- Introduced `app.config.ts` for UI configuration with color and card styles.
- Added `TheHeader.vue` component for consistent header layout with logo and navigation.
- Updated `nuxt.config.ts` to include UI Pro license configuration.
- Adjusted header height in `main.css` for improved layout.
- Enhanced `index.vue` to utilize `TheHeader` and implement tabs for scene graph and performance monitoring.

…lipboard functionality

- Introduced reactive state for inline editing of inspector values.
- Added methods for incrementing, decrementing, and updating boolean values.
- Implemented clipboard copy functionality for values and property paths.
- Updated `getInspectorGraph` to include property paths for better context.
- Enhanced `InspectorNode` interface to support full property paths.

…ement and UI feedback

- Updated `onUpdateModelValue` function to include type annotations for better TypeScript support.
- Introduced `itemsForSceneGraph` computed property to streamline scene graph data handling.
- Added a conditional alert in the template to inform users when no scene is available.
- Enhanced `SceneGraphObject` interface to include a unique `key` property for better identification.
- Updated `getInspectorGraph` function to set `defaultExpanded` property for root nodes, improving UI behavior.
- Refactored `useDevtoolsHook` to handle empty scene cases more gracefully.

…h interaction

- Introduced `createHighlightMesh` function to generate a highlight mesh for selected objects.
- Enhanced `updateSelectedObject` method to manage highlight mesh addition and removal.
- Added `HighlightMesh` class for pulsing effect on highlighted objects.
- Updated scene graph component to improve user interaction with item selection.
- Adjusted template structure for better responsiveness and interaction handling.