Fix dependencies

package.json

@@ -8,7 +8,7 @@
     "check": "next lint && tsc --noEmit",
     "dev": "next dev",
     "dev:server": "node server.js",
-    "dev:next": "next dev --turbo",
+    "dev:next": "next dev",
     "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "format:write": "prettier --write \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "lint": "next lint",
@@ -44,7 +44,7 @@
     "dotenv": "^17.2.3",
     "jsonwebtoken": "^9.0.2",
     "lucide-react": "^0.553.0",
-    "next": "^16.0.1",
+    "next": "^15.1.6",
     "node-cron": "^3.0.3",
     "node-pty": "^1.0.0",
     "react": "^19.0.0",
@@ -77,7 +77,7 @@
     "@vitest/coverage-v8": "^3.2.4",
     "@vitest/ui": "^3.2.4",
     "eslint": "^9.38.0",
-    "eslint-config-next": "^16.0.1",
+    "eslint-config-next": "^15.1.6",
     "jsdom": "^27.0.1",
     "postcss": "^8.5.3",
     "prettier": "^3.5.3",