Complete the final phase of VR configuration panel implementation by adding
Label Rendering Mode selection controls. This allows users to configure how
diagram labels are rendered in the VR environment.
Changes:
- Add radio-style buttons for 4 label rendering modes:
- Fixed: Static orientation
- Billboard: Always faces camera (default)
- Dynamic: Coming soon (disabled)
- Distance-based: Coming soon (disabled)
- Implement disabled styling for future modes (gray background, 50% opacity)
- Wire up to appConfigInstance.setLabelRenderingMode()
- Update UI when config changes from external sources (2D modal)
- Add updateLabelModeButtonStates() for visual state management
This completes all 7 phases of VRCONFIGPLAN.md implementation.
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Co-Authored-By: Claude <noreply@anthropic.com>