add Session.test.ts

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

docs/users/configuration/settings.md

@@ -275,6 +275,7 @@ If you are experiencing performance issues with file searching (e.g., with `@` c
 | `tools.truncateToolOutputThreshold`  | number            | Truncate tool output if it is larger than this many characters. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | `25000`     | Requires restart: Yes                                                                                                                                                                                                                                |
 | `tools.truncateToolOutputLines`      | number            | Maximum lines or entries kept when truncating tool output. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `1000`      | Requires restart: Yes                                                                                                                                                                                                                                |
 | `tools.autoAccept`                   | boolean           | Controls whether the CLI automatically accepts and executes tool calls that are considered safe (e.g., read-only operations) without explicit user confirmation. If set to `true`, the CLI will bypass the confirmation prompt for tools deemed safe.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | `false`     |                                                                                                                                                                                                                                                      |
+| `tools.experimental.skills`           | boolean           | Enable experimental Agent Skills feature                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | `false`     |                                                                                                                                                                                                                                                      |
 
 #### mcp
 

docs/users/features/skills.md

@@ -11,12 +11,29 @@ This guide shows you how to create, use, and manage Agent Skills in **Qwen Code*
 ## Prerequisites
 
 - Qwen Code (recent version)
-- Run with the experimental flag enabled:
+
+## How to enable
+
+### Via CLI flag
 
 ```bash
 qwen --experimental-skills
 ```
 
+### Via settings.json
+
+Add to your `~/.qwen/settings.json` or project's `.qwen/settings.json`:
+
+```json
+{
+  "tools": {
+    "experimental": {
+      "skills": true
+    }
+  }
+}
+```
+
 - Basic familiarity with Qwen Code ([Quickstart](../quickstart.md))
 
 ## What are Agent Skills?

integration-tests/acp-integration.test.ts

@@ -311,9 +311,9 @@ function setupAcpTest(
     }
   });
 
-  it('returns modes on initialize and allows setting approval mode', async () => {
+  it('returns modes on initialize and allows setting mode and model', async () => {
     const rig = new TestRig();
-    rig.setup('acp approval mode');
+    rig.setup('acp mode and model');
 
     const { sendRequest, cleanup, stderr } = setupAcpTest(rig);
 
@@ -366,8 +366,14 @@ function setupAcpTest(
       const newSession = (await sendRequest('session/new', {
         cwd: rig.testDir!,
         mcpServers: [],
-      })) as { sessionId: string };
+      })) as {
+        sessionId: string;
+        models: {
+          availableModels: Array<{ modelId: string }>;
+        };
+      };
       expect(newSession.sessionId).toBeTruthy();
+      expect(newSession.models.availableModels.length).toBeGreaterThan(0);
 
       // Test 4: Set approval mode to 'yolo'
       const setModeResult = (await sendRequest('session/set_mode', {
@@ -392,6 +398,15 @@ function setupAcpTest(
       })) as { modeId: string };
       expect(setModeResult3).toBeDefined();
       expect(setModeResult3.modeId).toBe('default');
+
+      // Test 7: Set model using first available model
+      const firstModel = newSession.models.availableModels[0];
+      const setModelResult = (await sendRequest('session/set_model', {
+        sessionId: newSession.sessionId,
+        modelId: firstModel.modelId,
+      })) as { modelId: string };
+      expect(setModelResult).toBeDefined();
+      expect(setModelResult.modelId).toBeTruthy();
     } catch (e) {
       if (stderr.length) {
         console.error('Agent stderr:', stderr.join(''));

packages/cli/src/acp-integration/acp.ts

@@ -70,6 +70,13 @@ export class AgentSideConnection implements Client {
           const validatedParams = schema.setModeRequestSchema.parse(params);
           return agent.setMode(validatedParams);
         }
+        case schema.AGENT_METHODS.session_set_model: {
+          if (!agent.setModel) {
+            throw RequestError.methodNotFound();
+          }
+          const validatedParams = schema.setModelRequestSchema.parse(params);
+          return agent.setModel(validatedParams);
+        }
         default:
           throw RequestError.methodNotFound(method);
       }
@@ -408,4 +415,5 @@ export interface Agent {
   prompt(params: schema.PromptRequest): Promise<schema.PromptResponse>;
   cancel(params: schema.CancelNotification): Promise<void>;
   setMode?(params: schema.SetModeRequest): Promise<schema.SetModeResponse>;
+  setModel?(params: schema.SetModelRequest): Promise<schema.SetModelResponse>;
 }

packages/cli/src/acp-integration/acpAgent.ts

@@ -165,30 +165,11 @@ class GeminiAgent {
     this.setupFileSystem(config);
 
     const session = await this.createAndStoreSession(config);
-    const configuredModel = (
-      config.getModel() ||
-      this.config.getModel() ||
-      ''
-    ).trim();
-    const modelId = configuredModel || 'default';
-    const modelName = configuredModel || modelId;
+    const availableModels = this.buildAvailableModels(config);
 
     return {
       sessionId: session.getId(),
-      models: {
-        currentModelId: modelId,
-        availableModels: [
-          {
-            modelId,
-            name: modelName,
-            description: null,
-            _meta: {
-              contextLimit: tokenLimit(modelId),
-            },
-          },
-        ],
-        _meta: null,
-      },
+      models: availableModels,
     };
   }
 
@@ -305,15 +286,29 @@ class GeminiAgent {
   async setMode(params: acp.SetModeRequest): Promise<acp.SetModeResponse> {
     const session = this.sessions.get(params.sessionId);
     if (!session) {
-      throw new Error(`Session not found: ${params.sessionId}`);
+      throw acp.RequestError.invalidParams(
+        `Session not found for id: ${params.sessionId}`,
+      );
     }
     return session.setMode(params);
   }
 
+  async setModel(params: acp.SetModelRequest): Promise<acp.SetModelResponse> {
+    const session = this.sessions.get(params.sessionId);
+    if (!session) {
+      throw acp.RequestError.invalidParams(
+        `Session not found for id: ${params.sessionId}`,
+      );
+    }
+    return session.setModel(params);
+  }
+
   private async ensureAuthenticated(config: Config): Promise<void> {
     const selectedType = this.settings.merged.security?.auth?.selectedType;
     if (!selectedType) {
-      throw acp.RequestError.authRequired('No Selected Type');
+      throw acp.RequestError.authRequired(
+        'Use Qwen Code CLI to authenticate first.',
+      );
     }
 
     try {
@@ -382,4 +377,43 @@ class GeminiAgent {
 
     return session;
   }
+
+  private buildAvailableModels(
+    config: Config,
+  ): acp.NewSessionResponse['models'] {
+    const currentModelId = (
+      config.getModel() ||
+      this.config.getModel() ||
+      ''
+    ).trim();
+    const availableModels = config.getAvailableModels();
+
+    const mappedAvailableModels = availableModels.map((model) => ({
+      modelId: model.id,
+      name: model.label,
+      description: model.description ?? null,
+      _meta: {
+        contextLimit: tokenLimit(model.id),
+      },
+    }));
+
+    if (
+      currentModelId &&
+      !mappedAvailableModels.some((model) => model.modelId === currentModelId)
+    ) {
+      mappedAvailableModels.unshift({
+        modelId: currentModelId,
+        name: currentModelId,
+        description: null,
+        _meta: {
+          contextLimit: tokenLimit(currentModelId),
+        },
+      });
+    }
+
+    return {
+      currentModelId,
+      availableModels: mappedAvailableModels,
+    };
+  }
 }

packages/cli/src/acp-integration/schema.ts

@@ -15,6 +15,7 @@ export const AGENT_METHODS = {
   session_prompt: 'session/prompt',
   session_list: 'session/list',
   session_set_mode: 'session/set_mode',
+  session_set_model: 'session/set_model',
 };
 
 export const CLIENT_METHODS = {
@@ -266,6 +267,18 @@ export const modelInfoSchema = z.object({
   name: z.string(),
 });
 
+export const setModelRequestSchema = z.object({
+  sessionId: z.string(),
+  modelId: z.string(),
+});
+
+export const setModelResponseSchema = z.object({
+  modelId: z.string(),
+});
+
+export type SetModelRequest = z.infer<typeof setModelRequestSchema>;
+export type SetModelResponse = z.infer<typeof setModelResponseSchema>;
+
 export const sessionModelStateSchema = z.object({
   _meta: acpMetaSchema,
   availableModels: z.array(modelInfoSchema),
@@ -592,6 +605,7 @@ export const agentResponseSchema = z.union([
   promptResponseSchema,
   listSessionsResponseSchema,
   setModeResponseSchema,
+  setModelResponseSchema,
 ]);
 
 export const requestPermissionRequestSchema = z.object({
@@ -624,6 +638,7 @@ export const agentRequestSchema = z.union([
   promptRequestSchema,
   listSessionsRequestSchema,
   setModeRequestSchema,
+  setModelRequestSchema,
 ]);
 
 export const agentNotificationSchema = sessionNotificationSchema;

packages/cli/src/acp-integration/session/Session.test.ts

@@ -0,0 +1,174 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { Session } from './Session.js';
+import type { Config, GeminiChat } from '@qwen-code/qwen-code-core';
+import { ApprovalMode } from '@qwen-code/qwen-code-core';
+import type * as acp from '../acp.js';
+import type { LoadedSettings } from '../../config/settings.js';
+import * as nonInteractiveCliCommands from '../../nonInteractiveCliCommands.js';
+
+vi.mock('../../nonInteractiveCliCommands.js', () => ({
+  getAvailableCommands: vi.fn(),
+  handleSlashCommand: vi.fn(),
+}));
+
+describe('Session', () => {
+  let mockChat: GeminiChat;
+  let mockConfig: Config;
+  let mockClient: acp.Client;
+  let mockSettings: LoadedSettings;
+  let session: Session;
+  let currentModel: string;
+  let setModelSpy: ReturnType<typeof vi.fn>;
+  let getAvailableCommandsSpy: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    currentModel = 'qwen3-code-plus';
+    setModelSpy = vi.fn().mockImplementation(async (modelId: string) => {
+      currentModel = modelId;
+    });
+
+    mockChat = {
+      sendMessageStream: vi.fn(),
+      addHistory: vi.fn(),
+    } as unknown as GeminiChat;
+
+    mockConfig = {
+      setApprovalMode: vi.fn(),
+      setModel: setModelSpy,
+      getModel: vi.fn().mockImplementation(() => currentModel),
+    } as unknown as Config;
+
+    mockClient = {
+      sessionUpdate: vi.fn().mockResolvedValue(undefined),
+      requestPermission: vi.fn().mockResolvedValue({
+        outcome: { outcome: 'selected', optionId: 'proceed_once' },
+      }),
+      sendCustomNotification: vi.fn().mockResolvedValue(undefined),
+    } as unknown as acp.Client;
+
+    mockSettings = {
+      merged: {},
+    } as LoadedSettings;
+
+    getAvailableCommandsSpy = vi.mocked(nonInteractiveCliCommands)
+      .getAvailableCommands as unknown as ReturnType<typeof vi.fn>;
+    getAvailableCommandsSpy.mockResolvedValue([]);
+
+    session = new Session(
+      'test-session-id',
+      mockChat,
+      mockConfig,
+      mockClient,
+      mockSettings,
+    );
+  });
+
+  describe('setMode', () => {
+    it.each([
+      ['plan', ApprovalMode.PLAN],
+      ['default', ApprovalMode.DEFAULT],
+      ['auto-edit', ApprovalMode.AUTO_EDIT],
+      ['yolo', ApprovalMode.YOLO],
+    ] as const)('maps %s mode', async (modeId, expected) => {
+      const result = await session.setMode({
+        sessionId: 'test-session-id',
+        modeId,
+      });
+
+      expect(mockConfig.setApprovalMode).toHaveBeenCalledWith(expected);
+      expect(result).toEqual({ modeId });
+    });
+  });
+
+  describe('setModel', () => {
+    it('sets model via config and returns current model', async () => {
+      const result = await session.setModel({
+        sessionId: 'test-session-id',
+        modelId: '  qwen3-coder-plus  ',
+      });
+
+      expect(mockConfig.setModel).toHaveBeenCalledWith('qwen3-coder-plus', {
+        reason: 'user_request_acp',
+        context: 'session/set_model',
+      });
+      expect(mockConfig.getModel).toHaveBeenCalled();
+      expect(result).toEqual({ modelId: 'qwen3-coder-plus' });
+    });
+
+    it('rejects empty/whitespace model IDs', async () => {
+      await expect(
+        session.setModel({
+          sessionId: 'test-session-id',
+          modelId: '   ',
+        }),
+      ).rejects.toThrow('Invalid params');
+
+      expect(mockConfig.setModel).not.toHaveBeenCalled();
+    });
+
+    it('propagates errors from config.setModel', async () => {
+      const configError = new Error('Invalid model');
+      setModelSpy.mockRejectedValueOnce(configError);
+
+      await expect(
+        session.setModel({
+          sessionId: 'test-session-id',
+          modelId: 'invalid-model',
+        }),
+      ).rejects.toThrow('Invalid model');
+    });
+  });
+
+  describe('sendAvailableCommandsUpdate', () => {
+    it('sends available_commands_update from getAvailableCommands()', async () => {
+      getAvailableCommandsSpy.mockResolvedValueOnce([
+        {
+          name: 'init',
+          description: 'Initialize project context',
+        },
+      ]);
+
+      await session.sendAvailableCommandsUpdate();
+
+      expect(getAvailableCommandsSpy).toHaveBeenCalledWith(
+        mockConfig,
+        expect.any(AbortSignal),
+      );
+      expect(mockClient.sessionUpdate).toHaveBeenCalledWith({
+        sessionId: 'test-session-id',
+        update: {
+          sessionUpdate: 'available_commands_update',
+          availableCommands: [
+            {
+              name: 'init',
+              description: 'Initialize project context',
+              input: null,
+            },
+          ],
+        },
+      });
+    });
+
+    it('swallows errors and does not throw', async () => {
+      const consoleErrorSpy = vi
+        .spyOn(console, 'error')
+        .mockImplementation(() => undefined);
+      getAvailableCommandsSpy.mockRejectedValueOnce(
+        new Error('Command discovery failed'),
+      );
+
+      await expect(
+        session.sendAvailableCommandsUpdate(),
+      ).resolves.toBeUndefined();
+      expect(mockClient.sessionUpdate).not.toHaveBeenCalled();
+      expect(consoleErrorSpy).toHaveBeenCalled();
+      consoleErrorSpy.mockRestore();
+    });
+  });
+});

packages/cli/src/acp-integration/session/Session.ts

@@ -52,6 +52,8 @@ import type {
   AvailableCommandsUpdate,
   SetModeRequest,
   SetModeResponse,
+  SetModelRequest,
+  SetModelResponse,
   ApprovalModeValue,
   CurrentModeUpdate,
 } from '../schema.js';
@@ -348,6 +350,31 @@ export class Session implements SessionContext {
     return { modeId: params.modeId };
   }
 
+  /**
+   * Sets the model for the current session.
+   * Validates the model ID and switches the model via Config.
+   */
+  async setModel(params: SetModelRequest): Promise<SetModelResponse> {
+    const modelId = params.modelId.trim();
+
+    if (!modelId) {
+      throw acp.RequestError.invalidParams('modelId cannot be empty');
+    }
+
+    // Attempt to set the model using config
+    await this.config.setModel(modelId, {
+      reason: 'user_request_acp',
+      context: 'session/set_model',
+    });
+
+    // Get updated model info
+    const currentModel = this.config.getModel();
+
+    return {
+      modelId: currentModel,
+    };
+  }
+
   /**
    * Sends a current_mode_update notification to the client.
    * Called after the agent switches modes (e.g., from exit_plan_mode tool).

packages/cli/src/config/config.ts

@@ -334,7 +334,7 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
         .option('experimental-skills', {
           type: 'boolean',
           description: 'Enable experimental Skills feature',
-          default: false,
+          default: settings.tools?.experimental?.skills ?? false,
         })
         .option('channel', {
           type: 'string',

packages/cli/src/config/settingsSchema.ts

@@ -981,6 +981,27 @@ const SETTINGS_SCHEMA = {
         description: 'The number of lines to keep when truncating tool output.',
         showInDialog: true,
       },
+      experimental: {
+        type: 'object',
+        label: 'Experimental',
+        category: 'Tools',
+        requiresRestart: true,
+        default: {},
+        description: 'Experimental tool features.',
+        showInDialog: false,
+        properties: {
+          skills: {
+            type: 'boolean',
+            label: 'Skills',
+            category: 'Tools',
+            requiresRestart: true,
+            default: false,
+            description:
+              'Enable experimental Agent Skills feature. When enabled, Qwen Code can use Skills from .qwen/skills/ and ~/.qwen/skills/.',
+            showInDialog: true,
+          },
+        },
+      },
     },
   },
 

packages/cli/src/i18n/locales/zh.js

@@ -873,11 +873,11 @@ export default {
   'Session Stats': '会话统计',
   'Model Usage': '模型使用情况',
   Reqs: '请求数',
-  'Input Tokens': '输入令牌',
-  'Output Tokens': '输出令牌',
+  'Input Tokens': '输入 token 数',
+  'Output Tokens': '输出 token 数',
   'Savings Highlight:': '节省亮点：',
   'of input tokens were served from the cache, reducing costs.':
-    '的输入令牌来自缓存，降低了成本',
+    '从缓存载入 token ，降低了成本',
   'Tip: For a full token breakdown, run `/stats model`.':
     '提示：要查看完整的令牌明细，请运行 `/stats model`',
   'Model Stats For Nerds': '模型统计（技术细节）',

packages/cli/src/utils/commentJson.test.ts

@@ -8,7 +8,10 @@ import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 import * as os from 'node:os';
-import { updateSettingsFilePreservingFormat } from './commentJson.js';
+import {
+  updateSettingsFilePreservingFormat,
+  applyUpdates,
+} from './commentJson.js';
 
 describe('commentJson', () => {
   let tempDir: string;
@@ -180,3 +183,18 @@ describe('commentJson', () => {
     });
   });
 });
+
+describe('applyUpdates', () => {
+  it('should apply updates correctly', () => {
+    const original = { a: 1, b: { c: 2 } };
+    const updates = { b: { c: 3 } };
+    const result = applyUpdates(original, updates);
+    expect(result).toEqual({ a: 1, b: { c: 3 } });
+  });
+  it('should apply updates correctly when empty', () => {
+    const original = { a: 1, b: { c: 2 } };
+    const updates = { b: {} };
+    const result = applyUpdates(original, updates);
+    expect(result).toEqual({ a: 1, b: {} });
+  });
+});

packages/cli/src/utils/commentJson.ts

@@ -38,7 +38,7 @@ export function updateSettingsFilePreservingFormat(
   fs.writeFileSync(filePath, updatedContent, 'utf-8');
 }
 
-function applyUpdates(
+export function applyUpdates(
   current: Record<string, unknown>,
   updates: Record<string, unknown>,
 ): Record<string, unknown> {
@@ -50,6 +50,7 @@ function applyUpdates(
       typeof value === 'object' &&
       value !== null &&
       !Array.isArray(value) &&
+      Object.keys(value).length > 0 &&
       typeof result[key] === 'object' &&
       result[key] !== null &&
       !Array.isArray(result[key])

packages/core/src/core/anthropicContentGenerator/anthropicContentGenerator.ts

@@ -28,7 +28,6 @@ type RawMessageStreamEvent = Anthropic.RawMessageStreamEvent;
 import { getDefaultTokenizer } from '../../utils/request-tokenizer/index.js';
 import { safeJsonParse } from '../../utils/safeJsonParse.js';
 import { AnthropicContentConverter } from './converter.js';
-import { buildRuntimeFetchOptions } from '../../utils/runtimeFetchOptions.js';
 
 type StreamingBlockState = {
   type: string;
@@ -55,9 +54,6 @@ export class AnthropicContentGenerator implements ContentGenerator {
   ) {
     const defaultHeaders = this.buildHeaders();
     const baseURL = contentGeneratorConfig.baseUrl;
-    // Configure runtime options to ensure user-configured timeout works as expected
-    // bodyTimeout is always disabled (0) to let Anthropic SDK timeout control the request
-    const runtimeOptions = buildRuntimeFetchOptions('anthropic');
 
     this.client = new Anthropic({
       apiKey: contentGeneratorConfig.apiKey,
@@ -65,7 +61,6 @@ export class AnthropicContentGenerator implements ContentGenerator {
       timeout: contentGeneratorConfig.timeout,
       maxRetries: contentGeneratorConfig.maxRetries,
       defaultHeaders,
-      ...runtimeOptions,
     });
 
     this.converter = new AnthropicContentConverter(

packages/core/src/core/openaiContentGenerator/provider/dashscope.ts

@@ -16,7 +16,6 @@ import type {
   ChatCompletionContentPartWithCache,
   ChatCompletionToolWithCache,
 } from './types.js';
-import { buildRuntimeFetchOptions } from '../../../utils/runtimeFetchOptions.js';
 
 export class DashScopeOpenAICompatibleProvider
   implements OpenAICompatibleProvider
@@ -69,16 +68,12 @@ export class DashScopeOpenAICompatibleProvider
       maxRetries = DEFAULT_MAX_RETRIES,
     } = this.contentGeneratorConfig;
     const defaultHeaders = this.buildHeaders();
-    // Configure fetch options to ensure user-configured timeout works as expected
-    // bodyTimeout is always disabled (0) to let OpenAI SDK timeout control the request
-    const fetchOptions = buildRuntimeFetchOptions('openai');
     return new OpenAI({
       apiKey,
       baseURL: baseUrl,
       timeout,
       maxRetries,
       defaultHeaders,
-      ...(fetchOptions ? { fetchOptions } : {}),
     });
   }
 

packages/core/src/core/openaiContentGenerator/provider/default.ts

@@ -4,7 +4,6 @@ import type { Config } from '../../../config/config.js';
 import type { ContentGeneratorConfig } from '../../contentGenerator.js';
 import { DEFAULT_TIMEOUT, DEFAULT_MAX_RETRIES } from '../constants.js';
 import type { OpenAICompatibleProvider } from './types.js';
-import { buildRuntimeFetchOptions } from '../../../utils/runtimeFetchOptions.js';
 
 /**
  * Default provider for standard OpenAI-compatible APIs
@@ -44,16 +43,12 @@ export class DefaultOpenAICompatibleProvider
       maxRetries = DEFAULT_MAX_RETRIES,
     } = this.contentGeneratorConfig;
     const defaultHeaders = this.buildHeaders();
-    // Configure fetch options to ensure user-configured timeout works as expected
-    // bodyTimeout is always disabled (0) to let OpenAI SDK timeout control the request
-    const fetchOptions = buildRuntimeFetchOptions('openai');
     return new OpenAI({
       apiKey,
       baseURL: baseUrl,
       timeout,
       maxRetries,
       defaultHeaders,
-      ...(fetchOptions ? { fetchOptions } : {}),
     });
   }
 

packages/core/src/utils/runtimeFetchOptions.ts

@@ -1,167 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { EnvHttpProxyAgent } from 'undici';
-
-/**
- * JavaScript runtime type
- */
-export type Runtime = 'node' | 'bun' | 'unknown';
-
-/**
- * Detect the current JavaScript runtime
- */
-export function detectRuntime(): Runtime {
-  if (typeof process !== 'undefined' && process.versions?.['bun']) {
-    return 'bun';
-  }
-  if (typeof process !== 'undefined' && process.versions?.node) {
-    return 'node';
-  }
-  return 'unknown';
-}
-
-/**
- * Runtime fetch options for OpenAI SDK
- */
-export type OpenAIRuntimeFetchOptions =
-  | {
-      dispatcher?: EnvHttpProxyAgent;
-      timeout?: false;
-    }
-  | undefined;
-
-/**
- * Runtime fetch options for Anthropic SDK
- */
-export type AnthropicRuntimeFetchOptions = {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  httpAgent?: any;
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  fetch?: any;
-};
-
-/**
- * SDK type identifier
- */
-export type SDKType = 'openai' | 'anthropic';
-
-/**
- * Build runtime-specific fetch options for OpenAI SDK
- */
-export function buildRuntimeFetchOptions(
-  sdkType: 'openai',
-): OpenAIRuntimeFetchOptions;
-/**
- * Build runtime-specific fetch options for Anthropic SDK
- */
-export function buildRuntimeFetchOptions(
-  sdkType: 'anthropic',
-): AnthropicRuntimeFetchOptions;
-/**
- * Build runtime-specific fetch options based on the detected runtime and SDK type
- * This function applies runtime-specific configurations to handle timeout differences
- * across Node.js and Bun, ensuring user-configured timeout works as expected.
- *
- * @param sdkType - The SDK type ('openai' or 'anthropic') to determine return type
- * @returns Runtime-specific options compatible with the specified SDK
- */
-export function buildRuntimeFetchOptions(
-  sdkType: SDKType,
-): OpenAIRuntimeFetchOptions | AnthropicRuntimeFetchOptions {
-  const runtime = detectRuntime();
-
-  // Always disable bodyTimeout (set to 0) to let SDK's timeout parameter
-  // control the total request time. bodyTimeout only monitors intervals between
-  // data chunks, not the total request time, so we disable it to ensure user-configured
-  // timeout works as expected for both streaming and non-streaming requests.
-
-  switch (runtime) {
-    case 'bun': {
-      if (sdkType === 'openai') {
-        // Bun: Disable built-in 300s timeout to let OpenAI SDK timeout control
-        // This ensures user-configured timeout works as expected without interference
-        return {
-          timeout: false,
-        };
-      } else {
-        // Bun: Use custom fetch to disable built-in 300s timeout
-        // This allows Anthropic SDK timeout to control the request
-        // Note: Bun's fetch automatically uses proxy settings from environment variables
-        // (HTTP_PROXY, HTTPS_PROXY, NO_PROXY), so proxy behavior is preserved
-        const bunFetch: typeof fetch = async (
-          input: RequestInfo | URL,
-          init?: RequestInit,
-        ) => {
-          const bunFetchOptions: RequestInit = {
-            ...init,
-            // @ts-expect-error - Bun-specific timeout option
-            timeout: false,
-          };
-          return fetch(input, bunFetchOptions);
-        };
-        return {
-          fetch: bunFetch,
-        };
-      }
-    }
-
-    case 'node': {
-      // Node.js: Use EnvHttpProxyAgent to configure proxy and disable bodyTimeout
-      // EnvHttpProxyAgent automatically reads proxy settings from environment variables
-      // (HTTP_PROXY, HTTPS_PROXY, NO_PROXY, etc.) to preserve proxy functionality
-      // bodyTimeout is always 0 (disabled) to let SDK timeout control the request
-      try {
-        const agent = new EnvHttpProxyAgent({
-          bodyTimeout: 0, // Disable to let SDK timeout control total request time
-        });
-
-        if (sdkType === 'openai') {
-          return {
-            dispatcher: agent,
-          };
-        } else {
-          return {
-            httpAgent: agent,
-          };
-        }
-      } catch {
-        // If undici is not available, return appropriate default
-        if (sdkType === 'openai') {
-          return undefined;
-        } else {
-          return {};
-        }
-      }
-    }
-
-    default: {
-      // Unknown runtime: Try to use EnvHttpProxyAgent if available
-      // EnvHttpProxyAgent automatically reads proxy settings from environment variables
-      try {
-        const agent = new EnvHttpProxyAgent({
-          bodyTimeout: 0, // Disable to let SDK timeout control total request time
-        });
-
-        if (sdkType === 'openai') {
-          return {
-            dispatcher: agent,
-          };
-        } else {
-          return {
-            httpAgent: agent,
-          };
-        }
-      } catch {
-        if (sdkType === 'openai') {
-          return undefined;
-        } else {
-          return {};
-        }
-      }
-    }
-  }
-}