fix(ci): exclude packages dir from Next.js TypeScript compilation

The tsconfig include pattern `**/*.ts` was picking up CLI package sources
during Next.js build, causing missing `commander` module errors in CI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tsconfig.json

@@ -36,6 +36,7 @@
   ],
   "exclude": [
     "node_modules",
-    "docs"
+    "docs",
+    "packages"
   ]
 }