Implements a GLB demo generator for a steel I-beam (IPE 200) and a UI button to load it as a sample model. Adds generateDemoBeamGLB utility, integrates with Index.tsx to generate and load the demo GLB, and updates UI state to handle loading.
X-Lovable-Edit-ID: edt-5a8e10ef-027a-40be-9853-f8bc55818d44
Adds WebXR industrial inspection UI with 3D model viewer and XR session scaffolding:
- Implemented ModelViewer.tsx using Three.js (GLTF loading, grid, orbit controls)
- Enabled Viewer page to display model info and XR entry
- Added XRSession page with placeholder passthrough and manual placement logic
- Introduced Zustand store for model state and tuning parameters
- Updated App routing to include /viewer and /xr routes
- Updated index UI to support GLB import and progress indicators
- Integrated design system and Tailwind config enhancements
- Updated index.css with industrial theme and font stacks
X-Lovable-Edit-ID: edt-62015b02-7bf3-4880-954d-fc8aceb69418
gpt-engineer-app[bot]