feat: introdce store

frontend/package.json

@@ -5,9 +5,12 @@
   "scripts": {
     "dev": "vite",
     "build": "vite build",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest",
+    "test:run": "vitest run"
   },
   "dependencies": {
+    "zustand": "^5.0.2",
     "@radix-ui/react-avatar": "^1.1.11",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-context-menu": "^2.2.16",
@@ -44,6 +47,7 @@
     "tailwindcss-animate": "^1.0.7"
   },
   "devDependencies": {
+    "@testing-library/react": "^16.0.0",
     "@types/node": "^25.3.3",
     "@types/react": "^18.0.0",
     "@types/react-dom": "^18.0.0",
@@ -53,6 +57,7 @@
     "shadcn": "^4.0.0",
     "tailwindcss": "^3.4.0",
     "typescript": "^5.0.0",
-    "vite": "^7.3.1"
+    "vite": "^7.3.1",
+    "vitest": "^2.1.6"
   }
 }