feat: add multi-session desktop workspace

ui/package.json

@@ -12,6 +12,8 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc && vite build",
+    "test": "vitest run",
+    "test:watch": "vitest",
     "preview": "vite preview",
     "tauri": "tauri",
     "tauri:release": "tauri build --no-bundle"
@@ -25,10 +27,15 @@
   },
   "devDependencies": {
     "@tauri-apps/cli": "^2",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^14.6.4",
     "@types/react": "^19.1.8",
     "@types/react-dom": "^19.1.6",
     "@vitejs/plugin-react": "^4.6.0",
+    "jsdom": "^26.1.0",
     "typescript": "~5.8.3",
-    "vite": "^7.0.4"
+    "vite": "^7.0.4",
+    "vitest": "^3.2.7"
   }
 }