feat: add Electron support for headless exe service

- Add folder selection button in UI
- Add Electron main process with IPC handlers
- Support --port and --docs command line arguments
- Support --headless mode for headless service
- Add portable exe build configuration

package.json

@@ -1,12 +1,18 @@
 {
   "name": "xcengine-api-docs",
   "version": "1.0.0",
+  "description": "XCSDD - API Docs & 3D Blueprint Viewer",
+  "author": "XCSDD",
+  "main": "electron/main.mjs",
   "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "electron:dev": "vite build && electron .",
+    "electron:build": "vite build && electron-builder --win --x64",
+    "electron:start": "electron ."
   },
   "dependencies": {
     "@react-three/drei": "^10.7.7",
@@ -28,6 +34,8 @@
     "@types/three": "^0.183.1",
     "@vitejs/plugin-react": "^6.0.0",
     "autoprefixer": "^10.4.21",
+    "electron": "^33.4.0",
+    "electron-builder": "^25.1.8",
     "eslint": "^9.39.4",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.5.2",
@@ -37,5 +45,23 @@
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.56.1",
     "vite": "^8.0.0"
+  },
+  "build": {
+    "appId": "com.xuanchi.xcsdd",
+    "productName": "XCSDD",
+    "directories": {
+      "output": "release"
+    },
+    "files": [
+      "dist/**/*",
+      "electron/**/*",
+      "package.json"
+    ],
+    "win": {
+      "target": "portable"
+    },
+    "portable": {
+      "artifactName": "XCSDD.exe"
+    }
   }
 }