test: add vitest and testing-library dependencies

frontend/package.json

@@ -6,7 +6,10 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "test": "vitest",
+    "test:ui": "vitest --ui",
+    "test:coverage": "vitest run --coverage"
   },
   "dependencies": {
     "axios": "^1.15.0",
@@ -23,13 +26,20 @@
     "tesseract.js": "^7.0.0"
   },
   "devDependencies": {
+    "@testing-library/jest-dom": "^6.0.0",
+    "@testing-library/react": "^14.0.0",
+    "@testing-library/user-event": "^14.0.0",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
+    "@vitejs/plugin-react": "^4.0.0",
+    "@vitest/ui": "^1.0.0",
     "eslint": "^9",
     "eslint-config-next": "15.0.0",
+    "jsdom": "^23.0.0",
     "postcss": "^8",
     "tailwindcss": "^3.4.1",
-    "typescript": "^5"
+    "typescript": "^5",
+    "vitest": "^1.0.0"
   }
 }