Adds home screen widgets (Small 2×2, Medium 4×2, Large 4×4) using
react-native-android-widget. Widgets display upcoming tasks sorted by
urgency, support tap-to-complete and deep linking into the app, and
refresh on every task mutation + every 30 minutes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
