG glyphs as drawables
- bump to 0.4.8 (versionCode 12)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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