Add a Node.js script that sets up LEGO Island game assets via symlinks:
- Accepts source path interactively or via --path/-p flag
- Case-insensitive file matching for cross-platform compatibility
- Validates all required files before making changes
- Supports optional extra/ and textures/ folders
- Includes --force/-f flag to skip deletion confirmation
Updates README with new setup step and script documentation.
- Skip service worker registration when running in dev mode to avoid 404 errors
- Add isle.js and isle.wasm copy step to production build
- Add build:ci script for CI builds without required wasm files
- Replace vanilla JS with Svelte 5 components
- Add Vite build system with Terser optimization
- Reorganize assets into src/ and public/ directories
- Update README with setup instructions
