Expand README with architecture and setup details

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "proxywarden",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "description": "Standalone Windows desktop proxy management app for ProxyWarden.",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "tauri": "tauri"
+  },
+  "dependencies": {
+    "@tauri-apps/api": "^2.0.0",
+    "@tauri-apps/plugin-dialog": "^2.7.1",
+    "lucide-react": "^1.23.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
+  },
+  "devDependencies": {
+    "@tauri-apps/cli": "^2.0.0",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "@vitejs/plugin-react": "^5.0.0",
+    "typescript": "^5.8.0",
+    "vite": "^7.0.0"
+  }
+}