chore: upgrade AI SDK from beta to stable v6

- ai: 6.0.0-beta.124 → 6.0.3
- @ai-sdk/openai: 3.0.0-beta.74 → 3.0.1
- @ai-sdk/react: 3.0.0-beta.131 → 3.0.3

Breaking changes addressed:
- CoreMessage renamed to ModelMessage
- convertToModelMessages is now async (added await)

apps/web/package.json

@@ -11,7 +11,7 @@
     "clean": "rm -rf .next .turbo"
   },
   "dependencies": {
-    "@ai-sdk/openai": "3.0.0-beta.74",
+    "@ai-sdk/openai": "3.0.1",
     "@tpmjs/db": "workspace:*",
     "@tpmjs/env": "workspace:*",
     "@tpmjs/npm-client": "workspace:*",
@@ -22,7 +22,7 @@
     "@types/d3": "^7.4.3",
     "@types/react-syntax-highlighter": "^15.5.13",
     "@vercel/analytics": "^1.6.1",
-    "ai": "6.0.0-beta.124",
+    "ai": "6.0.3",
     "bm25": "^0.1.1",
     "d3": "^7.9.0",
     "next": "^16.0.8",