feat: migrate AI to llama and use local db

package.json

@@ -27,7 +27,7 @@
     "@radix-ui/react-label": "^2.0.2",
     "@radix-ui/react-slot": "^1.0.2",
     "@vercel/analytics": "^1.1.1",
-    "ai": "^5.0.68",
+    "openai": "^4.77.0",
     "axios": "^1.12.0",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.0.0",
@@ -41,7 +41,7 @@
     "resend": "^3.1.0",
     "tailwind-merge": "^2.1.0",
     "tailwindcss-animate": "^1.0.7",
-    "zod": "^4.1.12"
+    "zod": "^3.23.8"
   },
   "devDependencies": {
     "@commitlint/cli": "^18.4.3",