feat: 不要ファイルの削除とリファクタリング

Author: TkymHrt

package.json

@@ -14,7 +14,6 @@
   "dependencies": {
     "@supabase/ssr": "0.9.0",
     "@supabase/supabase-js": "2.99.1",
-    "classnames": "^2.5.1",
     "clsx": "^2.1.1",
     "driver.js": "^1.4.0",
     "framer-motion": "^12.36.0",
@@ -27,6 +26,7 @@
     "react-aria-components": "^1.16.0",
     "react-dom": "^19.0.0",
     "react-icons": "^5.6.0",
+    "server-only": "^0.0.1",
     "tailwind-merge": "^3.3.0",
     "tailwind-variants": "^3.2.2",
     "tailwindcss-react-aria-components": "^2.0.1"
@@ -41,6 +41,7 @@
     "oxfmt": "^0.40.0",
     "oxlint": "^1.55.0",
     "postcss": "^8",
+    "postcss-load-config": "^6.0.1",
     "tailwindcss": "^4.2.1",
     "tailwindcss-animate": "^1.0.7",
     "typescript": "^5.9.3"