Refac: Centralize storage file management (#4078)

Co-authored-by: Taylor Mullen <ntaylormullen@google.com>

packages/core/src/tools/ls.test.ts

@@ -17,6 +17,7 @@ vi.mock('fs', () => ({
   },
   statSync: vi.fn(),
   readdirSync: vi.fn(),
+  mkdirSync: vi.fn(),
 }));
 import { LSTool } from './ls.js';
 import { Config } from '../config/config.js';

packages/core/src/tools/memoryTool.test.ts

@@ -18,7 +18,19 @@ import * as os from 'os';
 import { ToolConfirmationOutcome } from './tools.js';
 
 // Mock dependencies
-vi.mock('fs/promises');
+vi.mock(import('fs/promises'), async (importOriginal) => {
+  const actual = await importOriginal();
+  return {
+    ...actual,
+    mkdir: vi.fn(),
+    readFile: vi.fn(),
+  };
+});
+
+vi.mock('fs', () => ({
+  mkdirSync: vi.fn(),
+}));
+
 vi.mock('os');
 
 const MEMORY_SECTION_HEADER = '## Gemini Added Memories';

packages/core/src/tools/memoryTool.ts

@@ -15,7 +15,7 @@ import {
 import { FunctionDeclaration } from '@google/genai';
 import * as fs from 'fs/promises';
 import * as path from 'path';
-import { homedir } from 'os';
+import { Storage } from '../config/storage.js';
 import * as Diff from 'diff';
 import { DEFAULT_DIFF_OPTIONS } from './diffOptions.js';
 import { tildeifyPath } from '../utils/paths.js';
@@ -96,7 +96,7 @@ interface SaveMemoryParams {
 }
 
 function getGlobalMemoryFilePath(): string {
-  return path.join(homedir(), GEMINI_CONFIG_DIR, getCurrentGeminiMdFilename());
+  return path.join(Storage.getGlobalGeminiDir(), getCurrentGeminiMdFilename());
 }
 
 /**