fix: resolve merge conflict

package.json

@@ -11,7 +11,10 @@
     "astro": "astro",
     "lint": "biome lint ./src",
     "format": "biome format ./src",
-    "prepare": "husky"
+    "prepare": "husky",
+    "test": "npx vitest run",
+    "test:coverage": "npx vitest --coverage",
+    "test:playwright": "npx playwright test"
   },
   "dependencies": {
     "@astrojs/check": "^0.9.4",
@@ -42,8 +45,17 @@
   },
   "devDependencies": {
     "@biomejs/biome": "^1.9.4",
+    "@playwright/test": "^1.52.0",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/jsdom": "^21.1.7",
+    "@types/node": "^22.15.18",
+    "@vitest/coverage-istanbul": "^3.1.3",
     "husky": "^9.1.7",
+    "jsdom": "^26.1.0",
     "lint-staged": "^15.2.7",
+    "vite-tsconfig-paths": "^5.1.4",
+    "vitest": "^3.1.3",
     "wrangler": "^3.94.0"
   },
   "lint-staged": {