refactor(deps): migrate to nuxt v4

package.json

@@ -43,21 +43,21 @@
   "devDependencies": {
     "@nuxt/ui": "^2.20.0",
     "@nuxtjs/google-fonts": "^3.2.0",
-    "@pinia/nuxt": "^0.5.2",
+    "@pinia/nuxt": "^0.11.3",
     "@tailwindcss/typography": "^0.5.13",
     "@types/markdown-it": "^13.0.9",
     "@types/node": "^25.2.2",
-    "@vite-pwa/nuxt": "^0.5.0",
-    "@vueuse/core": "^10.11.1",
-    "@vueuse/nuxt": "^10.11.1",
-    "dayjs-nuxt": "^2.1.9",
+    "@vite-pwa/nuxt": "^1.1.1",
+    "@vueuse/core": "^14.2.0",
+    "@vueuse/nuxt": "^14.2.0",
+    "dayjs-nuxt": "^2.1.11",
     "oxfmt": "^0.28.0",
     "oxlint": "^1.43.0",
     "sass": "^1.77.8",
     "typescript": "^5.9.3"
   },
   "peerDependencies": {
-    "dayjs": "^1.11.12",
+    "dayjs": "^1.11.19",
     "tailwindcss": "^3.4.7"
   }
 }