fix(oauth): full callback URL, Google clientId, refresh, and review follow-ups

- Pass full OAuth callback URL through auth-server for openid-client validation
- Composio + Google flows: duplicate-callback guard; preserve timeout cleanup
- Persist and expose Google clientId via oauth:getState; hydrate UI from useConnectors
- getAccessToken returns refreshed credentials; clearer errors and missing-state handling
- IPC schema: per-provider userId + clientId
- Docs: google-setup redirect URI and troubleshooting

Made-with: Cursor

apps/x/packages/shared/src/ipc.ts

@@ -252,6 +252,7 @@ const ipcSchemas = {
         connected: z.boolean(),
         error: z.string().nullable().optional(),
         userId: z.string().optional(),
+        clientId: z.string().nullable().optional(),
       })),
     }),
   },