Added UI readme

lib/SvelteUi/app/README.md

@@ -0,0 +1,59 @@
+# SvelteUi App
+
+Web interface for AMS Reader firmware built with Svelte 5 and Vite 6.
+
+## Development Setup
+
+### Prerequisites
+- Node.js 20.x or 22.x LTS (required for Vite 6)
+- npm
+
+### Local Development Configuration
+
+To develop against your AMS reader device, you need to configure the proxy target:
+
+1. Copy the example config file:
+   ```bash
+   cp vite.config.local.example.js vite.config.local.js
+   ```
+
+2. Edit `vite.config.local.js` and update the IP address to match your device:
+   ```javascript
+   export default {
+     proxyTarget: "http://192.168.1.100"  // Your device's IP
+   }
+   ```
+
+3. The `vite.config.local.js` file is gitignored, so your personal settings won't be committed.
+
+### Running Development Server
+
+```bash
+npm install
+npm run dev
+```
+
+The dev server will proxy API requests to your configured device IP.
+
+### Building for Production
+
+```bash
+npm run build
+```
+
+The build output will be in the `dist/` directory.
+
+## Project Structure
+
+- `src/` - Application source code
+  - `routes/` - Page components using svelte-spa-router
+  - `lib/` - Shared components and utilities
+- `public/` - Static assets (favicon, etc.)
+- `dist/` - Build output (not committed to git)
+
+## Key Technologies
+
+- **Svelte 5.17.0** - UI framework
+- **Vite 6.0.7** - Build tool
+- **svelte-spa-router 4.0.1** - Hash-based routing
+- **Tailwind CSS** - Styling