deploy linting and first unit test maybe

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "vite",
     "build": "vite build",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest run --coverage"
   },
   "dependencies": {
     "@google/genai": "^1.28.0",
@@ -18,12 +19,17 @@
     "supabase": "^2.54.11"
   },
   "devDependencies": {
+    "@testing-library/react": "^16.0.0",
+    "@testing-library/jest-dom": "^6.4.8",
     "@types/node": "^22.14.0",
     "@vitejs/plugin-react": "^5.0.0",
+    "@vitest/coverage-v8": "^2.0.4",
     "autoprefixer": "^10.4.19",
+    "jsdom": "^27.1.0",
     "postcss": "^8.4.40",
     "tailwindcss": "^3.4.10",
     "typescript": "~5.8.2",
-    "vite": "^6.2.0"
+    "vite": "^6.2.0",
+    "vitest": "^2.0.4"
   }
 }