feat: add OpenAI OAuth, strict model overrides, and Gmail pull mode

src/models/openai.test.ts

@@ -1,23 +1,38 @@
 import { describe, it, expect, vi } from 'vitest';
 import { OpenAIClient } from './openai.js';
 
-// Shared mock function so we can override per-test
-const mockCreate = vi.fn().mockResolvedValue({
-  choices: [{ message: { content: 'Hello from GPT!' }, finish_reason: 'stop' }],
-  usage: { prompt_tokens: 10, completion_tokens: 5 },
-});
-
-vi.mock('openai', () => ({
-  default: vi.fn().mockImplementation(() => ({
+const { mockCreate, mockOpenAIConstructor } = vi.hoisted(() => {
+  const mockCreate = vi.fn().mockResolvedValue({
+    choices: [{ message: { content: 'Hello from GPT!' }, finish_reason: 'stop' }],
+    usage: { prompt_tokens: 10, completion_tokens: 5 },
+  });
+  const mockOpenAIConstructor = vi.fn().mockImplementation(() => ({
     chat: {
       completions: {
         create: mockCreate,
       },
     },
-  })),
+  }));
+  return { mockCreate, mockOpenAIConstructor };
+});
+
+vi.mock('openai', () => ({
+  default: mockOpenAIConstructor,
 }));
 
 describe('OpenAIClient', () => {
+  it('sets request timeout and disables SDK retries', () => {
+    new OpenAIClient({
+      apiKey: 'test-key',
+      model: 'gpt-4o',
+    });
+
+    expect(mockOpenAIConstructor).toHaveBeenCalledWith(expect.objectContaining({
+      timeout: 20_000,
+      maxRetries: 0,
+    }));
+  });
+
   it('sends messages and returns response', async () => {
     const client = new OpenAIClient({
       apiKey: 'test-key',