deploy linting and first unit test maybe

package.json

@@ -7,7 +7,8 @@
     "dev": "vite",
     "build": "vite build",
     "preview": "vite preview",
-    "test": "vitest run --coverage"
+    "test": "vitest run --coverage",
+    "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0"
   },
   "dependencies": {
     "@google/genai": "^1.28.0",
@@ -22,9 +23,14 @@
     "@testing-library/react": "^16.0.0",
     "@testing-library/jest-dom": "^6.4.8",
     "@types/node": "^22.14.0",
+    "@typescript-eslint/eslint-plugin": "^7.18.0",
+    "@typescript-eslint/parser": "^7.18.0",
     "@vitejs/plugin-react": "^5.0.0",
     "@vitest/coverage-v8": "^2.0.4",
     "autoprefixer": "^10.4.19",
+    "eslint": "^8.57.0",
+    "eslint-plugin-react-hooks": "^4.6.2",
+    "eslint-plugin-react-refresh": "^0.4.9",
     "jsdom": "^27.1.0",
     "postcss": "^8.4.40",
     "tailwindcss": "^3.4.10",