automatic gemini-2.5-flash fallback

fallback from gemini-2.5-pro quota limit error to gemini-2.5-flash automatically.

'/analyze' --> '/ask-gemini', functionality is identical. '/analyze' will still recommend '/ask-gemini', workflow is unchanged.

Author: jamubc

package-lock.json

@@ -47,6 +47,7 @@
   ],
   "dependencies": {
     "@modelcontextprotocol/sdk": "^0.5.0",
+    "ai": "^4.3.17",
     "chalk": "^5.0.0",
     "inquirer": "^9.0.0",
     "zod": "^3.22.0"