bug(core): Ensure storage is initialized early, even if config is not.

integration-tests/resume_repro.responses

@@ -0,0 +1 @@
+{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"text":"Session started."}],"role":"model"},"finishReason":"STOP","index":0}]}]}

integration-tests/resume_repro.test.ts

@@ -0,0 +1,42 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import { TestRig } from './test-helper.js';
+import * as path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+describe('resume-repro', () => {
+  let rig: TestRig;
+
+  beforeEach(() => {
+    rig = new TestRig();
+  });
+
+  afterEach(async () => await rig.cleanup());
+
+  it('should be able to resume a session without "Storage must be initialized before use"', async () => {
+    const responsesPath = path.join(__dirname, 'resume_repro.responses');
+    await rig.setup('should be able to resume a session', {
+      fakeResponsesPath: responsesPath,
+    });
+
+    // 1. First run to create a session
+    await rig.run({
+      args: 'hello',
+    });
+
+    // 2. Second run with --resume latest
+    // This should NOT fail with "Storage must be initialized before use"
+    const result = await rig.run({
+      args: ['--resume', 'latest', 'continue'],
+    });
+
+    expect(result).toContain('Session started');
+  });
+});

packages/cli/src/gemini.tsx

@@ -510,6 +510,12 @@ export async function main() {
       projectHooks: settings.workspace.settings.hooks,
     });
     loadConfigHandle?.end();
+
+    // Initialize storage immediately after loading config to ensure that
+    // storage-related operations (like listing or resuming sessions) have
+    // access to the project identifier.
+    await config.storage.initialize();
+
     adminControlsListner.setConfig(config);
 
     if (config.isInteractive() && config.storage && config.getDebugMode()) {

packages/cli/src/gemini_cleanup.test.tsx

@@ -77,6 +77,7 @@ vi.mock('./config/config.js', () => ({
     getSandbox: vi.fn(() => false),
     getQuestion: vi.fn(() => ''),
     isInteractive: () => false,
+    storage: { initialize: vi.fn().mockResolvedValue(undefined) },
   } as unknown as Config),
   parseArguments: vi.fn().mockResolvedValue({}),
   isDebugMode: vi.fn(() => false),
@@ -195,6 +196,7 @@ describe('gemini.tsx main function cleanup', () => {
       getEnableHooks: vi.fn(() => false),
       getHookSystem: () => undefined,
       initialize: vi.fn(),
+      storage: { initialize: vi.fn().mockResolvedValue(undefined) },
       getContentGeneratorConfig: vi.fn(),
       getMcpServers: () => ({}),
       getMcpClientManager: vi.fn(),

packages/cli/src/test-utils/mockConfig.ts

@@ -20,6 +20,7 @@ export const createMockConfig = (overrides: Partial<Config> = {}): Config =>
     setTerminalBackground: vi.fn(),
     storage: {
       getProjectTempDir: vi.fn().mockReturnValue('/tmp/gemini-test'),
+      initialize: vi.fn().mockResolvedValue(undefined),
     },
     getDebugMode: vi.fn(() => false),
     getProjectRoot: vi.fn(() => '/'),