chore(deps): upgrade to Next.js 16, Vitest 4, and Node.js 24

BREAKING CHANGES:
- Upgrade Next.js from 15.1.6 to 16.0.4
- Use Webpack instead of Turbopack for compatibility with server-side modules
- Upgrade Node.js requirement to >=24.0.0

FEATURES:
- Upgrade Vitest to 4.0.13 with improved testing capabilities
- Update all vitest-related packages (@vitest/ui, @vitest/coverage-v8)
- Upgrade react-syntax-highlighter to 16.1.0
- Update node-cron to 4.2.1
- Update lucide-react to 0.554.0

SECURITY:
- Resolve glob command injection vulnerability (CVE) via v10.5.0
- Fix all npm audit vulnerabilities (0 vulnerabilities found)
- Update prisma/client to 6.19.0
- Update all dependencies to latest secure versions

FIXES:
- Configure next.config.js for webpack with proper server-side module handling
- Update tsconfig.json for Next.js 16 compatibility (jsx: react-jsx)
- Add engines field to require Node.js >=24.0.0
- Remove deprecated webpack config in favor of Next.js 16 compatibility

package.json

@@ -4,11 +4,11 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "build": "next build",
+    "build": "next build --webpack",
     "check": "next lint && tsc --noEmit",
-    "dev": "next dev",
+    "dev": "next dev --webpack",
     "dev:server": "node server.js",
-    "dev:next": "next dev",
+    "dev:next": "next dev --webpack",
     "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "format:write": "prettier --write \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "lint": "next lint",
@@ -22,7 +22,7 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "@prisma/client": "^6.18.0",
+    "@prisma/client": "^6.19.0",
     "@radix-ui/react-dropdown-menu": "^2.1.16",
     "@radix-ui/react-slot": "^1.2.3",
     "@t3-oss/env-nextjs": "^0.13.8",
@@ -43,14 +43,14 @@
     "cron-validator": "^1.2.0",
     "dotenv": "^17.2.3",
     "jsonwebtoken": "^9.0.2",
-    "lucide-react": "^0.553.0",
-    "next": "^15.1.6",
-    "node-cron": "^3.0.3",
+    "lucide-react": "^0.554.0",
+    "next": "^16.0.4",
+    "node-cron": "^4.2.1",
     "node-pty": "^1.0.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-markdown": "^10.1.0",
-    "react-syntax-highlighter": "^15.6.6",
+    "react-syntax-highlighter": "^16.1.0",
     "refractor": "^5.0.0",
     "remark-gfm": "^4.0.1",
     "server-only": "^0.0.1",
@@ -74,10 +74,10 @@
     "@types/react": "^19.2.4",
     "@types/react-dom": "^19.2.2",
     "@vitejs/plugin-react": "^5.1.0",
-    "@vitest/coverage-v8": "^3.2.4",
-    "@vitest/ui": "^3.2.4",
+    "@vitest/coverage-v8": "^4.0.13",
+    "@vitest/ui": "^4.0.13",
     "eslint": "^9.39.1",
-    "eslint-config-next": "^15.1.6",
+    "eslint-config-next": "^16.0.4",
     "jsdom": "^27.2.0",
     "postcss": "^8.5.3",
     "prettier": "^3.5.3",
@@ -86,13 +86,16 @@
     "tailwindcss": "^4.1.17",
     "typescript": "^5.8.2",
     "typescript-eslint": "^8.46.2",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.13"
   },
   "ct3aMetadata": {
     "initVersion": "7.39.3"
   },
   "packageManager": "npm@10.9.3",
+  "engines": {
+    "node": ">=24.0.0"
+  },
   "overrides": {
     "prismjs": "^1.30.0"
   }
-}
+}