feat: add OpenAI and Qwen OAuth auth support to Zed ACP integration (#678)

- Add USE_OPENAI and QWEN_OAUTH authentication methods to GeminiAgent's authMethods array
- Enables Zed editor integration to support all available authentication options
- Add test case for QWEN_OAUTH authentication configuration
- Maintains backward compatibility with existing Google authentication methods

This allows Zed users to authenticate using:
- OpenAI API key (requires OPENAI_API_KEY environment variable)
- Qwen OAuth (2000 daily requests with OAuth2 flow)
- Existing Google authentication methods (unchanged)

packages/cli/src/validateNonInterActiveAuth.test.ts

@@ -126,6 +126,18 @@ describe('validateNonInterActiveAuth', () => {
     expect(refreshAuthMock).toHaveBeenCalledWith(AuthType.USE_OPENAI);
   });
 
+  it('uses configured QWEN_OAUTH if provided', async () => {
+    const nonInteractiveConfig: NonInteractiveConfig = {
+      refreshAuth: refreshAuthMock,
+    };
+    await validateNonInteractiveAuth(
+      AuthType.QWEN_OAUTH,
+      undefined,
+      nonInteractiveConfig,
+    );
+    expect(refreshAuthMock).toHaveBeenCalledWith(AuthType.QWEN_OAUTH);
+  });
+
   it('uses USE_VERTEX_AI if GOOGLE_GENAI_USE_VERTEXAI is true (with GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_LOCATION)', async () => {
     process.env['GOOGLE_GENAI_USE_VERTEXAI'] = 'true';
     process.env['GOOGLE_CLOUD_PROJECT'] = 'test-project';

packages/cli/src/zed-integration/zedIntegration.ts

@@ -97,6 +97,18 @@ class GeminiAgent {
         name: 'Vertex AI',
         description: null,
       },
+      {
+        id: AuthType.USE_OPENAI,
+        name: 'Use OpenAI API key',
+        description:
+          'Requires setting the `OPENAI_API_KEY` environment variable',
+      },
+      {
+        id: AuthType.QWEN_OAUTH,
+        name: 'Qwen OAuth',
+        description:
+          'OAuth authentication for Qwen models with 2000 daily requests',
+      },
     ];
 
     return {