Add ExtensionLoader interface, use that on Config object (#12116)

packages/cli/src/ui/commands/memoryCommand.test.ts

@@ -13,6 +13,7 @@ import { MessageType } from '../types.js';
 import type { LoadedSettings } from '../../config/settings.js';
 import {
   getErrorMessage,
+  SimpleExtensionLoader,
   type FileDiscoveryService,
 } from '@google/gemini-cli-core';
 import type { LoadServerHierarchicalMemoryResponse } from '@google/gemini-cli-core/index.js';
@@ -72,6 +73,7 @@ describe('memoryCommand', () => {
           config: {
             getUserMemory: mockGetUserMemory,
             getGeminiMdFileCount: mockGetGeminiMdFileCount,
+            getExtensionLoader: () => new SimpleExtensionLoader([]),
           },
         },
       });
@@ -176,6 +178,7 @@ describe('memoryCommand', () => {
         getWorkingDir: () => '/test/dir',
         getDebugMode: () => false,
         getFileService: () => ({}) as FileDiscoveryService,
+        getExtensionLoader: () => new SimpleExtensionLoader([]),
         getExtensions: () => [],
         shouldLoadMemoryFromIncludeDirectories: () => false,
         getWorkspaceContext: () => ({