Add fully functional Location Snap controls:
- Toggle button (Enabled/Disabled) with blue/gray color coding
- 5 snap value buttons: 1cm, 5cm, 10cm, 50cm, 1m
- Selected button highlighted in blue with bold text
- Disabled appearance when snap is off (50% opacity)
- Wire up to appConfigInstance.setGridSnap()
- Update UI from config observable changes
Fix layout issues:
- Change texture aspect ratio from 2048x2048 to 2048x1536 (4:3) to match plane dimensions
- Add adaptHeightToChildren to section containers for proper auto-sizing
- Add horizontal alignment to button containers
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Co-Authored-By: Claude <noreply@anthropic.com>
Michael Mainguy
5889a1ed79