chore(deps): update dependency tailwindcss to v4

Author: renovate[bot]

package.json

@@ -100,7 +100,7 @@
     "knip": "^5.50.0",
     "postcss": "^8.4.38",
     "prettier": "3.7.4",
-    "tailwindcss": "^3.4.3",
+    "tailwindcss": "^4.0.0",
     "tsx": "4.21.0",
     "typescript": "5.9.3",
     "typescript-eslint": "8.48.1",