chore: add test infrastructure and static export config

package.json

@@ -6,21 +6,33 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "eslint"
+    "lint": "eslint",
+    "test": "vitest run",
+    "test:watch": "vitest"
   },
   "dependencies": {
+    "clsx": "^2.1.1",
     "next": "16.2.4",
     "react": "19.2.4",
-    "react-dom": "19.2.4"
+    "react-dom": "19.2.4",
+    "tailwind-merge": "^3.5.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@testing-library/dom": "^10.4.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^14.6.1",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
+    "@vitejs/plugin-react": "^6.0.1",
     "eslint": "^9",
     "eslint-config-next": "16.2.4",
+    "jsdom": "^29.0.2",
     "tailwindcss": "^4",
-    "typescript": "^5"
+    "typescript": "^5",
+    "vite": "^8.0.8",
+    "vitest": "^4.1.4"
   }
 }