Update Next.js to v15, overhaul ESLint, minor reformat, misc

package.json

@@ -12,6 +12,7 @@
     "@directus/sdk": "^18.0.3",
     "@headlessui/react": "^1.7.7",
     "@kodingdotninja/use-tailwind-breakpoint": "^0.0.5",
+    "@next/eslint-plugin-next": "^15.1.1",
     "@tailwindcss/typography": "^0.5.8",
     "@tanstack/react-query": "^4.16.0",
     "@tippyjs/react": "^4.2.6",
@@ -20,7 +21,7 @@
     "@trpc/react-query": "^10.0.0",
     "@trpc/server": "^10.0.0",
     "@vercel/analytics": "^0.1.6",
-    "next": "13.0.2",
+    "next": "^15.1.1",
     "plaiceholder": "^2.5.0",
     "react": "18.2.0",
     "react-dom": "18.2.0",
@@ -32,22 +33,20 @@
     "sharp": "^0.32.1",
     "superjson": "1.9.1",
     "usehooks-ts": "^2.9.1",
-    "zod": "^3.18.0"
+    "zod": "^3.24.1"
   },
   "devDependencies": {
-    "@types/node": "^18.0.0",
-    "@types/react": "^18.0.14",
-    "@types/react-dom": "^18.0.5",
-    "@typescript-eslint/eslint-plugin": "^5.33.0",
-    "@typescript-eslint/parser": "^5.33.0",
+    "typescript": "^5",
+    "@types/node": "^20",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "postcss": "^8",
+    "tailwindcss": "^3.4.1",
+    "eslint": "^9",
+    "eslint-config-next": "15.1.1",
+    "@eslint/eslintrc": "^3",
     "autoprefixer": "^10.4.7",
-    "eslint": "^8.26.0",
-    "eslint-config-next": "13.0.2",
-    "postcss": "^8.4.14",
-    "prettier": "^2.7.1",
-    "prettier-plugin-tailwindcss": "^0.1.13",
-    "tailwindcss": "^3.2.0",
-    "typescript": "^4.8.4"
+    "prettier-plugin-tailwindcss": "^0.1.13"
   },
   "ct3aMetadata": {
     "initVersion": "6.11.3"