feat(extensions): implement cryptographic integrity verification for extension updates (#21772)

packages/cli/src/test-utils/AppRig.tsx

@@ -30,6 +30,7 @@ import {
   IdeClient,
   debugLogger,
   CoreToolCallStatus,
+  IntegrityDataStatus,
 } from '@google/gemini-cli-core';
 import {
   type MockShellCommand,
@@ -118,6 +119,12 @@ class MockExtensionManager extends ExtensionLoader {
   getExtensions = vi.fn().mockReturnValue([]);
   setRequestConsent = vi.fn();
   setRequestSetting = vi.fn();
+  integrityManager = {
+    verifyExtensionIntegrity: vi
+      .fn()
+      .mockResolvedValue(IntegrityDataStatus.VERIFIED),
+    storeExtensionIntegrity: vi.fn().mockResolvedValue(undefined),
+  };
 }
 
 // Mock GeminiRespondingSpinner to disable animations (avoiding 'act()' warnings) without triggering screen reader mode.