Prevent hard crashing on update notifier fail. (#1254)

packages/cli/src/ui/utils/updateCheck.ts

@@ -9,6 +9,7 @@ import { readPackageUp } from 'read-package-up';
 import process from 'node:process';
 
 export async function checkForUpdates(): Promise<string | null> {
+  try {
     // read-package-up looks for the closest package.json from cwd
     const pkgResult = await readPackageUp({ cwd: process.cwd() });
     if (!pkgResult) {
@@ -31,5 +32,9 @@ export async function checkForUpdates(): Promise<string | null> {
       return `Gemini CLI update available! ${notifier.update.current} → ${notifier.update.latest}\nRun npm install -g ${packageJson.name} to update`;
     }
 
+    return null;
+  } catch (e) {
+    console.warn('Failed to check for updates: ' + e);
     return null;
   }
+}