fix: docs: add mobile testing checklist (fixes #935) (#1019)

Co-authored-by: Pangea 3 <pangea@autonomous.ai>

Author: sebmuehlbauer

docs/MOBILE_TESTING.md

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+# Mobile Testing Checklist
+
+## Prerequisites
+- [ ] App builds successfully
+- [ ] No console errors
+- [ ] All dependencies installed
+
+## Functional Testing
+
+### Navigation
+- [ ] All menu items work
+- [ ] Back button works correctly
+- [ ] Deep links work
+- [ ] Tab navigation functions
+- [ ] Breadcrumbs work (if applicable)
+
+### Authentication
+- [ ] Login works
+- [ ] Logout works
+- [ ] Password reset works
+- [ ] Remember me functions
+- [ ] Session persists correctly
+- [ ] Auth redirects work
+
+### Forms
+- [ ] All inputs are accessible
+- [ ] Validation works
+- [ ] Error messages display
+- [ ] Success messages display
+- [ ] File uploads work
+- [ ] Auto-complete works
+- [ ] Keyboard appears for correct input type
+
+### Content
+- [ ] All pages load correctly
+- [ ] Images load and scale
+- [ ] Videos play
+- [ ] PDFs open
+- [ ] External links work
+- [ ] Share functionality works
+
+## UI/UX Testing
+
+### Touch Interactions
+- [ ] Buttons respond to touch
+- [ ] Tap targets are 44x44px minimum
+- [ ] No hover-only features
+- [ ] Swipe gestures work (if used)
+- [ ] Pull-to-refresh works (if used)
+- [ ] Long press actions work (if used)
+
+### Layout
+- [ ] No horizontal scroll
+- [ ] Content fits viewport
+- [ ] Proper spacing
+- [ ] Correct alignment
+- [ ] Readable font sizes (16px+ body)
+- [ ] Cards/lists display correctly
+
+### Responsive Design
+- [ ] Works on small phones (320px)
+- [ ] Works on large phones (414px)
+- [ ] Works on tablets (768px+)
+- [ ] Landscape orientation works
+- [ ] Portrait orientation works
+- [ ] Rotation handles gracefully
+
+### Visual
+- [ ] Colors consistent
+- [ ] Branding correct
+- [ ] Icons display properly
+- [ ] Loading states show
+- [ ] Empty states show
+- [ ] No visual glitches
+
+## Performance Testing
+
+### Load Times
+- [ ] Initial load < 3 seconds
+- [ ] Page transitions smooth
+- [ ] Images load progressively
+- [ ] No blocking operations
+
+### Offline Support
+- [ ] App handles no connection
+- [ ] Offline indicator shows
+- [ ] Cached content available
+- [ ] Queue syncs when online
+
+### Memory
+- [ ] No memory leaks
+- [ ] Scrolling smooth
+- [ ] Animations smooth (60fps)
+- [ ] No crashes after extended use
+
+## Compatibility Testing
+
+### iOS
+- [ ] iPhone SE (small screen)
+- [ ] iPhone 12/13 (standard)
+- [ ] iPhone 14 Pro Max (large)
+- [ ] iPad (tablet)
+- [ ] iOS 14+ (minimum supported)
+
+### Android
+- [ ] Small phone (5")
+- [ ] Medium phone (6")
+- [ ] Large phone (6.5"+)
+- [ ] Tablet
+- [ ] Android 8+ (minimum supported)
+
+### Browsers
+- [ ] Mobile Safari (iOS)
+- [ ] Chrome (Android)
+- [ ] Samsung Internet
+- [ ] Firefox mobile
+
+## Accessibility Testing
+
+### Screen Readers
+- [ ] VoiceOver works (iOS)
+- [ ] TalkBack works (Android)
+- [ ] All elements announced
+- [ ] Navigation logical
+
+### Vision
+- [ ] Zoom to 200% works
+- [ ] Text remains readable
+- [ ] Contrast sufficient