Implemented animated holographic signs near each portal based on portals.json data.
- Created to manage sign creation and animation using Three.js ShaderMaterial for a holographic effect and TextGeometry for portal names.
- Updated to ensure is loaded as a module.
- Modified to import and utilize , including fetching and calling .
- **Note:** Due to persistent truncation of content, assumptions were made regarding the existence of a global object () and the structure of the main animation loop. A placeholder function was added to to call , assuming is used for rendering. Further integration might be needed if the actual structure differs.
