fix(vscode-ide-companion): window qwen code run command

- Remove isNodeAvailable function and related child_process import
- Update command execution logic to properly handle ELECTRON_RUN_AS_NODE
- Add proper quoting mechanisms for different platforms (PowerShell vs POSIX)
- Bump version from 0.6.1 to 0.6.2

docs/users/configuration/settings.md

@@ -136,95 +136,6 @@ Settings are organized into categories. All settings should be placed within the
 - `"./custom-logs"` - Logs to `./custom-logs` relative to current directory
 - `"/tmp/openai-logs"` - Logs to absolute path `/tmp/openai-logs`
 
-#### modelProviders
-
-Use `modelProviders` to declare curated model lists per auth type that the `/model` picker can switch between. Keys must be valid auth types (`openai`, `anthropic`, `gemini`, `vertex-ai`, etc.). Each entry requires an `id` and **must include `envKey`**, with optional `name`, `description`, `baseUrl`, and `generationConfig`. Credentials are never persisted in settings; the runtime reads them from `process.env[envKey]`. Qwen OAuth models remain hard-coded and cannot be overridden.
-
-##### Example
-
-```json
-{
-  "modelProviders": {
-    "openai": [
-      {
-        "id": "gpt-4o",
-        "name": "GPT-4o",
-        "envKey": "OPENAI_API_KEY",
-        "baseUrl": "https://api.openai.com/v1",
-        "generationConfig": {
-          "timeout": 60000,
-          "maxRetries": 3,
-          "samplingParams": { "temperature": 0.2 }
-        }
-      }
-    ],
-    "anthropic": [
-      {
-        "id": "claude-3-5-sonnet",
-        "envKey": "ANTHROPIC_API_KEY",
-        "baseUrl": "https://api.anthropic.com/v1"
-      }
-    ],
-    "gemini": [
-      {
-        "id": "gemini-2.0-flash",
-        "name": "Gemini 2.0 Flash",
-        "envKey": "GEMINI_API_KEY",
-        "baseUrl": "https://generativelanguage.googleapis.com"
-      }
-    ],
-    "vertex-ai": [
-      {
-        "id": "gemini-1.5-pro-vertex",
-        "envKey": "GOOGLE_API_KEY",
-        "baseUrl": "https://generativelanguage.googleapis.com"
-      }
-    ]
-  }
-}
-```
-
-> [!note]
-> Only the `/model` command exposes non-default auth types. Anthropic, Gemini, Vertex AI, etc., must be defined via `modelProviders`. The `/auth` command intentionally lists only the built-in Qwen OAuth and OpenAI flows.
-
-##### Resolution layers and atomicity
-
-The effective auth/model/credential values are chosen per field using the following precedence (first present wins). You can combine `--auth-type` with `--model` to point directly at a provider entry; these CLI flags run before other layers.
-
-| Layer (highest → lowest)   | authType                            | model                                           | apiKey                                              | baseUrl                                              | apiKeyEnvKey           | proxy                             |
-| -------------------------- | ----------------------------------- | ----------------------------------------------- | --------------------------------------------------- | ---------------------------------------------------- | ---------------------- | --------------------------------- |
-| Programmatic overrides     | `/auth `                            | `/auth` input                                   | `/auth` input                                       | `/auth` input                                        | —                      | —                                 |
-| Model provider selection   | —                                   | `modelProvider.id`                              | `env[modelProvider.envKey]`                         | `modelProvider.baseUrl`                              | `modelProvider.envKey` | —                                 |
-| CLI arguments              | `--auth-type`                       | `--model`                                       | `--openaiApiKey` (or provider-specific equivalents) | `--openaiBaseUrl` (or provider-specific equivalents) | —                      | —                                 |
-| Environment variables      | —                                   | Provider-specific mapping (e.g. `OPENAI_MODEL`) | Provider-specific mapping (e.g. `OPENAI_API_KEY`)   | Provider-specific mapping (e.g. `OPENAI_BASE_URL`)   | —                      | —                                 |
-| Settings (`settings.json`) | `security.auth.selectedType`        | `model.name`                                    | `security.auth.apiKey`                              | `security.auth.baseUrl`                              | —                      | —                                 |
-| Default / computed         | Falls back to `AuthType.QWEN_OAUTH` | Built-in default (OpenAI ⇒ `qwen3-coder-plus`)  | —                                                   | —                                                    | —                      | `Config.getProxy()` if configured |
-
-\*When present, CLI auth flags override settings. Otherwise, `security.auth.selectedType` or the implicit default determine the auth type. Qwen OAuth and OpenAI are the only auth types surfaced without extra configuration.
-
-Model-provider sourced values are applied atomically: once a provider model is active, every field it defines is protected from lower layers until you manually clear credentials via `/auth`. The final `generationConfig` is the projection across all layers—lower layers only fill gaps left by higher ones, and the provider layer remains impenetrable.
-
-The merge strategy for `modelProviders` is REPLACE: the entire `modelProviders` from project settings will override the corresponding section in user settings, rather than merging the two.
-
-##### Generation config layering
-
-Per-field precedence for `generationConfig`:
-
-1. Programmatic overrides (e.g. runtime `/model`, `/auth` changes)
-2. `modelProviders[authType][].generationConfig`
-3. `settings.model.generationConfig`
-4. Content-generator defaults (`getDefaultGenerationConfig` for OpenAI, `getParameterValue` for Gemini, etc.)
-
-`samplingParams` is treated atomically; provider values replace the entire object. Defaults from the content generator apply last so each provider retains its tuned baseline.
-
-##### Selection persistence and recommendations
-
-> [!important]
-> Define `modelProviders` in the user-scope `~/.qwen/settings.json` whenever possible and avoid persisting credential overrides in any scope. Keeping the provider catalog in user settings prevents merge/override conflicts between project and user scopes and ensures `/auth` and `/model` updates always write back to a consistent scope.
-
-- `/model` and `/auth` persist `model.name` (where applicable) and `security.auth.selectedType` to the closest writable scope that already defines `modelProviders`; otherwise they fall back to the user scope. This keeps workspace/user files in sync with the active provider catalog.
-- Without `modelProviders`, the resolver mixes CLI/env/settings layers, which is fine for single-provider setups but cumbersome when frequently switching. Define provider catalogs whenever multi-model workflows are common so that switches stay atomic, source-attributed, and debuggable.
-
 #### context
 
 | Setting                                           | Type                       | Description                                                                                                                                                                                                                                                                                                                                                           | Default     |

docs/users/overview.md

@@ -1,6 +1,5 @@
 # Qwen Code overview
-
-[![@qwen-code/qwen-code downloads](https://img.shields.io/npm/dw/@qwen-code/qwen-code.svg)](https://npm-compare.com/@qwen-code/qwen-code)
+[![@qwen-code/qwen-code downloads](https://img.shields.io/npm/dw/@qwen-code/qwen-code.svg)](https://npm-compare.com/@qwen-code/qwen-code) 
 [![@qwen-code/qwen-code version](https://img.shields.io/npm/v/@qwen-code/qwen-code.svg)](https://www.npmjs.com/package/@qwen-code/qwen-code)
 
 > Learn about Qwen Code, Qwen's agentic coding tool that lives in your terminal and helps you turn ideas into code faster than ever before.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.7.0",
+  "version": "0.6.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@qwen-code/qwen-code",
-      "version": "0.7.0",
+      "version": "0.6.1",
       "workspaces": [
         "packages/*"
       ],
@@ -17316,7 +17316,7 @@
     },
     "packages/cli": {
       "name": "@qwen-code/qwen-code",
-      "version": "0.7.0",
+      "version": "0.6.1",
       "dependencies": {
         "@google/genai": "1.30.0",
         "@iarna/toml": "^2.2.5",
@@ -17953,7 +17953,7 @@
     },
     "packages/core": {
       "name": "@qwen-code/qwen-code-core",
-      "version": "0.7.0",
+      "version": "0.6.1",
       "hasInstallScript": true,
       "dependencies": {
         "@anthropic-ai/sdk": "^0.36.1",
@@ -21413,7 +21413,7 @@
     },
     "packages/test-utils": {
       "name": "@qwen-code/qwen-code-test-utils",
-      "version": "0.7.0",
+      "version": "0.6.1",
       "dev": true,
       "license": "Apache-2.0",
       "devDependencies": {
@@ -21425,7 +21425,7 @@
     },
     "packages/vscode-ide-companion": {
       "name": "qwen-code-vscode-ide-companion",
-      "version": "0.7.0",
+      "version": "0.6.1",
       "license": "LICENSE",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.25.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.7.0",
+  "version": "0.6.1",
   "engines": {
     "node": ">=20.0.0"
   },
@@ -13,7 +13,7 @@
     "url": "git+https://github.com/QwenLM/qwen-code.git"
   },
   "config": {
-    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.7.0"
+    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.6.1"
   },
   "scripts": {
     "start": "cross-env node scripts/start.js",

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.7.0",
+  "version": "0.6.1",
   "description": "Qwen Code",
   "repository": {
     "type": "git",
@@ -33,7 +33,7 @@
     "dist"
   ],
   "config": {
-    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.7.0"
+    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.6.1"
   },
   "dependencies": {
     "@google/genai": "1.30.0",

packages/cli/src/config/auth.test.ts

@@ -1,112 +1,41 @@
 /**
  * @license
- * Copyright 2025 Qwen Team
+ * Copyright 2025 Google LLC
  * SPDX-License-Identifier: Apache-2.0
  */
 
 import { AuthType } from '@qwen-code/qwen-code-core';
 import { vi } from 'vitest';
 import { validateAuthMethod } from './auth.js';
-import * as settings from './settings.js';
 
 vi.mock('./settings.js', () => ({
   loadEnvironment: vi.fn(),
   loadSettings: vi.fn().mockReturnValue({
-    merged: {},
+    merged: vi.fn().mockReturnValue({}),
   }),
 }));
 
 describe('validateAuthMethod', () => {
   beforeEach(() => {
     vi.resetModules();
-    // Reset mock to default
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {},
-    } as ReturnType<typeof settings.loadSettings>);
   });
 
   afterEach(() => {
     vi.unstubAllEnvs();
-    delete process.env['OPENAI_API_KEY'];
-    delete process.env['CUSTOM_API_KEY'];
-    delete process.env['GEMINI_API_KEY'];
-    delete process.env['GEMINI_API_KEY_ALTERED'];
-    delete process.env['ANTHROPIC_API_KEY'];
-    delete process.env['ANTHROPIC_BASE_URL'];
-    delete process.env['GOOGLE_API_KEY'];
   });
 
-  it('should return null for USE_OPENAI with default env key', () => {
+  it('should return null for USE_OPENAI', () => {
     process.env['OPENAI_API_KEY'] = 'fake-key';
     expect(validateAuthMethod(AuthType.USE_OPENAI)).toBeNull();
   });
 
-  it('should return an error message for USE_OPENAI if no API key is available', () => {
+  it('should return an error message for USE_OPENAI if OPENAI_API_KEY is not set', () => {
+    delete process.env['OPENAI_API_KEY'];
     expect(validateAuthMethod(AuthType.USE_OPENAI)).toBe(
-      "Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the 'OPENAI_API_KEY' environment variable.",
+      'OPENAI_API_KEY environment variable not found. You can enter it interactively or add it to your .env file.',
     );
   });
 
-  it('should return null for USE_OPENAI with custom envKey from modelProviders', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'custom-model' },
-        modelProviders: {
-          openai: [{ id: 'custom-model', envKey: 'CUSTOM_API_KEY' }],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-    process.env['CUSTOM_API_KEY'] = 'custom-key';
-
-    expect(validateAuthMethod(AuthType.USE_OPENAI)).toBeNull();
-  });
-
-  it('should return error with custom envKey hint when modelProviders envKey is set but env var is missing', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'custom-model' },
-        modelProviders: {
-          openai: [{ id: 'custom-model', envKey: 'CUSTOM_API_KEY' }],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-
-    const result = validateAuthMethod(AuthType.USE_OPENAI);
-    expect(result).toContain('CUSTOM_API_KEY');
-  });
-
-  it('should return null for USE_GEMINI with custom envKey', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'gemini-1.5-flash' },
-        modelProviders: {
-          gemini: [
-            { id: 'gemini-1.5-flash', envKey: 'GEMINI_API_KEY_ALTERED' },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-    process.env['GEMINI_API_KEY_ALTERED'] = 'altered-key';
-
-    expect(validateAuthMethod(AuthType.USE_GEMINI)).toBeNull();
-  });
-
-  it('should return error with custom envKey for USE_GEMINI when env var is missing', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'gemini-1.5-flash' },
-        modelProviders: {
-          gemini: [
-            { id: 'gemini-1.5-flash', envKey: 'GEMINI_API_KEY_ALTERED' },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-
-    const result = validateAuthMethod(AuthType.USE_GEMINI);
-    expect(result).toContain('GEMINI_API_KEY_ALTERED');
-  });
-
   it('should return null for QWEN_OAUTH', () => {
     expect(validateAuthMethod(AuthType.QWEN_OAUTH)).toBeNull();
   });
@@ -116,115 +45,4 @@ describe('validateAuthMethod', () => {
       'Invalid auth method selected.',
     );
   });
-
-  it('should return null for USE_ANTHROPIC with custom envKey and baseUrl', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'claude-3' },
-        modelProviders: {
-          anthropic: [
-            {
-              id: 'claude-3',
-              envKey: 'CUSTOM_ANTHROPIC_KEY',
-              baseUrl: 'https://api.anthropic.com',
-            },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-    process.env['CUSTOM_ANTHROPIC_KEY'] = 'custom-anthropic-key';
-
-    expect(validateAuthMethod(AuthType.USE_ANTHROPIC)).toBeNull();
-  });
-
-  it('should return error for USE_ANTHROPIC when baseUrl is missing', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'claude-3' },
-        modelProviders: {
-          anthropic: [{ id: 'claude-3', envKey: 'CUSTOM_ANTHROPIC_KEY' }],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-    process.env['CUSTOM_ANTHROPIC_KEY'] = 'custom-key';
-
-    const result = validateAuthMethod(AuthType.USE_ANTHROPIC);
-    expect(result).toContain('modelProviders[].baseUrl');
-  });
-
-  it('should return null for USE_VERTEX_AI with custom envKey', () => {
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'vertex-model' },
-        modelProviders: {
-          'vertex-ai': [
-            { id: 'vertex-model', envKey: 'GOOGLE_API_KEY_VERTEX' },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-    process.env['GOOGLE_API_KEY_VERTEX'] = 'vertex-key';
-
-    expect(validateAuthMethod(AuthType.USE_VERTEX_AI)).toBeNull();
-  });
-
-  it('should use config.modelsConfig.getModel() when Config is provided', () => {
-    // Settings has a different model
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'settings-model' },
-        modelProviders: {
-          openai: [
-            { id: 'settings-model', envKey: 'SETTINGS_API_KEY' },
-            { id: 'cli-model', envKey: 'CLI_API_KEY' },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-
-    // Mock Config object that returns a different model (e.g., from CLI args)
-    const mockConfig = {
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('cli-model'),
-      },
-    } as unknown as import('@qwen-code/qwen-code-core').Config;
-
-    // Set the env key for the CLI model, not the settings model
-    process.env['CLI_API_KEY'] = 'cli-key';
-
-    // Should use 'cli-model' from config.modelsConfig.getModel(), not 'settings-model'
-    const result = validateAuthMethod(AuthType.USE_OPENAI, mockConfig);
-    expect(result).toBeNull();
-    expect(mockConfig.modelsConfig.getModel).toHaveBeenCalled();
-  });
-
-  it('should fail validation when Config provides different model without matching env key', () => {
-    // Clean up any existing env keys first
-    delete process.env['CLI_API_KEY'];
-    delete process.env['SETTINGS_API_KEY'];
-    delete process.env['OPENAI_API_KEY'];
-
-    vi.mocked(settings.loadSettings).mockReturnValue({
-      merged: {
-        model: { name: 'settings-model' },
-        modelProviders: {
-          openai: [
-            { id: 'settings-model', envKey: 'SETTINGS_API_KEY' },
-            { id: 'cli-model', envKey: 'CLI_API_KEY' },
-          ],
-        },
-      },
-    } as unknown as ReturnType<typeof settings.loadSettings>);
-
-    const mockConfig = {
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('cli-model'),
-      },
-    } as unknown as import('@qwen-code/qwen-code-core').Config;
-
-    // Don't set CLI_API_KEY - validation should fail
-    const result = validateAuthMethod(AuthType.USE_OPENAI, mockConfig);
-    expect(result).not.toBeNull();
-    expect(result).toContain('CLI_API_KEY');
-  });
 });

packages/cli/src/config/auth.ts

@@ -1,169 +1,21 @@
 /**
  * @license
- * Copyright 2025 Qwen Team
+ * Copyright 2025 Google LLC
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import {
-  AuthType,
-  type Config,
-  type ModelProvidersConfig,
-  type ProviderModelConfig,
-} from '@qwen-code/qwen-code-core';
-import { loadEnvironment, loadSettings, type Settings } from './settings.js';
-import { t } from '../i18n/index.js';
+import { AuthType } from '@qwen-code/qwen-code-core';
+import { loadEnvironment, loadSettings } from './settings.js';
 
-/**
- * Default environment variable names for each auth type
- */
-const DEFAULT_ENV_KEYS: Record<string, string> = {
-  [AuthType.USE_OPENAI]: 'OPENAI_API_KEY',
-  [AuthType.USE_ANTHROPIC]: 'ANTHROPIC_API_KEY',
-  [AuthType.USE_GEMINI]: 'GEMINI_API_KEY',
-  [AuthType.USE_VERTEX_AI]: 'GOOGLE_API_KEY',
-};
-
-/**
- * Find model configuration from modelProviders by authType and modelId
- */
-function findModelConfig(
-  modelProviders: ModelProvidersConfig | undefined,
-  authType: string,
-  modelId: string | undefined,
-): ProviderModelConfig | undefined {
-  if (!modelProviders || !modelId) {
-    return undefined;
-  }
-
-  const models = modelProviders[authType];
-  if (!Array.isArray(models)) {
-    return undefined;
-  }
-
-  return models.find((m) => m.id === modelId);
-}
-
-/**
- * Check if API key is available for the given auth type and model configuration.
- * Prioritizes custom envKey from modelProviders over default environment variables.
- */
-function hasApiKeyForAuth(
-  authType: string,
-  settings: Settings,
-  config?: Config,
-): {
-  hasKey: boolean;
-  checkedEnvKey: string | undefined;
-  isExplicitEnvKey: boolean;
-} {
-  const modelProviders = settings.modelProviders as
-    | ModelProvidersConfig
-    | undefined;
-
-  // Use config.modelsConfig.getModel() if available for accurate model ID resolution
-  // that accounts for CLI args, env vars, and settings. Fall back to settings.model.name.
-  const modelId = config?.modelsConfig.getModel() ?? settings.model?.name;
-
-  // Try to find model-specific envKey from modelProviders
-  const modelConfig = findModelConfig(modelProviders, authType, modelId);
-  if (modelConfig?.envKey) {
-    // Explicit envKey configured - only check this env var, no apiKey fallback
-    const hasKey = !!process.env[modelConfig.envKey];
-    return {
-      hasKey,
-      checkedEnvKey: modelConfig.envKey,
-      isExplicitEnvKey: true,
-    };
-  }
-
-  // Using default environment variable - apiKey fallback is allowed
-  const defaultEnvKey = DEFAULT_ENV_KEYS[authType];
-  if (defaultEnvKey) {
-    const hasKey = !!process.env[defaultEnvKey];
-    if (hasKey) {
-      return { hasKey, checkedEnvKey: defaultEnvKey, isExplicitEnvKey: false };
-    }
-  }
-
-  // Also check settings.security.auth.apiKey as fallback (only for default env key)
-  if (settings.security?.auth?.apiKey) {
-    return {
-      hasKey: true,
-      checkedEnvKey: defaultEnvKey || undefined,
-      isExplicitEnvKey: false,
-    };
-  }
-
-  return {
-    hasKey: false,
-    checkedEnvKey: defaultEnvKey,
-    isExplicitEnvKey: false,
-  };
-}
-
-/**
- * Generate API key error message based on auth check result.
- * Returns null if API key is present, otherwise returns the appropriate error message.
- */
-function getApiKeyError(
-  authMethod: string,
-  settings: Settings,
-  config?: Config,
-): string | null {
-  const { hasKey, checkedEnvKey, isExplicitEnvKey } = hasApiKeyForAuth(
-    authMethod,
-    settings,
-    config,
-  );
-  if (hasKey) {
-    return null;
-  }
-
-  const envKeyHint = checkedEnvKey || DEFAULT_ENV_KEYS[authMethod];
-  if (isExplicitEnvKey) {
-    return t(
-      '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.',
-      { envKeyHint },
-    );
-  }
-  return t(
-    '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.',
-    { envKeyHint },
-  );
-}
-
-/**
- * Validate that the required credentials and configuration exist for the given auth method.
- */
-export function validateAuthMethod(
-  authMethod: string,
-  config?: Config,
-): string | null {
+export function validateAuthMethod(authMethod: string): string | null {
   const settings = loadSettings();
   loadEnvironment(settings.merged);
 
   if (authMethod === AuthType.USE_OPENAI) {
-    const { hasKey, checkedEnvKey, isExplicitEnvKey } = hasApiKeyForAuth(
-      authMethod,
-      settings.merged,
-      config,
-    );
-    if (!hasKey) {
-      const envKeyHint = checkedEnvKey
-        ? `'${checkedEnvKey}'`
-        : "'OPENAI_API_KEY'";
-      if (isExplicitEnvKey) {
-        // Explicit envKey configured - only suggest setting the env var
-        return t(
-          'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.',
-          { envKeyHint },
-        );
-      }
-      // Default env key - can use either apiKey or env var
-      return t(
-        'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.',
-        { envKeyHint },
-      );
+    const hasApiKey =
+      process.env['OPENAI_API_KEY'] || settings.merged.security?.auth?.apiKey;
+    if (!hasApiKey) {
+      return 'OPENAI_API_KEY environment variable not found. You can enter it interactively or add it to your .env file.';
     }
     return null;
   }
@@ -175,49 +27,36 @@ export function validateAuthMethod(
   }
 
   if (authMethod === AuthType.USE_ANTHROPIC) {
-    const apiKeyError = getApiKeyError(authMethod, settings.merged, config);
-    if (apiKeyError) {
-      return apiKeyError;
+    const hasApiKey = process.env['ANTHROPIC_API_KEY'];
+    if (!hasApiKey) {
+      return 'ANTHROPIC_API_KEY environment variable not found.';
     }
 
-    // Check baseUrl - can come from modelProviders or environment
-    const modelProviders = settings.merged.modelProviders as
-      | ModelProvidersConfig
-      | undefined;
-    // Use config.modelsConfig.getModel() if available for accurate model ID
-    const modelId =
-      config?.modelsConfig.getModel() ?? settings.merged.model?.name;
-    const modelConfig = findModelConfig(modelProviders, authMethod, modelId);
-
-    if (modelConfig && !modelConfig.baseUrl) {
-      return t(
-        'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.',
-      );
-    }
-    if (!modelConfig && !process.env['ANTHROPIC_BASE_URL']) {
-      return t('ANTHROPIC_BASE_URL environment variable not found.');
+    const hasBaseUrl = process.env['ANTHROPIC_BASE_URL'];
+    if (!hasBaseUrl) {
+      return 'ANTHROPIC_BASE_URL environment variable not found.';
     }
 
     return null;
   }
 
   if (authMethod === AuthType.USE_GEMINI) {
-    const apiKeyError = getApiKeyError(authMethod, settings.merged, config);
-    if (apiKeyError) {
-      return apiKeyError;
+    const hasApiKey = process.env['GEMINI_API_KEY'];
+    if (!hasApiKey) {
+      return 'GEMINI_API_KEY environment variable not found. Please set it in your .env file or environment variables.';
     }
     return null;
   }
 
   if (authMethod === AuthType.USE_VERTEX_AI) {
-    const apiKeyError = getApiKeyError(authMethod, settings.merged, config);
-    if (apiKeyError) {
-      return apiKeyError;
+    const hasApiKey = process.env['GOOGLE_API_KEY'];
+    if (!hasApiKey) {
+      return 'GOOGLE_API_KEY environment variable not found. Please set it in your .env file or environment variables.';
     }
 
     process.env['GOOGLE_GENAI_USE_VERTEXAI'] = 'true';
     return null;
   }
 
-  return t('Invalid auth method selected.');
+  return 'Invalid auth method selected.';
 }

packages/cli/src/config/config.test.ts

@@ -77,8 +77,10 @@ vi.mock('read-package-up', () => ({
   ),
 }));
 
-vi.mock('@qwen-code/qwen-code-core', async (importOriginal) => {
-  const actualServer = await importOriginal<typeof ServerConfig>();
+vi.mock('@qwen-code/qwen-code-core', async () => {
+  const actualServer = await vi.importActual<typeof ServerConfig>(
+    '@qwen-code/qwen-code-core',
+  );
   return {
     ...actualServer,
     IdeClient: {

packages/cli/src/config/config.ts

@@ -31,10 +31,6 @@ import {
 } from '@qwen-code/qwen-code-core';
 import { extensionsCommand } from '../commands/extensions.js';
 import type { Settings } from './settings.js';
-import {
-  resolveCliGenerationConfig,
-  getAuthTypeFromEnv,
-} from '../utils/modelConfigUtils.js';
 import yargs, { type Argv } from 'yargs';
 import { hideBin } from 'yargs/helpers';
 import * as fs from 'node:fs';
@@ -170,7 +166,17 @@ function normalizeOutputFormat(
 }
 
 export async function parseArguments(settings: Settings): Promise<CliArgs> {
-  const rawArgv = hideBin(process.argv);
+  let rawArgv = hideBin(process.argv);
+
+  // hack: if the first argument is the CLI entry point, remove it
+  if (
+    rawArgv.length > 0 &&
+    (rawArgv[0].endsWith('/dist/qwen-cli/cli.js') ||
+      rawArgv[0].endsWith('/dist/cli.js'))
+  ) {
+    rawArgv = rawArgv.slice(1);
+  }
+
   const yargsInstance = yargs(rawArgv)
     .locale('en')
     .scriptName('qwen')
@@ -928,25 +934,28 @@ export async function loadCliConfig(
 
   const selectedAuthType =
     (argv.authType as AuthType | undefined) ||
-    settings.security?.auth?.selectedType ||
-    /* getAuthTypeFromEnv means no authType was explicitly provided, we infer the authType from env vars */
-    getAuthTypeFromEnv();
+    settings.security?.auth?.selectedType;
 
-  // Unified resolution of generation config with source attribution
-  const resolvedCliConfig = resolveCliGenerationConfig({
-    argv: {
-      model: argv.model,
-      openaiApiKey: argv.openaiApiKey,
-      openaiBaseUrl: argv.openaiBaseUrl,
-      openaiLogging: argv.openaiLogging,
-      openaiLoggingDir: argv.openaiLoggingDir,
-    },
-    settings,
-    selectedAuthType,
-    env: process.env as Record<string, string | undefined>,
-  });
-
-  const { model: resolvedModel } = resolvedCliConfig;
+  const apiKey =
+    (selectedAuthType === AuthType.USE_OPENAI
+      ? argv.openaiApiKey ||
+        process.env['OPENAI_API_KEY'] ||
+        settings.security?.auth?.apiKey
+      : '') || '';
+  const baseUrl =
+    (selectedAuthType === AuthType.USE_OPENAI
+      ? argv.openaiBaseUrl ||
+        process.env['OPENAI_BASE_URL'] ||
+        settings.security?.auth?.baseUrl
+      : '') || '';
+  const resolvedModel =
+    argv.model ||
+    (selectedAuthType === AuthType.USE_OPENAI
+      ? process.env['OPENAI_MODEL'] ||
+        process.env['QWEN_MODEL'] ||
+        settings.model?.name
+      : '') ||
+    '';
 
   const sandboxConfig = await loadSandboxConfig(settings, argv);
   const screenReader =
@@ -980,8 +989,6 @@ export async function loadCliConfig(
     }
   }
 
-  const modelProvidersConfig = settings.modelProviders;
-
   return new Config({
     sessionId,
     sessionData,
@@ -1039,11 +1046,24 @@ export async function loadCliConfig(
     inputFormat,
     outputFormat,
     includePartialMessages,
-    modelProvidersConfig,
-    generationConfigSources: resolvedCliConfig.sources,
-    generationConfig: resolvedCliConfig.generationConfig,
+    generationConfig: {
+      ...(settings.model?.generationConfig || {}),
+      model: resolvedModel,
+      apiKey,
+      baseUrl,
+      enableOpenAILogging:
+        (typeof argv.openaiLogging === 'undefined'
+          ? settings.model?.enableOpenAILogging
+          : argv.openaiLogging) ?? false,
+      openAILoggingDir:
+        argv.openaiLoggingDir || settings.model?.openAILoggingDir,
+    },
     cliVersion: await getCliVersion(),
-    webSearch: buildWebSearchConfig(argv, settings, selectedAuthType),
+    webSearch: buildWebSearchConfig(
+      argv,
+      settings,
+      settings.security?.auth?.selectedType,
+    ),
     summarizeToolOutput: settings.model?.summarizeToolOutput,
     ideMode,
     chatCompression: settings.model?.chatCompression,

packages/cli/src/config/modelProvidersScope.test.ts

@@ -1,87 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, expect, it } from 'vitest';
-import { SettingScope } from './settings.js';
-import { getPersistScopeForModelSelection } from './modelProvidersScope.js';
-
-function makeSettings({
-  isTrusted,
-  userModelProviders,
-  workspaceModelProviders,
-}: {
-  isTrusted: boolean;
-  userModelProviders?: unknown;
-  workspaceModelProviders?: unknown;
-}) {
-  const userSettings: Record<string, unknown> = {};
-  const workspaceSettings: Record<string, unknown> = {};
-
-  // When undefined, treat as "not present in this scope" (the key is omitted),
-  // matching how LoadedSettings is shaped when a settings file doesn't define it.
-  if (userModelProviders !== undefined) {
-    userSettings['modelProviders'] = userModelProviders;
-  }
-  if (workspaceModelProviders !== undefined) {
-    workspaceSettings['modelProviders'] = workspaceModelProviders;
-  }
-
-  return {
-    isTrusted,
-    user: { settings: userSettings },
-    workspace: { settings: workspaceSettings },
-  } as unknown as import('./settings.js').LoadedSettings;
-}
-
-describe('getPersistScopeForModelSelection', () => {
-  it('prefers workspace when trusted and workspace defines modelProviders', () => {
-    const settings = makeSettings({
-      isTrusted: true,
-      workspaceModelProviders: {},
-      userModelProviders: { anything: true },
-    });
-
-    expect(getPersistScopeForModelSelection(settings)).toBe(
-      SettingScope.Workspace,
-    );
-  });
-
-  it('falls back to user when workspace does not define modelProviders', () => {
-    const settings = makeSettings({
-      isTrusted: true,
-      workspaceModelProviders: undefined,
-      userModelProviders: {},
-    });
-
-    expect(getPersistScopeForModelSelection(settings)).toBe(SettingScope.User);
-  });
-
-  it('ignores workspace modelProviders when workspace is untrusted', () => {
-    const settings = makeSettings({
-      isTrusted: false,
-      workspaceModelProviders: {},
-      userModelProviders: undefined,
-    });
-
-    expect(getPersistScopeForModelSelection(settings)).toBe(SettingScope.User);
-  });
-
-  it('falls back to legacy trust heuristic when neither scope defines modelProviders', () => {
-    const trusted = makeSettings({
-      isTrusted: true,
-      userModelProviders: undefined,
-      workspaceModelProviders: undefined,
-    });
-    expect(getPersistScopeForModelSelection(trusted)).toBe(SettingScope.User);
-
-    const untrusted = makeSettings({
-      isTrusted: false,
-      userModelProviders: undefined,
-      workspaceModelProviders: undefined,
-    });
-    expect(getPersistScopeForModelSelection(untrusted)).toBe(SettingScope.User);
-  });
-});

packages/cli/src/config/modelProvidersScope.ts

@@ -1,48 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { SettingScope, type LoadedSettings } from './settings.js';
-
-function hasOwnModelProviders(settingsObj: unknown): boolean {
-  if (!settingsObj || typeof settingsObj !== 'object') {
-    return false;
-  }
-  const obj = settingsObj as Record<string, unknown>;
-  // Treat an explicitly configured empty object (modelProviders: {}) as "owned"
-  // by this scope, which is important when mergeStrategy is REPLACE.
-  return Object.prototype.hasOwnProperty.call(obj, 'modelProviders');
-}
-
-/**
- * Returns which writable scope (Workspace/User) owns the effective modelProviders
- * configuration.
- *
- * Note: Workspace scope is only considered when the workspace is trusted.
- */
-export function getModelProvidersOwnerScope(
-  settings: LoadedSettings,
-): SettingScope | undefined {
-  if (settings.isTrusted && hasOwnModelProviders(settings.workspace.settings)) {
-    return SettingScope.Workspace;
-  }
-
-  if (hasOwnModelProviders(settings.user.settings)) {
-    return SettingScope.User;
-  }
-
-  return undefined;
-}
-
-/**
- * Choose the settings scope to persist a model selection.
- * Prefer persisting back to the scope that contains the effective modelProviders
- * config, otherwise fall back to the legacy trust-based heuristic.
- */
-export function getPersistScopeForModelSelection(
-  settings: LoadedSettings,
-): SettingScope {
-  return getModelProvidersOwnerScope(settings) ?? SettingScope.User;
-}

packages/cli/src/config/settingsSchema.ts

@@ -10,7 +10,6 @@ import type {
   TelemetrySettings,
   AuthType,
   ChatCompressionSettings,
-  ModelProvidersConfig,
 } from '@qwen-code/qwen-code-core';
 import {
   ApprovalMode,
@@ -103,19 +102,6 @@ const SETTINGS_SCHEMA = {
     mergeStrategy: MergeStrategy.SHALLOW_MERGE,
   },
 
-  // Model providers configuration grouped by authType
-  modelProviders: {
-    type: 'object',
-    label: 'Model Providers',
-    category: 'Model',
-    requiresRestart: false,
-    default: {} as ModelProvidersConfig,
-    description:
-      'Model providers configuration grouped by authType. Each authType contains an array of model configurations.',
-    showInDialog: false,
-    mergeStrategy: MergeStrategy.REPLACE,
-  },
-
   general: {
     type: 'object',
     label: 'General',

packages/cli/src/core/initializer.ts

@@ -45,9 +45,7 @@ export async function initializeApp(
   // Auto-detect and set LLM output language on first use
   initializeLlmOutputLanguage();
 
-  // Use authType from modelsConfig which respects CLI --auth-type argument
-  // over settings.security.auth.selectedType
-  const authType = config.modelsConfig.getCurrentAuthType();
+  const authType = settings.merged.security?.auth?.selectedType;
   const authError = await performInitialAuth(config, authType);
 
   // Fallback to user select when initial authentication fails
@@ -61,7 +59,7 @@ export async function initializeApp(
   const themeError = validateTheme(settings);
 
   const shouldOpenAuthDialog =
-    !config.modelsConfig.wasAuthTypeExplicitlyProvided() || !!authError;
+    settings.merged.security?.auth?.selectedType === undefined || !!authError;
 
   if (config.getIdeMode()) {
     const ideClient = await IdeClient.getInstance();

packages/cli/src/gemini.test.tsx

@@ -87,15 +87,6 @@ vi.mock('./config/sandboxConfig.js', () => ({
   loadSandboxConfig: vi.fn(),
 }));
 
-vi.mock('./core/initializer.js', () => ({
-  initializeApp: vi.fn().mockResolvedValue({
-    authError: null,
-    themeError: null,
-    shouldOpenAuthDialog: false,
-    geminiMdFileCount: 0,
-  }),
-}));
-
 describe('gemini.tsx main function', () => {
   let originalEnvGeminiSandbox: string | undefined;
   let originalEnvSandbox: string | undefined;
@@ -371,6 +362,7 @@ describe('gemini.tsx main function', () => {
     expect(inputArg).toBe('hello stream');
 
     expect(validateAuthSpy).toHaveBeenCalledWith(
+      undefined,
       undefined,
       configStub,
       expect.any(Object),

packages/cli/src/gemini.tsx

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type { Config } from '@qwen-code/qwen-code-core';
+import type { Config, AuthType } from '@qwen-code/qwen-code-core';
 import { InputFormat, logUserPrompt } from '@qwen-code/qwen-code-core';
 import { render } from 'ink';
 import dns from 'node:dns';
@@ -252,20 +252,22 @@ export async function main() {
         argv,
       );
 
-      if (!settings.merged.security?.auth?.useExternal) {
+      if (
+        settings.merged.security?.auth?.selectedType &&
+        !settings.merged.security?.auth?.useExternal
+      ) {
         // Validate authentication here because the sandbox will interfere with the Oauth2 web redirect.
         try {
-          const authType = partialConfig.modelsConfig.getCurrentAuthType();
-          // Fresh users may not have selected/persisted an authType yet.
-          // In that case, defer auth prompting/selection to the main interactive flow.
-          if (authType) {
-            const err = validateAuthMethod(authType, partialConfig);
-            if (err) {
-              throw new Error(err);
-            }
-
-            await partialConfig.refreshAuth(authType);
+          const err = validateAuthMethod(
+            settings.merged.security.auth.selectedType,
+          );
+          if (err) {
+            throw new Error(err);
           }
+
+          await partialConfig.refreshAuth(
+            settings.merged.security.auth.selectedType,
+          );
         } catch (err) {
           console.error('Error authenticating:', err);
           process.exit(1);
@@ -438,6 +440,8 @@ export async function main() {
     }
 
     const nonInteractiveConfig = await validateNonInteractiveAuth(
+      (argv.authType as AuthType) ||
+        settings.merged.security?.auth?.selectedType,
       settings.merged.security?.auth?.useExternal,
       config,
       settings,

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

@@ -45,8 +45,7 @@ export default {
   'Initializing...': 'Initialisierung...',
   'Connecting to MCP servers... ({{connected}}/{{total}})':
     'Verbindung zu MCP-Servern wird hergestellt... ({{connected}}/{{total}})',
-  'Type your message or @path/to/file':
-    'Nachricht eingeben oder @Pfad/zur/Datei',
+  'Type your message or @path/to/file': 'Nachricht eingeben oder @Pfad/zur/Datei',
   "Press 'i' for INSERT mode and 'Esc' for NORMAL mode.":
     "Drücken Sie 'i' für den EINFÜGE-Modus und 'Esc' für den NORMAL-Modus.",
   'Cancel operation / Clear input (double press)':
@@ -90,8 +89,7 @@ export default {
   'No tools available': 'Keine Werkzeuge verfügbar',
   'View or change the approval mode for tool usage':
     'Genehmigungsmodus für Werkzeugnutzung anzeigen oder ändern',
-  'View or change the language setting':
-    'Spracheinstellung anzeigen oder ändern',
+  'View or change the language setting': 'Spracheinstellung anzeigen oder ändern',
   'change the theme': 'Design ändern',
   'Select Theme': 'Design auswählen',
   Preview: 'Vorschau',
@@ -215,16 +213,14 @@ export default {
   'All Tools': 'Alle Werkzeuge',
   'Read-only Tools': 'Nur-Lese-Werkzeuge',
   'Read & Edit Tools': 'Lese- und Bearbeitungswerkzeuge',
-  'Read & Edit & Execution Tools':
-    'Lese-, Bearbeitungs- und Ausführungswerkzeuge',
+  'Read & Edit & Execution Tools': 'Lese-, Bearbeitungs- und Ausführungswerkzeuge',
   'All tools selected, including MCP tools':
     'Alle Werkzeuge ausgewählt, einschließlich MCP-Werkzeuge',
   'Selected tools:': 'Ausgewählte Werkzeuge:',
   'Read-only tools:': 'Nur-Lese-Werkzeuge:',
   'Edit tools:': 'Bearbeitungswerkzeuge:',
   'Execution tools:': 'Ausführungswerkzeuge:',
-  'Step {{n}}: Choose Background Color':
-    'Schritt {{n}}: Hintergrundfarbe wählen',
+  'Step {{n}}: Choose Background Color': 'Schritt {{n}}: Hintergrundfarbe wählen',
   'Step {{n}}: Confirm and Save': 'Schritt {{n}}: Bestätigen und Speichern',
   // Agents - Navigation & Instructions
   'Esc to cancel': 'Esc zum Abbrechen',
@@ -249,16 +245,14 @@ export default {
   'e.g., Reviews code for best practices and potential bugs.':
     'z.B. Überprüft Code auf Best Practices und mögliche Fehler.',
   'Description cannot be empty.': 'Beschreibung darf nicht leer sein.',
-  'Failed to launch editor: {{error}}':
-    'Fehler beim Starten des Editors: {{error}}',
+  'Failed to launch editor: {{error}}': 'Fehler beim Starten des Editors: {{error}}',
   'Failed to save and edit subagent: {{error}}':
     'Fehler beim Speichern und Bearbeiten des Unteragenten: {{error}}',
 
   // ============================================================================
   // Commands - General (continued)
   // ============================================================================
-  'View and edit Qwen Code settings':
-    'Qwen Code Einstellungen anzeigen und bearbeiten',
+  'View and edit Qwen Code settings': 'Qwen Code Einstellungen anzeigen und bearbeiten',
   Settings: 'Einstellungen',
   '(Use Enter to select{{tabText}})': '(Enter zum Auswählen{{tabText}})',
   ', Tab to change focus': ', Tab zum Fokuswechsel',
@@ -314,8 +308,7 @@ export default {
   'Use Ripgrep': 'Ripgrep verwenden',
   'Use Builtin Ripgrep': 'Integriertes Ripgrep verwenden',
   'Enable Tool Output Truncation': 'Werkzeugausgabe-Kürzung aktivieren',
-  'Tool Output Truncation Threshold':
-    'Schwellenwert für Werkzeugausgabe-Kürzung',
+  'Tool Output Truncation Threshold': 'Schwellenwert für Werkzeugausgabe-Kürzung',
   'Tool Output Truncation Lines': 'Zeilen für Werkzeugausgabe-Kürzung',
   'Folder Trust': 'Ordnervertrauen',
   'Vision Model Preview': 'Vision-Modell-Vorschau',
@@ -371,8 +364,7 @@ export default {
   'Failed to parse {{terminalName}} keybindings.json. The file contains invalid JSON. Please fix the file manually or delete it to allow automatic configuration.':
     'Fehler beim Parsen von {{terminalName}} keybindings.json. Die Datei enthält ungültiges JSON. Bitte korrigieren Sie die Datei manuell oder löschen Sie sie, um automatische Konfiguration zu ermöglichen.',
   'Error: {{error}}': 'Fehler: {{error}}',
-  'Shift+Enter binding already exists':
-    'Umschalt+Enter-Belegung existiert bereits',
+  'Shift+Enter binding already exists': 'Umschalt+Enter-Belegung existiert bereits',
   'Ctrl+Enter binding already exists': 'Strg+Enter-Belegung existiert bereits',
   'Existing keybindings detected. Will not modify to avoid conflicts.':
     'Bestehende Tastenbelegungen erkannt. Keine Änderungen, um Konflikte zu vermeiden.',
@@ -406,8 +398,7 @@ export default {
   'Set UI language': 'UI-Sprache festlegen',
   'Set LLM output language': 'LLM-Ausgabesprache festlegen',
   'Usage: /language ui [zh-CN|en-US]': 'Verwendung: /language ui [zh-CN|en-US]',
-  'Usage: /language output <language>':
-    'Verwendung: /language output <Sprache>',
+  'Usage: /language output <language>': 'Verwendung: /language output <Sprache>',
   'Example: /language output 中文': 'Beispiel: /language output Deutsch',
   'Example: /language output English': 'Beispiel: /language output English',
   'Example: /language output 日本語': 'Beispiel: /language output Japanisch',
@@ -428,8 +419,7 @@ export default {
   '  - en-US: English': '  - en-US: Englisch',
   'Set UI language to Simplified Chinese (zh-CN)':
     'UI-Sprache auf Vereinfachtes Chinesisch (zh-CN) setzen',
-  'Set UI language to English (en-US)':
-    'UI-Sprache auf Englisch (en-US) setzen',
+  'Set UI language to English (en-US)': 'UI-Sprache auf Englisch (en-US) setzen',
 
   // ============================================================================
   // Commands - Approval Mode
@@ -437,8 +427,7 @@ export default {
   'Approval Mode': 'Genehmigungsmodus',
   'Current approval mode: {{mode}}': 'Aktueller Genehmigungsmodus: {{mode}}',
   'Available approval modes:': 'Verfügbare Genehmigungsmodi:',
-  'Approval mode changed to: {{mode}}':
-    'Genehmigungsmodus geändert zu: {{mode}}',
+  'Approval mode changed to: {{mode}}': 'Genehmigungsmodus geändert zu: {{mode}}',
   'Approval mode changed to: {{mode}} (saved to {{scope}} settings{{location}})':
     'Genehmigungsmodus geändert zu: {{mode}} (gespeichert in {{scope}} Einstellungen{{location}})',
   'Usage: /approval-mode <mode> [--session|--user|--project]':
@@ -463,16 +452,14 @@ export default {
     'Fehler beim Ändern des Genehmigungsmodus: {{error}}',
   'Apply to current session only (temporary)':
     'Nur auf aktuelle Sitzung anwenden (temporär)',
-  'Persist for this project/workspace':
-    'Für dieses Projekt/Arbeitsbereich speichern',
+  'Persist for this project/workspace': 'Für dieses Projekt/Arbeitsbereich speichern',
   'Persist for this user on this machine':
     'Für diesen Benutzer auf diesem Computer speichern',
   'Analyze only, do not modify files or execute commands':
     'Nur analysieren, keine Dateien ändern oder Befehle ausführen',
   'Require approval for file edits or shell commands':
     'Genehmigung für Dateibearbeitungen oder Shell-Befehle erforderlich',
-  'Automatically approve file edits':
-    'Dateibearbeitungen automatisch genehmigen',
+  'Automatically approve file edits': 'Dateibearbeitungen automatisch genehmigen',
   'Automatically approve all tools': 'Alle Werkzeuge automatisch genehmigen',
   'Workspace approval mode exists and takes priority. User-level change will have no effect.':
     'Arbeitsbereich-Genehmigungsmodus existiert und hat Vorrang. Benutzerebene-Änderung hat keine Wirkung.',
@@ -488,14 +475,12 @@ export default {
   'Commands for interacting with memory.':
     'Befehle für die Interaktion mit dem Speicher.',
   'Show the current memory contents.': 'Aktuellen Speicherinhalt anzeigen.',
-  'Show project-level memory contents.':
-    'Projektebene-Speicherinhalt anzeigen.',
+  'Show project-level memory contents.': 'Projektebene-Speicherinhalt anzeigen.',
   'Show global memory contents.': 'Globalen Speicherinhalt anzeigen.',
   'Add content to project-level memory.':
     'Inhalt zum Projektebene-Speicher hinzufügen.',
   'Add content to global memory.': 'Inhalt zum globalen Speicher hinzufügen.',
-  'Refresh the memory from the source.':
-    'Speicher aus der Quelle aktualisieren.',
+  'Refresh the memory from the source.': 'Speicher aus der Quelle aktualisieren.',
   'Usage: /memory add --project <text to remember>':
     'Verwendung: /memory add --project <zu merkender Text>',
   'Usage: /memory add --global <text to remember>':
@@ -535,8 +520,7 @@ export default {
     'Konfigurierte MCP-Server und Werkzeuge auflisten',
   'Restarts MCP servers.': 'MCP-Server neu starten.',
   'Config not loaded.': 'Konfiguration nicht geladen.',
-  'Could not retrieve tool registry.':
-    'Werkzeugregister konnte nicht abgerufen werden.',
+  'Could not retrieve tool registry.': 'Werkzeugregister konnte nicht abgerufen werden.',
   'No MCP servers configured with OAuth authentication.':
     'Keine MCP-Server mit OAuth-Authentifizierung konfiguriert.',
   'MCP servers with OAuth authentication:':
@@ -555,8 +539,7 @@ export default {
   // Commands - Chat
   // ============================================================================
   'Manage conversation history.': 'Gesprächsverlauf verwalten.',
-  'List saved conversation checkpoints':
-    'Gespeicherte Gesprächsprüfpunkte auflisten',
+  'List saved conversation checkpoints': 'Gespeicherte Gesprächsprüfpunkte auflisten',
   'No saved conversation checkpoints found.':
     'Keine gespeicherten Gesprächsprüfpunkte gefunden.',
   'List of saved conversations:': 'Liste gespeicherter Gespräche:',
@@ -606,8 +589,7 @@ export default {
     'Kein Chat-Client verfügbar, um Zusammenfassung zu generieren.',
   'Already generating summary, wait for previous request to complete':
     'Zusammenfassung wird bereits generiert, warten Sie auf Abschluss der vorherigen Anfrage',
-  'No conversation found to summarize.':
-    'Kein Gespräch zum Zusammenfassen gefunden.',
+  'No conversation found to summarize.': 'Kein Gespräch zum Zusammenfassen gefunden.',
   'Failed to generate project context summary: {{error}}':
     'Fehler beim Generieren der Projektkontextzusammenfassung: {{error}}',
   'Saved project summary to {{filePathForDisplay}}.':
@@ -623,8 +605,7 @@ export default {
   'Switch the model for this session': 'Modell für diese Sitzung wechseln',
   'Content generator configuration not available.':
     'Inhaltsgenerator-Konfiguration nicht verfügbar.',
-  'Authentication type not available.':
-    'Authentifizierungstyp nicht verfügbar.',
+  'Authentication type not available.': 'Authentifizierungstyp nicht verfügbar.',
   'No models available for the current authentication type ({{authType}}).':
     'Keine Modelle für den aktuellen Authentifizierungstyp ({{authType}}) verfügbar.',
 
@@ -641,8 +622,7 @@ export default {
   // ============================================================================
   'Already compressing, wait for previous request to complete':
     'Komprimierung läuft bereits, warten Sie auf Abschluss der vorherigen Anfrage',
-  'Failed to compress chat history.':
-    'Fehler beim Komprimieren des Chatverlaufs.',
+  'Failed to compress chat history.': 'Fehler beim Komprimieren des Chatverlaufs.',
   'Failed to compress chat history: {{error}}':
     'Fehler beim Komprimieren des Chatverlaufs: {{error}}',
   'Compressing chat history': 'Chatverlauf wird komprimiert',
@@ -664,12 +644,10 @@ export default {
     'Bitte geben Sie mindestens einen Pfad zum Hinzufügen an.',
   'The /directory add command is not supported in restrictive sandbox profiles. Please use --include-directories when starting the session instead.':
     'Der Befehl /directory add wird in restriktiven Sandbox-Profilen nicht unterstützt. Bitte verwenden Sie --include-directories beim Starten der Sitzung.',
-  "Error adding '{{path}}': {{error}}":
-    "Fehler beim Hinzufügen von '{{path}}': {{error}}",
+  "Error adding '{{path}}': {{error}}": "Fehler beim Hinzufügen von '{{path}}': {{error}}",
   'Successfully added QWEN.md files from the following directories if there are:\n- {{directories}}':
     'QWEN.md-Dateien aus folgenden Verzeichnissen erfolgreich hinzugefügt, falls vorhanden:\n- {{directories}}',
-  'Error refreshing memory: {{error}}':
-    'Fehler beim Aktualisieren des Speichers: {{error}}',
+  'Error refreshing memory: {{error}}': 'Fehler beim Aktualisieren des Speichers: {{error}}',
   'Successfully added directories:\n- {{directories}}':
     'Verzeichnisse erfolgreich hinzugefügt:\n- {{directories}}',
   'Current workspace directories:\n{{directories}}':
@@ -699,8 +677,7 @@ export default {
   'Yes, allow always': 'Ja, immer erlauben',
   'Modify with external editor': 'Mit externem Editor bearbeiten',
   'No, suggest changes (esc)': 'Nein, Änderungen vorschlagen (Esc)',
-  "Allow execution of: '{{command}}'?":
-    "Ausführung erlauben von: '{{command}}'?",
+  "Allow execution of: '{{command}}'?": "Ausführung erlauben von: '{{command}}'?",
   'Yes, allow always ...': 'Ja, immer erlauben ...',
   'Yes, and auto-accept edits': 'Ja, und Änderungen automatisch akzeptieren',
   'Yes, and manually approve edits': 'Ja, und Änderungen manuell genehmigen',
@@ -772,14 +749,12 @@ export default {
   'Qwen OAuth authentication cancelled.':
     'Qwen OAuth-Authentifizierung abgebrochen.',
   'Qwen OAuth Authentication': 'Qwen OAuth-Authentifizierung',
-  'Please visit this URL to authorize:':
-    'Bitte besuchen Sie diese URL zur Autorisierung:',
+  'Please visit this URL to authorize:': 'Bitte besuchen Sie diese URL zur Autorisierung:',
   'Or scan the QR code below:': 'Oder scannen Sie den QR-Code unten:',
   'Waiting for authorization': 'Warten auf Autorisierung',
   'Time remaining:': 'Verbleibende Zeit:',
   '(Press ESC or CTRL+C to cancel)': '(ESC oder STRG+C zum Abbrechen drücken)',
-  'Qwen OAuth Authentication Timeout':
-    'Qwen OAuth-Authentifizierung abgelaufen',
+  'Qwen OAuth Authentication Timeout': 'Qwen OAuth-Authentifizierung abgelaufen',
   'OAuth token expired (over {{seconds}} seconds). Please select authentication method again.':
     'OAuth-Token abgelaufen (über {{seconds}} Sekunden). Bitte wählen Sie erneut eine Authentifizierungsmethode.',
   'Press any key to return to authentication type selection.':
@@ -792,22 +767,6 @@ export default {
     'Authentifizierung abgelaufen. Bitte versuchen Sie es erneut.',
   'Waiting for auth... (Press ESC or CTRL+C to cancel)':
     'Warten auf Authentifizierung... (ESC oder STRG+C zum Abbrechen drücken)',
-  'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.':
-    'API-Schlüssel für OpenAI-kompatible Authentifizierung fehlt. Setzen Sie settings.security.auth.apiKey oder die Umgebungsvariable {{envKeyHint}}.',
-  '{{envKeyHint}} environment variable not found.':
-    'Umgebungsvariable {{envKeyHint}} wurde nicht gefunden.',
-  '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.':
-    'Umgebungsvariable {{envKeyHint}} wurde nicht gefunden. Bitte legen Sie sie in Ihrer .env-Datei oder den Systemumgebungsvariablen fest.',
-  '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.':
-    'Umgebungsvariable {{envKeyHint}} wurde nicht gefunden (oder setzen Sie settings.security.auth.apiKey). Bitte legen Sie sie in Ihrer .env-Datei oder den Systemumgebungsvariablen fest.',
-  'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.':
-    'API-Schlüssel für OpenAI-kompatible Authentifizierung fehlt. Setzen Sie die Umgebungsvariable {{envKeyHint}}.',
-  'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.':
-    'Anthropic-Anbieter fehlt erforderliche baseUrl in modelProviders[].baseUrl.',
-  'ANTHROPIC_BASE_URL environment variable not found.':
-    'Umgebungsvariable ANTHROPIC_BASE_URL wurde nicht gefunden.',
-  'Invalid auth method selected.':
-    'Ungültige Authentifizierungsmethode ausgewählt.',
   'Failed to authenticate. Message: {{message}}':
     'Authentifizierung fehlgeschlagen. Meldung: {{message}}',
   'Authenticated successfully with {{authType}} credentials.':
@@ -820,8 +779,7 @@ export default {
   'API Key:': 'API-Schlüssel:',
   'Invalid credentials: {{errorMessage}}':
     'Ungültige Anmeldedaten: {{errorMessage}}',
-  'Failed to validate credentials':
-    'Anmeldedaten konnten nicht validiert werden',
+  'Failed to validate credentials': 'Anmeldedaten konnten nicht validiert werden',
   'Press Enter to continue, Tab/↑↓ to navigate, Esc to cancel':
     'Enter zum Fortfahren, Tab/↑↓ zum Navigieren, Esc zum Abbrechen',
 
@@ -830,15 +788,6 @@ export default {
   // ============================================================================
   'Select Model': 'Modell auswählen',
   '(Press Esc to close)': '(Esc zum Schließen drücken)',
-  'Current (effective) configuration': 'Aktuelle (wirksame) Konfiguration',
-  AuthType: 'Authentifizierungstyp',
-  'API Key': 'API-Schlüssel',
-  unset: 'nicht gesetzt',
-  '(default)': '(Standard)',
-  '(set)': '(gesetzt)',
-  '(not set)': '(nicht gesetzt)',
-  "Failed to switch model to '{{modelId}}'.\n\n{{error}}":
-    "Modell konnte nicht auf '{{modelId}}' umgestellt werden.\n\n{{error}}",
   'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
     'Das neueste Qwen Coder Modell von Alibaba Cloud ModelStudio (Version: qwen3-coder-plus-2025-09-23)',
   'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':
@@ -928,10 +877,8 @@ export default {
   // ============================================================================
   // Exit Screen / Stats
   // ============================================================================
-  'Agent powering down. Goodbye!':
-    'Agent wird heruntergefahren. Auf Wiedersehen!',
-  'To continue this session, run':
-    'Um diese Sitzung fortzusetzen, führen Sie aus',
+  'Agent powering down. Goodbye!': 'Agent wird heruntergefahren. Auf Wiedersehen!',
+  'To continue this session, run': 'Um diese Sitzung fortzusetzen, führen Sie aus',
   'Interaction Summary': 'Interaktionszusammenfassung',
   'Session ID:': 'Sitzungs-ID:',
   'Tool Calls:': 'Werkzeugaufrufe:',

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

@@ -770,21 +770,6 @@ export default {
     'Authentication timed out. Please try again.',
   'Waiting for auth... (Press ESC or CTRL+C to cancel)':
     'Waiting for auth... (Press ESC or CTRL+C to cancel)',
-  'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.':
-    'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.',
-  '{{envKeyHint}} environment variable not found.':
-    '{{envKeyHint}} environment variable not found.',
-  '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.':
-    '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.',
-  '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.':
-    '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.',
-  'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.':
-    'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.',
-  'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.':
-    'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.',
-  'ANTHROPIC_BASE_URL environment variable not found.':
-    'ANTHROPIC_BASE_URL environment variable not found.',
-  'Invalid auth method selected.': 'Invalid auth method selected.',
   'Failed to authenticate. Message: {{message}}':
     'Failed to authenticate. Message: {{message}}',
   'Authenticated successfully with {{authType}} credentials.':
@@ -806,15 +791,6 @@ export default {
   // ============================================================================
   'Select Model': 'Select Model',
   '(Press Esc to close)': '(Press Esc to close)',
-  'Current (effective) configuration': 'Current (effective) configuration',
-  AuthType: 'AuthType',
-  'API Key': 'API Key',
-  unset: 'unset',
-  '(default)': '(default)',
-  '(set)': '(set)',
-  '(not set)': '(not set)',
-  "Failed to switch model to '{{modelId}}'.\n\n{{error}}":
-    "Failed to switch model to '{{modelId}}'.\n\n{{error}}",
   'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
     'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
   'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':

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

@@ -786,21 +786,6 @@ export default {
     'Время ожидания авторизации истекло. Пожалуйста, попробуйте снова.',
   'Waiting for auth... (Press ESC or CTRL+C to cancel)':
     'Ожидание авторизации... (Нажмите ESC или CTRL+C для отмены)',
-  'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.':
-    'Отсутствует API-ключ для аутентификации, совместимой с OpenAI. Укажите settings.security.auth.apiKey или переменную окружения {{envKeyHint}}.',
-  '{{envKeyHint}} environment variable not found.':
-    'Переменная окружения {{envKeyHint}} не найдена.',
-  '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.':
-    'Переменная окружения {{envKeyHint}} не найдена. Укажите её в файле .env или среди системных переменных.',
-  '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.':
-    'Переменная окружения {{envKeyHint}} не найдена (или установите settings.security.auth.apiKey). Укажите её в файле .env или среди системных переменных.',
-  'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.':
-    'Отсутствует API-ключ для аутентификации, совместимой с OpenAI. Установите переменную окружения {{envKeyHint}}.',
-  'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.':
-    'У провайдера Anthropic отсутствует обязательный baseUrl в modelProviders[].baseUrl.',
-  'ANTHROPIC_BASE_URL environment variable not found.':
-    'Переменная окружения ANTHROPIC_BASE_URL не найдена.',
-  'Invalid auth method selected.': 'Выбран недопустимый метод авторизации.',
   'Failed to authenticate. Message: {{message}}':
     'Не удалось авторизоваться. Сообщение: {{message}}',
   'Authenticated successfully with {{authType}} credentials.':
@@ -822,15 +807,6 @@ export default {
   // ============================================================================
   'Select Model': 'Выбрать модель',
   '(Press Esc to close)': '(Нажмите Esc для закрытия)',
-  'Current (effective) configuration': 'Текущая (фактическая) конфигурация',
-  AuthType: 'Тип авторизации',
-  'API Key': 'API-ключ',
-  unset: 'не задано',
-  '(default)': '(по умолчанию)',
-  '(set)': '(установлено)',
-  '(not set)': '(не задано)',
-  "Failed to switch model to '{{modelId}}'.\n\n{{error}}":
-    "Не удалось переключиться на модель '{{modelId}}'.\n\n{{error}}",
   'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
     'Последняя модель Qwen Coder от Alibaba Cloud ModelStudio (версия: qwen3-coder-plus-2025-09-23)',
   'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':

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

@@ -728,21 +728,6 @@ export default {
   'Authentication timed out. Please try again.': '认证超时。请重试。',
   'Waiting for auth... (Press ESC or CTRL+C to cancel)':
     '正在等待认证...（按 ESC 或 CTRL+C 取消）',
-  'Missing API key for OpenAI-compatible auth. Set settings.security.auth.apiKey, or set the {{envKeyHint}} environment variable.':
-    '缺少 OpenAI 兼容认证的 API 密钥。请设置 settings.security.auth.apiKey 或设置 {{envKeyHint}} 环境变量。',
-  '{{envKeyHint}} environment variable not found.':
-    '未找到 {{envKeyHint}} 环境变量。',
-  '{{envKeyHint}} environment variable not found. Please set it in your .env file or environment variables.':
-    '未找到 {{envKeyHint}} 环境变量。请在 .env 文件或系统环境变量中进行设置。',
-  '{{envKeyHint}} environment variable not found (or set settings.security.auth.apiKey). Please set it in your .env file or environment variables.':
-    '未找到 {{envKeyHint}} 环境变量（或设置 settings.security.auth.apiKey）。请在 .env 文件或系统环境变量中进行设置。',
-  'Missing API key for OpenAI-compatible auth. Set the {{envKeyHint}} environment variable.':
-    '缺少 OpenAI 兼容认证的 API 密钥。请设置 {{envKeyHint}} 环境变量。',
-  'Anthropic provider missing required baseUrl in modelProviders[].baseUrl.':
-    'Anthropic 提供商缺少必需的 baseUrl，请在 modelProviders[].baseUrl 中配置。',
-  'ANTHROPIC_BASE_URL environment variable not found.':
-    '未找到 ANTHROPIC_BASE_URL 环境变量。',
-  'Invalid auth method selected.': '选择了无效的认证方式。',
   'Failed to authenticate. Message: {{message}}': '认证失败。消息：{{message}}',
   'Authenticated successfully with {{authType}} credentials.':
     '使用 {{authType}} 凭据成功认证。',
@@ -762,15 +747,6 @@ export default {
   // ============================================================================
   'Select Model': '选择模型',
   '(Press Esc to close)': '（按 Esc 关闭）',
-  'Current (effective) configuration': '当前（实际生效）配置',
-  AuthType: '认证方式',
-  'API Key': 'API 密钥',
-  unset: '未设置',
-  '(default)': '(默认)',
-  '(set)': '(已设置)',
-  '(not set)': '(未设置)',
-  "Failed to switch model to '{{modelId}}'.\n\n{{error}}":
-    "无法切换到模型 '{{modelId}}'.\n\n{{error}}",
   'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
     '来自阿里云 ModelStudio 的最新 Qwen Coder 模型（版本：qwen3-coder-plus-2025-09-23）',
   'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':

packages/cli/src/test-utils/render.tsx

@@ -6,12 +6,10 @@
 
 import { render } from 'ink-testing-library';
 import type React from 'react';
-import type { Config } from '@qwen-code/qwen-code-core';
 import { LoadedSettings } from '../config/settings.js';
 import { KeypressProvider } from '../ui/contexts/KeypressContext.js';
 import { SettingsContext } from '../ui/contexts/SettingsContext.js';
 import { ShellFocusContext } from '../ui/contexts/ShellFocusContext.js';
-import { ConfigContext } from '../ui/contexts/ConfigContext.js';
 
 const mockSettings = new LoadedSettings(
   { path: '', settings: {}, originalSettings: {} },
@@ -24,24 +22,14 @@ const mockSettings = new LoadedSettings(
 
 export const renderWithProviders = (
   component: React.ReactElement,
-  {
-    shellFocus = true,
-    settings = mockSettings,
-    config = undefined,
-  }: {
-    shellFocus?: boolean;
-    settings?: LoadedSettings;
-    config?: Config;
-  } = {},
+  { shellFocus = true, settings = mockSettings } = {},
 ): ReturnType<typeof render> =>
   render(
     <SettingsContext.Provider value={settings}>
-      <ConfigContext.Provider value={config}>
-        <ShellFocusContext.Provider value={shellFocus}>
-          <KeypressProvider kittyProtocolEnabled={true}>
-            {component}
-          </KeypressProvider>
-        </ShellFocusContext.Provider>
-      </ConfigContext.Provider>
+      <ShellFocusContext.Provider value={shellFocus}>
+        <KeypressProvider kittyProtocolEnabled={true}>
+          {component}
+        </KeypressProvider>
+      </ShellFocusContext.Provider>
     </SettingsContext.Provider>,
   );

packages/cli/src/ui/AppContainer.tsx

@@ -32,6 +32,7 @@ import {
   type Config,
   type IdeInfo,
   type IdeContext,
+  DEFAULT_GEMINI_FLASH_MODEL,
   IdeClient,
   ideContextStore,
   getErrorMessage,
@@ -179,10 +180,15 @@ export const AppContainer = (props: AppContainerProps) => {
     [],
   );
 
-  // Helper to determine the current model (polled, since Config has no model-change event).
-  const getCurrentModel = useCallback(() => config.getModel(), [config]);
+  // Helper to determine the effective model, considering the fallback state.
+  const getEffectiveModel = useCallback(() => {
+    if (config.isInFallbackMode()) {
+      return DEFAULT_GEMINI_FLASH_MODEL;
+    }
+    return config.getModel();
+  }, [config]);
 
-  const [currentModel, setCurrentModel] = useState(getCurrentModel());
+  const [currentModel, setCurrentModel] = useState(getEffectiveModel());
 
   const [isConfigInitialized, setConfigInitialized] = useState(false);
 
@@ -235,12 +241,12 @@ export const AppContainer = (props: AppContainerProps) => {
     [historyManager.addItem],
   );
 
-  // Watch for model changes (e.g., user switches model via /model)
+  // Watch for model changes (e.g., from Flash fallback)
   useEffect(() => {
     const checkModelChange = () => {
-      const model = getCurrentModel();
-      if (model !== currentModel) {
-        setCurrentModel(model);
+      const effectiveModel = getEffectiveModel();
+      if (effectiveModel !== currentModel) {
+        setCurrentModel(effectiveModel);
       }
     };
 
@@ -248,7 +254,7 @@ export const AppContainer = (props: AppContainerProps) => {
     const interval = setInterval(checkModelChange, 1000); // Check every second
 
     return () => clearInterval(interval);
-  }, [config, currentModel, getCurrentModel]);
+  }, [config, currentModel, getEffectiveModel]);
 
   const {
     consoleMessages,
@@ -370,36 +376,37 @@ export const AppContainer = (props: AppContainerProps) => {
   // Check for enforced auth type mismatch
   useEffect(() => {
     // Check for initialization error first
-    const currentAuthType = config.modelsConfig.getCurrentAuthType();
 
     if (
       settings.merged.security?.auth?.enforcedType &&
-      currentAuthType &&
-      settings.merged.security?.auth.enforcedType !== currentAuthType
+      settings.merged.security?.auth.selectedType &&
+      settings.merged.security?.auth.enforcedType !==
+        settings.merged.security?.auth.selectedType
     ) {
       onAuthError(
         t(
           'Authentication is enforced to be {{enforcedType}}, but you are currently using {{currentType}}.',
           {
-            enforcedType: String(settings.merged.security?.auth.enforcedType),
-            currentType: String(currentAuthType),
+            enforcedType: settings.merged.security?.auth.enforcedType,
+            currentType: settings.merged.security?.auth.selectedType,
           },
         ),
       );
-    } else if (!settings.merged.security?.auth?.useExternal) {
-      // If no authType is selected yet, allow the auth UI flow to prompt the user.
-      // Only validate credentials once a concrete authType exists.
-      if (currentAuthType) {
-        const error = validateAuthMethod(currentAuthType, config);
-        if (error) {
-          onAuthError(error);
-        }
+    } else if (
+      settings.merged.security?.auth?.selectedType &&
+      !settings.merged.security?.auth?.useExternal
+    ) {
+      const error = validateAuthMethod(
+        settings.merged.security.auth.selectedType,
+      );
+      if (error) {
+        onAuthError(error);
       }
     }
   }, [
+    settings.merged.security?.auth?.selectedType,
     settings.merged.security?.auth?.enforcedType,
     settings.merged.security?.auth?.useExternal,
-    config,
     onAuthError,
   ]);
 

packages/cli/src/ui/auth/AuthDialog.test.tsx

@@ -6,8 +6,7 @@
 
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
 import { AuthDialog } from './AuthDialog.js';
-import { LoadedSettings } from '../../config/settings.js';
-import type { Config } from '@qwen-code/qwen-code-core';
+import { LoadedSettings, SettingScope } from '../../config/settings.js';
 import { AuthType } from '@qwen-code/qwen-code-core';
 import { renderWithProviders } from '../../test-utils/render.js';
 import { UIStateContext } from '../contexts/UIStateContext.js';
@@ -44,24 +43,17 @@ const renderAuthDialog = (
   settings: LoadedSettings,
   uiStateOverrides: Partial<UIState> = {},
   uiActionsOverrides: Partial<UIActions> = {},
-  configAuthType: AuthType | undefined = undefined,
-  configApiKey: string | undefined = undefined,
 ) => {
   const uiState = createMockUIState(uiStateOverrides);
   const uiActions = createMockUIActions(uiActionsOverrides);
 
-  const mockConfig = {
-    getAuthType: vi.fn(() => configAuthType),
-    getContentGeneratorConfig: vi.fn(() => ({ apiKey: configApiKey })),
-  } as unknown as Config;
-
   return renderWithProviders(
     <UIStateContext.Provider value={uiState}>
       <UIActionsContext.Provider value={uiActions}>
         <AuthDialog />
       </UIActionsContext.Provider>
     </UIStateContext.Provider>,
-    { settings, config: mockConfig },
+    { settings },
   );
 };
 
@@ -429,7 +421,6 @@ describe('AuthDialog', () => {
       settings,
       {},
       { handleAuthSelect },
-      undefined, // config.getAuthType() returns undefined
     );
     await wait();
 
@@ -484,7 +475,6 @@ describe('AuthDialog', () => {
       settings,
       { authError: 'Initial error' },
       { handleAuthSelect },
-      undefined, // config.getAuthType() returns undefined
     );
     await wait();
 
@@ -538,7 +528,6 @@ describe('AuthDialog', () => {
       settings,
       {},
       { handleAuthSelect },
-      AuthType.USE_OPENAI, // config.getAuthType() returns USE_OPENAI
     );
     await wait();
 
@@ -547,7 +536,7 @@ describe('AuthDialog', () => {
     await wait();
 
     // Should call handleAuthSelect with undefined to exit
-    expect(handleAuthSelect).toHaveBeenCalledWith(undefined);
+    expect(handleAuthSelect).toHaveBeenCalledWith(undefined, SettingScope.User);
     unmount();
   });
 });

packages/cli/src/ui/auth/AuthDialog.tsx

@@ -8,12 +8,13 @@ import type React from 'react';
 import { useState } from 'react';
 import { AuthType } from '@qwen-code/qwen-code-core';
 import { Box, Text } from 'ink';
+import { SettingScope } from '../../config/settings.js';
 import { Colors } from '../colors.js';
 import { useKeypress } from '../hooks/useKeypress.js';
 import { RadioButtonSelect } from '../components/shared/RadioButtonSelect.js';
 import { useUIState } from '../contexts/UIStateContext.js';
 import { useUIActions } from '../contexts/UIActionsContext.js';
-import { useConfig } from '../contexts/ConfigContext.js';
+import { useSettings } from '../contexts/SettingsContext.js';
 import { t } from '../../i18n/index.js';
 
 function parseDefaultAuthType(
@@ -31,7 +32,7 @@ function parseDefaultAuthType(
 export function AuthDialog(): React.JSX.Element {
   const { pendingAuthType, authError } = useUIState();
   const { handleAuthSelect: onAuthSelect } = useUIActions();
-  const config = useConfig();
+  const settings = useSettings();
 
   const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [selectedIndex, setSelectedIndex] = useState<number | null>(null);
@@ -57,10 +58,9 @@ export function AuthDialog(): React.JSX.Element {
         return item.value === pendingAuthType;
       }
 
-      // Priority 2: config.getAuthType() - the source of truth
-      const currentAuthType = config.getAuthType();
-      if (currentAuthType) {
-        return item.value === currentAuthType;
+      // Priority 2: settings.merged.security?.auth?.selectedType
+      if (settings.merged.security?.auth?.selectedType) {
+        return item.value === settings.merged.security?.auth?.selectedType;
       }
 
       // Priority 3: QWEN_DEFAULT_AUTH_TYPE env var
@@ -76,7 +76,7 @@ export function AuthDialog(): React.JSX.Element {
     }),
   );
 
-  const hasApiKey = Boolean(config.getContentGeneratorConfig()?.apiKey);
+  const hasApiKey = Boolean(settings.merged.security?.auth?.apiKey);
   const currentSelectedAuthType =
     selectedIndex !== null
       ? items[selectedIndex]?.value
@@ -84,7 +84,7 @@ export function AuthDialog(): React.JSX.Element {
 
   const handleAuthSelect = async (authMethod: AuthType) => {
     setErrorMessage(null);
-    await onAuthSelect(authMethod);
+    await onAuthSelect(authMethod, SettingScope.User);
   };
 
   const handleHighlight = (authMethod: AuthType) => {
@@ -100,7 +100,7 @@ export function AuthDialog(): React.JSX.Element {
         if (errorMessage) {
           return;
         }
-        if (config.getAuthType() === undefined) {
+        if (settings.merged.security?.auth?.selectedType === undefined) {
           // Prevent exiting if no auth method is set
           setErrorMessage(
             t(
@@ -109,7 +109,7 @@ export function AuthDialog(): React.JSX.Element {
           );
           return;
         }
-        onAuthSelect(undefined);
+        onAuthSelect(undefined, SettingScope.User);
       }
     },
     { isActive: true },

packages/cli/src/ui/auth/useAuth.ts

@@ -4,16 +4,16 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type { Config, ModelProvidersConfig } from '@qwen-code/qwen-code-core';
+import type { Config } from '@qwen-code/qwen-code-core';
 import {
   AuthEvent,
   AuthType,
+  clearCachedCredentialFile,
   getErrorMessage,
   logAuth,
 } from '@qwen-code/qwen-code-core';
 import { useCallback, useEffect, useState } from 'react';
-import type { LoadedSettings } from '../../config/settings.js';
-import { getPersistScopeForModelSelection } from '../../config/modelProvidersScope.js';
+import type { LoadedSettings, SettingScope } from '../../config/settings.js';
 import type { OpenAICredentials } from '../components/OpenAIKeyPrompt.js';
 import { useQwenAuth } from '../hooks/useQwenAuth.js';
 import { AuthState, MessageType } from '../types.js';
@@ -27,7 +27,8 @@ export const useAuthCommand = (
   config: Config,
   addItem: (item: Omit<HistoryItem, 'id'>, timestamp: number) => void,
 ) => {
-  const unAuthenticated = config.getAuthType() === undefined;
+  const unAuthenticated =
+    settings.merged.security?.auth?.selectedType === undefined;
 
   const [authState, setAuthState] = useState<AuthState>(
     unAuthenticated ? AuthState.Updating : AuthState.Unauthenticated,
@@ -80,35 +81,35 @@ export const useAuthCommand = (
   );
 
   const handleAuthSuccess = useCallback(
-    async (authType: AuthType, credentials?: OpenAICredentials) => {
+    async (
+      authType: AuthType,
+      scope: SettingScope,
+      credentials?: OpenAICredentials,
+    ) => {
       try {
-        const authTypeScope = getPersistScopeForModelSelection(settings);
-        settings.setValue(
-          authTypeScope,
-          'security.auth.selectedType',
-          authType,
-        );
+        settings.setValue(scope, 'security.auth.selectedType', authType);
 
         // Only update credentials if not switching to QWEN_OAUTH,
         // so that OpenAI credentials are preserved when switching to QWEN_OAUTH.
         if (authType !== AuthType.QWEN_OAUTH && credentials) {
           if (credentials?.apiKey != null) {
             settings.setValue(
-              authTypeScope,
+              scope,
               'security.auth.apiKey',
               credentials.apiKey,
             );
           }
           if (credentials?.baseUrl != null) {
             settings.setValue(
-              authTypeScope,
+              scope,
               'security.auth.baseUrl',
               credentials.baseUrl,
             );
           }
           if (credentials?.model != null) {
-            settings.setValue(authTypeScope, 'model.name', credentials.model);
+            settings.setValue(scope, 'model.name', credentials.model);
           }
+          await clearCachedCredentialFile();
         }
       } catch (error) {
         handleAuthFailure(error);
@@ -140,10 +141,14 @@ export const useAuthCommand = (
   );
 
   const performAuth = useCallback(
-    async (authType: AuthType, credentials?: OpenAICredentials) => {
+    async (
+      authType: AuthType,
+      scope: SettingScope,
+      credentials?: OpenAICredentials,
+    ) => {
       try {
         await config.refreshAuth(authType);
-        handleAuthSuccess(authType, credentials);
+        handleAuthSuccess(authType, scope, credentials);
       } catch (e) {
         handleAuthFailure(e);
       }
@@ -151,51 +156,18 @@ export const useAuthCommand = (
     [config, handleAuthSuccess, handleAuthFailure],
   );
 
-  const isProviderManagedModel = useCallback(
-    (authType: AuthType, modelId: string | undefined) => {
-      if (!modelId) {
-        return false;
-      }
-
-      const modelProviders = settings.merged.modelProviders as
-        | ModelProvidersConfig
-        | undefined;
-      if (!modelProviders) {
-        return false;
-      }
-      const providerModels = modelProviders[authType];
-      if (!Array.isArray(providerModels)) {
-        return false;
-      }
-      return providerModels.some(
-        (providerModel) => providerModel.id === modelId,
-      );
-    },
-    [settings],
-  );
-
   const handleAuthSelect = useCallback(
-    async (authType: AuthType | undefined, credentials?: OpenAICredentials) => {
+    async (
+      authType: AuthType | undefined,
+      scope: SettingScope,
+      credentials?: OpenAICredentials,
+    ) => {
       if (!authType) {
         setIsAuthDialogOpen(false);
         setAuthError(null);
         return;
       }
 
-      if (
-        authType === AuthType.USE_OPENAI &&
-        credentials?.model &&
-        isProviderManagedModel(authType, credentials.model)
-      ) {
-        onAuthError(
-          t(
-            'Model "{{modelName}}" is managed via settings.modelProviders. Please complete the fields in settings, or use another model id.',
-            { modelName: credentials.model },
-          ),
-        );
-        return;
-      }
-
       setPendingAuthType(authType);
       setAuthError(null);
       setIsAuthDialogOpen(false);
@@ -208,14 +180,14 @@ export const useAuthCommand = (
             baseUrl: credentials.baseUrl,
             model: credentials.model,
           });
-          await performAuth(authType, credentials);
+          await performAuth(authType, scope, credentials);
         }
         return;
       }
 
-      await performAuth(authType);
+      await performAuth(authType, scope);
     },
-    [config, performAuth, isProviderManagedModel, onAuthError],
+    [config, performAuth],
   );
 
   const openAuthDialog = useCallback(() => {

packages/cli/src/ui/commands/memoryCommand.test.ts

@@ -11,14 +11,9 @@ import type { SlashCommand, type CommandContext } from './types.js';
 import { createMockCommandContext } from '../../test-utils/mockCommandContext.js';
 import { MessageType } from '../types.js';
 import type { LoadedSettings } from '../../config/settings.js';
-import { readFile } from 'node:fs/promises';
-import os from 'node:os';
-import path from 'node:path';
 import {
   getErrorMessage,
   loadServerHierarchicalMemory,
-  QWEN_DIR,
-  setGeminiMdFilename,
   type FileDiscoveryService,
   type LoadServerHierarchicalMemoryResponse,
 } from '@qwen-code/qwen-code-core';
@@ -36,18 +31,7 @@ vi.mock('@qwen-code/qwen-code-core', async (importOriginal) => {
   };
 });
 
-vi.mock('node:fs/promises', () => {
-  const readFile = vi.fn();
-  return {
-    readFile,
-    default: {
-      readFile,
-    },
-  };
-});
-
 const mockLoadServerHierarchicalMemory = loadServerHierarchicalMemory as Mock;
-const mockReadFile = readFile as unknown as Mock;
 
 describe('memoryCommand', () => {
   let mockContext: CommandContext;
@@ -68,10 +52,6 @@ describe('memoryCommand', () => {
     let mockGetGeminiMdFileCount: Mock;
 
     beforeEach(() => {
-      setGeminiMdFilename('QWEN.md');
-      mockReadFile.mockReset();
-      vi.restoreAllMocks();
-
       showCommand = getSubCommand('show');
 
       mockGetUserMemory = vi.fn();
@@ -122,52 +102,6 @@ describe('memoryCommand', () => {
         expect.any(Number),
       );
     });
-
-    it('should show project memory from the configured context file', async () => {
-      const projectCommand = showCommand.subCommands?.find(
-        (cmd) => cmd.name === '--project',
-      );
-      if (!projectCommand?.action) throw new Error('Command has no action');
-
-      setGeminiMdFilename('AGENTS.md');
-      vi.spyOn(process, 'cwd').mockReturnValue('/test/project');
-      mockReadFile.mockResolvedValue('project memory');
-
-      await projectCommand.action(mockContext, '');
-
-      const expectedProjectPath = path.join('/test/project', 'AGENTS.md');
-      expect(mockReadFile).toHaveBeenCalledWith(expectedProjectPath, 'utf-8');
-      expect(mockContext.ui.addItem).toHaveBeenCalledWith(
-        {
-          type: MessageType.INFO,
-          text: expect.stringContaining(expectedProjectPath),
-        },
-        expect.any(Number),
-      );
-    });
-
-    it('should show global memory from the configured context file', async () => {
-      const globalCommand = showCommand.subCommands?.find(
-        (cmd) => cmd.name === '--global',
-      );
-      if (!globalCommand?.action) throw new Error('Command has no action');
-
-      setGeminiMdFilename('AGENTS.md');
-      vi.spyOn(os, 'homedir').mockReturnValue('/home/user');
-      mockReadFile.mockResolvedValue('global memory');
-
-      await globalCommand.action(mockContext, '');
-
-      const expectedGlobalPath = path.join('/home/user', QWEN_DIR, 'AGENTS.md');
-      expect(mockReadFile).toHaveBeenCalledWith(expectedGlobalPath, 'utf-8');
-      expect(mockContext.ui.addItem).toHaveBeenCalledWith(
-        {
-          type: MessageType.INFO,
-          text: expect.stringContaining('Global memory content'),
-        },
-        expect.any(Number),
-      );
-    });
   });
 
   describe('/memory add', () => {

packages/cli/src/ui/commands/memoryCommand.ts

@@ -6,13 +6,12 @@
 
 import {
   getErrorMessage,
-  getCurrentGeminiMdFilename,
   loadServerHierarchicalMemory,
   QWEN_DIR,
 } from '@qwen-code/qwen-code-core';
 import path from 'node:path';
-import os from 'node:os';
-import fs from 'node:fs/promises';
+import os from 'os';
+import fs from 'fs/promises';
 import { MessageType } from '../types.js';
 import type { SlashCommand, SlashCommandActionReturn } from './types.js';
 import { CommandKind } from './types.js';
@@ -57,12 +56,7 @@ export const memoryCommand: SlashCommand = {
           kind: CommandKind.BUILT_IN,
           action: async (context) => {
             try {
-              const workingDir =
-                context.services.config?.getWorkingDir?.() ?? process.cwd();
-              const projectMemoryPath = path.join(
-                workingDir,
-                getCurrentGeminiMdFilename(),
-              );
+              const projectMemoryPath = path.join(process.cwd(), 'QWEN.md');
               const memoryContent = await fs.readFile(
                 projectMemoryPath,
                 'utf-8',
@@ -110,7 +104,7 @@ export const memoryCommand: SlashCommand = {
               const globalMemoryPath = path.join(
                 os.homedir(),
                 QWEN_DIR,
-                getCurrentGeminiMdFilename(),
+                'QWEN.md',
               );
               const globalMemoryContent = await fs.readFile(
                 globalMemoryPath,

packages/cli/src/ui/commands/modelCommand.test.ts

@@ -13,6 +13,12 @@ import {
   type ContentGeneratorConfig,
   type Config,
 } from '@qwen-code/qwen-code-core';
+import * as availableModelsModule from '../models/availableModels.js';
+
+// Mock the availableModels module
+vi.mock('../models/availableModels.js', () => ({
+  getAvailableModelsForAuthType: vi.fn(),
+}));
 
 // Helper function to create a mock config
 function createMockConfig(
@@ -25,6 +31,9 @@ function createMockConfig(
 
 describe('modelCommand', () => {
   let mockContext: CommandContext;
+  const mockGetAvailableModelsForAuthType = vi.mocked(
+    availableModelsModule.getAvailableModelsForAuthType,
+  );
 
   beforeEach(() => {
     mockContext = createMockCommandContext();
@@ -78,6 +87,10 @@ describe('modelCommand', () => {
   });
 
   it('should return dialog action for QWEN_OAUTH auth type', async () => {
+    mockGetAvailableModelsForAuthType.mockReturnValue([
+      { id: 'qwen3-coder-plus', label: 'qwen3-coder-plus' },
+    ]);
+
     const mockConfig = createMockConfig({
       model: 'test-model',
       authType: AuthType.QWEN_OAUTH,
@@ -92,7 +105,11 @@ describe('modelCommand', () => {
     });
   });
 
-  it('should return dialog action for USE_OPENAI auth type', async () => {
+  it('should return dialog action for USE_OPENAI auth type when model is available', async () => {
+    mockGetAvailableModelsForAuthType.mockReturnValue([
+      { id: 'gpt-4', label: 'gpt-4' },
+    ]);
+
     const mockConfig = createMockConfig({
       model: 'test-model',
       authType: AuthType.USE_OPENAI,
@@ -107,7 +124,28 @@ describe('modelCommand', () => {
     });
   });
 
-  it('should return dialog action for unsupported auth types', async () => {
+  it('should return error for USE_OPENAI auth type when no model is available', async () => {
+    mockGetAvailableModelsForAuthType.mockReturnValue([]);
+
+    const mockConfig = createMockConfig({
+      model: 'test-model',
+      authType: AuthType.USE_OPENAI,
+    });
+    mockContext.services.config = mockConfig as Config;
+
+    const result = await modelCommand.action!(mockContext, '');
+
+    expect(result).toEqual({
+      type: 'message',
+      messageType: 'error',
+      content:
+        'No models available for the current authentication type (openai).',
+    });
+  });
+
+  it('should return error for unsupported auth types', async () => {
+    mockGetAvailableModelsForAuthType.mockReturnValue([]);
+
     const mockConfig = createMockConfig({
       model: 'test-model',
       authType: 'UNSUPPORTED_AUTH_TYPE' as AuthType,
@@ -117,8 +155,10 @@ describe('modelCommand', () => {
     const result = await modelCommand.action!(mockContext, '');
 
     expect(result).toEqual({
-      type: 'dialog',
-      dialog: 'model',
+      type: 'message',
+      messageType: 'error',
+      content:
+        'No models available for the current authentication type (UNSUPPORTED_AUTH_TYPE).',
     });
   });
 

packages/cli/src/ui/commands/modelCommand.ts

@@ -11,6 +11,7 @@ import type {
   MessageActionReturn,
 } from './types.js';
 import { CommandKind } from './types.js';
+import { getAvailableModelsForAuthType } from '../models/availableModels.js';
 import { t } from '../../i18n/index.js';
 
 export const modelCommand: SlashCommand = {
@@ -29,7 +30,7 @@ export const modelCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: t('Configuration not available.'),
+        content: 'Configuration not available.',
       };
     }
 
@@ -51,6 +52,22 @@ export const modelCommand: SlashCommand = {
       };
     }
 
+    const availableModels = getAvailableModelsForAuthType(authType);
+
+    if (availableModels.length === 0) {
+      return {
+        type: 'message',
+        messageType: 'error',
+        content: t(
+          'No models available for the current authentication type ({{authType}}).',
+          {
+            authType,
+          },
+        ),
+      };
+    }
+
+    // Trigger model selection dialog
     return {
       type: 'dialog',
       dialog: 'model',

packages/cli/src/ui/components/ApprovalModeDialog.tsx

@@ -54,7 +54,7 @@ export function ApprovalModeDialog({
 }: ApprovalModeDialogProps): React.JSX.Element {
   // Start with User scope by default
   const [selectedScope, setSelectedScope] = useState<SettingScope>(
-    SettingScope.Workspace,
+    SettingScope.User,
   );
 
   // Track the currently highlighted approval mode

packages/cli/src/ui/components/DialogManager.tsx

@@ -25,6 +25,7 @@ import { useUIState } from '../contexts/UIStateContext.js';
 import { useUIActions } from '../contexts/UIActionsContext.js';
 import { useConfig } from '../contexts/ConfigContext.js';
 import { useSettings } from '../contexts/SettingsContext.js';
+import { SettingScope } from '../../config/settings.js';
 import { AuthState } from '../types.js';
 import { AuthType } from '@qwen-code/qwen-code-core';
 import process from 'node:process';
@@ -201,7 +202,7 @@ export const DialogManager = ({
       return (
         <OpenAIKeyPrompt
           onSubmit={(apiKey, baseUrl, model) => {
-            uiActions.handleAuthSelect(AuthType.USE_OPENAI, {
+            uiActions.handleAuthSelect(AuthType.USE_OPENAI, SettingScope.User, {
               apiKey,
               baseUrl,
               model,

packages/cli/src/ui/components/ModelDialog.test.tsx

@@ -10,11 +10,7 @@ import { ModelDialog } from './ModelDialog.js';
 import { useKeypress } from '../hooks/useKeypress.js';
 import { DescriptiveRadioButtonSelect } from './shared/DescriptiveRadioButtonSelect.js';
 import { ConfigContext } from '../contexts/ConfigContext.js';
-import { SettingsContext } from '../contexts/SettingsContext.js';
 import type { Config } from '@qwen-code/qwen-code-core';
-import { AuthType } from '@qwen-code/qwen-code-core';
-import type { LoadedSettings } from '../../config/settings.js';
-import { SettingScope } from '../../config/settings.js';
 import {
   AVAILABLE_MODELS_QWEN,
   MAINLINE_CODER,
@@ -40,29 +36,18 @@ const renderComponent = (
   };
   const combinedProps = { ...defaultProps, ...props };
 
-  const mockSettings = {
-    isTrusted: true,
-    user: { settings: {} },
-    workspace: { settings: {} },
-    setValue: vi.fn(),
-  } as unknown as LoadedSettings;
-
   const mockConfig = contextValue
     ? ({
         // --- Functions used by ModelDialog ---
         getModel: vi.fn(() => MAINLINE_CODER),
-        setModel: vi.fn().mockResolvedValue(undefined),
-        switchModel: vi.fn().mockResolvedValue(undefined),
+        setModel: vi.fn(),
         getAuthType: vi.fn(() => 'qwen-oauth'),
 
         // --- Functions used by ClearcutLogger ---
         getUsageStatisticsEnabled: vi.fn(() => true),
         getSessionId: vi.fn(() => 'mock-session-id'),
         getDebugMode: vi.fn(() => false),
-        getContentGeneratorConfig: vi.fn(() => ({
-          authType: AuthType.QWEN_OAUTH,
-          model: MAINLINE_CODER,
-        })),
+        getContentGeneratorConfig: vi.fn(() => ({ authType: 'mock' })),
         getUseSmartEdit: vi.fn(() => false),
         getUseModelRouter: vi.fn(() => false),
         getProxy: vi.fn(() => undefined),
@@ -73,27 +58,21 @@ const renderComponent = (
     : undefined;
 
   const renderResult = render(
-    <SettingsContext.Provider value={mockSettings}>
-      <ConfigContext.Provider value={mockConfig}>
-        <ModelDialog {...combinedProps} />
-      </ConfigContext.Provider>
-    </SettingsContext.Provider>,
+    <ConfigContext.Provider value={mockConfig}>
+      <ModelDialog {...combinedProps} />
+    </ConfigContext.Provider>,
   );
 
   return {
     ...renderResult,
     props: combinedProps,
     mockConfig,
-    mockSettings,
   };
 };
 
 describe('<ModelDialog />', () => {
   beforeEach(() => {
     vi.clearAllMocks();
-    // Ensure env-based fallback models don't leak into this suite from the developer environment.
-    delete process.env['OPENAI_MODEL'];
-    delete process.env['ANTHROPIC_MODEL'];
   });
 
   afterEach(() => {
@@ -112,12 +91,8 @@ describe('<ModelDialog />', () => {
 
     const props = mockedSelect.mock.calls[0][0];
     expect(props.items).toHaveLength(AVAILABLE_MODELS_QWEN.length);
-    expect(props.items[0].value).toBe(
-      `${AuthType.QWEN_OAUTH}::${MAINLINE_CODER}`,
-    );
-    expect(props.items[1].value).toBe(
-      `${AuthType.QWEN_OAUTH}::${MAINLINE_VLM}`,
-    );
+    expect(props.items[0].value).toBe(MAINLINE_CODER);
+    expect(props.items[1].value).toBe(MAINLINE_VLM);
     expect(props.showNumbers).toBe(true);
   });
 
@@ -164,93 +139,16 @@ describe('<ModelDialog />', () => {
     expect(mockedSelect).toHaveBeenCalledTimes(1);
   });
 
-  it('calls config.switchModel and onClose when DescriptiveRadioButtonSelect.onSelect is triggered', async () => {
-    const { props, mockConfig, mockSettings } = renderComponent({}, {}); // Pass empty object for contextValue
+  it('calls config.setModel and onClose when DescriptiveRadioButtonSelect.onSelect is triggered', () => {
+    const { props, mockConfig } = renderComponent({}, {}); // Pass empty object for contextValue
 
     const childOnSelect = mockedSelect.mock.calls[0][0].onSelect;
     expect(childOnSelect).toBeDefined();
 
-    await childOnSelect(`${AuthType.QWEN_OAUTH}::${MAINLINE_CODER}`);
+    childOnSelect(MAINLINE_CODER);
 
-    expect(mockConfig?.switchModel).toHaveBeenCalledWith(
-      AuthType.QWEN_OAUTH,
-      MAINLINE_CODER,
-      undefined,
-      {
-        reason: 'user_manual',
-        context: 'Model switched via /model dialog',
-      },
-    );
-    expect(mockSettings.setValue).toHaveBeenCalledWith(
-      SettingScope.User,
-      'model.name',
-      MAINLINE_CODER,
-    );
-    expect(mockSettings.setValue).toHaveBeenCalledWith(
-      SettingScope.User,
-      'security.auth.selectedType',
-      AuthType.QWEN_OAUTH,
-    );
-    expect(props.onClose).toHaveBeenCalledTimes(1);
-  });
-
-  it('calls config.switchModel and persists authType+model when selecting a different authType', async () => {
-    const switchModel = vi.fn().mockResolvedValue(undefined);
-    const getAuthType = vi.fn(() => AuthType.USE_OPENAI);
-    const getAvailableModelsForAuthType = vi.fn((t: AuthType) => {
-      if (t === AuthType.USE_OPENAI) {
-        return [{ id: 'gpt-4', label: 'GPT-4', authType: t }];
-      }
-      if (t === AuthType.QWEN_OAUTH) {
-        return AVAILABLE_MODELS_QWEN.map((m) => ({
-          id: m.id,
-          label: m.label,
-          authType: AuthType.QWEN_OAUTH,
-        }));
-      }
-      return [];
-    });
-
-    const mockConfigWithSwitchAuthType = {
-      getAuthType,
-      getModel: vi.fn(() => 'gpt-4'),
-      getContentGeneratorConfig: vi.fn(() => ({
-        authType: AuthType.QWEN_OAUTH,
-        model: MAINLINE_CODER,
-      })),
-      // Add switchModel to the mock object (not the type)
-      switchModel,
-      getAvailableModelsForAuthType,
-    };
-
-    const { props, mockSettings } = renderComponent(
-      {},
-      // Cast to Config to bypass type checking, matching the runtime behavior
-      mockConfigWithSwitchAuthType as unknown as Partial<Config>,
-    );
-
-    const childOnSelect = mockedSelect.mock.calls[0][0].onSelect;
-    await childOnSelect(`${AuthType.QWEN_OAUTH}::${MAINLINE_CODER}`);
-
-    expect(switchModel).toHaveBeenCalledWith(
-      AuthType.QWEN_OAUTH,
-      MAINLINE_CODER,
-      { requireCachedCredentials: true },
-      {
-        reason: 'user_manual',
-        context: 'AuthType+model switched via /model dialog',
-      },
-    );
-    expect(mockSettings.setValue).toHaveBeenCalledWith(
-      SettingScope.User,
-      'model.name',
-      MAINLINE_CODER,
-    );
-    expect(mockSettings.setValue).toHaveBeenCalledWith(
-      SettingScope.User,
-      'security.auth.selectedType',
-      AuthType.QWEN_OAUTH,
-    );
+    // Assert against the default mock provided by renderComponent
+    expect(mockConfig?.setModel).toHaveBeenCalledWith(MAINLINE_CODER);
     expect(props.onClose).toHaveBeenCalledTimes(1);
   });
 
@@ -295,25 +193,17 @@ describe('<ModelDialog />', () => {
   it('updates initialIndex when config context changes', () => {
     const mockGetModel = vi.fn(() => MAINLINE_CODER);
     const mockGetAuthType = vi.fn(() => 'qwen-oauth');
-    const mockSettings = {
-      isTrusted: true,
-      user: { settings: {} },
-      workspace: { settings: {} },
-      setValue: vi.fn(),
-    } as unknown as LoadedSettings;
     const { rerender } = render(
-      <SettingsContext.Provider value={mockSettings}>
-        <ConfigContext.Provider
-          value={
-            {
-              getModel: mockGetModel,
-              getAuthType: mockGetAuthType,
-            } as unknown as Config
-          }
-        >
-          <ModelDialog onClose={vi.fn()} />
-        </ConfigContext.Provider>
-      </SettingsContext.Provider>,
+      <ConfigContext.Provider
+        value={
+          {
+            getModel: mockGetModel,
+            getAuthType: mockGetAuthType,
+          } as unknown as Config
+        }
+      >
+        <ModelDialog onClose={vi.fn()} />
+      </ConfigContext.Provider>,
     );
 
     expect(mockedSelect.mock.calls[0][0].initialIndex).toBe(0);
@@ -325,11 +215,9 @@ describe('<ModelDialog />', () => {
     } as unknown as Config;
 
     rerender(
-      <SettingsContext.Provider value={mockSettings}>
-        <ConfigContext.Provider value={newMockConfig}>
-          <ModelDialog onClose={vi.fn()} />
-        </ConfigContext.Provider>
-      </SettingsContext.Provider>,
+      <ConfigContext.Provider value={newMockConfig}>
+        <ModelDialog onClose={vi.fn()} />
+      </ConfigContext.Provider>,
     );
 
     // Should be called at least twice: initial render + re-render after context change

packages/cli/src/ui/components/ModelDialog.tsx

@@ -5,210 +5,52 @@
  */
 
 import type React from 'react';
-import { useCallback, useContext, useMemo, useState } from 'react';
+import { useCallback, useContext, useMemo } from 'react';
 import { Box, Text } from 'ink';
 import {
   AuthType,
   ModelSlashCommandEvent,
   logModelSlashCommand,
-  type ContentGeneratorConfig,
-  type ContentGeneratorConfigSource,
-  type ContentGeneratorConfigSources,
 } from '@qwen-code/qwen-code-core';
 import { useKeypress } from '../hooks/useKeypress.js';
 import { theme } from '../semantic-colors.js';
 import { DescriptiveRadioButtonSelect } from './shared/DescriptiveRadioButtonSelect.js';
 import { ConfigContext } from '../contexts/ConfigContext.js';
-import { UIStateContext } from '../contexts/UIStateContext.js';
-import { useSettings } from '../contexts/SettingsContext.js';
 import {
   getAvailableModelsForAuthType,
   MAINLINE_CODER,
 } from '../models/availableModels.js';
-import { getPersistScopeForModelSelection } from '../../config/modelProvidersScope.js';
 import { t } from '../../i18n/index.js';
 
 interface ModelDialogProps {
   onClose: () => void;
 }
 
-function formatSourceBadge(
-  source: ContentGeneratorConfigSource | undefined,
-): string | undefined {
-  if (!source) return undefined;
-
-  switch (source.kind) {
-    case 'cli':
-      return source.detail ? `CLI ${source.detail}` : 'CLI';
-    case 'env':
-      return source.envKey ? `ENV ${source.envKey}` : 'ENV';
-    case 'settings':
-      return source.settingsPath
-        ? `Settings ${source.settingsPath}`
-        : 'Settings';
-    case 'modelProviders': {
-      const suffix =
-        source.authType && source.modelId
-          ? `${source.authType}:${source.modelId}`
-          : source.authType
-            ? `${source.authType}`
-            : source.modelId
-              ? `${source.modelId}`
-              : '';
-      return suffix ? `ModelProviders ${suffix}` : 'ModelProviders';
-    }
-    case 'default':
-      return source.detail ? `Default ${source.detail}` : 'Default';
-    case 'computed':
-      return source.detail ? `Computed ${source.detail}` : 'Computed';
-    case 'programmatic':
-      return source.detail ? `Programmatic ${source.detail}` : 'Programmatic';
-    case 'unknown':
-    default:
-      return undefined;
-  }
-}
-
-function readSourcesFromConfig(config: unknown): ContentGeneratorConfigSources {
-  if (!config) {
-    return {};
-  }
-  const maybe = config as {
-    getContentGeneratorConfigSources?: () => ContentGeneratorConfigSources;
-  };
-  return maybe.getContentGeneratorConfigSources?.() ?? {};
-}
-
-function maskApiKey(apiKey: string | undefined): string {
-  if (!apiKey) return '(not set)';
-  const trimmed = apiKey.trim();
-  if (trimmed.length === 0) return '(not set)';
-  if (trimmed.length <= 6) return '***';
-  const head = trimmed.slice(0, 3);
-  const tail = trimmed.slice(-4);
-  return `${head}…${tail}`;
-}
-
-function persistModelSelection(
-  settings: ReturnType<typeof useSettings>,
-  modelId: string,
-): void {
-  const scope = getPersistScopeForModelSelection(settings);
-  settings.setValue(scope, 'model.name', modelId);
-}
-
-function persistAuthTypeSelection(
-  settings: ReturnType<typeof useSettings>,
-  authType: AuthType,
-): void {
-  const scope = getPersistScopeForModelSelection(settings);
-  settings.setValue(scope, 'security.auth.selectedType', authType);
-}
-
-function ConfigRow({
-  label,
-  value,
-  badge,
-}: {
-  label: string;
-  value: React.ReactNode;
-  badge?: string;
-}): React.JSX.Element {
-  return (
-    <Box flexDirection="column">
-      <Box>
-        <Box minWidth={12} flexShrink={0}>
-          <Text color={theme.text.secondary}>{label}:</Text>
-        </Box>
-        <Box flexGrow={1} flexDirection="row" flexWrap="wrap">
-          <Text>{value}</Text>
-        </Box>
-      </Box>
-      {badge ? (
-        <Box>
-          <Box minWidth={12} flexShrink={0}>
-            <Text> </Text>
-          </Box>
-          <Box flexGrow={1}>
-            <Text color={theme.text.secondary}>{badge}</Text>
-          </Box>
-        </Box>
-      ) : null}
-    </Box>
-  );
-}
-
 export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
   const config = useContext(ConfigContext);
-  const uiState = useContext(UIStateContext);
-  const settings = useSettings();
 
-  // Local error state for displaying errors within the dialog
-  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  // Get auth type from config, default to QWEN_OAUTH if not available
+  const authType = config?.getAuthType() ?? AuthType.QWEN_OAUTH;
 
-  const authType = config?.getAuthType();
-  const effectiveConfig =
-    (config?.getContentGeneratorConfig?.() as
-      | ContentGeneratorConfig
-      | undefined) ?? undefined;
-  const sources = readSourcesFromConfig(config);
-
-  const availableModelEntries = useMemo(() => {
-    const allAuthTypes = Object.values(AuthType) as AuthType[];
-    const modelsByAuthType = allAuthTypes
-      .map((t) => ({
-        authType: t,
-        models: getAvailableModelsForAuthType(t, config ?? undefined),
-      }))
-      .filter((x) => x.models.length > 0);
-
-    // Fixed order: qwen-oauth first, then others in a stable order
-    const authTypeOrder: AuthType[] = [
-      AuthType.QWEN_OAUTH,
-      AuthType.USE_OPENAI,
-      AuthType.USE_ANTHROPIC,
-      AuthType.USE_GEMINI,
-      AuthType.USE_VERTEX_AI,
-    ];
-
-    // Filter to only include authTypes that have models
-    const availableAuthTypes = new Set(modelsByAuthType.map((x) => x.authType));
-    const orderedAuthTypes = authTypeOrder.filter((t) =>
-      availableAuthTypes.has(t),
-    );
-
-    return orderedAuthTypes.flatMap((t) => {
-      const models =
-        modelsByAuthType.find((x) => x.authType === t)?.models ?? [];
-      return models.map((m) => ({ authType: t, model: m }));
-    });
-  }, [config]);
+  // Get available models based on auth type
+  const availableModels = useMemo(
+    () => getAvailableModelsForAuthType(authType),
+    [authType],
+  );
 
   const MODEL_OPTIONS = useMemo(
     () =>
-      availableModelEntries.map(({ authType: t2, model }) => {
-        const value = `${t2}::${model.id}`;
-        const title = (
-          <Text>
-            <Text bold color={theme.text.accent}>
-              [{t2}]
-            </Text>
-            <Text>{` ${model.label}`}</Text>
-          </Text>
-        );
-        const description = model.description || '';
-        return {
-          value,
-          title,
-          description,
-          key: value,
-        };
-      }),
-    [availableModelEntries],
+      availableModels.map((model) => ({
+        value: model.id,
+        title: model.label,
+        description: model.description || '',
+        key: model.id,
+      })),
+    [availableModels],
   );
 
-  const preferredModelId = config?.getModel() || MAINLINE_CODER;
-  const preferredKey = authType ? `${authType}::${preferredModelId}` : '';
+  // Determine the Preferred Model (read once when the dialog opens).
+  const preferredModel = config?.getModel() || MAINLINE_CODER;
 
   useKeypress(
     (key) => {
@@ -219,83 +61,25 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
     { isActive: true },
   );
 
-  const initialIndex = useMemo(() => {
-    const index = MODEL_OPTIONS.findIndex(
-      (option) => option.value === preferredKey,
-    );
-    return index === -1 ? 0 : index;
-  }, [MODEL_OPTIONS, preferredKey]);
+  // Calculate the initial index based on the preferred model.
+  const initialIndex = useMemo(
+    () => MODEL_OPTIONS.findIndex((option) => option.value === preferredModel),
+    [MODEL_OPTIONS, preferredModel],
+  );
 
+  // Handle selection internally (Autonomous Dialog).
   const handleSelect = useCallback(
-    async (selected: string) => {
-      // Clear any previous error
-      setErrorMessage(null);
-
-      const sep = '::';
-      const idx = selected.indexOf(sep);
-      const selectedAuthType = (
-        idx >= 0 ? selected.slice(0, idx) : authType
-      ) as AuthType;
-      const modelId = idx >= 0 ? selected.slice(idx + sep.length) : selected;
-
+    (model: string) => {
       if (config) {
-        try {
-          await config.switchModel(
-            selectedAuthType,
-            modelId,
-            selectedAuthType !== authType &&
-              selectedAuthType === AuthType.QWEN_OAUTH
-              ? { requireCachedCredentials: true }
-              : undefined,
-            {
-              reason: 'user_manual',
-              context:
-                selectedAuthType === authType
-                  ? 'Model switched via /model dialog'
-                  : 'AuthType+model switched via /model dialog',
-            },
-          );
-        } catch (e) {
-          const baseErrorMessage = e instanceof Error ? e.message : String(e);
-          setErrorMessage(
-            `Failed to switch model to '${modelId}'.\n\n${baseErrorMessage}`,
-          );
-          return;
-        }
-        const event = new ModelSlashCommandEvent(modelId);
+        config.setModel(model);
+        const event = new ModelSlashCommandEvent(model);
         logModelSlashCommand(config, event);
-
-        const after = config.getContentGeneratorConfig?.() as
-          | ContentGeneratorConfig
-          | undefined;
-        const effectiveAuthType =
-          after?.authType ?? selectedAuthType ?? authType;
-        const effectiveModelId = after?.model ?? modelId;
-
-        persistModelSelection(settings, effectiveModelId);
-        persistAuthTypeSelection(settings, effectiveAuthType);
-
-        const baseUrl = after?.baseUrl ?? '(default)';
-        const maskedKey = maskApiKey(after?.apiKey);
-        uiState?.historyManager.addItem(
-          {
-            type: 'info',
-            text:
-              `authType: ${effectiveAuthType}\n` +
-              `Using model: ${effectiveModelId}\n` +
-              `Base URL: ${baseUrl}\n` +
-              `API key: ${maskedKey}`,
-          },
-          Date.now(),
-        );
       }
       onClose();
     },
-    [authType, config, onClose, settings, uiState, setErrorMessage],
+    [config, onClose],
   );
 
-  const hasModels = MODEL_OPTIONS.length > 0;
-
   return (
     <Box
       borderStyle="round"
@@ -305,73 +89,14 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
       width="100%"
     >
       <Text bold>{t('Select Model')}</Text>
-
-      <Box marginTop={1} flexDirection="column">
-        <Text color={theme.text.secondary}>
-          {t('Current (effective) configuration')}
-        </Text>
-        <Box flexDirection="column" marginTop={1}>
-          <ConfigRow label="AuthType" value={authType} />
-          <ConfigRow
-            label="Model"
-            value={effectiveConfig?.model ?? config?.getModel?.() ?? ''}
-            badge={formatSourceBadge(sources['model'])}
-          />
-
-          {authType !== AuthType.QWEN_OAUTH && (
-            <>
-              <ConfigRow
-                label="Base URL"
-                value={effectiveConfig?.baseUrl ?? ''}
-                badge={formatSourceBadge(sources['baseUrl'])}
-              />
-              <ConfigRow
-                label="API Key"
-                value={effectiveConfig?.apiKey ? t('(set)') : t('(not set)')}
-                badge={formatSourceBadge(sources['apiKey'])}
-              />
-            </>
-          )}
-        </Box>
+      <Box marginTop={1}>
+        <DescriptiveRadioButtonSelect
+          items={MODEL_OPTIONS}
+          onSelect={handleSelect}
+          initialIndex={initialIndex}
+          showNumbers={true}
+        />
       </Box>
-
-      {!hasModels ? (
-        <Box marginTop={1} flexDirection="column">
-          <Text color={theme.status.warning}>
-            {t(
-              'No models available for the current authentication type ({{authType}}).',
-              {
-                authType: authType ? String(authType) : t('(none)'),
-              },
-            )}
-          </Text>
-          <Box marginTop={1}>
-            <Text color={theme.text.secondary}>
-              {t(
-                'Please configure models in settings.modelProviders or use environment variables.',
-              )}
-            </Text>
-          </Box>
-        </Box>
-      ) : (
-        <Box marginTop={1}>
-          <DescriptiveRadioButtonSelect
-            items={MODEL_OPTIONS}
-            onSelect={handleSelect}
-            initialIndex={initialIndex}
-            showNumbers={true}
-          />
-        </Box>
-      )}
-
-      {errorMessage && (
-        <Box marginTop={1} flexDirection="column" paddingX={1}>
-          <Text color={theme.status.error} wrap="wrap">
-            ✕ {errorMessage}
-          </Text>
-        </Box>
-      )}
-
       <Box marginTop={1} flexDirection="column">
         <Text color={theme.text.secondary}>{t('(Press Esc to close)')}</Text>
       </Box>

packages/cli/src/ui/components/shared/DescriptiveRadioButtonSelect.tsx

@@ -11,7 +11,7 @@ import { BaseSelectionList } from './BaseSelectionList.js';
 import type { SelectionListItem } from '../../hooks/useSelectionList.js';
 
 export interface DescriptiveRadioSelectItem<T> extends SelectionListItem<T> {
-  title: React.ReactNode;
+  title: string;
   description: string;
 }
 

packages/cli/src/ui/contexts/UIActionsContext.tsx

@@ -30,6 +30,7 @@ export interface UIActions {
   ) => void;
   handleAuthSelect: (
     authType: AuthType | undefined,
+    scope: SettingScope,
     credentials?: OpenAICredentials,
   ) => Promise<void>;
   setAuthState: (state: AuthState) => void;

packages/cli/src/ui/hooks/useDialogClose.ts

@@ -25,6 +25,7 @@ export interface DialogCloseOptions {
   isAuthDialogOpen: boolean;
   handleAuthSelect: (
     authType: AuthType | undefined,
+    scope: SettingScope,
     credentials?: OpenAICredentials,
   ) => Promise<void>;
   pendingAuthType: AuthType | undefined;

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -912,7 +912,7 @@ export const useGeminiStream = (
       // Reset quota error flag when starting a new query (not a continuation)
       if (!options?.isContinuation) {
         setModelSwitchedFromQuotaError(false);
-        // No quota-error / fallback routing mechanism currently; keep state minimal.
+        config.setQuotaErrorOccurred(false);
       }
 
       abortControllerRef.current = new AbortController();

packages/cli/src/ui/hooks/useLaunchEditor.ts

@@ -1,58 +1,21 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { useCallback } from 'react';
 import { useStdin } from 'ink';
 import type { EditorType } from '@qwen-code/qwen-code-core';
-import {
-  editorCommands,
-  commandExists as coreCommandExists,
-} from '@qwen-code/qwen-code-core';
 import { spawnSync } from 'child_process';
 import { useSettings } from '../contexts/SettingsContext.js';
 
-/**
- * Cache for command existence checks to avoid repeated execSync calls.
- */
-const commandExistsCache = new Map<string, boolean>();
-
-/**
- * Check if a command exists in the system with caching.
- * Results are cached to improve performance in test environments.
- */
-function commandExists(cmd: string): boolean {
-  if (commandExistsCache.has(cmd)) {
-    return commandExistsCache.get(cmd)!;
-  }
-
-  const exists = coreCommandExists(cmd);
-  commandExistsCache.set(cmd, exists);
-  return exists;
-}
-/**
- * Get the actual executable command for an editor type.
- */
-function getExecutableCommand(editorType: EditorType): string {
-  const commandConfig = editorCommands[editorType];
-  const commands =
-    process.platform === 'win32' ? commandConfig.win32 : commandConfig.default;
-
-  const availableCommand = commands.find((cmd) => commandExists(cmd));
-
-  if (!availableCommand) {
-    throw new Error(
-      `No available editor command found for ${editorType}. ` +
-        `Tried: ${commands.join(', ')}. ` +
-        `Please install one of these editors or set a different preferredEditor in settings.`,
-    );
-  }
-
-  return availableCommand;
-}
-
 /**
  * Determines the editor command to use based on user preferences and platform.
  */
 function getEditorCommand(preferredEditor?: EditorType): string {
   if (preferredEditor) {
-    return getExecutableCommand(preferredEditor);
+    return preferredEditor;
   }
 
   // Platform-specific defaults with UI preference for macOS
@@ -100,14 +63,8 @@ export function useLaunchEditor() {
       try {
         setRawMode?.(false);
 
-        // On Windows, .cmd and .bat files need shell: true
-        const needsShell =
-          process.platform === 'win32' &&
-          (editorCommand.endsWith('.cmd') || editorCommand.endsWith('.bat'));
-
         const { status, error } = spawnSync(editorCommand, editorArgs, {
           stdio: 'inherit',
-          shell: needsShell,
         });
 
         if (error) throw error;

packages/cli/src/ui/hooks/useToolScheduler.test.ts

@@ -62,7 +62,7 @@ const mockConfig = {
   getAllowedTools: vi.fn(() => []),
   getContentGeneratorConfig: () => ({
     model: 'test-model',
-    authType: 'gemini',
+    authType: 'gemini-api-key',
   }),
   getUseSmartEdit: () => false,
   getUseModelRouter: () => false,

packages/cli/src/ui/models/availableModels.test.ts

@@ -1,205 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
-import {
-  getAvailableModelsForAuthType,
-  getFilteredQwenModels,
-  getOpenAIAvailableModelFromEnv,
-  isVisionModel,
-  getDefaultVisionModel,
-  AVAILABLE_MODELS_QWEN,
-  MAINLINE_VLM,
-  MAINLINE_CODER,
-} from './availableModels.js';
-import { AuthType, type Config } from '@qwen-code/qwen-code-core';
-
-describe('availableModels', () => {
-  describe('AVAILABLE_MODELS_QWEN', () => {
-    it('should include coder model', () => {
-      const coderModel = AVAILABLE_MODELS_QWEN.find(
-        (m) => m.id === MAINLINE_CODER,
-      );
-      expect(coderModel).toBeDefined();
-      expect(coderModel?.isVision).toBeFalsy();
-    });
-
-    it('should include vision model', () => {
-      const visionModel = AVAILABLE_MODELS_QWEN.find(
-        (m) => m.id === MAINLINE_VLM,
-      );
-      expect(visionModel).toBeDefined();
-      expect(visionModel?.isVision).toBe(true);
-    });
-  });
-
-  describe('getFilteredQwenModels', () => {
-    it('should return all models when vision preview is enabled', () => {
-      const models = getFilteredQwenModels(true);
-      expect(models.length).toBe(AVAILABLE_MODELS_QWEN.length);
-    });
-
-    it('should filter out vision models when preview is disabled', () => {
-      const models = getFilteredQwenModels(false);
-      expect(models.every((m) => !m.isVision)).toBe(true);
-    });
-  });
-
-  describe('getOpenAIAvailableModelFromEnv', () => {
-    const originalEnv = process.env;
-
-    beforeEach(() => {
-      process.env = { ...originalEnv };
-    });
-
-    afterEach(() => {
-      process.env = originalEnv;
-    });
-
-    it('should return null when OPENAI_MODEL is not set', () => {
-      delete process.env['OPENAI_MODEL'];
-      expect(getOpenAIAvailableModelFromEnv()).toBeNull();
-    });
-
-    it('should return model from OPENAI_MODEL env var', () => {
-      process.env['OPENAI_MODEL'] = 'gpt-4-turbo';
-      const model = getOpenAIAvailableModelFromEnv();
-      expect(model?.id).toBe('gpt-4-turbo');
-      expect(model?.label).toBe('gpt-4-turbo');
-    });
-
-    it('should trim whitespace from env var', () => {
-      process.env['OPENAI_MODEL'] = '  gpt-4  ';
-      const model = getOpenAIAvailableModelFromEnv();
-      expect(model?.id).toBe('gpt-4');
-    });
-  });
-
-  describe('getAvailableModelsForAuthType', () => {
-    const originalEnv = process.env;
-
-    beforeEach(() => {
-      process.env = { ...originalEnv };
-    });
-
-    afterEach(() => {
-      process.env = originalEnv;
-    });
-
-    it('should return hard-coded qwen models for qwen-oauth', () => {
-      const models = getAvailableModelsForAuthType(AuthType.QWEN_OAUTH);
-      expect(models).toEqual(AVAILABLE_MODELS_QWEN);
-    });
-
-    it('should return hard-coded qwen models even when config is provided', () => {
-      const mockConfig = {
-        getAvailableModels: vi
-          .fn()
-          .mockReturnValue([
-            { id: 'custom', label: 'Custom', authType: AuthType.QWEN_OAUTH },
-          ]),
-      } as unknown as Config;
-
-      const models = getAvailableModelsForAuthType(
-        AuthType.QWEN_OAUTH,
-        mockConfig,
-      );
-      expect(models).toEqual(AVAILABLE_MODELS_QWEN);
-    });
-
-    it('should use config.getAvailableModels for openai authType when available', () => {
-      const mockModels = [
-        {
-          id: 'gpt-4',
-          label: 'GPT-4',
-          description: 'Test',
-          authType: AuthType.USE_OPENAI,
-          isVision: false,
-        },
-      ];
-      const getAvailableModelsForAuthType = vi.fn().mockReturnValue(mockModels);
-      const mockConfigWithMethod = {
-        // Prefer the newer API when available.
-        getAvailableModelsForAuthType,
-      };
-
-      const models = getAvailableModelsForAuthType(
-        AuthType.USE_OPENAI,
-        mockConfigWithMethod as unknown as Config,
-      );
-
-      expect(getAvailableModelsForAuthType).toHaveBeenCalled();
-      expect(models[0].id).toBe('gpt-4');
-    });
-
-    it('should fallback to env var for openai when config returns empty', () => {
-      process.env['OPENAI_MODEL'] = 'fallback-model';
-      const mockConfig = {
-        getAvailableModelsForAuthType: vi.fn().mockReturnValue([]),
-      } as unknown as Config;
-
-      const models = getAvailableModelsForAuthType(
-        AuthType.USE_OPENAI,
-        mockConfig,
-      );
-
-      expect(models).toEqual([]);
-    });
-
-    it('should fallback to env var for openai when config throws', () => {
-      process.env['OPENAI_MODEL'] = 'fallback-model';
-      const mockConfig = {
-        getAvailableModelsForAuthType: vi.fn().mockImplementation(() => {
-          throw new Error('Registry not initialized');
-        }),
-      } as unknown as Config;
-
-      const models = getAvailableModelsForAuthType(
-        AuthType.USE_OPENAI,
-        mockConfig,
-      );
-
-      expect(models).toEqual([]);
-    });
-
-    it('should return env model for openai without config', () => {
-      process.env['OPENAI_MODEL'] = 'gpt-4-turbo';
-      const models = getAvailableModelsForAuthType(AuthType.USE_OPENAI);
-      expect(models[0].id).toBe('gpt-4-turbo');
-    });
-
-    it('should return empty array for openai without config or env', () => {
-      delete process.env['OPENAI_MODEL'];
-      const models = getAvailableModelsForAuthType(AuthType.USE_OPENAI);
-      expect(models).toEqual([]);
-    });
-
-    it('should return empty array for other auth types', () => {
-      const models = getAvailableModelsForAuthType(AuthType.USE_GEMINI);
-      expect(models).toEqual([]);
-    });
-  });
-
-  describe('isVisionModel', () => {
-    it('should return true for vision model', () => {
-      expect(isVisionModel(MAINLINE_VLM)).toBe(true);
-    });
-
-    it('should return false for non-vision model', () => {
-      expect(isVisionModel(MAINLINE_CODER)).toBe(false);
-    });
-
-    it('should return false for unknown model', () => {
-      expect(isVisionModel('unknown-model')).toBe(false);
-    });
-  });
-
-  describe('getDefaultVisionModel', () => {
-    it('should return the vision model ID', () => {
-      expect(getDefaultVisionModel()).toBe(MAINLINE_VLM);
-    });
-  });
-});

packages/cli/src/ui/models/availableModels.ts

@@ -4,12 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import {
-  AuthType,
-  DEFAULT_QWEN_MODEL,
-  type Config,
-  type AvailableModel as CoreAvailableModel,
-} from '@qwen-code/qwen-code-core';
+import { AuthType, DEFAULT_QWEN_MODEL } from '@qwen-code/qwen-code-core';
 import { t } from '../../i18n/index.js';
 
 export type AvailableModel = {
@@ -62,78 +57,20 @@ export function getFilteredQwenModels(
  */
 export function getOpenAIAvailableModelFromEnv(): AvailableModel | null {
   const id = process.env['OPENAI_MODEL']?.trim();
-  return id
-    ? {
-        id,
-        label: id,
-        get description() {
-          return t('Configured via OPENAI_MODEL environment variable');
-        },
-      }
-    : null;
+  return id ? { id, label: id } : null;
 }
 
 export function getAnthropicAvailableModelFromEnv(): AvailableModel | null {
   const id = process.env['ANTHROPIC_MODEL']?.trim();
-  return id
-    ? {
-        id,
-        label: id,
-        get description() {
-          return t('Configured via ANTHROPIC_MODEL environment variable');
-        },
-      }
-    : null;
+  return id ? { id, label: id } : null;
 }
 
-/**
- * Convert core AvailableModel to CLI AvailableModel format
- */
-function convertCoreModelToCliModel(
-  coreModel: CoreAvailableModel,
-): AvailableModel {
-  return {
-    id: coreModel.id,
-    label: coreModel.label,
-    description: coreModel.description,
-    isVision: coreModel.isVision ?? coreModel.capabilities?.vision ?? false,
-  };
-}
-
-/**
- * Get available models for the given authType.
- *
- * If a Config object is provided, uses config.getAvailableModelsForAuthType().
- * For qwen-oauth, always returns the hard-coded models.
- * Falls back to environment variables only when no config is provided.
- */
 export function getAvailableModelsForAuthType(
   authType: AuthType,
-  config?: Config,
 ): AvailableModel[] {
-  // For qwen-oauth, always use hard-coded models, this aligns with the API gateway.
-  if (authType === AuthType.QWEN_OAUTH) {
-    return AVAILABLE_MODELS_QWEN;
-  }
-
-  // Use config's model registry when available
-  if (config) {
-    try {
-      const models = config.getAvailableModelsForAuthType(authType);
-      if (models.length > 0) {
-        return models.map(convertCoreModelToCliModel);
-      }
-    } catch {
-      // If config throws (e.g., not initialized), return empty array
-    }
-    // When a Config object is provided, we intentionally do NOT fall back to env-based
-    // "raw" models. These may reflect the currently effective config but should not be
-    // presented as selectable options in /model.
-    return [];
-  }
-
-  // Fall back to environment variables for specific auth types (no config provided)
   switch (authType) {
+    case AuthType.QWEN_OAUTH:
+      return AVAILABLE_MODELS_QWEN;
     case AuthType.USE_OPENAI: {
       const openAIModel = getOpenAIAvailableModelFromEnv();
       return openAIModel ? [openAIModel] : [];
@@ -143,10 +80,13 @@ export function getAvailableModelsForAuthType(
       return anthropicModel ? [anthropicModel] : [];
     }
     default:
+      // For other auth types, return empty array for now
+      // This can be expanded later according to the design doc
       return [];
   }
 }
 
+/**
 /**
  * Hard code the default vision model as a string literal,
  * until our coding model supports multimodal.

packages/cli/src/utils/modelConfigUtils.ts

@@ -1,133 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import {
-  AuthType,
-  type ContentGeneratorConfig,
-  type ContentGeneratorConfigSources,
-  resolveModelConfig,
-  type ModelConfigSourcesInput,
-} from '@qwen-code/qwen-code-core';
-import type { Settings } from '../config/settings.js';
-
-export interface CliGenerationConfigInputs {
-  argv: {
-    model?: string | undefined;
-    openaiApiKey?: string | undefined;
-    openaiBaseUrl?: string | undefined;
-    openaiLogging?: boolean | undefined;
-    openaiLoggingDir?: string | undefined;
-  };
-  settings: Settings;
-  selectedAuthType: AuthType | undefined;
-  /**
-   * Injectable env for testability. Defaults to process.env at callsites.
-   */
-  env?: Record<string, string | undefined>;
-}
-
-export interface ResolvedCliGenerationConfig {
-  /** The resolved model id (may be empty string if not resolvable at CLI layer) */
-  model: string;
-  /** API key for OpenAI-compatible auth */
-  apiKey: string;
-  /** Base URL for OpenAI-compatible auth */
-  baseUrl: string;
-  /** The full generation config to pass to core Config */
-  generationConfig: Partial<ContentGeneratorConfig>;
-  /** Source attribution for each resolved field */
-  sources: ContentGeneratorConfigSources;
-}
-
-export function getAuthTypeFromEnv(): AuthType | undefined {
-  if (process.env['OPENAI_API_KEY']) {
-    return AuthType.USE_OPENAI;
-  }
-  if (process.env['QWEN_OAUTH']) {
-    return AuthType.QWEN_OAUTH;
-  }
-
-  if (process.env['GEMINI_API_KEY']) {
-    return AuthType.USE_GEMINI;
-  }
-  if (process.env['GOOGLE_API_KEY']) {
-    return AuthType.USE_VERTEX_AI;
-  }
-  if (process.env['ANTHROPIC_API_KEY']) {
-    return AuthType.USE_ANTHROPIC;
-  }
-
-  return undefined;
-}
-
-/**
- * Unified resolver for CLI generation config.
- *
- * Precedence (for OpenAI auth):
- * - model: argv.model > OPENAI_MODEL > QWEN_MODEL > settings.model.name
- * - apiKey: argv.openaiApiKey > OPENAI_API_KEY > settings.security.auth.apiKey
- * - baseUrl: argv.openaiBaseUrl > OPENAI_BASE_URL > settings.security.auth.baseUrl
- *
- * For non-OpenAI auth, only argv.model override is respected at CLI layer.
- */
-export function resolveCliGenerationConfig(
-  inputs: CliGenerationConfigInputs,
-): ResolvedCliGenerationConfig {
-  const { argv, settings, selectedAuthType } = inputs;
-  const env = inputs.env ?? (process.env as Record<string, string | undefined>);
-
-  const authType = selectedAuthType;
-
-  const configSources: ModelConfigSourcesInput = {
-    authType,
-    cli: {
-      model: argv.model,
-      apiKey: argv.openaiApiKey,
-      baseUrl: argv.openaiBaseUrl,
-    },
-    settings: {
-      model: settings.model?.name,
-      apiKey: settings.security?.auth?.apiKey,
-      baseUrl: settings.security?.auth?.baseUrl,
-      generationConfig: settings.model?.generationConfig as
-        | Partial<ContentGeneratorConfig>
-        | undefined,
-    },
-    env,
-  };
-
-  const resolved = resolveModelConfig(configSources);
-
-  // Log warnings if any
-  for (const warning of resolved.warnings) {
-    console.warn(`[modelProviderUtils] ${warning}`);
-  }
-
-  // Resolve OpenAI logging config (CLI-specific, not part of core resolver)
-  const enableOpenAILogging =
-    (typeof argv.openaiLogging === 'undefined'
-      ? settings.model?.enableOpenAILogging
-      : argv.openaiLogging) ?? false;
-
-  const openAILoggingDir =
-    argv.openaiLoggingDir || settings.model?.openAILoggingDir;
-
-  // Build the full generation config
-  // Note: we merge the resolved config with logging settings
-  const generationConfig: Partial<ContentGeneratorConfig> = {
-    ...resolved.config,
-    enableOpenAILogging,
-    openAILoggingDir,
-  };
-
-  return {
-    model: resolved.config.model || '',
-    apiKey: resolved.config.apiKey || '',
-    baseUrl: resolved.config.baseUrl || '',
-    generationConfig,
-    sources: resolved.sources,
-  };
-}

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

@@ -57,7 +57,6 @@ describe('systemInfo', () => {
           getModel: vi.fn().mockReturnValue('test-model'),
           getIdeMode: vi.fn().mockReturnValue(true),
           getSessionId: vi.fn().mockReturnValue('test-session-id'),
-          getAuthType: vi.fn().mockReturnValue('test-auth'),
           getContentGeneratorConfig: vi.fn().mockReturnValue({
             baseUrl: 'https://api.openai.com',
           }),
@@ -274,9 +273,6 @@ describe('systemInfo', () => {
       // Update the mock context to use OpenAI auth
       mockContext.services.settings.merged.security!.auth!.selectedType =
         AuthType.USE_OPENAI;
-      vi.mocked(mockContext.services.config!.getAuthType).mockReturnValue(
-        AuthType.USE_OPENAI,
-      );
 
       const extendedInfo = await getExtendedSystemInfo(mockContext);
 

packages/cli/src/utils/systemInfo.ts

@@ -115,7 +115,8 @@ export async function getSystemInfo(
   const sandboxEnv = getSandboxEnv();
   const modelVersion = context.services.config?.getModel() || 'Unknown';
   const cliVersion = await getCliVersion();
-  const selectedAuthType = context.services.config?.getAuthType() || '';
+  const selectedAuthType =
+    context.services.settings.merged.security?.auth?.selectedType || '';
   const ideClient = await getIdeClientName(context);
   const sessionId = context.services.config?.getSessionId() || 'unknown';
 

packages/cli/src/validateNonInterActiveAuth.test.ts

@@ -14,20 +14,6 @@ import * as JsonOutputAdapterModule from './nonInteractive/io/JsonOutputAdapter.
 import * as StreamJsonOutputAdapterModule from './nonInteractive/io/StreamJsonOutputAdapter.js';
 import * as cleanupModule from './utils/cleanup.js';
 
-// Helper to create a mock Config with modelsConfig
-function createMockConfig(overrides?: Partial<Config>): Config {
-  return {
-    refreshAuth: vi.fn().mockResolvedValue('refreshed'),
-    getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
-    getContentGeneratorConfig: vi.fn().mockReturnValue({ authType: undefined }),
-    modelsConfig: {
-      getModel: vi.fn().mockReturnValue('default-model'),
-      getCurrentAuthType: vi.fn().mockReturnValue(AuthType.QWEN_OAUTH),
-    },
-    ...overrides,
-  } as unknown as Config;
-}
-
 describe('validateNonInterActiveAuth', () => {
   let originalEnvGeminiApiKey: string | undefined;
   let originalEnvVertexAi: string | undefined;
@@ -121,20 +107,17 @@ describe('validateNonInterActiveAuth', () => {
     vi.restoreAllMocks();
   });
 
-  it('exits if validateAuthMethod fails for default auth type', async () => {
-    // Mock validateAuthMethod to return error (e.g., missing API key)
-    vi.spyOn(auth, 'validateAuthMethod').mockReturnValue(
-      'Missing API key for authentication',
-    );
-    const nonInteractiveConfig = createMockConfig({
+  it('exits if no auth type is configured or env vars set', async () => {
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('default-model'),
-        getCurrentAuthType: vi.fn().mockReturnValue(AuthType.QWEN_OAUTH),
-      },
-    });
+      getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
+      getContentGeneratorConfig: vi
+        .fn()
+        .mockReturnValue({ authType: undefined }),
+    } as unknown as Config;
     try {
       await validateNonInteractiveAuth(
+        undefined,
         undefined,
         nonInteractiveConfig,
         mockSettings,
@@ -144,21 +127,22 @@ describe('validateNonInterActiveAuth', () => {
       expect((e as Error).message).toContain('process.exit(1) called');
     }
     expect(consoleErrorSpy).toHaveBeenCalledWith(
-      expect.stringContaining('Missing API key'),
+      expect.stringContaining('Please set an Auth method'),
     );
     expect(processExitSpy).toHaveBeenCalledWith(1);
   });
 
   it('uses USE_OPENAI if OPENAI_API_KEY is set', async () => {
     process.env['OPENAI_API_KEY'] = 'fake-openai-key';
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('default-model'),
-        getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-      },
-    });
+      getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
+      getContentGeneratorConfig: vi
+        .fn()
+        .mockReturnValue({ authType: undefined }),
+    } as unknown as Config;
     await validateNonInteractiveAuth(
+      undefined,
       undefined,
       nonInteractiveConfig,
       mockSettings,
@@ -167,14 +151,15 @@ describe('validateNonInterActiveAuth', () => {
   });
 
   it('uses configured QWEN_OAUTH if provided', async () => {
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('default-model'),
-        getCurrentAuthType: vi.fn().mockReturnValue(AuthType.QWEN_OAUTH),
-      },
-    });
+      getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
+      getContentGeneratorConfig: vi
+        .fn()
+        .mockReturnValue({ authType: undefined }),
+    } as unknown as Config;
     await validateNonInteractiveAuth(
+      AuthType.QWEN_OAUTH,
       undefined,
       nonInteractiveConfig,
       mockSettings,
@@ -185,11 +170,16 @@ describe('validateNonInterActiveAuth', () => {
   it('exits if validateAuthMethod returns error', async () => {
     // Mock validateAuthMethod to return error
     vi.spyOn(auth, 'validateAuthMethod').mockReturnValue('Auth error!');
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-    });
+      getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
+      getContentGeneratorConfig: vi
+        .fn()
+        .mockReturnValue({ authType: undefined }),
+    } as unknown as Config;
     try {
       await validateNonInteractiveAuth(
+        AuthType.USE_GEMINI,
         undefined,
         nonInteractiveConfig,
         mockSettings,
@@ -207,13 +197,14 @@ describe('validateNonInterActiveAuth', () => {
     const validateAuthMethodSpy = vi
       .spyOn(auth, 'validateAuthMethod')
       .mockReturnValue('Auth error!');
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-    });
+    } as unknown as Config;
 
-    // Even with validation errors, it should not exit
-    // because validation is skipped when useExternalAuth is true.
+    // Even with an invalid auth type, it should not exit
+    // because validation is skipped.
     await validateNonInteractiveAuth(
+      'invalid-auth-type' as AuthType,
       true, // useExternalAuth = true
       nonInteractiveConfig,
       mockSettings,
@@ -222,8 +213,8 @@ describe('validateNonInterActiveAuth', () => {
     expect(validateAuthMethodSpy).not.toHaveBeenCalled();
     expect(consoleErrorSpy).not.toHaveBeenCalled();
     expect(processExitSpy).not.toHaveBeenCalled();
-    // refreshAuth is called with the authType from config.modelsConfig.getCurrentAuthType()
-    expect(refreshAuthMock).toHaveBeenCalledWith(AuthType.QWEN_OAUTH);
+    // We still expect refreshAuth to be called with the (invalid) type
+    expect(refreshAuthMock).toHaveBeenCalledWith('invalid-auth-type');
   });
 
   it('uses enforcedAuthType if provided', async () => {
@@ -231,14 +222,11 @@ describe('validateNonInterActiveAuth', () => {
     mockSettings.merged.security!.auth!.selectedType = AuthType.USE_OPENAI;
     // Set required env var for USE_OPENAI to ensure enforcedAuthType takes precedence
     process.env['OPENAI_API_KEY'] = 'fake-key';
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('default-model'),
-        getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-      },
-    });
+    } as unknown as Config;
     await validateNonInteractiveAuth(
+      AuthType.USE_OPENAI,
       undefined,
       nonInteractiveConfig,
       mockSettings,
@@ -249,15 +237,16 @@ describe('validateNonInterActiveAuth', () => {
   it('exits if currentAuthType does not match enforcedAuthType', async () => {
     mockSettings.merged.security!.auth!.enforcedType = AuthType.QWEN_OAUTH;
     process.env['OPENAI_API_KEY'] = 'fake-key';
-    const nonInteractiveConfig = createMockConfig({
+    const nonInteractiveConfig = {
       refreshAuth: refreshAuthMock,
-      modelsConfig: {
-        getModel: vi.fn().mockReturnValue('default-model'),
-        getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-      },
-    });
+      getOutputFormat: vi.fn().mockReturnValue(OutputFormat.TEXT),
+      getContentGeneratorConfig: vi
+        .fn()
+        .mockReturnValue({ authType: undefined }),
+    } as unknown as Config;
     try {
       await validateNonInteractiveAuth(
+        AuthType.USE_OPENAI,
         undefined,
         nonInteractiveConfig,
         mockSettings,
@@ -290,21 +279,18 @@ describe('validateNonInterActiveAuth', () => {
       );
     });
 
-    it('emits error result and exits when validateAuthMethod fails', async () => {
-      vi.spyOn(auth, 'validateAuthMethod').mockReturnValue(
-        'Missing API key for authentication',
-      );
-      const nonInteractiveConfig = createMockConfig({
+    it('emits error result and exits when no auth is configured', async () => {
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.JSON),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.QWEN_OAUTH),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          undefined,
           undefined,
           nonInteractiveConfig,
           mockSettings,
@@ -316,7 +302,9 @@ describe('validateNonInterActiveAuth', () => {
 
       expect(emitResultMock).toHaveBeenCalledWith({
         isError: true,
-        errorMessage: expect.stringContaining('Missing API key'),
+        errorMessage: expect.stringContaining(
+          'Please set an Auth method in your',
+        ),
         durationMs: 0,
         apiDurationMs: 0,
         numTurns: 0,
@@ -331,17 +319,17 @@ describe('validateNonInterActiveAuth', () => {
       mockSettings.merged.security!.auth!.enforcedType = AuthType.QWEN_OAUTH;
       process.env['OPENAI_API_KEY'] = 'fake-key';
 
-      const nonInteractiveConfig = createMockConfig({
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.JSON),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          undefined,
           undefined,
           nonInteractiveConfig,
           mockSettings,
@@ -366,21 +354,21 @@ describe('validateNonInterActiveAuth', () => {
       expect(consoleErrorSpy).not.toHaveBeenCalled();
     });
 
-    it('emits error result and exits when API key validation fails', async () => {
+    it('emits error result and exits when validateAuthMethod fails', async () => {
       vi.spyOn(auth, 'validateAuthMethod').mockReturnValue('Auth error!');
       process.env['OPENAI_API_KEY'] = 'fake-key';
 
-      const nonInteractiveConfig = createMockConfig({
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.JSON),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          AuthType.USE_OPENAI,
           undefined,
           nonInteractiveConfig,
           mockSettings,
@@ -425,22 +413,19 @@ describe('validateNonInterActiveAuth', () => {
       );
     });
 
-    it('emits error result and exits when validateAuthMethod fails', async () => {
-      vi.spyOn(auth, 'validateAuthMethod').mockReturnValue(
-        'Missing API key for authentication',
-      );
-      const nonInteractiveConfig = createMockConfig({
+    it('emits error result and exits when no auth is configured', async () => {
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.STREAM_JSON),
         getIncludePartialMessages: vi.fn().mockReturnValue(false),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.QWEN_OAUTH),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          undefined,
           undefined,
           nonInteractiveConfig,
           mockSettings,
@@ -452,7 +437,9 @@ describe('validateNonInterActiveAuth', () => {
 
       expect(emitResultMock).toHaveBeenCalledWith({
         isError: true,
-        errorMessage: expect.stringContaining('Missing API key'),
+        errorMessage: expect.stringContaining(
+          'Please set an Auth method in your',
+        ),
         durationMs: 0,
         apiDurationMs: 0,
         numTurns: 0,
@@ -467,18 +454,18 @@ describe('validateNonInterActiveAuth', () => {
       mockSettings.merged.security!.auth!.enforcedType = AuthType.QWEN_OAUTH;
       process.env['OPENAI_API_KEY'] = 'fake-key';
 
-      const nonInteractiveConfig = createMockConfig({
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.STREAM_JSON),
         getIncludePartialMessages: vi.fn().mockReturnValue(false),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          undefined,
           undefined,
           nonInteractiveConfig,
           mockSettings,
@@ -503,22 +490,22 @@ describe('validateNonInterActiveAuth', () => {
       expect(consoleErrorSpy).not.toHaveBeenCalled();
     });
 
-    it('emits error result and exits when API key validation fails', async () => {
+    it('emits error result and exits when validateAuthMethod fails', async () => {
       vi.spyOn(auth, 'validateAuthMethod').mockReturnValue('Auth error!');
       process.env['OPENAI_API_KEY'] = 'fake-key';
 
-      const nonInteractiveConfig = createMockConfig({
+      const nonInteractiveConfig = {
         refreshAuth: refreshAuthMock,
         getOutputFormat: vi.fn().mockReturnValue(OutputFormat.STREAM_JSON),
         getIncludePartialMessages: vi.fn().mockReturnValue(false),
-        modelsConfig: {
-          getModel: vi.fn().mockReturnValue('default-model'),
-          getCurrentAuthType: vi.fn().mockReturnValue(AuthType.USE_OPENAI),
-        },
-      });
+        getContentGeneratorConfig: vi
+          .fn()
+          .mockReturnValue({ authType: undefined }),
+      } as unknown as Config;
 
       try {
         await validateNonInteractiveAuth(
+          AuthType.USE_OPENAI,
           undefined,
           nonInteractiveConfig,
           mockSettings,

packages/cli/src/validateNonInterActiveAuth.ts

@@ -5,42 +5,69 @@
  */
 
 import type { Config } from '@qwen-code/qwen-code-core';
-import { OutputFormat } from '@qwen-code/qwen-code-core';
+import { AuthType, OutputFormat } from '@qwen-code/qwen-code-core';
+import { USER_SETTINGS_PATH } from './config/settings.js';
 import { validateAuthMethod } from './config/auth.js';
 import { type LoadedSettings } from './config/settings.js';
 import { JsonOutputAdapter } from './nonInteractive/io/JsonOutputAdapter.js';
 import { StreamJsonOutputAdapter } from './nonInteractive/io/StreamJsonOutputAdapter.js';
 import { runExitCleanup } from './utils/cleanup.js';
 
+function getAuthTypeFromEnv(): AuthType | undefined {
+  if (process.env['OPENAI_API_KEY']) {
+    return AuthType.USE_OPENAI;
+  }
+  if (process.env['QWEN_OAUTH']) {
+    return AuthType.QWEN_OAUTH;
+  }
+
+  if (process.env['GEMINI_API_KEY']) {
+    return AuthType.USE_GEMINI;
+  }
+  if (process.env['GOOGLE_API_KEY']) {
+    return AuthType.USE_VERTEX_AI;
+  }
+  if (process.env['ANTHROPIC_API_KEY']) {
+    return AuthType.USE_ANTHROPIC;
+  }
+
+  return undefined;
+}
+
 export async function validateNonInteractiveAuth(
+  configuredAuthType: AuthType | undefined,
   useExternalAuth: boolean | undefined,
   nonInteractiveConfig: Config,
   settings: LoadedSettings,
 ): Promise<Config> {
   try {
-    // Get the actual authType from config which has already resolved CLI args, env vars, and settings
-    const authType = nonInteractiveConfig.modelsConfig.getCurrentAuthType();
-    if (!authType) {
-      throw new Error(
-        'No auth type is selected. Please configure an auth type (e.g. via settings or `--auth-type`) before running in non-interactive mode.',
-      );
-    }
-    const resolvedAuthType: NonNullable<typeof authType> = authType;
-
     const enforcedType = settings.merged.security?.auth?.enforcedType;
-    if (enforcedType && enforcedType !== resolvedAuthType) {
-      const message = `The configured auth type is ${enforcedType}, but the current auth type is ${resolvedAuthType}. Please re-authenticate with the correct type.`;
+    if (enforcedType) {
+      const currentAuthType = getAuthTypeFromEnv();
+      if (currentAuthType !== enforcedType) {
+        const message = `The configured auth type is ${enforcedType}, but the current auth type is ${currentAuthType}. Please re-authenticate with the correct type.`;
+        throw new Error(message);
+      }
+    }
+
+    const effectiveAuthType =
+      enforcedType || configuredAuthType || getAuthTypeFromEnv();
+
+    if (!effectiveAuthType) {
+      const message = `Please set an Auth method in your ${USER_SETTINGS_PATH} or specify one of the following environment variables before running: QWEN_OAUTH, OPENAI_API_KEY`;
       throw new Error(message);
     }
 
+    const authType: AuthType = effectiveAuthType as AuthType;
+
     if (!useExternalAuth) {
-      const err = validateAuthMethod(resolvedAuthType, nonInteractiveConfig);
+      const err = validateAuthMethod(String(authType));
       if (err != null) {
         throw new Error(err);
       }
     }
 
-    await nonInteractiveConfig.refreshAuth(resolvedAuthType);
+    await nonInteractiveConfig.refreshAuth(authType);
     return nonInteractiveConfig;
   } catch (error) {
     const outputFormat = nonInteractiveConfig.getOutputFormat();

packages/core/index.ts

@@ -8,8 +8,12 @@ export * from './src/index.js';
 export { Storage } from './src/config/storage.js';
 export {
   DEFAULT_QWEN_MODEL,
-  DEFAULT_QWEN_FLASH_MODEL,
   DEFAULT_QWEN_EMBEDDING_MODEL,
+  DEFAULT_GEMINI_MODEL,
+  DEFAULT_GEMINI_MODEL_AUTO,
+  DEFAULT_GEMINI_FLASH_MODEL,
+  DEFAULT_GEMINI_FLASH_LITE_MODEL,
+  DEFAULT_GEMINI_EMBEDDING_MODEL,
 } from './src/config/models.js';
 export {
   serializeTerminalToObject,

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code-core",
-  "version": "0.7.0",
+  "version": "0.6.1",
   "description": "Qwen Code Core",
   "repository": {
     "type": "git",

packages/core/src/config/config.test.ts

@@ -15,16 +15,10 @@ import {
   DEFAULT_OTLP_ENDPOINT,
   QwenLogger,
 } from '../telemetry/index.js';
-import type {
-  ContentGenerator,
-  ContentGeneratorConfig,
-} from '../core/contentGenerator.js';
-import { DEFAULT_DASHSCOPE_BASE_URL } from '../core/openaiContentGenerator/constants.js';
+import type { ContentGeneratorConfig } from '../core/contentGenerator.js';
 import {
   AuthType,
-  createContentGenerator,
   createContentGeneratorConfig,
-  resolveContentGeneratorConfigWithSources,
 } from '../core/contentGenerator.js';
 import { GeminiClient } from '../core/client.js';
 import { GitService } from '../services/gitService.js';
@@ -214,19 +208,6 @@ describe('Server Config (config.ts)', () => {
     vi.spyOn(QwenLogger.prototype, 'logStartSessionEvent').mockImplementation(
       async () => undefined,
     );
-
-    // Setup default mock for resolveContentGeneratorConfigWithSources
-    vi.mocked(resolveContentGeneratorConfigWithSources).mockImplementation(
-      (_config, authType, generationConfig) => ({
-        config: {
-          ...generationConfig,
-          authType,
-          model: generationConfig?.model || MODEL,
-          apiKey: 'test-key',
-        } as ContentGeneratorConfig,
-        sources: {},
-      }),
-    );
   });
 
   describe('initialize', () => {
@@ -274,28 +255,31 @@ describe('Server Config (config.ts)', () => {
       const mockContentConfig = {
         apiKey: 'test-key',
         model: 'qwen3-coder-plus',
-        authType,
       };
 
-      vi.mocked(resolveContentGeneratorConfigWithSources).mockReturnValue({
-        config: mockContentConfig as ContentGeneratorConfig,
-        sources: {},
-      });
+      vi.mocked(createContentGeneratorConfig).mockReturnValue(
+        mockContentConfig,
+      );
+
+      // Set fallback mode to true to ensure it gets reset
+      config.setFallbackMode(true);
+      expect(config.isInFallbackMode()).toBe(true);
 
       await config.refreshAuth(authType);
 
-      expect(resolveContentGeneratorConfigWithSources).toHaveBeenCalledWith(
+      expect(createContentGeneratorConfig).toHaveBeenCalledWith(
         config,
         authType,
-        expect.objectContaining({
+        {
           model: MODEL,
-        }),
-        expect.anything(),
-        expect.anything(),
+          baseUrl: undefined,
+        },
       );
       // Verify that contentGeneratorConfig is updated
       expect(config.getContentGeneratorConfig()).toEqual(mockContentConfig);
       expect(GeminiClient).toHaveBeenCalledWith(config);
+      // Verify that fallback mode is reset
+      expect(config.isInFallbackMode()).toBe(false);
     });
 
     it('should not strip thoughts when switching from Vertex to GenAI', async () => {
@@ -316,129 +300,6 @@ describe('Server Config (config.ts)', () => {
     });
   });
 
-  describe('model switching optimization (QWEN_OAUTH)', () => {
-    it('should switch qwen-oauth model in-place without refreshing auth when safe', async () => {
-      const config = new Config(baseParams);
-
-      const mockContentConfig: ContentGeneratorConfig = {
-        authType: AuthType.QWEN_OAUTH,
-        model: 'coder-model',
-        apiKey: 'QWEN_OAUTH_DYNAMIC_TOKEN',
-        baseUrl: DEFAULT_DASHSCOPE_BASE_URL,
-        timeout: 60000,
-        maxRetries: 3,
-      } as ContentGeneratorConfig;
-
-      vi.mocked(resolveContentGeneratorConfigWithSources).mockImplementation(
-        (_config, authType, generationConfig) => ({
-          config: {
-            ...mockContentConfig,
-            authType,
-            model: generationConfig?.model ?? mockContentConfig.model,
-          } as ContentGeneratorConfig,
-          sources: {},
-        }),
-      );
-      vi.mocked(createContentGenerator).mockResolvedValue({
-        generateContent: vi.fn(),
-        generateContentStream: vi.fn(),
-        countTokens: vi.fn(),
-        embedContent: vi.fn(),
-      } as unknown as ContentGenerator);
-
-      // Establish initial qwen-oauth content generator config/content generator.
-      await config.refreshAuth(AuthType.QWEN_OAUTH);
-
-      // Spy after initial refresh to ensure model switch does not re-trigger refreshAuth.
-      const refreshSpy = vi.spyOn(config, 'refreshAuth');
-
-      await config.switchModel(AuthType.QWEN_OAUTH, 'vision-model');
-
-      expect(config.getModel()).toBe('vision-model');
-      expect(refreshSpy).not.toHaveBeenCalled();
-      // Called once during initial refreshAuth + once during handleModelChange diffing.
-      expect(
-        vi.mocked(resolveContentGeneratorConfigWithSources),
-      ).toHaveBeenCalledTimes(2);
-      expect(vi.mocked(createContentGenerator)).toHaveBeenCalledTimes(1);
-    });
-  });
-
-  describe('model switching with different credentials (OpenAI)', () => {
-    it('should refresh auth when switching to model with different envKey', async () => {
-      // This test verifies the fix for switching between modelProvider models
-      // with different envKeys (e.g., deepseek-chat with DEEPSEEK_API_KEY)
-      const configWithModelProviders = new Config({
-        ...baseParams,
-        authType: AuthType.USE_OPENAI,
-        modelProvidersConfig: {
-          openai: [
-            {
-              id: 'model-a',
-              name: 'Model A',
-              baseUrl: 'https://api.example.com/v1',
-              envKey: 'API_KEY_A',
-            },
-            {
-              id: 'model-b',
-              name: 'Model B',
-              baseUrl: 'https://api.example.com/v1',
-              envKey: 'API_KEY_B',
-            },
-          ],
-        },
-      });
-
-      const mockContentConfigA: ContentGeneratorConfig = {
-        authType: AuthType.USE_OPENAI,
-        model: 'model-a',
-        apiKey: 'key-a',
-        baseUrl: 'https://api.example.com/v1',
-      } as ContentGeneratorConfig;
-
-      const mockContentConfigB: ContentGeneratorConfig = {
-        authType: AuthType.USE_OPENAI,
-        model: 'model-b',
-        apiKey: 'key-b',
-        baseUrl: 'https://api.example.com/v1',
-      } as ContentGeneratorConfig;
-
-      vi.mocked(resolveContentGeneratorConfigWithSources).mockImplementation(
-        (_config, _authType, generationConfig) => {
-          const model = generationConfig?.model;
-          return {
-            config:
-              model === 'model-b' ? mockContentConfigB : mockContentConfigA,
-            sources: {},
-          };
-        },
-      );
-
-      vi.mocked(createContentGenerator).mockResolvedValue({
-        generateContent: vi.fn(),
-        generateContentStream: vi.fn(),
-        countTokens: vi.fn(),
-        embedContent: vi.fn(),
-      } as unknown as ContentGenerator);
-
-      // Initialize with model-a
-      await configWithModelProviders.refreshAuth(AuthType.USE_OPENAI);
-
-      // Spy on refreshAuth to verify it's called when switching to model-b
-      const refreshSpy = vi.spyOn(configWithModelProviders, 'refreshAuth');
-
-      // Switch to model-b (different envKey)
-      await configWithModelProviders.switchModel(
-        AuthType.USE_OPENAI,
-        'model-b',
-      );
-
-      // Should trigger full refresh because envKey changed
-      expect(refreshSpy).toHaveBeenCalledWith(AuthType.USE_OPENAI);
-      expect(configWithModelProviders.getModel()).toBe('model-b');
-    });
-  });
-
   it('Config constructor should store userMemory correctly', () => {
     const config = new Config(baseParams);
 

packages/core/src/config/config.ts

@@ -16,8 +16,9 @@ import { ProxyAgent, setGlobalDispatcher } from 'undici';
 import type {
   ContentGenerator,
   ContentGeneratorConfig,
+  AuthType,
 } from '../core/contentGenerator.js';
-import type { ContentGeneratorConfigSources } from '../core/contentGenerator.js';
+import type { FallbackModelHandler } from '../fallback/types.js';
 import type { MCPOAuthConfig } from '../mcp/oauth-provider.js';
 import type { ShellExecutionConfig } from '../services/shellExecutionService.js';
 import type { AnyToolInvocation } from '../tools/tools.js';
@@ -26,9 +27,8 @@ import type { AnyToolInvocation } from '../tools/tools.js';
 import { BaseLlmClient } from '../core/baseLlmClient.js';
 import { GeminiClient } from '../core/client.js';
 import {
-  AuthType,
   createContentGenerator,
-  resolveContentGeneratorConfigWithSources,
+  createContentGeneratorConfig,
 } from '../core/contentGenerator.js';
 import { tokenLimit } from '../core/tokenLimits.js';
 
@@ -94,7 +94,7 @@ import {
   DEFAULT_FILE_FILTERING_OPTIONS,
   DEFAULT_MEMORY_FILE_FILTERING_OPTIONS,
 } from './constants.js';
-import { DEFAULT_QWEN_EMBEDDING_MODEL } from './models.js';
+import { DEFAULT_QWEN_EMBEDDING_MODEL, DEFAULT_QWEN_MODEL } from './models.js';
 import { Storage } from './storage.js';
 import { ChatRecordingService } from '../services/chatRecordingService.js';
 import {
@@ -103,12 +103,6 @@ import {
 } from '../services/sessionService.js';
 import { randomUUID } from 'node:crypto';
 
-import {
-  ModelsConfig,
-  type ModelProvidersConfig,
-  type AvailableModel,
-} from '../models/index.js';
-
 // Re-export types
 export type { AnyToolInvocation, FileFilteringOptions, MCPOAuthConfig };
 export {
@@ -324,11 +318,6 @@ export interface ConfigParameters {
   ideMode?: boolean;
   authType?: AuthType;
   generationConfig?: Partial<ContentGeneratorConfig>;
-  /**
-   * Optional source map for generationConfig fields (e.g. CLI/env/settings attribution).
-   * This is used to produce per-field source badges in the UI.
-   */
-  generationConfigSources?: ContentGeneratorConfigSources;
   cliVersion?: string;
   loadMemoryFromIncludeDirectories?: boolean;
   chatRecording?: boolean;
@@ -364,8 +353,6 @@ export interface ConfigParameters {
   sdkMode?: boolean;
   sessionSubagents?: SubagentConfig[];
   channel?: string;
-  /** Model providers configuration grouped by authType */
-  modelProvidersConfig?: ModelProvidersConfig;
 }
 
 function normalizeConfigOutputFormat(
@@ -407,12 +394,9 @@ export class Config {
   private skillManager!: SkillManager;
   private fileSystemService: FileSystemService;
   private contentGeneratorConfig!: ContentGeneratorConfig;
-  private contentGeneratorConfigSources: ContentGeneratorConfigSources = {};
   private contentGenerator!: ContentGenerator;
+  private _generationConfig: Partial<ContentGeneratorConfig>;
   private readonly embeddingModel: string;
-
-  private _modelsConfig!: ModelsConfig;
-  private readonly modelProvidersConfig?: ModelProvidersConfig;
   private readonly sandbox: SandboxConfig | undefined;
   private readonly targetDir: string;
   private workspaceContext: WorkspaceContext;
@@ -461,6 +445,7 @@ export class Config {
   private readonly folderTrust: boolean;
   private ideMode: boolean;
 
+  private inFallbackMode = false;
   private readonly maxSessionTurns: number;
   private readonly sessionTokenLimit: number;
   private readonly listExtensions: boolean;
@@ -469,6 +454,8 @@ export class Config {
     name: string;
     extensionName: string;
   }>;
+  fallbackModelHandler?: FallbackModelHandler;
+  private quotaErrorOccurred: boolean = false;
   private readonly summarizeToolOutput:
     | Record<string, SummarizeToolOutputSettings>
     | undefined;
@@ -583,7 +570,13 @@ export class Config {
     this.folderTrustFeature = params.folderTrustFeature ?? false;
     this.folderTrust = params.folderTrust ?? false;
     this.ideMode = params.ideMode ?? false;
-    this.modelProvidersConfig = params.modelProvidersConfig;
+    this._generationConfig = {
+      model: params.model,
+      ...(params.generationConfig || {}),
+      baseUrl: params.generationConfig?.baseUrl,
+    };
+    this.contentGeneratorConfig = this
+      ._generationConfig as ContentGeneratorConfig;
     this.cliVersion = params.cliVersion;
 
     this.chatRecordingEnabled = params.chatRecording ?? true;
@@ -626,22 +619,6 @@ export class Config {
       setGeminiMdFilename(params.contextFileName);
     }
 
-    // Create ModelsConfig for centralized model management
-    // Prefer params.authType over generationConfig.authType because:
-    // - params.authType preserves undefined (user hasn't selected yet)
-    // - generationConfig.authType may have a default value from resolvers
-    this._modelsConfig = new ModelsConfig({
-      initialAuthType: params.authType ?? params.generationConfig?.authType,
-      modelProvidersConfig: this.modelProvidersConfig,
-      generationConfig: {
-        model: params.model,
-        ...(params.generationConfig || {}),
-        baseUrl: params.generationConfig?.baseUrl,
-      },
-      generationConfigSources: params.generationConfigSources,
-      onModelChange: this.handleModelChange.bind(this),
-    });
-
     if (this.telemetrySettings.enabled) {
       initializeTelemetry(this);
     }
@@ -692,61 +669,45 @@ export class Config {
     return this.contentGenerator;
   }
 
-  /**
-   * Get the ModelsConfig instance for model-related operations.
-   * External code (e.g., CLI) can use this to access model configuration.
-   */
-  get modelsConfig(): ModelsConfig {
-    return this._modelsConfig;
-  }
-
   /**
    * Updates the credentials in the generation config.
-   * Exclusive for `OpenAIKeyPrompt` to update credentials via `/auth`
-   * Delegates to ModelsConfig.
+   * This is needed when credentials are set after Config construction.
    */
   updateCredentials(credentials: {
     apiKey?: string;
     baseUrl?: string;
     model?: string;
   }): void {
-    this._modelsConfig.updateCredentials(credentials);
+    if (credentials.apiKey) {
+      this._generationConfig.apiKey = credentials.apiKey;
+    }
+    if (credentials.baseUrl) {
+      this._generationConfig.baseUrl = credentials.baseUrl;
+    }
+    if (credentials.model) {
+      this._generationConfig.model = credentials.model;
+    }
   }
 
-  /**
-   * Refresh authentication and rebuild ContentGenerator.
-   */
   async refreshAuth(authMethod: AuthType, isInitialAuth?: boolean) {
-    // Sync modelsConfig state for this auth refresh
-    const modelId = this._modelsConfig.getModel();
-    this._modelsConfig.syncAfterAuthRefresh(authMethod, modelId);
-
-    // Check and consume cached credentials flag
-    const requireCached =
-      this._modelsConfig.consumeRequireCachedCredentialsFlag();
-
-    const { config, sources } = resolveContentGeneratorConfigWithSources(
+    const newContentGeneratorConfig = createContentGeneratorConfig(
       this,
       authMethod,
-      this._modelsConfig.getGenerationConfig(),
-      this._modelsConfig.getGenerationConfigSources(),
-      {
-        strictModelProvider:
-          this._modelsConfig.isStrictModelProviderSelection(),
-      },
+      this._generationConfig,
     );
-    const newContentGeneratorConfig = config;
     this.contentGenerator = await createContentGenerator(
       newContentGeneratorConfig,
       this,
-      requireCached ? true : isInitialAuth,
+      isInitialAuth,
     );
     // Only assign to instance properties after successful initialization
     this.contentGeneratorConfig = newContentGeneratorConfig;
-    this.contentGeneratorConfigSources = sources;
 
     // Initialize BaseLlmClient now that the ContentGenerator is available
     this.baseLlmClient = new BaseLlmClient(this.contentGenerator, this);
+
+    // Reset the session flag since we're explicitly changing auth and using default model
+    this.inFallbackMode = false;
   }
 
   /**
@@ -806,125 +767,31 @@ export class Config {
     return this.contentGeneratorConfig;
   }
 
-  getContentGeneratorConfigSources(): ContentGeneratorConfigSources {
-    // If contentGeneratorConfigSources is empty (before initializeAuth),
-    // get sources from ModelsConfig
-    if (
-      Object.keys(this.contentGeneratorConfigSources).length === 0 &&
-      this._modelsConfig
-    ) {
-      return this._modelsConfig.getGenerationConfigSources();
-    }
-    return this.contentGeneratorConfigSources;
-  }
-
   getModel(): string {
-    return this.contentGeneratorConfig?.model || this._modelsConfig.getModel();
+    return this.contentGeneratorConfig?.model || DEFAULT_QWEN_MODEL;
   }
 
-  /**
-   * Set model programmatically (e.g., VLM auto-switch, fallback).
-   * Delegates to ModelsConfig.
-   */
   async setModel(
     newModel: string,
-    metadata?: { reason?: string; context?: string },
+    _metadata?: { reason?: string; context?: string },
   ): Promise<void> {
-    await this._modelsConfig.setModel(newModel, metadata);
-    // Also update contentGeneratorConfig for hot-update compatibility
     if (this.contentGeneratorConfig) {
       this.contentGeneratorConfig.model = newModel;
     }
+    // TODO: Log _metadata for telemetry if needed
+    // This _metadata can be used for tracking model switches (reason, context)
   }
 
-  /**
-   * Handle model change from ModelsConfig.
-   * This updates the content generator config with the new model settings.
-   */
-  private async handleModelChange(
-    authType: AuthType,
-    requiresRefresh: boolean,
-  ): Promise<void> {
-    if (!this.contentGeneratorConfig) {
-      return;
-    }
-
-    // Hot update path: only supported for qwen-oauth.
-    // For other auth types we always refresh to recreate the ContentGenerator.
-    //
-    // Rationale:
-    // - Non-qwen providers may need to re-validate credentials / baseUrl / envKey.
-    // - ModelsConfig.applyResolvedModelDefaults can clear or change credentials sources.
-    // - Refresh keeps runtime behavior consistent and centralized.
-    if (authType === AuthType.QWEN_OAUTH && !requiresRefresh) {
-      const { config, sources } = resolveContentGeneratorConfigWithSources(
-        this,
-        authType,
-        this._modelsConfig.getGenerationConfig(),
-        this._modelsConfig.getGenerationConfigSources(),
-        {
-          strictModelProvider:
-            this._modelsConfig.isStrictModelProviderSelection(),
-        },
-      );
-
-      // Hot-update fields (qwen-oauth models share the same auth + client).
-      this.contentGeneratorConfig.model = config.model;
-      this.contentGeneratorConfig.samplingParams = config.samplingParams;
-      this.contentGeneratorConfig.disableCacheControl =
-        config.disableCacheControl;
-
-      if ('model' in sources) {
-        this.contentGeneratorConfigSources['model'] = sources['model'];
-      }
-      if ('samplingParams' in sources) {
-        this.contentGeneratorConfigSources['samplingParams'] =
-          sources['samplingParams'];
-      }
-      if ('disableCacheControl' in sources) {
-        this.contentGeneratorConfigSources['disableCacheControl'] =
-          sources['disableCacheControl'];
-      }
-      return;
-    }
-
-    // Full refresh path
-    await this.refreshAuth(authType);
+  isInFallbackMode(): boolean {
+    return this.inFallbackMode;
   }
 
-  /**
-   * Get available models for the current authType.
-   * Delegates to ModelsConfig.
-   */
-  getAvailableModels(): AvailableModel[] {
-    return this._modelsConfig.getAvailableModels();
+  setFallbackMode(active: boolean): void {
+    this.inFallbackMode = active;
   }
 
-  /**
-   * Get available models for a specific authType.
-   * Delegates to ModelsConfig.
-   */
-  getAvailableModelsForAuthType(authType: AuthType): AvailableModel[] {
-    return this._modelsConfig.getAvailableModelsForAuthType(authType);
-  }
-
-  /**
-   * Switch authType+model via registry-backed selection.
-   * This triggers a refresh of the ContentGenerator when required (always on authType changes).
-   * For qwen-oauth model switches that are hot-update safe, this may update in place.
-   *
-   * @param authType - Target authentication type
-   * @param modelId - Target model ID
-   * @param options - Additional options like requireCachedCredentials
-   * @param metadata - Metadata for logging/tracking
-   */
-  async switchModel(
-    authType: AuthType,
-    modelId: string,
-    options?: { requireCachedCredentials?: boolean },
-    metadata?: { reason?: string; context?: string },
-  ): Promise<void> {
-    await this._modelsConfig.switchModel(authType, modelId, options, metadata);
+  setFallbackModelHandler(handler: FallbackModelHandler): void {
+    this.fallbackModelHandler = handler;
   }
 
   getMaxSessionTurns(): number {
@@ -935,6 +802,14 @@ export class Config {
     return this.sessionTokenLimit;
   }
 
+  setQuotaErrorOccurred(value: boolean): void {
+    this.quotaErrorOccurred = value;
+  }
+
+  getQuotaErrorOccurred(): boolean {
+    return this.quotaErrorOccurred;
+  }
+
   getEmbeddingModel(): string {
     return this.embeddingModel;
   }
@@ -1276,7 +1151,7 @@ export class Config {
   }
 
   getAuthType(): AuthType | undefined {
-    return this.contentGeneratorConfig?.authType;
+    return this.contentGeneratorConfig.authType;
   }
 
   getCliVersion(): string | undefined {

packages/core/src/config/flashFallback.test.ts

@@ -0,0 +1,99 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { Config } from './config.js';
+import { DEFAULT_GEMINI_MODEL, DEFAULT_GEMINI_FLASH_MODEL } from './models.js';
+import fs from 'node:fs';
+
+vi.mock('node:fs');
+
+describe('Flash Model Fallback Configuration', () => {
+  let config: Config;
+
+  beforeEach(() => {
+    vi.mocked(fs.existsSync).mockReturnValue(true);
+    vi.mocked(fs.statSync).mockReturnValue({
+      isDirectory: () => true,
+    } as fs.Stats);
+    config = new Config({
+      targetDir: '/test',
+      debugMode: false,
+      cwd: '/test',
+      model: DEFAULT_GEMINI_MODEL,
+    });
+
+    // Initialize contentGeneratorConfig for testing
+    (
+      config as unknown as { contentGeneratorConfig: unknown }
+    ).contentGeneratorConfig = {
+      model: DEFAULT_GEMINI_MODEL,
+      authType: 'gemini-api-key',
+    };
+  });
+
+  // These tests do not actually test fallback. isInFallbackMode() only returns true,
+  // when setFallbackMode is marked as true. This is to decouple setting a model
+  // with the fallback mechanism. This will be necessary we introduce more
+  // intelligent model routing.
+  describe('setModel', () => {
+    it('should only mark as switched if contentGeneratorConfig exists', async () => {
+      // Create config without initializing contentGeneratorConfig
+      const newConfig = new Config({
+        targetDir: '/test',
+        debugMode: false,
+        cwd: '/test',
+        model: DEFAULT_GEMINI_MODEL,
+      });
+
+      // Should not crash when contentGeneratorConfig is undefined
+      await newConfig.setModel(DEFAULT_GEMINI_FLASH_MODEL);
+      expect(newConfig.isInFallbackMode()).toBe(false);
+    });
+  });
+
+  describe('getModel', () => {
+    it('should return contentGeneratorConfig model if available', async () => {
+      // Simulate initialized content generator config
+      await config.setModel(DEFAULT_GEMINI_FLASH_MODEL);
+      expect(config.getModel()).toBe(DEFAULT_GEMINI_FLASH_MODEL);
+    });
+
+    it('should fall back to initial model if contentGeneratorConfig is not available', () => {
+      // Test with fresh config where contentGeneratorConfig might not be set
+      const newConfig = new Config({
+        targetDir: '/test',
+        debugMode: false,
+        cwd: '/test',
+        model: 'custom-model',
+      });
+
+      expect(newConfig.getModel()).toBe('custom-model');
+    });
+  });
+
+  describe('isInFallbackMode', () => {
+    it('should start as false for new session', () => {
+      expect(config.isInFallbackMode()).toBe(false);
+    });
+
+    it('should remain false if no model switch occurs', () => {
+      // Perform other operations that don't involve model switching
+      expect(config.isInFallbackMode()).toBe(false);
+    });
+
+    it('should persist switched state throughout session', async () => {
+      await config.setModel(DEFAULT_GEMINI_FLASH_MODEL);
+      // Setting state for fallback mode as is expected of clients
+      config.setFallbackMode(true);
+      expect(config.isInFallbackMode()).toBe(true);
+
+      // Should remain true even after getting model
+      config.getModel();
+      expect(config.isInFallbackMode()).toBe(true);
+    });
+  });
+});

packages/core/src/config/models.test.ts

@@ -0,0 +1,83 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect } from 'vitest';
+import {
+  getEffectiveModel,
+  DEFAULT_GEMINI_MODEL,
+  DEFAULT_GEMINI_FLASH_MODEL,
+  DEFAULT_GEMINI_FLASH_LITE_MODEL,
+} from './models.js';
+
+describe('getEffectiveModel', () => {
+  describe('When NOT in fallback mode', () => {
+    const isInFallbackMode = false;
+
+    it('should return the Pro model when Pro is requested', () => {
+      const model = getEffectiveModel(isInFallbackMode, DEFAULT_GEMINI_MODEL);
+      expect(model).toBe(DEFAULT_GEMINI_MODEL);
+    });
+
+    it('should return the Flash model when Flash is requested', () => {
+      const model = getEffectiveModel(
+        isInFallbackMode,
+        DEFAULT_GEMINI_FLASH_MODEL,
+      );
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_MODEL);
+    });
+
+    it('should return the Lite model when Lite is requested', () => {
+      const model = getEffectiveModel(
+        isInFallbackMode,
+        DEFAULT_GEMINI_FLASH_LITE_MODEL,
+      );
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_LITE_MODEL);
+    });
+
+    it('should return a custom model name when requested', () => {
+      const customModel = 'custom-model-v1';
+      const model = getEffectiveModel(isInFallbackMode, customModel);
+      expect(model).toBe(customModel);
+    });
+  });
+
+  describe('When IN fallback mode', () => {
+    const isInFallbackMode = true;
+
+    it('should downgrade the Pro model to the Flash model', () => {
+      const model = getEffectiveModel(isInFallbackMode, DEFAULT_GEMINI_MODEL);
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_MODEL);
+    });
+
+    it('should return the Flash model when Flash is requested', () => {
+      const model = getEffectiveModel(
+        isInFallbackMode,
+        DEFAULT_GEMINI_FLASH_MODEL,
+      );
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_MODEL);
+    });
+
+    it('should HONOR the Lite model when Lite is requested', () => {
+      const model = getEffectiveModel(
+        isInFallbackMode,
+        DEFAULT_GEMINI_FLASH_LITE_MODEL,
+      );
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_LITE_MODEL);
+    });
+
+    it('should HONOR any model with "lite" in its name', () => {
+      const customLiteModel = 'gemini-2.5-custom-lite-vNext';
+      const model = getEffectiveModel(isInFallbackMode, customLiteModel);
+      expect(model).toBe(customLiteModel);
+    });
+
+    it('should downgrade any other custom model to the Flash model', () => {
+      const customModel = 'custom-model-v1-unlisted';
+      const model = getEffectiveModel(isInFallbackMode, customModel);
+      expect(model).toBe(DEFAULT_GEMINI_FLASH_MODEL);
+    });
+  });
+});

packages/core/src/config/models.ts

@@ -7,3 +7,46 @@
 export const DEFAULT_QWEN_MODEL = 'coder-model';
 export const DEFAULT_QWEN_FLASH_MODEL = 'coder-model';
 export const DEFAULT_QWEN_EMBEDDING_MODEL = 'text-embedding-v4';
+
+export const DEFAULT_GEMINI_MODEL = 'coder-model';
+export const DEFAULT_GEMINI_FLASH_MODEL = 'gemini-2.5-flash';
+export const DEFAULT_GEMINI_FLASH_LITE_MODEL = 'gemini-2.5-flash-lite';
+
+export const DEFAULT_GEMINI_MODEL_AUTO = 'auto';
+
+export const DEFAULT_GEMINI_EMBEDDING_MODEL = 'gemini-embedding-001';
+
+// Some thinking models do not default to dynamic thinking which is done by a value of -1
+export const DEFAULT_THINKING_MODE = -1;
+
+/**
+ * Determines the effective model to use, applying fallback logic if necessary.
+ *
+ * When fallback mode is active, this function enforces the use of the standard
+ * fallback model. However, it makes an exception for "lite" models (any model
+ * with "lite" in its name), allowing them to be used to preserve cost savings.
+ * This ensures that "pro" models are always downgraded, while "lite" model
+ * requests are honored.
+ *
+ * @param isInFallbackMode Whether the application is in fallback mode.
+ * @param requestedModel The model that was originally requested.
+ * @returns The effective model name.
+ */
+export function getEffectiveModel(
+  isInFallbackMode: boolean,
+  requestedModel: string,
+): string {
+  // If we are not in fallback mode, simply use the requested model.
+  if (!isInFallbackMode) {
+    return requestedModel;
+  }
+
+  // If a "lite" model is requested, honor it. This allows for variations of
+  // lite models without needing to list them all as constants.
+  if (requestedModel.includes('lite')) {
+    return requestedModel;
+  }
+
+  // Default fallback for Gemini CLI.
+  return DEFAULT_GEMINI_FLASH_MODEL;
+}

packages/core/src/core/client.test.ts

@@ -32,7 +32,7 @@ import {
   type ChatCompressionInfo,
 } from './turn.js';
 import { getCoreSystemPrompt } from './prompts.js';
-import { DEFAULT_QWEN_FLASH_MODEL } from '../config/models.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
 import { FileDiscoveryService } from '../services/fileDiscoveryService.js';
 import { setSimulate429 } from '../utils/testUtils.js';
 import { tokenLimit } from './tokenLimits.js';
@@ -302,6 +302,8 @@ describe('Gemini Client (client.ts)', () => {
       getFileService: vi.fn().mockReturnValue(fileService),
       getMaxSessionTurns: vi.fn().mockReturnValue(0),
       getSessionTokenLimit: vi.fn().mockReturnValue(32000),
+      getQuotaErrorOccurred: vi.fn().mockReturnValue(false),
+      setQuotaErrorOccurred: vi.fn(),
       getNoBrowser: vi.fn().mockReturnValue(false),
       getUsageStatisticsEnabled: vi.fn().mockReturnValue(true),
       getApprovalMode: vi.fn().mockReturnValue(ApprovalMode.DEFAULT),
@@ -315,6 +317,8 @@ describe('Gemini Client (client.ts)', () => {
       getModelRouterService: vi.fn().mockReturnValue({
         route: vi.fn().mockResolvedValue({ model: 'default-routed-model' }),
       }),
+      isInFallbackMode: vi.fn().mockReturnValue(false),
+      setFallbackMode: vi.fn(),
       getCliVersion: vi.fn().mockReturnValue('1.0.0'),
       getChatCompression: vi.fn().mockReturnValue(undefined),
       getSkipNextSpeakerCheck: vi.fn().mockReturnValue(false),
@@ -1058,18 +1062,26 @@ describe('Gemini Client (client.ts)', () => {
 
       // Assert
       expect(ideContextStore.get).toHaveBeenCalled();
-      const expectedContext = `Here is the user's editor context. This is for your information only.
-Active file:
-  Path: /path/to/active/file.ts
-  Cursor: line 5, character 10
-  Selected text:
+      const expectedContext = `
+Here is the user's editor context as a JSON object. This is for your information only.
+\`\`\`json
+${JSON.stringify(
+  {
+    activeFile: {
+      path: '/path/to/active/file.ts',
+      cursor: {
+        line: 5,
+        character: 10,
+      },
+      selectedText: 'hello',
+    },
+    otherOpenFiles: ['/path/to/recent/file1.ts', '/path/to/recent/file2.ts'],
+  },
+  null,
+  2,
+)}
 \`\`\`
-hello
-\`\`\`
-
-Other open files:
-  - /path/to/recent/file1.ts
-  - /path/to/recent/file2.ts`;
+      `.trim();
       const expectedRequest = [{ text: expectedContext }];
       expect(mockChat.addHistory).toHaveBeenCalledWith({
         role: 'user',
@@ -1169,14 +1181,25 @@ Other open files:
 
       // Assert
       expect(ideContextStore.get).toHaveBeenCalled();
-      const expectedContext = `Here is the user's editor context. This is for your information only.
-Active file:
-  Path: /path/to/active/file.ts
-  Cursor: line 5, character 10
-  Selected text:
+      const expectedContext = `
+Here is the user's editor context as a JSON object. This is for your information only.
+\`\`\`json
+${JSON.stringify(
+  {
+    activeFile: {
+      path: '/path/to/active/file.ts',
+      cursor: {
+        line: 5,
+        character: 10,
+      },
+      selectedText: 'hello',
+    },
+  },
+  null,
+  2,
+)}
 \`\`\`
-hello
-\`\`\``;
+      `.trim();
       const expectedRequest = [{ text: expectedContext }];
       expect(mockChat.addHistory).toHaveBeenCalledWith({
         role: 'user',
@@ -1235,10 +1258,18 @@ hello
 
       // Assert
       expect(ideContextStore.get).toHaveBeenCalled();
-      const expectedContext = `Here is the user's editor context. This is for your information only.
-Other open files:
-  - /path/to/recent/file1.ts
-  - /path/to/recent/file2.ts`;
+      const expectedContext = `
+Here is the user's editor context as a JSON object. This is for your information only.
+\`\`\`json
+${JSON.stringify(
+  {
+    otherOpenFiles: ['/path/to/recent/file1.ts', '/path/to/recent/file2.ts'],
+  },
+  null,
+  2,
+)}
+\`\`\`
+      `.trim();
       const expectedRequest = [{ text: expectedContext }];
       expect(mockChat.addHistory).toHaveBeenCalledWith({
         role: 'user',
@@ -1755,9 +1786,11 @@ Other open files:
         // Also verify it's the full context, not a delta.
         const call = mockChat.addHistory.mock.calls[0][0];
         const contextText = call.parts[0].text;
-        // Verify it contains the active file information in plain text format
-        expect(contextText).toContain('Active file:');
-        expect(contextText).toContain('Path: /path/to/active/file.ts');
+        const contextJson = JSON.parse(
+          contextText.match(/```json\n(.*)\n```/s)![1],
+        );
+        expect(contextJson).toHaveProperty('activeFile');
+        expect(contextJson.activeFile.path).toBe('/path/to/active/file.ts');
       });
     });
 
@@ -1960,7 +1993,7 @@ Other open files:
         );
         expect(contextCall).toBeDefined();
         expect(JSON.stringify(contextCall![0])).toContain(
-          "Here is the user's editor context.",
+          "Here is the user's editor context as a JSON object",
         );
         // Check that the sent context is the new one (fileB.ts)
         expect(JSON.stringify(contextCall![0])).toContain('fileB.ts');
@@ -1996,7 +2029,9 @@ Other open files:
 
         // Assert: Full context for fileA.ts was sent and stored.
         const initialCall = vi.mocked(mockChat.addHistory!).mock.calls[0][0];
-        expect(JSON.stringify(initialCall)).toContain("user's editor context.");
+        expect(JSON.stringify(initialCall)).toContain(
+          "user's editor context as a JSON object",
+        );
         expect(JSON.stringify(initialCall)).toContain('fileA.ts');
         // This implicitly tests that `lastSentIdeContext` is now set internally by the client.
         vi.mocked(mockChat.addHistory!).mockClear();
@@ -2094,9 +2129,9 @@ Other open files:
         const finalCall = vi.mocked(mockChat.addHistory!).mock.calls[0][0];
         expect(JSON.stringify(finalCall)).toContain('summary of changes');
         // The delta should reflect fileA being closed and fileC being opened.
-        expect(JSON.stringify(finalCall)).toContain('Files closed');
+        expect(JSON.stringify(finalCall)).toContain('filesClosed');
         expect(JSON.stringify(finalCall)).toContain('fileA.ts');
-        expect(JSON.stringify(finalCall)).toContain('Active file changed');
+        expect(JSON.stringify(finalCall)).toContain('activeFileChanged');
         expect(JSON.stringify(finalCall)).toContain('fileC.ts');
       });
     });
@@ -2227,12 +2262,12 @@ Other open files:
         contents,
         generationConfig,
         abortSignal,
-        DEFAULT_QWEN_FLASH_MODEL,
+        DEFAULT_GEMINI_FLASH_MODEL,
       );
 
       expect(mockContentGenerator.generateContent).toHaveBeenCalledWith(
         expect.objectContaining({
-          model: DEFAULT_QWEN_FLASH_MODEL,
+          model: DEFAULT_GEMINI_FLASH_MODEL,
           config: expect.objectContaining({
             abortSignal,
             systemInstruction: getCoreSystemPrompt(''),
@@ -2255,7 +2290,7 @@ Other open files:
         contents,
         {},
         new AbortController().signal,
-        DEFAULT_QWEN_FLASH_MODEL,
+        DEFAULT_GEMINI_FLASH_MODEL,
       );
 
       expect(mockContentGenerator.generateContent).not.toHaveBeenCalledWith({
@@ -2265,7 +2300,7 @@ Other open files:
       });
       expect(mockContentGenerator.generateContent).toHaveBeenCalledWith(
         {
-          model: DEFAULT_QWEN_FLASH_MODEL,
+          model: DEFAULT_GEMINI_FLASH_MODEL,
           config: expect.any(Object),
           contents,
         },
@@ -2273,7 +2308,28 @@ Other open files:
       );
     });
 
-    // Note: there is currently no "fallback mode" model routing; the model used
-    // is always the one explicitly requested by the caller.
+    it('should use the Flash model when fallback mode is active', async () => {
+      const contents = [{ role: 'user', parts: [{ text: 'hello' }] }];
+      const generationConfig = { temperature: 0.5 };
+      const abortSignal = new AbortController().signal;
+      const requestedModel = 'gemini-2.5-pro'; // A non-flash model
+
+      // Mock config to be in fallback mode
+      vi.spyOn(client['config'], 'isInFallbackMode').mockReturnValue(true);
+
+      await client.generateContent(
+        contents,
+        generationConfig,
+        abortSignal,
+        requestedModel,
+      );
+
+      expect(mockGenerateContentFn).toHaveBeenCalledWith(
+        expect.objectContaining({
+          model: DEFAULT_GEMINI_FLASH_MODEL,
+        }),
+        'test-session-id',
+      );
+    });
   });
 });

packages/core/src/core/client.ts

@@ -15,6 +15,7 @@ import type {
 
 // Config
 import { ApprovalMode, type Config } from '../config/config.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
 
 // Core modules
 import type { ContentGenerator } from './contentGenerator.js';
@@ -218,48 +219,42 @@ export class GeminiClient {
     }
 
     if (forceFullContext || !this.lastSentIdeContext) {
-      // Send full context as plain text
+      // Send full context as JSON
       const openFiles = currentIdeContext.workspaceState?.openFiles || [];
       const activeFile = openFiles.find((f) => f.isActive);
       const otherOpenFiles = openFiles
         .filter((f) => !f.isActive)
         .map((f) => f.path);
 
-      const contextLines: string[] = [];
+      const contextData: Record<string, unknown> = {};
 
       if (activeFile) {
-        contextLines.push('Active file:');
-        contextLines.push(`  Path: ${activeFile.path}`);
-        if (activeFile.cursor) {
-          contextLines.push(
-            `  Cursor: line ${activeFile.cursor.line}, character ${activeFile.cursor.character}`,
-          );
-        }
-        if (activeFile.selectedText) {
-          contextLines.push('  Selected text:');
-          contextLines.push('```');
-          contextLines.push(activeFile.selectedText);
-          contextLines.push('```');
-        }
+        contextData['activeFile'] = {
+          path: activeFile.path,
+          cursor: activeFile.cursor
+            ? {
+                line: activeFile.cursor.line,
+                character: activeFile.cursor.character,
+              }
+            : undefined,
+          selectedText: activeFile.selectedText || undefined,
+        };
       }
 
       if (otherOpenFiles.length > 0) {
-        if (contextLines.length > 0) {
-          contextLines.push('');
-        }
-        contextLines.push('Other open files:');
-        for (const filePath of otherOpenFiles) {
-          contextLines.push(`  - ${filePath}`);
-        }
+        contextData['otherOpenFiles'] = otherOpenFiles;
       }
 
-      if (contextLines.length === 0) {
+      if (Object.keys(contextData).length === 0) {
         return { contextParts: [], newIdeContext: currentIdeContext };
       }
 
+      const jsonString = JSON.stringify(contextData, null, 2);
       const contextParts = [
-        "Here is the user's editor context. This is for your information only.",
-        contextLines.join('\n'),
+        "Here is the user's editor context as a JSON object. This is for your information only.",
+        '```json',
+        jsonString,
+        '```',
       ];
 
       if (this.config.getDebugMode()) {
@@ -270,8 +265,9 @@ export class GeminiClient {
         newIdeContext: currentIdeContext,
       };
     } else {
-      // Calculate and send delta as plain text
-      const changeLines: string[] = [];
+      // Calculate and send delta as JSON
+      const delta: Record<string, unknown> = {};
+      const changes: Record<string, unknown> = {};
 
       const lastFiles = new Map(
         (this.lastSentIdeContext.workspaceState?.openFiles || []).map(
@@ -292,10 +288,7 @@ export class GeminiClient {
         }
       }
       if (openedFiles.length > 0) {
-        changeLines.push('Files opened:');
-        for (const filePath of openedFiles) {
-          changeLines.push(`  - ${filePath}`);
-        }
+        changes['filesOpened'] = openedFiles;
       }
 
       const closedFiles: string[] = [];
@@ -305,13 +298,7 @@ export class GeminiClient {
         }
       }
       if (closedFiles.length > 0) {
-        if (changeLines.length > 0) {
-          changeLines.push('');
-        }
-        changeLines.push('Files closed:');
-        for (const filePath of closedFiles) {
-          changeLines.push(`  - ${filePath}`);
-        }
+        changes['filesClosed'] = closedFiles;
       }
 
       const lastActiveFile = (
@@ -323,22 +310,16 @@ export class GeminiClient {
 
       if (currentActiveFile) {
         if (!lastActiveFile || lastActiveFile.path !== currentActiveFile.path) {
-          if (changeLines.length > 0) {
-            changeLines.push('');
-          }
-          changeLines.push('Active file changed:');
-          changeLines.push(`  Path: ${currentActiveFile.path}`);
-          if (currentActiveFile.cursor) {
-            changeLines.push(
-              `  Cursor: line ${currentActiveFile.cursor.line}, character ${currentActiveFile.cursor.character}`,
-            );
-          }
-          if (currentActiveFile.selectedText) {
-            changeLines.push('  Selected text:');
-            changeLines.push('```');
-            changeLines.push(currentActiveFile.selectedText);
-            changeLines.push('```');
-          }
+          changes['activeFileChanged'] = {
+            path: currentActiveFile.path,
+            cursor: currentActiveFile.cursor
+              ? {
+                  line: currentActiveFile.cursor.line,
+                  character: currentActiveFile.cursor.character,
+                }
+              : undefined,
+            selectedText: currentActiveFile.selectedText || undefined,
+          };
         } else {
           const lastCursor = lastActiveFile.cursor;
           const currentCursor = currentActiveFile.cursor;
@@ -348,50 +329,42 @@ export class GeminiClient {
               lastCursor.line !== currentCursor.line ||
               lastCursor.character !== currentCursor.character)
           ) {
-            if (changeLines.length > 0) {
-              changeLines.push('');
-            }
-            changeLines.push('Cursor moved:');
-            changeLines.push(`  Path: ${currentActiveFile.path}`);
-            changeLines.push(
-              `  New position: line ${currentCursor.line}, character ${currentCursor.character}`,
-            );
+            changes['cursorMoved'] = {
+              path: currentActiveFile.path,
+              cursor: {
+                line: currentCursor.line,
+                character: currentCursor.character,
+              },
+            };
           }
 
           const lastSelectedText = lastActiveFile.selectedText || '';
           const currentSelectedText = currentActiveFile.selectedText || '';
           if (lastSelectedText !== currentSelectedText) {
-            if (changeLines.length > 0) {
-              changeLines.push('');
-            }
-            changeLines.push('Selection changed:');
-            changeLines.push(`  Path: ${currentActiveFile.path}`);
-            if (currentSelectedText) {
-              changeLines.push('  Selected text:');
-              changeLines.push('```');
-              changeLines.push(currentSelectedText);
-              changeLines.push('```');
-            } else {
-              changeLines.push('  Selected text: (none)');
-            }
+            changes['selectionChanged'] = {
+              path: currentActiveFile.path,
+              selectedText: currentSelectedText,
+            };
           }
         }
       } else if (lastActiveFile) {
-        if (changeLines.length > 0) {
-          changeLines.push('');
-        }
-        changeLines.push('Active file changed:');
-        changeLines.push('  No active file');
-        changeLines.push(`  Previous path: ${lastActiveFile.path}`);
+        changes['activeFileChanged'] = {
+          path: null,
+          previousPath: lastActiveFile.path,
+        };
       }
 
-      if (changeLines.length === 0) {
+      if (Object.keys(changes).length === 0) {
         return { contextParts: [], newIdeContext: currentIdeContext };
       }
 
+      delta['changes'] = changes;
+      const jsonString = JSON.stringify(delta, null, 2);
       const contextParts = [
-        "Here is a summary of changes in the user's editor context. This is for your information only.",
-        changeLines.join('\n'),
+        "Here is a summary of changes in the user's editor context, in JSON format. This is for your information only.",
+        '```json',
+        jsonString,
+        '```',
       ];
 
       if (this.config.getDebugMode()) {
@@ -569,6 +542,11 @@ export class GeminiClient {
       }
     }
     if (!turn.pendingToolCalls.length && signal && !signal.aborted) {
+      // Check if next speaker check is needed
+      if (this.config.getQuotaErrorOccurred()) {
+        return turn;
+      }
+
       if (this.config.getSkipNextSpeakerCheck()) {
         return turn;
       }
@@ -624,11 +602,14 @@ export class GeminiClient {
       };
 
       const apiCall = () => {
-        currentAttemptModel = model;
+        const modelToUse = this.config.isInFallbackMode()
+          ? DEFAULT_GEMINI_FLASH_MODEL
+          : model;
+        currentAttemptModel = modelToUse;
 
         return this.getContentGeneratorOrFail().generateContent(
           {
-            model,
+            model: modelToUse,
             config: requestConfig,
             contents,
           },

packages/core/src/core/contentGenerator.test.ts

@@ -5,11 +5,7 @@
  */
 
 import { describe, it, expect, vi } from 'vitest';
-import {
-  createContentGenerator,
-  createContentGeneratorConfig,
-  AuthType,
-} from './contentGenerator.js';
+import { createContentGenerator, AuthType } from './contentGenerator.js';
 import { GoogleGenAI } from '@google/genai';
 import type { Config } from '../config/config.js';
 import { LoggingContentGenerator } from './loggingContentGenerator/index.js';
@@ -82,32 +78,3 @@ describe('createContentGenerator', () => {
     expect(generator).toBeInstanceOf(LoggingContentGenerator);
   });
 });
-
-describe('createContentGeneratorConfig', () => {
-  const mockConfig = {
-    getProxy: () => undefined,
-  } as unknown as Config;
-
-  it('should preserve provided fields and set authType for QWEN_OAUTH', () => {
-    const cfg = createContentGeneratorConfig(mockConfig, AuthType.QWEN_OAUTH, {
-      model: 'vision-model',
-      apiKey: 'QWEN_OAUTH_DYNAMIC_TOKEN',
-    });
-    expect(cfg.authType).toBe(AuthType.QWEN_OAUTH);
-    expect(cfg.model).toBe('vision-model');
-    expect(cfg.apiKey).toBe('QWEN_OAUTH_DYNAMIC_TOKEN');
-  });
-
-  it('should not warn or fallback for QWEN_OAUTH (resolution handled by ModelConfigResolver)', () => {
-    const warnSpy = vi
-      .spyOn(console, 'warn')
-      .mockImplementation(() => undefined);
-    const cfg = createContentGeneratorConfig(mockConfig, AuthType.QWEN_OAUTH, {
-      model: 'some-random-model',
-    });
-    expect(cfg.model).toBe('some-random-model');
-    expect(cfg.apiKey).toBeUndefined();
-    expect(warnSpy).not.toHaveBeenCalled();
-    warnSpy.mockRestore();
-  });
-});

packages/core/src/core/contentGenerator.ts

@@ -12,24 +12,9 @@ import type {
   GenerateContentParameters,
   GenerateContentResponse,
 } from '@google/genai';
+import { DEFAULT_QWEN_MODEL } from '../config/models.js';
 import type { Config } from '../config/config.js';
 import { LoggingContentGenerator } from './loggingContentGenerator/index.js';
-import type {
-  ConfigSource,
-  ConfigSourceKind,
-  ConfigSources,
-} from '../utils/configResolver.js';
-import {
-  getDefaultApiKeyEnvVar,
-  getDefaultModelEnvVar,
-  MissingAnthropicBaseUrlEnvError,
-  MissingApiKeyError,
-  MissingBaseUrlError,
-  MissingModelError,
-  StrictMissingCredentialsError,
-  StrictMissingModelIdError,
-} from '../models/modelConfigErrors.js';
-import { PROVIDER_SOURCED_FIELDS } from '../models/modelsConfig.js';
 
 /**
  * Interface abstracting the core functionalities for generating content and counting tokens.
@@ -63,7 +48,6 @@ export enum AuthType {
 export type ContentGeneratorConfig = {
   model: string;
   apiKey?: string;
-  apiKeyEnvKey?: string;
   baseUrl?: string;
   vertexai?: boolean;
   authType?: AuthType | undefined;
@@ -93,178 +77,102 @@ export type ContentGeneratorConfig = {
   schemaCompliance?: 'auto' | 'openapi_30';
 };
 
-// Keep the public ContentGeneratorConfigSources API, but reuse the generic
-// source-tracking types from utils/configResolver to avoid duplication.
-export type ContentGeneratorConfigSourceKind = ConfigSourceKind;
-export type ContentGeneratorConfigSource = ConfigSource;
-export type ContentGeneratorConfigSources = ConfigSources;
-
-export type ResolvedContentGeneratorConfig = {
-  config: ContentGeneratorConfig;
-  sources: ContentGeneratorConfigSources;
-};
-
-function setSource(
-  sources: ContentGeneratorConfigSources,
-  path: string,
-  source: ContentGeneratorConfigSource,
-): void {
-  sources[path] = source;
-}
-
-function getSeedSource(
-  seed: ContentGeneratorConfigSources | undefined,
-  path: string,
-): ContentGeneratorConfigSource | undefined {
-  return seed?.[path];
-}
-
-/**
- * Resolve ContentGeneratorConfig while tracking the source of each effective field.
- *
- * This function now primarily validates and finalizes the configuration that has
- * already been resolved by ModelConfigResolver. The env fallback logic has been
- * moved to the unified resolver to eliminate duplication.
- *
- * Note: The generationConfig passed here should already be fully resolved with
- * proper source tracking from the caller (CLI/SDK layer).
- */
-export function resolveContentGeneratorConfigWithSources(
-  config: Config,
-  authType: AuthType | undefined,
-  generationConfig?: Partial<ContentGeneratorConfig>,
-  seedSources?: ContentGeneratorConfigSources,
-  options?: { strictModelProvider?: boolean },
-): ResolvedContentGeneratorConfig {
-  const sources: ContentGeneratorConfigSources = { ...(seedSources || {}) };
-  const strictModelProvider = options?.strictModelProvider === true;
-
-  // Build config with computed fields
-  const newContentGeneratorConfig: Partial<ContentGeneratorConfig> = {
-    ...(generationConfig || {}),
-    authType,
-    proxy: config?.getProxy(),
-  };
-
-  // Set sources for computed fields
-  setSource(sources, 'authType', {
-    kind: 'computed',
-    detail: 'provided by caller',
-  });
-  if (config?.getProxy()) {
-    setSource(sources, 'proxy', {
-      kind: 'computed',
-      detail: 'Config.getProxy()',
-    });
-  }
-
-  // Preserve seed sources for fields that were passed in
-  const seedOrUnknown = (path: string): ContentGeneratorConfigSource =>
-    getSeedSource(seedSources, path) ?? { kind: 'unknown' };
-
-  for (const field of PROVIDER_SOURCED_FIELDS) {
-    if (generationConfig && field in generationConfig && !sources[field]) {
-      setSource(sources, field, seedOrUnknown(field));
-    }
-  }
-
-  // Validate required fields based on authType. This does not perform any
-  // fallback resolution (resolution is handled by ModelConfigResolver).
-  const validation = validateModelConfig(
-    newContentGeneratorConfig as ContentGeneratorConfig,
-    strictModelProvider,
-  );
-  if (!validation.valid) {
-    throw new Error(validation.errors.map((e) => e.message).join('\n'));
-  }
-
-  return {
-    config: newContentGeneratorConfig as ContentGeneratorConfig,
-    sources,
-  };
-}
-
-export interface ModelConfigValidationResult {
-  valid: boolean;
-  errors: Error[];
-}
-
-/**
- * Validate a resolved model configuration.
- * This is the single validation entry point used across Core.
- */
-export function validateModelConfig(
-  config: ContentGeneratorConfig,
-  isStrictModelProvider: boolean = false,
-): ModelConfigValidationResult {
-  const errors: Error[] = [];
-
-  // Qwen OAuth doesn't need validation - it uses dynamic tokens
-  if (config.authType === AuthType.QWEN_OAUTH) {
-    return { valid: true, errors: [] };
-  }
-
-  // API key is required for all other auth types
-  if (!config.apiKey) {
-    if (isStrictModelProvider) {
-      errors.push(
-        new StrictMissingCredentialsError(
-          config.authType,
-          config.model,
-          config.apiKeyEnvKey,
-        ),
-      );
-    } else {
-      const envKey =
-        config.apiKeyEnvKey || getDefaultApiKeyEnvVar(config.authType);
-      errors.push(
-        new MissingApiKeyError({
-          authType: config.authType,
-          model: config.model,
-          baseUrl: config.baseUrl,
-          envKey,
-        }),
-      );
-    }
-  }
-
-  // Model is required
-  if (!config.model) {
-    if (isStrictModelProvider) {
-      errors.push(new StrictMissingModelIdError(config.authType));
-    } else {
-      const envKey = getDefaultModelEnvVar(config.authType);
-      errors.push(new MissingModelError({ authType: config.authType, envKey }));
-    }
-  }
-
-  // Explicit baseUrl is required for Anthropic; Migrated from existing code.
-  if (config.authType === AuthType.USE_ANTHROPIC && !config.baseUrl) {
-    if (isStrictModelProvider) {
-      errors.push(
-        new MissingBaseUrlError({
-          authType: config.authType,
-          model: config.model,
-        }),
-      );
-    } else if (config.authType === AuthType.USE_ANTHROPIC) {
-      errors.push(new MissingAnthropicBaseUrlEnvError());
-    }
-  }
-
-  return { valid: errors.length === 0, errors };
-}
-
 export function createContentGeneratorConfig(
   config: Config,
   authType: AuthType | undefined,
   generationConfig?: Partial<ContentGeneratorConfig>,
 ): ContentGeneratorConfig {
-  return resolveContentGeneratorConfigWithSources(
-    config,
+  let newContentGeneratorConfig: Partial<ContentGeneratorConfig> = {
+    ...(generationConfig || {}),
     authType,
-    generationConfig,
-  ).config;
+    proxy: config?.getProxy(),
+  };
+
+  if (authType === AuthType.QWEN_OAUTH) {
+    // For Qwen OAuth, we'll handle the API key dynamically in createContentGenerator
+    // Set a special marker to indicate this is Qwen OAuth
+    return {
+      ...newContentGeneratorConfig,
+      model: DEFAULT_QWEN_MODEL,
+      apiKey: 'QWEN_OAUTH_DYNAMIC_TOKEN',
+    } as ContentGeneratorConfig;
+  }
+
+  if (authType === AuthType.USE_OPENAI) {
+    newContentGeneratorConfig = {
+      ...newContentGeneratorConfig,
+      apiKey: newContentGeneratorConfig.apiKey || process.env['OPENAI_API_KEY'],
+      baseUrl:
+        newContentGeneratorConfig.baseUrl || process.env['OPENAI_BASE_URL'],
+      model: newContentGeneratorConfig.model || process.env['OPENAI_MODEL'],
+    };
+
+    if (!newContentGeneratorConfig.apiKey) {
+      throw new Error('OPENAI_API_KEY environment variable not found.');
+    }
+
+    return {
+      ...newContentGeneratorConfig,
+      model: newContentGeneratorConfig?.model || 'qwen3-coder-plus',
+    } as ContentGeneratorConfig;
+  }
+
+  if (authType === AuthType.USE_ANTHROPIC) {
+    newContentGeneratorConfig = {
+      ...newContentGeneratorConfig,
+      apiKey:
+        newContentGeneratorConfig.apiKey || process.env['ANTHROPIC_API_KEY'],
+      baseUrl:
+        newContentGeneratorConfig.baseUrl || process.env['ANTHROPIC_BASE_URL'],
+      model: newContentGeneratorConfig.model || process.env['ANTHROPIC_MODEL'],
+    };
+
+    if (!newContentGeneratorConfig.apiKey) {
+      throw new Error('ANTHROPIC_API_KEY environment variable not found.');
+    }
+
+    if (!newContentGeneratorConfig.baseUrl) {
+      throw new Error('ANTHROPIC_BASE_URL environment variable not found.');
+    }
+
+    if (!newContentGeneratorConfig.model) {
+      throw new Error('ANTHROPIC_MODEL environment variable not found.');
+    }
+  }
+
+  if (authType === AuthType.USE_GEMINI) {
+    newContentGeneratorConfig = {
+      ...newContentGeneratorConfig,
+      apiKey: newContentGeneratorConfig.apiKey || process.env['GEMINI_API_KEY'],
+      model: newContentGeneratorConfig.model || process.env['GEMINI_MODEL'],
+    };
+
+    if (!newContentGeneratorConfig.apiKey) {
+      throw new Error('GEMINI_API_KEY environment variable not found.');
+    }
+
+    if (!newContentGeneratorConfig.model) {
+      throw new Error('GEMINI_MODEL environment variable not found.');
+    }
+  }
+
+  if (authType === AuthType.USE_VERTEX_AI) {
+    newContentGeneratorConfig = {
+      ...newContentGeneratorConfig,
+      apiKey: newContentGeneratorConfig.apiKey || process.env['GOOGLE_API_KEY'],
+      model: newContentGeneratorConfig.model || process.env['GOOGLE_MODEL'],
+    };
+
+    if (!newContentGeneratorConfig.apiKey) {
+      throw new Error('GOOGLE_API_KEY environment variable not found.');
+    }
+
+    if (!newContentGeneratorConfig.model) {
+      throw new Error('GOOGLE_MODEL environment variable not found.');
+    }
+  }
+
+  return newContentGeneratorConfig as ContentGeneratorConfig;
 }
 
 export async function createContentGenerator(
@@ -272,12 +180,11 @@ export async function createContentGenerator(
   gcConfig: Config,
   isInitialAuth?: boolean,
 ): Promise<ContentGenerator> {
-  const validation = validateModelConfig(config, false);
-  if (!validation.valid) {
-    throw new Error(validation.errors.map((e) => e.message).join('\n'));
-  }
-
   if (config.authType === AuthType.USE_OPENAI) {
+    if (!config.apiKey) {
+      throw new Error('OPENAI_API_KEY environment variable not found.');
+    }
+
     // Import OpenAIContentGenerator dynamically to avoid circular dependencies
     const { createOpenAIContentGenerator } = await import(
       './openaiContentGenerator/index.js'
@@ -316,6 +223,10 @@ export async function createContentGenerator(
   }
 
   if (config.authType === AuthType.USE_ANTHROPIC) {
+    if (!config.apiKey) {
+      throw new Error('ANTHROPIC_API_KEY environment variable not found.');
+    }
+
     const { createAnthropicContentGenerator } = await import(
       './anthropicContentGenerator/index.js'
     );

packages/core/src/core/coreToolScheduler.test.ts

@@ -240,7 +240,7 @@ describe('CoreToolScheduler', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -318,7 +318,7 @@ describe('CoreToolScheduler', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -497,7 +497,7 @@ describe('CoreToolScheduler', () => {
         getExcludeTools: () => ['write_file', 'edit', 'run_shell_command'],
         getContentGeneratorConfig: () => ({
           model: 'test-model',
-          authType: 'gemini',
+          authType: 'gemini-api-key',
         }),
         getShellExecutionConfig: () => ({
           terminalWidth: 90,
@@ -584,7 +584,7 @@ describe('CoreToolScheduler', () => {
         getExcludeTools: () => ['write_file', 'edit'], // Different excluded tools
         getContentGeneratorConfig: () => ({
           model: 'test-model',
-          authType: 'gemini',
+          authType: 'gemini-api-key',
         }),
         getShellExecutionConfig: () => ({
           terminalWidth: 90,
@@ -674,7 +674,7 @@ describe('CoreToolScheduler with payload', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1001,7 +1001,7 @@ describe('CoreToolScheduler edit cancellation', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1108,7 +1108,7 @@ describe('CoreToolScheduler YOLO mode', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1258,7 +1258,7 @@ describe('CoreToolScheduler cancellation during executing with live output', ()
       getApprovalMode: () => ApprovalMode.DEFAULT,
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getToolRegistry: () => mockToolRegistry,
       getShellExecutionConfig: () => ({
@@ -1350,7 +1350,7 @@ describe('CoreToolScheduler request queueing', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1482,7 +1482,7 @@ describe('CoreToolScheduler request queueing', () => {
       getToolRegistry: () => toolRegistry,
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 80,
@@ -1586,7 +1586,7 @@ describe('CoreToolScheduler request queueing', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1854,7 +1854,7 @@ describe('CoreToolScheduler Sequential Execution', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,
@@ -1975,7 +1975,7 @@ describe('CoreToolScheduler Sequential Execution', () => {
       getAllowedTools: () => [],
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,

packages/core/src/core/geminiChat.test.ts

@@ -20,6 +20,7 @@ import {
 } from './geminiChat.js';
 import type { Config } from '../config/config.js';
 import { setSimulate429 } from '../utils/testUtils.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
 import { AuthType } from './contentGenerator.js';
 import { type RetryOptions } from '../utils/retry.js';
 import { uiTelemetryService } from '../telemetry/uiTelemetry.js';
@@ -111,11 +112,15 @@ describe('GeminiChat', () => {
       getUsageStatisticsEnabled: () => true,
       getDebugMode: () => false,
       getContentGeneratorConfig: vi.fn().mockReturnValue({
-        authType: 'gemini', // Ensure this is set for fallback tests
+        authType: 'gemini-api-key', // Ensure this is set for fallback tests
         model: 'test-model',
       }),
       getModel: vi.fn().mockReturnValue('gemini-pro'),
       setModel: vi.fn(),
+      isInFallbackMode: vi.fn().mockReturnValue(false),
+      getQuotaErrorOccurred: vi.fn().mockReturnValue(false),
+      setQuotaErrorOccurred: vi.fn(),
+      flashFallbackHandler: undefined,
       getProjectRoot: vi.fn().mockReturnValue('/test/project/root'),
       getCliVersion: vi.fn().mockReturnValue('1.0.0'),
       storage: {
@@ -1344,8 +1349,9 @@ describe('GeminiChat', () => {
       ],
     } as unknown as GenerateContentResponse;
 
-    it('should pass the requested model through to generateContentStream', async () => {
+    it('should use the FLASH model when in fallback mode (sendMessageStream)', async () => {
       vi.mocked(mockConfig.getModel).mockReturnValue('gemini-pro');
+      vi.mocked(mockConfig.isInFallbackMode).mockReturnValue(true);
       vi.mocked(mockContentGenerator.generateContentStream).mockImplementation(
         async () =>
           (async function* () {
@@ -1364,7 +1370,7 @@ describe('GeminiChat', () => {
 
       expect(mockContentGenerator.generateContentStream).toHaveBeenCalledWith(
         expect.objectContaining({
-          model: 'test-model',
+          model: DEFAULT_GEMINI_FLASH_MODEL,
         }),
         'prompt-id-res3',
       );
@@ -1416,6 +1422,9 @@ describe('GeminiChat', () => {
         authType,
       });
 
+      const isInFallbackModeSpy = vi.spyOn(mockConfig, 'isInFallbackMode');
+      isInFallbackModeSpy.mockReturnValue(false);
+
       vi.mocked(mockContentGenerator.generateContentStream)
         .mockRejectedValueOnce(error429) // Attempt 1 fails
         .mockResolvedValueOnce(
@@ -1432,7 +1441,10 @@ describe('GeminiChat', () => {
           })(),
         );
 
-      mockHandleFallback.mockImplementation(async () => true);
+      mockHandleFallback.mockImplementation(async () => {
+        isInFallbackModeSpy.mockReturnValue(true);
+        return true; // Signal retry
+      });
 
       const stream = await chat.sendMessageStream(
         'test-model',

packages/core/src/core/geminiChat.ts

@@ -19,6 +19,10 @@ import type {
 import { ApiError, createUserContent } from '@google/genai';
 import { retryWithBackoff } from '../utils/retry.js';
 import type { Config } from '../config/config.js';
+import {
+  DEFAULT_GEMINI_FLASH_MODEL,
+  getEffectiveModel,
+} from '../config/models.js';
 import { hasCycleInSchema } from '../tools/tools.js';
 import type { StructuredError } from './turn.js';
 import {
@@ -348,15 +352,31 @@ export class GeminiChat {
     params: SendMessageParameters,
     prompt_id: string,
   ): Promise<AsyncGenerator<GenerateContentResponse>> {
-    const apiCall = () =>
-      this.config.getContentGenerator().generateContentStream(
+    const apiCall = () => {
+      const modelToUse = getEffectiveModel(
+        this.config.isInFallbackMode(),
+        model,
+      );
+
+      if (
+        this.config.getQuotaErrorOccurred() &&
+        modelToUse === DEFAULT_GEMINI_FLASH_MODEL
+      ) {
+        throw new Error(
+          'Please submit a new query to continue with the Flash model.',
+        );
+      }
+
+      return this.config.getContentGenerator().generateContentStream(
         {
-          model,
+          model: modelToUse,
           contents: requestContents,
           config: { ...this.generationConfig, ...params.config },
         },
         prompt_id,
       );
+    };
+
     const onPersistent429Callback = async (
       authType?: string,
       error?: unknown,

packages/core/src/core/nonInteractiveToolExecutor.test.ts

@@ -47,7 +47,7 @@ describe('executeToolCall', () => {
       getDebugMode: () => false,
       getContentGeneratorConfig: () => ({
         model: 'test-model',
-        authType: 'gemini',
+        authType: 'gemini-api-key',
       }),
       getShellExecutionConfig: () => ({
         terminalWidth: 90,

packages/core/src/core/openaiContentGenerator/converter.test.ts

@@ -207,27 +207,6 @@ describe('OpenAIContentConverter', () => {
         expect.objectContaining({ text: 'visible text' }),
       );
     });
-
-    it('should not throw when streaming chunk has no delta', () => {
-      const chunk = converter.convertOpenAIChunkToGemini({
-        object: 'chat.completion.chunk',
-        id: 'chunk-2',
-        created: 456,
-        choices: [
-          {
-            index: 0,
-            // Some OpenAI-compatible providers may omit delta entirely.
-            delta: undefined,
-            finish_reason: null,
-            logprobs: null,
-          },
-        ],
-        model: 'gpt-test',
-      } as unknown as OpenAI.Chat.ChatCompletionChunk);
-
-      const parts = chunk.candidates?.[0]?.content?.parts;
-      expect(parts).toEqual([]);
-    });
   });
 
   describe('convertGeminiToolsToOpenAI', () => {

packages/core/src/core/openaiContentGenerator/converter.ts

@@ -93,14 +93,6 @@ export class OpenAIContentConverter {
     this.schemaCompliance = schemaCompliance;
   }
 
-  /**
-   * Update the model used for response metadata (modelVersion/logging) and any
-   * model-specific conversion behavior.
-   */
-  setModel(model: string): void {
-    this.model = model;
-  }
-
   /**
    * Reset streaming tool calls parser for new stream processing
    * This should be called at the beginning of each stream to prevent
@@ -799,7 +791,7 @@ export class OpenAIContentConverter {
       const parts: Part[] = [];
 
       const reasoningText = (choice.delta as ExtendedCompletionChunkDelta)
-        ?.reasoning_content;
+        .reasoning_content;
       if (reasoningText) {
         parts.push({ text: reasoningText, thought: true });
       }

packages/core/src/core/openaiContentGenerator/pipeline.test.ts

@@ -46,7 +46,6 @@ describe('ContentGenerationPipeline', () => {
 
     // Mock converter
     mockConverter = {
-      setModel: vi.fn(),
       convertGeminiRequestToOpenAI: vi.fn(),
       convertOpenAIResponseToGemini: vi.fn(),
       convertOpenAIChunkToGemini: vi.fn(),
@@ -100,7 +99,6 @@ describe('ContentGenerationPipeline', () => {
   describe('constructor', () => {
     it('should initialize with correct configuration', () => {
       expect(mockProvider.buildClient).toHaveBeenCalled();
-      // Converter is constructed once and the model is updated per-request via setModel().
       expect(OpenAIContentConverter).toHaveBeenCalledWith(
         'test-model',
         undefined,
@@ -146,9 +144,6 @@ describe('ContentGenerationPipeline', () => {
 
       // Assert
       expect(result).toBe(mockGeminiResponse);
-      expect(
-        (mockConverter as unknown as { setModel: Mock }).setModel,
-      ).toHaveBeenCalledWith('test-model');
       expect(mockConverter.convertGeminiRequestToOpenAI).toHaveBeenCalledWith(
         request,
       );
@@ -169,53 +164,6 @@ describe('ContentGenerationPipeline', () => {
       );
     });
 
-    it('should ignore request.model override and always use configured model', async () => {
-      // Arrange
-      const request: GenerateContentParameters = {
-        model: 'override-model',
-        contents: [{ parts: [{ text: 'Hello' }], role: 'user' }],
-      };
-      const userPromptId = 'test-prompt-id';
-
-      const mockMessages = [
-        { role: 'user', content: 'Hello' },
-      ] as OpenAI.Chat.ChatCompletionMessageParam[];
-      const mockOpenAIResponse = {
-        id: 'response-id',
-        choices: [
-          { message: { content: 'Hello response' }, finish_reason: 'stop' },
-        ],
-        created: Date.now(),
-        model: 'override-model',
-      } as OpenAI.Chat.ChatCompletion;
-      const mockGeminiResponse = new GenerateContentResponse();
-
-      (mockConverter.convertGeminiRequestToOpenAI as Mock).mockReturnValue(
-        mockMessages,
-      );
-      (mockConverter.convertOpenAIResponseToGemini as Mock).mockReturnValue(
-        mockGeminiResponse,
-      );
-      (mockClient.chat.completions.create as Mock).mockResolvedValue(
-        mockOpenAIResponse,
-      );
-
-      // Act
-      const result = await pipeline.execute(request, userPromptId);
-
-      // Assert
-      expect(result).toBe(mockGeminiResponse);
-      expect(
-        (mockConverter as unknown as { setModel: Mock }).setModel,
-      ).toHaveBeenCalledWith('test-model');
-      expect(mockClient.chat.completions.create).toHaveBeenCalledWith(
-        expect.objectContaining({
-          model: 'test-model',
-        }),
-        expect.any(Object),
-      );
-    });
-
     it('should handle tools in request', async () => {
       // Arrange
       const request: GenerateContentParameters = {
@@ -269,9 +217,6 @@ describe('ContentGenerationPipeline', () => {
 
       // Assert
       expect(result).toBe(mockGeminiResponse);
-      expect(
-        (mockConverter as unknown as { setModel: Mock }).setModel,
-      ).toHaveBeenCalledWith('test-model');
       expect(mockConverter.convertGeminiToolsToOpenAI).toHaveBeenCalledWith(
         request.config!.tools,
       );

packages/core/src/core/openaiContentGenerator/pipeline.ts

@@ -40,16 +40,10 @@ export class ContentGenerationPipeline {
     request: GenerateContentParameters,
     userPromptId: string,
   ): Promise<GenerateContentResponse> {
-    // For OpenAI-compatible providers, the configured model is the single source of truth.
-    // We intentionally ignore request.model because upstream callers may pass a model string
-    // that is not valid/available for the OpenAI-compatible backend.
-    const effectiveModel = this.contentGeneratorConfig.model;
-    this.converter.setModel(effectiveModel);
     return this.executeWithErrorHandling(
       request,
       userPromptId,
       false,
-      effectiveModel,
       async (openaiRequest) => {
         const openaiResponse = (await this.client.chat.completions.create(
           openaiRequest,
@@ -70,13 +64,10 @@ export class ContentGenerationPipeline {
     request: GenerateContentParameters,
     userPromptId: string,
   ): Promise<AsyncGenerator<GenerateContentResponse>> {
-    const effectiveModel = this.contentGeneratorConfig.model;
-    this.converter.setModel(effectiveModel);
     return this.executeWithErrorHandling(
       request,
       userPromptId,
       true,
-      effectiveModel,
       async (openaiRequest, context) => {
         // Stage 1: Create OpenAI stream
         const stream = (await this.client.chat.completions.create(
@@ -233,13 +224,12 @@ export class ContentGenerationPipeline {
     request: GenerateContentParameters,
     userPromptId: string,
     streaming: boolean = false,
-    effectiveModel: string,
   ): Promise<OpenAI.Chat.ChatCompletionCreateParams> {
     const messages = this.converter.convertGeminiRequestToOpenAI(request);
 
     // Apply provider-specific enhancements
     const baseRequest: OpenAI.Chat.ChatCompletionCreateParams = {
-      model: effectiveModel,
+      model: this.contentGeneratorConfig.model,
       messages,
       ...this.buildGenerateContentConfig(request),
     };
@@ -352,24 +342,18 @@ export class ContentGenerationPipeline {
     request: GenerateContentParameters,
     userPromptId: string,
     isStreaming: boolean,
-    effectiveModel: string,
     executor: (
       openaiRequest: OpenAI.Chat.ChatCompletionCreateParams,
       context: RequestContext,
     ) => Promise<T>,
   ): Promise<T> {
-    const context = this.createRequestContext(
-      userPromptId,
-      isStreaming,
-      effectiveModel,
-    );
+    const context = this.createRequestContext(userPromptId, isStreaming);
 
     try {
       const openaiRequest = await this.buildRequest(
         request,
         userPromptId,
         isStreaming,
-        effectiveModel,
       );
 
       const result = await executor(openaiRequest, context);
@@ -401,11 +385,10 @@ export class ContentGenerationPipeline {
   private createRequestContext(
     userPromptId: string,
     isStreaming: boolean,
-    effectiveModel: string,
   ): RequestContext {
     return {
       userPromptId,
-      model: effectiveModel,
+      model: this.contentGeneratorConfig.model,
       authType: this.contentGeneratorConfig.authType || 'unknown',
       startTime: Date.now(),
       duration: 0,

packages/core/src/fallback/types.ts

@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Defines the intent returned by the UI layer during a fallback scenario.
+ */
+export type FallbackIntent =
+  | 'retry' // Immediately retry the current request with the fallback model.
+  | 'stop' // Switch to fallback for future requests, but stop the current request.
+  | 'auth'; // Stop the current request; user intends to change authentication.
+
+/**
+ * The interface for the handler provided by the UI layer (e.g., the CLI)
+ * to interact with the user during a fallback scenario.
+ */
+export type FallbackModelHandler = (
+  failedModel: string,
+  fallbackModel: string,
+  error?: unknown,
+) => Promise<FallbackIntent | null>;

packages/core/src/index.ts

@@ -9,30 +9,6 @@ export * from './config/config.js';
 export * from './output/types.js';
 export * from './output/json-formatter.js';
 
-// Export models
-export {
-  type ModelCapabilities,
-  type ModelGenerationConfig,
-  type ModelConfig as ProviderModelConfig,
-  type ModelProvidersConfig,
-  type ResolvedModelConfig,
-  type AvailableModel,
-  type ModelSwitchMetadata,
-  QWEN_OAUTH_MODELS,
-  ModelRegistry,
-  ModelsConfig,
-  type ModelsConfigOptions,
-  type OnModelChangeCallback,
-  // Model configuration resolver
-  resolveModelConfig,
-  validateModelConfig,
-  type ModelConfigSourcesInput,
-  type ModelConfigCliInput,
-  type ModelConfigSettingsInput,
-  type ModelConfigResolutionResult,
-  type ModelConfigValidationResult,
-} from './models/index.js';
-
 // Export Core Logic
 export * from './core/client.js';
 export * from './core/contentGenerator.js';
@@ -45,6 +21,8 @@ export * from './core/geminiRequest.js';
 export * from './core/coreToolScheduler.js';
 export * from './core/nonInteractiveToolExecutor.js';
 
+export * from './fallback/types.js';
+
 export * from './qwen/qwenOAuth2.js';
 
 // Export utilities
@@ -77,9 +55,6 @@ export * from './utils/projectSummary.js';
 export * from './utils/promptIdContext.js';
 export * from './utils/thoughtUtils.js';
 
-// Config resolution utilities
-export * from './utils/configResolver.js';
-
 // Export services
 export * from './services/fileDiscoveryService.js';
 export * from './services/gitService.js';

packages/core/src/models/constants.ts

@@ -1,134 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
-
-import type { ModelConfig } from './types.js';
-
-type AuthType = import('../core/contentGenerator.js').AuthType;
-type ContentGeneratorConfig =
-  import('../core/contentGenerator.js').ContentGeneratorConfig;
-
-/**
- * Field keys for model-scoped generation config.
- *
- * Kept in a small standalone module to avoid circular deps. The `import('...')`
- * usage is type-only and does not emit runtime imports.
- */
-export const MODEL_GENERATION_CONFIG_FIELDS = [
-  'samplingParams',
-  'timeout',
-  'maxRetries',
-  'disableCacheControl',
-  'schemaCompliance',
-  'reasoning',
-] as const satisfies ReadonlyArray<keyof ContentGeneratorConfig>;
-
-/**
- * Credential-related fields that are part of ContentGeneratorConfig
- * but not ModelGenerationConfig.
- */
-export const CREDENTIAL_FIELDS = [
-  'model',
-  'apiKey',
-  'apiKeyEnvKey',
-  'baseUrl',
-] as const satisfies ReadonlyArray<keyof ContentGeneratorConfig>;
-
-/**
- * All provider-sourced fields that need to be tracked for source attribution
- * and cleared when switching from provider to manual credentials.
- */
-export const PROVIDER_SOURCED_FIELDS = [
-  ...CREDENTIAL_FIELDS,
-  ...MODEL_GENERATION_CONFIG_FIELDS,
-] as const;
-
-/**
- * Environment variable mappings per authType.
- */
-export interface AuthEnvMapping {
-  apiKey: string[];
-  baseUrl: string[];
-  model: string[];
-}
-
-export const AUTH_ENV_MAPPINGS = {
-  openai: {
-    apiKey: ['OPENAI_API_KEY'],
-    baseUrl: ['OPENAI_BASE_URL'],
-    model: ['OPENAI_MODEL', 'QWEN_MODEL'],
-  },
-  anthropic: {
-    apiKey: ['ANTHROPIC_API_KEY'],
-    baseUrl: ['ANTHROPIC_BASE_URL'],
-    model: ['ANTHROPIC_MODEL'],
-  },
-  gemini: {
-    apiKey: ['GEMINI_API_KEY'],
-    baseUrl: [],
-    model: ['GEMINI_MODEL'],
-  },
-  'vertex-ai': {
-    apiKey: ['GOOGLE_API_KEY'],
-    baseUrl: [],
-    model: ['GOOGLE_MODEL'],
-  },
-  'qwen-oauth': {
-    apiKey: [],
-    baseUrl: [],
-    model: [],
-  },
-} as const satisfies Record<AuthType, AuthEnvMapping>;
-
-export const DEFAULT_MODELS = {
-  openai: 'qwen3-coder-plus',
-  'qwen-oauth': DEFAULT_QWEN_MODEL,
-} as Partial<Record<AuthType, string>>;
-
-export const QWEN_OAUTH_ALLOWED_MODELS = [
-  DEFAULT_QWEN_MODEL,
-  'vision-model',
-] as const;
-
-/**
- * Hard-coded Qwen OAuth models that are always available.
- * These cannot be overridden by user configuration.
- */
-export const QWEN_OAUTH_MODELS: ModelConfig[] = [
-  {
-    id: 'coder-model',
-    name: 'Qwen Coder',
-    description:
-      'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
-    capabilities: { vision: false },
-    generationConfig: {
-      samplingParams: {
-        temperature: 0.7,
-        top_p: 0.9,
-        max_tokens: 8192,
-      },
-      timeout: 60000,
-      maxRetries: 3,
-    },
-  },
-  {
-    id: 'vision-model',
-    name: 'Qwen Vision',
-    description:
-      'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)',
-    capabilities: { vision: true },
-    generationConfig: {
-      samplingParams: {
-        temperature: 0.7,
-        top_p: 0.9,
-        max_tokens: 8192,
-      },
-      timeout: 60000,
-      maxRetries: 3,
-    },
-  },
-];

packages/core/src/models/index.ts

@@ -1,44 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-export {
-  type ModelCapabilities,
-  type ModelGenerationConfig,
-  type ModelConfig,
-  type ModelProvidersConfig,
-  type ResolvedModelConfig,
-  type AvailableModel,
-  type ModelSwitchMetadata,
-} from './types.js';
-
-export { ModelRegistry } from './modelRegistry.js';
-
-export {
-  ModelsConfig,
-  type ModelsConfigOptions,
-  type OnModelChangeCallback,
-} from './modelsConfig.js';
-
-export {
-  AUTH_ENV_MAPPINGS,
-  CREDENTIAL_FIELDS,
-  DEFAULT_MODELS,
-  MODEL_GENERATION_CONFIG_FIELDS,
-  PROVIDER_SOURCED_FIELDS,
-  QWEN_OAUTH_ALLOWED_MODELS,
-  QWEN_OAUTH_MODELS,
-} from './constants.js';
-
-// Model configuration resolver
-export {
-  resolveModelConfig,
-  validateModelConfig,
-  type ModelConfigSourcesInput,
-  type ModelConfigCliInput,
-  type ModelConfigSettingsInput,
-  type ModelConfigResolutionResult,
-  type ModelConfigValidationResult,
-} from './modelConfigResolver.js';

packages/core/src/models/modelConfigErrors.ts

@@ -1,125 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-export function getDefaultApiKeyEnvVar(authType: string | undefined): string {
-  switch (authType) {
-    case 'openai':
-      return 'OPENAI_API_KEY';
-    case 'anthropic':
-      return 'ANTHROPIC_API_KEY';
-    case 'gemini':
-      return 'GEMINI_API_KEY';
-    case 'vertex-ai':
-      return 'GOOGLE_API_KEY';
-    default:
-      return 'API_KEY';
-  }
-}
-
-export function getDefaultModelEnvVar(authType: string | undefined): string {
-  switch (authType) {
-    case 'openai':
-      return 'OPENAI_MODEL';
-    case 'anthropic':
-      return 'ANTHROPIC_MODEL';
-    case 'gemini':
-      return 'GEMINI_MODEL';
-    case 'vertex-ai':
-      return 'GOOGLE_MODEL';
-    default:
-      return 'MODEL';
-  }
-}
-
-export abstract class ModelConfigError extends Error {
-  abstract readonly code: string;
-
-  protected constructor(message: string) {
-    super(message);
-    this.name = new.target.name;
-    Object.setPrototypeOf(this, new.target.prototype);
-  }
-}
-
-export class StrictMissingCredentialsError extends ModelConfigError {
-  readonly code = 'STRICT_MISSING_CREDENTIALS';
-
-  constructor(
-    authType: string | undefined,
-    model: string | undefined,
-    envKey?: string,
-  ) {
-    const providerKey = authType || '(unknown)';
-    const modelName = model || '(unknown)';
-    super(
-      `Missing credentials for modelProviders model '${modelName}'. ` +
-        (envKey
-          ? `Current configured envKey: '${envKey}'. Set that environment variable, or update modelProviders.${providerKey}[].envKey.`
-          : `Configure modelProviders.${providerKey}[].envKey and set that environment variable.`),
-    );
-  }
-}
-
-export class StrictMissingModelIdError extends ModelConfigError {
-  readonly code = 'STRICT_MISSING_MODEL_ID';
-
-  constructor(authType: string | undefined) {
-    super(
-      `Missing model id for strict modelProviders resolution (authType: ${authType}).`,
-    );
-  }
-}
-
-export class MissingApiKeyError extends ModelConfigError {
-  readonly code = 'MISSING_API_KEY';
-
-  constructor(params: {
-    authType: string | undefined;
-    model: string | undefined;
-    baseUrl: string | undefined;
-    envKey: string;
-  }) {
-    super(
-      `Missing API key for ${params.authType} auth. ` +
-        `Current model: '${params.model || '(unknown)'}', baseUrl: '${params.baseUrl || '(default)'}'. ` +
-        `Provide an API key via settings (security.auth.apiKey), ` +
-        `or set the environment variable '${params.envKey}'.`,
-    );
-  }
-}
-
-export class MissingModelError extends ModelConfigError {
-  readonly code = 'MISSING_MODEL';
-
-  constructor(params: { authType: string | undefined; envKey: string }) {
-    super(
-      `Missing model for ${params.authType} auth. ` +
-        `Set the environment variable '${params.envKey}'.`,
-    );
-  }
-}
-
-export class MissingBaseUrlError extends ModelConfigError {
-  readonly code = 'MISSING_BASE_URL';
-
-  constructor(params: {
-    authType: string | undefined;
-    model: string | undefined;
-  }) {
-    super(
-      `Missing baseUrl for modelProviders model '${params.model || '(unknown)'}'. ` +
-        `Configure modelProviders.${params.authType || '(unknown)'}[].baseUrl.`,
-    );
-  }
-}
-
-export class MissingAnthropicBaseUrlEnvError extends ModelConfigError {
-  readonly code = 'MISSING_ANTHROPIC_BASE_URL_ENV';
-
-  constructor() {
-    super('ANTHROPIC_BASE_URL environment variable not found.');
-  }
-}

packages/core/src/models/modelConfigResolver.test.ts

@@ -1,355 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, it, expect } from 'vitest';
-import {
-  resolveModelConfig,
-  validateModelConfig,
-} from './modelConfigResolver.js';
-import { AuthType } from '../core/contentGenerator.js';
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
-
-describe('modelConfigResolver', () => {
-  describe('resolveModelConfig', () => {
-    describe('OpenAI auth type', () => {
-      it('resolves from CLI with highest priority', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {
-            model: 'cli-model',
-            apiKey: 'cli-key',
-            baseUrl: 'https://cli.example.com',
-          },
-          settings: {
-            model: 'settings-model',
-            apiKey: 'settings-key',
-            baseUrl: 'https://settings.example.com',
-          },
-          env: {
-            OPENAI_MODEL: 'env-model',
-            OPENAI_API_KEY: 'env-key',
-            OPENAI_BASE_URL: 'https://env.example.com',
-          },
-        });
-
-        expect(result.config.model).toBe('cli-model');
-        expect(result.config.apiKey).toBe('cli-key');
-        expect(result.config.baseUrl).toBe('https://cli.example.com');
-
-        expect(result.sources['model'].kind).toBe('cli');
-        expect(result.sources['apiKey'].kind).toBe('cli');
-        expect(result.sources['baseUrl'].kind).toBe('cli');
-      });
-
-      it('falls back to env when CLI not provided', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {
-            model: 'settings-model',
-          },
-          env: {
-            OPENAI_MODEL: 'env-model',
-            OPENAI_API_KEY: 'env-key',
-          },
-        });
-
-        expect(result.config.model).toBe('env-model');
-        expect(result.config.apiKey).toBe('env-key');
-
-        expect(result.sources['model'].kind).toBe('env');
-        expect(result.sources['apiKey'].kind).toBe('env');
-      });
-
-      it('falls back to settings when env not provided', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {
-            model: 'settings-model',
-            apiKey: 'settings-key',
-            baseUrl: 'https://settings.example.com',
-          },
-          env: {},
-        });
-
-        expect(result.config.model).toBe('settings-model');
-        expect(result.config.apiKey).toBe('settings-key');
-        expect(result.config.baseUrl).toBe('https://settings.example.com');
-
-        expect(result.sources['model'].kind).toBe('settings');
-        expect(result.sources['apiKey'].kind).toBe('settings');
-        expect(result.sources['baseUrl'].kind).toBe('settings');
-      });
-
-      it('uses default model when nothing provided', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {},
-          env: {
-            OPENAI_API_KEY: 'some-key', // need key to be valid
-          },
-        });
-
-        expect(result.config.model).toBe('qwen3-coder-plus');
-        expect(result.sources['model'].kind).toBe('default');
-      });
-
-      it('prioritizes modelProvider over CLI', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {
-            model: 'cli-model',
-          },
-          settings: {},
-          env: {
-            MY_CUSTOM_KEY: 'provider-key',
-          },
-          modelProvider: {
-            id: 'provider-model',
-            name: 'Provider Model',
-            authType: AuthType.USE_OPENAI,
-            envKey: 'MY_CUSTOM_KEY',
-            baseUrl: 'https://provider.example.com',
-            generationConfig: {},
-            capabilities: {},
-          },
-        });
-
-        expect(result.config.model).toBe('provider-model');
-        expect(result.config.apiKey).toBe('provider-key');
-        expect(result.config.baseUrl).toBe('https://provider.example.com');
-
-        expect(result.sources['model'].kind).toBe('modelProviders');
-        expect(result.sources['apiKey'].kind).toBe('env');
-        expect(result.sources['apiKey'].via?.kind).toBe('modelProviders');
-      });
-
-      it('reads QWEN_MODEL as fallback for OPENAI_MODEL', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {},
-          env: {
-            QWEN_MODEL: 'qwen-model',
-            OPENAI_API_KEY: 'key',
-          },
-        });
-
-        expect(result.config.model).toBe('qwen-model');
-        expect(result.sources['model'].envKey).toBe('QWEN_MODEL');
-      });
-    });
-
-    describe('Qwen OAuth auth type', () => {
-      it('uses default model for Qwen OAuth', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.QWEN_OAUTH,
-          cli: {},
-          settings: {},
-          env: {},
-        });
-
-        expect(result.config.model).toBe(DEFAULT_QWEN_MODEL);
-        expect(result.config.apiKey).toBe('QWEN_OAUTH_DYNAMIC_TOKEN');
-        expect(result.sources['apiKey'].kind).toBe('computed');
-      });
-
-      it('allows vision-model for Qwen OAuth', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.QWEN_OAUTH,
-          cli: {
-            model: 'vision-model',
-          },
-          settings: {},
-          env: {},
-        });
-
-        expect(result.config.model).toBe('vision-model');
-        expect(result.sources['model'].kind).toBe('cli');
-      });
-
-      it('warns and falls back for unsupported Qwen OAuth models', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.QWEN_OAUTH,
-          cli: {
-            model: 'unsupported-model',
-          },
-          settings: {},
-          env: {},
-        });
-
-        expect(result.config.model).toBe(DEFAULT_QWEN_MODEL);
-        expect(result.warnings).toHaveLength(1);
-        expect(result.warnings[0]).toContain('unsupported-model');
-      });
-    });
-
-    describe('Anthropic auth type', () => {
-      it('resolves Anthropic config from env', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_ANTHROPIC,
-          cli: {},
-          settings: {},
-          env: {
-            ANTHROPIC_API_KEY: 'anthropic-key',
-            ANTHROPIC_BASE_URL: 'https://anthropic.example.com',
-            ANTHROPIC_MODEL: 'claude-3',
-          },
-        });
-
-        expect(result.config.model).toBe('claude-3');
-        expect(result.config.apiKey).toBe('anthropic-key');
-        expect(result.config.baseUrl).toBe('https://anthropic.example.com');
-      });
-    });
-
-    describe('generation config resolution', () => {
-      it('merges generation config from settings', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {
-            apiKey: 'key',
-            generationConfig: {
-              timeout: 60000,
-              maxRetries: 5,
-              samplingParams: {
-                temperature: 0.7,
-              },
-            },
-          },
-          env: {},
-        });
-
-        expect(result.config.timeout).toBe(60000);
-        expect(result.config.maxRetries).toBe(5);
-        expect(result.config.samplingParams?.temperature).toBe(0.7);
-
-        expect(result.sources['timeout'].kind).toBe('settings');
-        expect(result.sources['samplingParams'].kind).toBe('settings');
-      });
-
-      it('modelProvider config overrides settings', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: {
-            generationConfig: {
-              timeout: 30000,
-            },
-          },
-          env: {
-            MY_KEY: 'key',
-          },
-          modelProvider: {
-            id: 'model',
-            name: 'Model',
-            authType: AuthType.USE_OPENAI,
-            envKey: 'MY_KEY',
-            baseUrl: 'https://api.example.com',
-            generationConfig: {
-              timeout: 60000,
-            },
-            capabilities: {},
-          },
-        });
-
-        expect(result.config.timeout).toBe(60000);
-        expect(result.sources['timeout'].kind).toBe('modelProviders');
-      });
-    });
-
-    describe('proxy handling', () => {
-      it('includes proxy in config when provided', () => {
-        const result = resolveModelConfig({
-          authType: AuthType.USE_OPENAI,
-          cli: {},
-          settings: { apiKey: 'key' },
-          env: {},
-          proxy: 'http://proxy.example.com:8080',
-        });
-
-        expect(result.config.proxy).toBe('http://proxy.example.com:8080');
-        expect(result.sources['proxy'].kind).toBe('computed');
-      });
-    });
-  });
-
-  describe('validateModelConfig', () => {
-    it('passes for valid OpenAI config', () => {
-      const result = validateModelConfig({
-        authType: AuthType.USE_OPENAI,
-        model: 'gpt-4',
-        apiKey: 'sk-xxx',
-      });
-
-      expect(result.valid).toBe(true);
-      expect(result.errors).toHaveLength(0);
-    });
-
-    it('fails when API key missing', () => {
-      const result = validateModelConfig({
-        authType: AuthType.USE_OPENAI,
-        model: 'gpt-4',
-      });
-
-      expect(result.valid).toBe(false);
-      expect(result.errors).toHaveLength(1);
-      expect(result.errors[0].message).toContain('Missing API key');
-    });
-
-    it('fails when model missing', () => {
-      const result = validateModelConfig({
-        authType: AuthType.USE_OPENAI,
-        model: '',
-        apiKey: 'sk-xxx',
-      });
-
-      expect(result.valid).toBe(false);
-      expect(result.errors).toHaveLength(1);
-      expect(result.errors[0].message).toContain('Missing model');
-    });
-
-    it('always passes for Qwen OAuth', () => {
-      const result = validateModelConfig({
-        authType: AuthType.QWEN_OAUTH,
-        model: DEFAULT_QWEN_MODEL,
-        apiKey: 'QWEN_OAUTH_DYNAMIC_TOKEN',
-      });
-
-      expect(result.valid).toBe(true);
-    });
-
-    it('requires baseUrl for Anthropic', () => {
-      const result = validateModelConfig({
-        authType: AuthType.USE_ANTHROPIC,
-        model: 'claude-3',
-        apiKey: 'key',
-        // missing baseUrl
-      });
-
-      expect(result.valid).toBe(false);
-      expect(result.errors[0].message).toContain('ANTHROPIC_BASE_URL');
-    });
-
-    it('uses strict error messages for modelProvider', () => {
-      const result = validateModelConfig(
-        {
-          authType: AuthType.USE_OPENAI,
-          model: 'my-model',
-          // missing apiKey
-        },
-        true, // isStrictModelProvider
-      );
-
-      expect(result.valid).toBe(false);
-      expect(result.errors[0].message).toContain('modelProviders');
-      expect(result.errors[0].message).toContain('envKey');
-    });
-  });
-});

packages/core/src/models/modelConfigResolver.ts

@@ -1,364 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * ModelConfigResolver - Unified resolver for model-related configuration.
- *
- * This module consolidates all model configuration resolution logic,
- * eliminating duplicate code between CLI and Core layers.
- *
- * Configuration priority (highest to lowest):
- * 1. modelProvider - Explicit selection from ModelProviders config
- * 2. CLI arguments - Command line flags (--model, --openaiApiKey, etc.)
- * 3. Environment variables - OPENAI_API_KEY, OPENAI_MODEL, etc.
- * 4. Settings - User/workspace settings file
- * 5. Defaults - Built-in default values
- */
-
-import { AuthType } from '../core/contentGenerator.js';
-import type { ContentGeneratorConfig } from '../core/contentGenerator.js';
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
-import {
-  resolveField,
-  resolveOptionalField,
-  layer,
-  envLayer,
-  cliSource,
-  settingsSource,
-  modelProvidersSource,
-  defaultSource,
-  computedSource,
-  type ConfigSource,
-  type ConfigSources,
-  type ConfigLayer,
-} from '../utils/configResolver.js';
-import {
-  AUTH_ENV_MAPPINGS,
-  DEFAULT_MODELS,
-  QWEN_OAUTH_ALLOWED_MODELS,
-  MODEL_GENERATION_CONFIG_FIELDS,
-} from './constants.js';
-import type { ResolvedModelConfig } from './types.js';
-export {
-  validateModelConfig,
-  type ModelConfigValidationResult,
-} from '../core/contentGenerator.js';
-
-/**
- * CLI-provided configuration values
- */
-export interface ModelConfigCliInput {
-  model?: string;
-  apiKey?: string;
-  baseUrl?: string;
-}
-
-/**
- * Settings-provided configuration values
- */
-export interface ModelConfigSettingsInput {
-  /** Model name from settings.model.name */
-  model?: string;
-  /** API key from settings.security.auth.apiKey */
-  apiKey?: string;
-  /** Base URL from settings.security.auth.baseUrl */
-  baseUrl?: string;
-  /** Generation config from settings.model.generationConfig */
-  generationConfig?: Partial<ContentGeneratorConfig>;
-}
-
-/**
- * All input sources for model configuration resolution
- */
-export interface ModelConfigSourcesInput {
-  /** Authentication type */
-  authType?: AuthType;
-
-  /** CLI arguments (highest priority for user-provided values) */
-  cli?: ModelConfigCliInput;
-
-  /** Settings file configuration */
-  settings?: ModelConfigSettingsInput;
-
-  /** Environment variables (injected for testability) */
-  env: Record<string, string | undefined>;
-
-  /** Resolved model from ModelProviders (explicit selection, highest priority) */
-  modelProvider?: ResolvedModelConfig;
-
-  /** Proxy URL (computed from Config) */
-  proxy?: string;
-}
-
-/**
- * Result of model configuration resolution
- */
-export interface ModelConfigResolutionResult {
-  /** The fully resolved configuration */
-  config: ContentGeneratorConfig;
-  /** Source attribution for each field */
-  sources: ConfigSources;
-  /** Warnings generated during resolution */
-  warnings: string[];
-}
-
-/**
- * Resolve model configuration from all input sources.
- *
- * This is the single entry point for model configuration resolution.
- * It replaces the duplicate logic in:
- * - packages/cli/src/utils/modelProviderUtils.ts (resolveCliGenerationConfig)
- * - packages/core/src/core/contentGenerator.ts (resolveContentGeneratorConfigWithSources)
- *
- * @param input - All configuration sources
- * @returns Resolved configuration with source tracking
- */
-export function resolveModelConfig(
-  input: ModelConfigSourcesInput,
-): ModelConfigResolutionResult {
-  const { authType, cli, settings, env, modelProvider, proxy } = input;
-  const warnings: string[] = [];
-  const sources: ConfigSources = {};
-
-  // Special handling for Qwen OAuth
-  if (authType === AuthType.QWEN_OAUTH) {
-    return resolveQwenOAuthConfig(input, warnings);
-  }
-
-  // Get auth-specific env var mappings.
-  // If authType is not provided, do not read any auth env vars.
-  const envMapping = authType
-    ? AUTH_ENV_MAPPINGS[authType]
-    : { model: [], apiKey: [], baseUrl: [] };
-
-  // Build layers for each field in priority order
-  // Priority: modelProvider > cli > env > settings > default
-
-  // ---- Model ----
-  const modelLayers: Array<ConfigLayer<string>> = [];
-
-  if (authType && modelProvider) {
-    modelLayers.push(
-      layer(
-        modelProvider.id,
-        modelProvidersSource(authType, modelProvider.id, 'model.id'),
-      ),
-    );
-  }
-  if (cli?.model) {
-    modelLayers.push(layer(cli.model, cliSource('--model')));
-  }
-  for (const envKey of envMapping.model) {
-    modelLayers.push(envLayer(env, envKey));
-  }
-  if (settings?.model) {
-    modelLayers.push(layer(settings.model, settingsSource('model.name')));
-  }
-
-  const defaultModel = authType ? DEFAULT_MODELS[authType] : '';
-  const modelResult = resolveField(
-    modelLayers,
-    defaultModel,
-    defaultSource(defaultModel),
-  );
-  sources['model'] = modelResult.source;
-
-  // ---- API Key ----
-  const apiKeyLayers: Array<ConfigLayer<string>> = [];
-
-  // For modelProvider, read from the specified envKey
-  if (authType && modelProvider?.envKey) {
-    const apiKeyFromEnv = env[modelProvider.envKey];
-    if (apiKeyFromEnv) {
-      apiKeyLayers.push(
-        layer(apiKeyFromEnv, {
-          kind: 'env',
-          envKey: modelProvider.envKey,
-          via: modelProvidersSource(authType, modelProvider.id, 'envKey'),
-        }),
-      );
-    }
-  }
-  if (cli?.apiKey) {
-    apiKeyLayers.push(layer(cli.apiKey, cliSource('--openaiApiKey')));
-  }
-  for (const envKey of envMapping.apiKey) {
-    apiKeyLayers.push(envLayer(env, envKey));
-  }
-  if (settings?.apiKey) {
-    apiKeyLayers.push(
-      layer(settings.apiKey, settingsSource('security.auth.apiKey')),
-    );
-  }
-
-  const apiKeyResult = resolveOptionalField(apiKeyLayers);
-  if (apiKeyResult) {
-    sources['apiKey'] = apiKeyResult.source;
-  }
-
-  // ---- Base URL ----
-  const baseUrlLayers: Array<ConfigLayer<string>> = [];
-
-  if (authType && modelProvider?.baseUrl) {
-    baseUrlLayers.push(
-      layer(
-        modelProvider.baseUrl,
-        modelProvidersSource(authType, modelProvider.id, 'baseUrl'),
-      ),
-    );
-  }
-  if (cli?.baseUrl) {
-    baseUrlLayers.push(layer(cli.baseUrl, cliSource('--openaiBaseUrl')));
-  }
-  for (const envKey of envMapping.baseUrl) {
-    baseUrlLayers.push(envLayer(env, envKey));
-  }
-  if (settings?.baseUrl) {
-    baseUrlLayers.push(
-      layer(settings.baseUrl, settingsSource('security.auth.baseUrl')),
-    );
-  }
-
-  const baseUrlResult = resolveOptionalField(baseUrlLayers);
-  if (baseUrlResult) {
-    sources['baseUrl'] = baseUrlResult.source;
-  }
-
-  // ---- API Key Env Key (for error messages) ----
-  let apiKeyEnvKey: string | undefined;
-  if (authType && modelProvider?.envKey) {
-    apiKeyEnvKey = modelProvider.envKey;
-    sources['apiKeyEnvKey'] = modelProvidersSource(
-      authType,
-      modelProvider.id,
-      'envKey',
-    );
-  }
-
-  // ---- Generation Config (from settings or modelProvider) ----
-  const generationConfig = resolveGenerationConfig(
-    settings?.generationConfig,
-    modelProvider?.generationConfig,
-    authType,
-    modelProvider?.id,
-    sources,
-  );
-
-  // Build final config
-  const config: ContentGeneratorConfig = {
-    authType,
-    model: modelResult.value || '',
-    apiKey: apiKeyResult?.value,
-    apiKeyEnvKey,
-    baseUrl: baseUrlResult?.value,
-    proxy,
-    ...generationConfig,
-  };
-
-  // Add proxy source
-  if (proxy) {
-    sources['proxy'] = computedSource('Config.getProxy()');
-  }
-
-  // Add authType source
-  sources['authType'] = computedSource('provided by caller');
-
-  return { config, sources, warnings };
-}
-
-/**
- * Special resolver for Qwen OAuth authentication.
- * Qwen OAuth has fixed model options and uses dynamic tokens.
- */
-function resolveQwenOAuthConfig(
-  input: ModelConfigSourcesInput,
-  warnings: string[],
-): ModelConfigResolutionResult {
-  const { cli, settings, proxy } = input;
-  const sources: ConfigSources = {};
-
-  // Qwen OAuth only allows specific models
-  const allowedModels = new Set<string>(QWEN_OAUTH_ALLOWED_MODELS);
-
-  // Determine requested model
-  const requestedModel = cli?.model || settings?.model;
-  let resolvedModel: string;
-  let modelSource: ConfigSource;
-
-  if (requestedModel && allowedModels.has(requestedModel)) {
-    resolvedModel = requestedModel;
-    modelSource = cli?.model
-      ? cliSource('--model')
-      : settingsSource('model.name');
-  } else {
-    if (requestedModel) {
-      warnings.push(
-        `Unsupported Qwen OAuth model '${requestedModel}', falling back to '${DEFAULT_QWEN_MODEL}'.`,
-      );
-    }
-    resolvedModel = DEFAULT_QWEN_MODEL;
-    modelSource = defaultSource(`fallback to '${DEFAULT_QWEN_MODEL}'`);
-  }
-
-  sources['model'] = modelSource;
-  sources['apiKey'] = computedSource('Qwen OAuth dynamic token');
-  sources['authType'] = computedSource('provided by caller');
-
-  if (proxy) {
-    sources['proxy'] = computedSource('Config.getProxy()');
-  }
-
-  // Resolve generation config from settings
-  const generationConfig = resolveGenerationConfig(
-    settings?.generationConfig,
-    undefined,
-    AuthType.QWEN_OAUTH,
-    resolvedModel,
-    sources,
-  );
-
-  const config: ContentGeneratorConfig = {
-    authType: AuthType.QWEN_OAUTH,
-    model: resolvedModel,
-    apiKey: 'QWEN_OAUTH_DYNAMIC_TOKEN',
-    proxy,
-    ...generationConfig,
-  };
-
-  return { config, sources, warnings };
-}
-
-/**
- * Resolve generation config fields (samplingParams, timeout, etc.)
- */
-function resolveGenerationConfig(
-  settingsConfig: Partial<ContentGeneratorConfig> | undefined,
-  modelProviderConfig: Partial<ContentGeneratorConfig> | undefined,
-  authType: AuthType | undefined,
-  modelId: string | undefined,
-  sources: ConfigSources,
-): Partial<ContentGeneratorConfig> {
-  const result: Partial<ContentGeneratorConfig> = {};
-
-  for (const field of MODEL_GENERATION_CONFIG_FIELDS) {
-    // ModelProvider config takes priority
-    if (authType && modelProviderConfig && field in modelProviderConfig) {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      (result as any)[field] = modelProviderConfig[field];
-      sources[field] = modelProvidersSource(
-        authType,
-        modelId || '',
-        `generationConfig.${field}`,
-      );
-    } else if (settingsConfig && field in settingsConfig) {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      (result as any)[field] = settingsConfig[field];
-      sources[field] = settingsSource(`model.generationConfig.${field}`);
-    }
-  }
-
-  return result;
-}

packages/core/src/models/modelRegistry.test.ts

@@ -1,388 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, it, expect, beforeEach, vi } from 'vitest';
-import { ModelRegistry, QWEN_OAUTH_MODELS } from './modelRegistry.js';
-import { AuthType } from '../core/contentGenerator.js';
-import type { ModelProvidersConfig } from './types.js';
-
-describe('ModelRegistry', () => {
-  describe('initialization', () => {
-    it('should always include hard-coded qwen-oauth models', () => {
-      const registry = new ModelRegistry();
-
-      const qwenModels = registry.getModelsForAuthType(AuthType.QWEN_OAUTH);
-      expect(qwenModels.length).toBe(QWEN_OAUTH_MODELS.length);
-      expect(qwenModels[0].id).toBe('coder-model');
-      expect(qwenModels[1].id).toBe('vision-model');
-    });
-
-    it('should initialize with empty config', () => {
-      const registry = new ModelRegistry();
-      expect(registry.getModelsForAuthType(AuthType.QWEN_OAUTH).length).toBe(
-        QWEN_OAUTH_MODELS.length,
-      );
-      expect(registry.getModelsForAuthType(AuthType.USE_OPENAI).length).toBe(0);
-    });
-
-    it('should initialize with custom models config', () => {
-      const modelProvidersConfig: ModelProvidersConfig = {
-        openai: [
-          {
-            id: 'gpt-4-turbo',
-            name: 'GPT-4 Turbo',
-            baseUrl: 'https://api.openai.com/v1',
-          },
-        ],
-      };
-
-      const registry = new ModelRegistry(modelProvidersConfig);
-
-      const openaiModels = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(openaiModels.length).toBe(1);
-      expect(openaiModels[0].id).toBe('gpt-4-turbo');
-    });
-
-    it('should ignore qwen-oauth models in config (hard-coded)', () => {
-      const modelProvidersConfig: ModelProvidersConfig = {
-        'qwen-oauth': [
-          {
-            id: 'custom-qwen',
-            name: 'Custom Qwen',
-          },
-        ],
-      };
-
-      const registry = new ModelRegistry(modelProvidersConfig);
-
-      // Should still use hard-coded qwen-oauth models
-      const qwenModels = registry.getModelsForAuthType(AuthType.QWEN_OAUTH);
-      expect(qwenModels.length).toBe(QWEN_OAUTH_MODELS.length);
-      expect(qwenModels.find((m) => m.id === 'custom-qwen')).toBeUndefined();
-    });
-  });
-
-  describe('getModelsForAuthType', () => {
-    let registry: ModelRegistry;
-
-    beforeEach(() => {
-      const modelProvidersConfig: ModelProvidersConfig = {
-        openai: [
-          {
-            id: 'gpt-4-turbo',
-            name: 'GPT-4 Turbo',
-            description: 'Most capable GPT-4',
-            baseUrl: 'https://api.openai.com/v1',
-            capabilities: { vision: true },
-          },
-          {
-            id: 'gpt-3.5-turbo',
-            name: 'GPT-3.5 Turbo',
-            capabilities: { vision: false },
-          },
-        ],
-      };
-      registry = new ModelRegistry(modelProvidersConfig);
-    });
-
-    it('should return models for existing authType', () => {
-      const models = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(models.length).toBe(2);
-    });
-
-    it('should return empty array for non-existent authType', () => {
-      const models = registry.getModelsForAuthType(AuthType.USE_VERTEX_AI);
-      expect(models.length).toBe(0);
-    });
-
-    it('should return AvailableModel format with correct fields', () => {
-      const models = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      const gpt4 = models.find((m) => m.id === 'gpt-4-turbo');
-
-      expect(gpt4).toBeDefined();
-      expect(gpt4?.label).toBe('GPT-4 Turbo');
-      expect(gpt4?.description).toBe('Most capable GPT-4');
-      expect(gpt4?.isVision).toBe(true);
-      expect(gpt4?.authType).toBe(AuthType.USE_OPENAI);
-    });
-  });
-
-  describe('getModel', () => {
-    let registry: ModelRegistry;
-
-    beforeEach(() => {
-      const modelProvidersConfig: ModelProvidersConfig = {
-        openai: [
-          {
-            id: 'gpt-4-turbo',
-            name: 'GPT-4 Turbo',
-            baseUrl: 'https://api.openai.com/v1',
-            generationConfig: {
-              samplingParams: {
-                temperature: 0.8,
-                max_tokens: 4096,
-              },
-            },
-          },
-        ],
-      };
-      registry = new ModelRegistry(modelProvidersConfig);
-    });
-
-    it('should return resolved model config', () => {
-      const model = registry.getModel(AuthType.USE_OPENAI, 'gpt-4-turbo');
-
-      expect(model).toBeDefined();
-      expect(model?.id).toBe('gpt-4-turbo');
-      expect(model?.name).toBe('GPT-4 Turbo');
-      expect(model?.authType).toBe(AuthType.USE_OPENAI);
-      expect(model?.baseUrl).toBe('https://api.openai.com/v1');
-    });
-
-    it('should preserve generationConfig without applying defaults', () => {
-      const model = registry.getModel(AuthType.USE_OPENAI, 'gpt-4-turbo');
-
-      expect(model?.generationConfig.samplingParams?.temperature).toBe(0.8);
-      expect(model?.generationConfig.samplingParams?.max_tokens).toBe(4096);
-      // No defaults are applied - only the configured values are present
-      expect(model?.generationConfig.samplingParams?.top_p).toBeUndefined();
-      expect(model?.generationConfig.timeout).toBeUndefined();
-    });
-
-    it('should return undefined for non-existent model', () => {
-      const model = registry.getModel(AuthType.USE_OPENAI, 'non-existent');
-      expect(model).toBeUndefined();
-    });
-
-    it('should return undefined for non-existent authType', () => {
-      const model = registry.getModel(AuthType.USE_VERTEX_AI, 'some-model');
-      expect(model).toBeUndefined();
-    });
-  });
-
-  describe('hasModel', () => {
-    let registry: ModelRegistry;
-
-    beforeEach(() => {
-      registry = new ModelRegistry({
-        openai: [{ id: 'gpt-4', name: 'GPT-4' }],
-      });
-    });
-
-    it('should return true for existing model', () => {
-      expect(registry.hasModel(AuthType.USE_OPENAI, 'gpt-4')).toBe(true);
-    });
-
-    it('should return false for non-existent model', () => {
-      expect(registry.hasModel(AuthType.USE_OPENAI, 'non-existent')).toBe(
-        false,
-      );
-    });
-
-    it('should return false for non-existent authType', () => {
-      expect(registry.hasModel(AuthType.USE_VERTEX_AI, 'gpt-4')).toBe(false);
-    });
-  });
-
-  describe('getDefaultModelForAuthType', () => {
-    it('should return coder-model for qwen-oauth', () => {
-      const registry = new ModelRegistry();
-      const defaultModel = registry.getDefaultModelForAuthType(
-        AuthType.QWEN_OAUTH,
-      );
-      expect(defaultModel?.id).toBe('coder-model');
-    });
-
-    it('should return first model for other authTypes', () => {
-      const registry = new ModelRegistry({
-        openai: [
-          { id: 'gpt-4', name: 'GPT-4' },
-          { id: 'gpt-3.5', name: 'GPT-3.5' },
-        ],
-      });
-
-      const defaultModel = registry.getDefaultModelForAuthType(
-        AuthType.USE_OPENAI,
-      );
-      expect(defaultModel?.id).toBe('gpt-4');
-    });
-  });
-
-  describe('validation', () => {
-    it('should throw error for model without id', () => {
-      expect(
-        () =>
-          new ModelRegistry({
-            openai: [{ id: '', name: 'No ID' }],
-          }),
-      ).toThrow('missing required field: id');
-    });
-  });
-
-  describe('default base URLs', () => {
-    it('should apply default dashscope URL for qwen-oauth', () => {
-      const registry = new ModelRegistry();
-      const model = registry.getModel(AuthType.QWEN_OAUTH, 'coder-model');
-      expect(model?.baseUrl).toBe('DYNAMIC_QWEN_OAUTH_BASE_URL');
-    });
-
-    it('should apply default openai URL when not specified', () => {
-      const registry = new ModelRegistry({
-        openai: [{ id: 'gpt-4', name: 'GPT-4' }],
-      });
-
-      const model = registry.getModel(AuthType.USE_OPENAI, 'gpt-4');
-      expect(model?.baseUrl).toBe('https://api.openai.com/v1');
-    });
-
-    it('should use custom baseUrl when specified', () => {
-      const registry = new ModelRegistry({
-        openai: [
-          {
-            id: 'deepseek',
-            name: 'DeepSeek',
-            baseUrl: 'https://api.deepseek.com/v1',
-          },
-        ],
-      });
-
-      const model = registry.getModel(AuthType.USE_OPENAI, 'deepseek');
-      expect(model?.baseUrl).toBe('https://api.deepseek.com/v1');
-    });
-  });
-
-  describe('authType key validation', () => {
-    it('should accept valid authType keys', () => {
-      const registry = new ModelRegistry({
-        openai: [{ id: 'gpt-4', name: 'GPT-4' }],
-        gemini: [{ id: 'gemini-pro', name: 'Gemini Pro' }],
-      });
-
-      const openaiModels = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(openaiModels.length).toBe(1);
-      expect(openaiModels[0].id).toBe('gpt-4');
-
-      const geminiModels = registry.getModelsForAuthType(AuthType.USE_GEMINI);
-      expect(geminiModels.length).toBe(1);
-      expect(geminiModels[0].id).toBe('gemini-pro');
-    });
-
-    it('should skip invalid authType keys with warning', () => {
-      const consoleWarnSpy = vi
-        .spyOn(console, 'warn')
-        .mockImplementation(() => undefined);
-
-      const registry = new ModelRegistry({
-        openai: [{ id: 'gpt-4', name: 'GPT-4' }],
-        'invalid-key': [{ id: 'some-model', name: 'Some Model' }],
-      } as unknown as ModelProvidersConfig);
-
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('[ModelRegistry] Invalid authType key'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('invalid-key'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('Expected one of:'),
-      );
-
-      // Valid key should be registered
-      expect(registry.getModelsForAuthType(AuthType.USE_OPENAI).length).toBe(1);
-
-      // Invalid key should be skipped (no crash)
-      const openaiModels = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(openaiModels.length).toBe(1);
-
-      consoleWarnSpy.mockRestore();
-    });
-
-    it('should handle mixed valid and invalid keys', () => {
-      const consoleWarnSpy = vi
-        .spyOn(console, 'warn')
-        .mockImplementation(() => undefined);
-
-      const registry = new ModelRegistry({
-        openai: [{ id: 'gpt-4', name: 'GPT-4' }],
-        'bad-key-1': [{ id: 'model-1', name: 'Model 1' }],
-        gemini: [{ id: 'gemini-pro', name: 'Gemini Pro' }],
-        'bad-key-2': [{ id: 'model-2', name: 'Model 2' }],
-      } as unknown as ModelProvidersConfig);
-
-      // Should warn twice for the two invalid keys
-      expect(consoleWarnSpy).toHaveBeenCalledTimes(2);
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('bad-key-1'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('bad-key-2'),
-      );
-
-      // Valid keys should be registered
-      expect(registry.getModelsForAuthType(AuthType.USE_OPENAI).length).toBe(1);
-      expect(registry.getModelsForAuthType(AuthType.USE_GEMINI).length).toBe(1);
-
-      // Invalid keys should be skipped
-      const openaiModels = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(openaiModels.length).toBe(1);
-
-      const geminiModels = registry.getModelsForAuthType(AuthType.USE_GEMINI);
-      expect(geminiModels.length).toBe(1);
-
-      consoleWarnSpy.mockRestore();
-    });
-
-    it('should list all valid AuthType values in warning message', () => {
-      const consoleWarnSpy = vi
-        .spyOn(console, 'warn')
-        .mockImplementation(() => undefined);
-
-      new ModelRegistry({
-        'invalid-auth': [{ id: 'model', name: 'Model' }],
-      } as unknown as ModelProvidersConfig);
-
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('openai'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('qwen-oauth'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('gemini'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('vertex-ai'),
-      );
-      expect(consoleWarnSpy).toHaveBeenCalledWith(
-        expect.stringContaining('anthropic'),
-      );
-
-      consoleWarnSpy.mockRestore();
-    });
-
-    it('should work correctly with getModelsForAuthType after validation', () => {
-      const consoleWarnSpy = vi
-        .spyOn(console, 'warn')
-        .mockImplementation(() => undefined);
-
-      const registry = new ModelRegistry({
-        openai: [
-          { id: 'gpt-4', name: 'GPT-4' },
-          { id: 'gpt-3.5', name: 'GPT-3.5' },
-        ],
-        'invalid-key': [{ id: 'invalid-model', name: 'Invalid Model' }],
-      } as unknown as ModelProvidersConfig);
-
-      const models = registry.getModelsForAuthType(AuthType.USE_OPENAI);
-      expect(models.length).toBe(2);
-      expect(models.find((m) => m.id === 'gpt-4')).toBeDefined();
-      expect(models.find((m) => m.id === 'gpt-3.5')).toBeDefined();
-      expect(models.find((m) => m.id === 'invalid-model')).toBeUndefined();
-
-      consoleWarnSpy.mockRestore();
-    });
-  });
-});

packages/core/src/models/modelRegistry.ts

@@ -1,180 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { AuthType } from '../core/contentGenerator.js';
-import { DEFAULT_OPENAI_BASE_URL } from '../core/openaiContentGenerator/constants.js';
-import {
-  type ModelConfig,
-  type ModelProvidersConfig,
-  type ResolvedModelConfig,
-  type AvailableModel,
-} from './types.js';
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
-import { QWEN_OAUTH_MODELS } from './constants.js';
-
-export { QWEN_OAUTH_MODELS } from './constants.js';
-
-/**
- * Validates if a string key is a valid AuthType enum value.
- * @param key - The key to validate
- * @returns The validated AuthType or undefined if invalid
- */
-function validateAuthTypeKey(key: string): AuthType | undefined {
-  // Check if the key is a valid AuthType enum value
-  if (Object.values(AuthType).includes(key as AuthType)) {
-    return key as AuthType;
-  }
-
-  // Invalid key
-  return undefined;
-}
-
-/**
- * Central registry for managing model configurations.
- * Models are organized by authType.
- */
-export class ModelRegistry {
-  private modelsByAuthType: Map<AuthType, Map<string, ResolvedModelConfig>>;
-
-  private getDefaultBaseUrl(authType: AuthType): string {
-    switch (authType) {
-      case AuthType.QWEN_OAUTH:
-        return 'DYNAMIC_QWEN_OAUTH_BASE_URL';
-      case AuthType.USE_OPENAI:
-        return DEFAULT_OPENAI_BASE_URL;
-      default:
-        return '';
-    }
-  }
-
-  constructor(modelProvidersConfig?: ModelProvidersConfig) {
-    this.modelsByAuthType = new Map();
-
-    // Always register qwen-oauth models (hard-coded, cannot be overridden)
-    this.registerAuthTypeModels(AuthType.QWEN_OAUTH, QWEN_OAUTH_MODELS);
-
-    // Register user-configured models for other authTypes
-    if (modelProvidersConfig) {
-      for (const [rawKey, models] of Object.entries(modelProvidersConfig)) {
-        const authType = validateAuthTypeKey(rawKey);
-
-        if (!authType) {
-          console.warn(
-            `[ModelRegistry] Invalid authType key "${rawKey}" in modelProviders config. Expected one of: ${Object.values(AuthType).join(', ')}. Skipping.`,
-          );
-          continue;
-        }
-
-        // Skip qwen-oauth as it uses hard-coded models
-        if (authType === AuthType.QWEN_OAUTH) {
-          continue;
-        }
-
-        this.registerAuthTypeModels(authType, models);
-      }
-    }
-  }
-
-  /**
-   * Register models for an authType
-   */
-  private registerAuthTypeModels(
-    authType: AuthType,
-    models: ModelConfig[],
-  ): void {
-    const modelMap = new Map<string, ResolvedModelConfig>();
-
-    for (const config of models) {
-      const resolved = this.resolveModelConfig(config, authType);
-      modelMap.set(config.id, resolved);
-    }
-
-    this.modelsByAuthType.set(authType, modelMap);
-  }
-
-  /**
-   * Get all models for a specific authType.
-   * This is used by /model command to show only relevant models.
-   */
-  getModelsForAuthType(authType: AuthType): AvailableModel[] {
-    const models = this.modelsByAuthType.get(authType);
-    if (!models) return [];
-
-    return Array.from(models.values()).map((model) => ({
-      id: model.id,
-      label: model.name,
-      description: model.description,
-      capabilities: model.capabilities,
-      authType: model.authType,
-      isVision: model.capabilities?.vision ?? false,
-    }));
-  }
-
-  /**
-   * Get model configuration by authType and modelId
-   */
-  getModel(
-    authType: AuthType,
-    modelId: string,
-  ): ResolvedModelConfig | undefined {
-    const models = this.modelsByAuthType.get(authType);
-    return models?.get(modelId);
-  }
-
-  /**
-   * Check if model exists for given authType
-   */
-  hasModel(authType: AuthType, modelId: string): boolean {
-    const models = this.modelsByAuthType.get(authType);
-    return models?.has(modelId) ?? false;
-  }
-
-  /**
-   * Get default model for an authType.
-   * For qwen-oauth, returns the coder model.
-   * For others, returns the first configured model.
-   */
-  getDefaultModelForAuthType(
-    authType: AuthType,
-  ): ResolvedModelConfig | undefined {
-    if (authType === AuthType.QWEN_OAUTH) {
-      return this.getModel(authType, DEFAULT_QWEN_MODEL);
-    }
-    const models = this.modelsByAuthType.get(authType);
-    if (!models || models.size === 0) return undefined;
-    return Array.from(models.values())[0];
-  }
-
-  /**
-   * Resolve model config by applying defaults
-   */
-  private resolveModelConfig(
-    config: ModelConfig,
-    authType: AuthType,
-  ): ResolvedModelConfig {
-    this.validateModelConfig(config, authType);
-
-    return {
-      ...config,
-      authType,
-      name: config.name || config.id,
-      baseUrl: config.baseUrl || this.getDefaultBaseUrl(authType),
-      generationConfig: config.generationConfig ?? {},
-      capabilities: config.capabilities || {},
-    };
-  }
-
-  /**
-   * Validate model configuration
-   */
-  private validateModelConfig(config: ModelConfig, authType: AuthType): void {
-    if (!config.id) {
-      throw new Error(
-        `Model config in authType '${authType}' missing required field: id`,
-      );
-    }
-  }
-}

packages/core/src/models/modelsConfig.test.ts

@@ -1,599 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, it, expect } from 'vitest';
-import { ModelsConfig } from './modelsConfig.js';
-import { AuthType } from '../core/contentGenerator.js';
-import type { ContentGeneratorConfig } from '../core/contentGenerator.js';
-import type { ModelProvidersConfig } from './types.js';
-
-describe('ModelsConfig', () => {
-  function deepClone<T>(value: T): T {
-    if (value === null || typeof value !== 'object') return value;
-    if (Array.isArray(value)) return value.map((v) => deepClone(v)) as T;
-    const out: Record<string, unknown> = {};
-    for (const key of Object.keys(value as Record<string, unknown>)) {
-      out[key] = deepClone((value as Record<string, unknown>)[key]);
-    }
-    return out as T;
-  }
-
-  function snapshotGenerationConfig(
-    modelsConfig: ModelsConfig,
-  ): ContentGeneratorConfig {
-    return deepClone<ContentGeneratorConfig>(
-      modelsConfig.getGenerationConfig() as ContentGeneratorConfig,
-    );
-  }
-
-  function currentGenerationConfig(
-    modelsConfig: ModelsConfig,
-  ): ContentGeneratorConfig {
-    return modelsConfig.getGenerationConfig() as ContentGeneratorConfig;
-  }
-
-  it('should fully rollback state when switchModel fails after applying defaults (authType change)', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'openai-a',
-          name: 'OpenAI A',
-          baseUrl: 'https://api.openai.example.com/v1',
-          envKey: 'OPENAI_API_KEY',
-          generationConfig: {
-            samplingParams: { temperature: 0.2, max_tokens: 123 },
-            timeout: 111,
-            maxRetries: 1,
-          },
-        },
-      ],
-      anthropic: [
-        {
-          id: 'anthropic-b',
-          name: 'Anthropic B',
-          baseUrl: 'https://api.anthropic.example.com/v1',
-          envKey: 'ANTHROPIC_API_KEY',
-          generationConfig: {
-            samplingParams: { temperature: 0.7, max_tokens: 456 },
-            timeout: 222,
-            maxRetries: 2,
-          },
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-    });
-
-    // Establish a known baseline state via a successful switch.
-    await modelsConfig.switchModel(AuthType.USE_OPENAI, 'openai-a');
-    const baselineAuthType = modelsConfig.getCurrentAuthType();
-    const baselineModel = modelsConfig.getModel();
-    const baselineStrict = modelsConfig.isStrictModelProviderSelection();
-    const baselineGc = snapshotGenerationConfig(modelsConfig);
-    const baselineSources = deepClone(
-      modelsConfig.getGenerationConfigSources(),
-    );
-
-    modelsConfig.setOnModelChange(async () => {
-      throw new Error('refresh failed');
-    });
-
-    await expect(
-      modelsConfig.switchModel(AuthType.USE_ANTHROPIC, 'anthropic-b'),
-    ).rejects.toThrow('refresh failed');
-
-    // Ensure state is fully rolled back (selection + generation config + flags).
-    expect(modelsConfig.getCurrentAuthType()).toBe(baselineAuthType);
-    expect(modelsConfig.getModel()).toBe(baselineModel);
-    expect(modelsConfig.isStrictModelProviderSelection()).toBe(baselineStrict);
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc).toMatchObject({
-      model: baselineGc.model,
-      baseUrl: baselineGc.baseUrl,
-      apiKeyEnvKey: baselineGc.apiKeyEnvKey,
-      samplingParams: baselineGc.samplingParams,
-      timeout: baselineGc.timeout,
-      maxRetries: baselineGc.maxRetries,
-    });
-
-    const sources = modelsConfig.getGenerationConfigSources();
-    expect(sources).toEqual(baselineSources);
-  });
-
-  it('should fully rollback state when switchModel fails after applying defaults', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_A',
-        },
-        {
-          id: 'model-b',
-          name: 'Model B',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_B',
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-    });
-
-    await modelsConfig.switchModel(AuthType.USE_OPENAI, 'model-a');
-    const baselineModel = modelsConfig.getModel();
-    const baselineGc = snapshotGenerationConfig(modelsConfig);
-    const baselineSources = deepClone(
-      modelsConfig.getGenerationConfigSources(),
-    );
-
-    modelsConfig.setOnModelChange(async () => {
-      throw new Error('hot-update failed');
-    });
-
-    await expect(
-      modelsConfig.switchModel(AuthType.USE_OPENAI, 'model-b'),
-    ).rejects.toThrow('hot-update failed');
-
-    expect(modelsConfig.getModel()).toBe(baselineModel);
-    expect(modelsConfig.getGenerationConfig()).toMatchObject({
-      model: baselineGc.model,
-      baseUrl: baselineGc.baseUrl,
-      apiKeyEnvKey: baselineGc.apiKeyEnvKey,
-    });
-    expect(modelsConfig.getGenerationConfigSources()).toEqual(baselineSources);
-  });
-
-  it('should require provider-sourced apiKey when switching models even if envKey is missing', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_SHARED',
-        },
-        {
-          id: 'model-b',
-          name: 'Model B',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_SHARED',
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'model-a',
-      },
-    });
-
-    // Simulate key prompt flow / explicit key provided via CLI/settings.
-    modelsConfig.updateCredentials({ apiKey: 'manual-key', model: 'model-a' });
-
-    await modelsConfig.switchModel(AuthType.USE_OPENAI, 'model-b');
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('model-b');
-    expect(gc.apiKey).toBeUndefined();
-    expect(gc.apiKeyEnvKey).toBe('API_KEY_SHARED');
-  });
-
-  it('should preserve settings generationConfig when model is updated via updateCredentials even if it matches modelProviders', () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_A',
-          generationConfig: {
-            samplingParams: { temperature: 0.1, max_tokens: 123 },
-            timeout: 111,
-            maxRetries: 1,
-          },
-        },
-      ],
-    };
-
-    // Simulate settings.model.generationConfig being resolved into ModelsConfig.generationConfig
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'model-a',
-        samplingParams: { temperature: 0.9, max_tokens: 999 },
-        timeout: 9999,
-        maxRetries: 9,
-      },
-      generationConfigSources: {
-        model: { kind: 'settings', detail: 'settings.model.name' },
-        samplingParams: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.samplingParams',
-        },
-        timeout: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.timeout',
-        },
-        maxRetries: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.maxRetries',
-        },
-      },
-    });
-
-    // User manually updates the model via updateCredentials (e.g. key prompt flow).
-    // Even if the model ID matches a modelProviders entry, we must not apply provider defaults
-    // that would overwrite settings.model.generationConfig.
-    modelsConfig.updateCredentials({ model: 'model-a' });
-
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('model-a');
-    expect(gc.samplingParams?.temperature).toBe(0.9);
-    expect(gc.samplingParams?.max_tokens).toBe(999);
-    expect(gc.timeout).toBe(9999);
-    expect(gc.maxRetries).toBe(9);
-  });
-
-  it('should preserve settings generationConfig across multiple auth refreshes after updateCredentials', () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_A',
-          generationConfig: {
-            samplingParams: { temperature: 0.1, max_tokens: 123 },
-            timeout: 111,
-            maxRetries: 1,
-          },
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'model-a',
-        samplingParams: { temperature: 0.9, max_tokens: 999 },
-        timeout: 9999,
-        maxRetries: 9,
-      },
-      generationConfigSources: {
-        model: { kind: 'settings', detail: 'settings.model.name' },
-        samplingParams: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.samplingParams',
-        },
-        timeout: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.timeout',
-        },
-        maxRetries: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.maxRetries',
-        },
-      },
-    });
-
-    modelsConfig.updateCredentials({
-      apiKey: 'manual-key',
-      baseUrl: 'https://manual.example.com/v1',
-      model: 'model-a',
-    });
-
-    // First auth refresh
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
-    // Second auth refresh should still preserve settings generationConfig
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('model-a');
-    expect(gc.samplingParams?.temperature).toBe(0.9);
-    expect(gc.samplingParams?.max_tokens).toBe(999);
-    expect(gc.timeout).toBe(9999);
-    expect(gc.maxRetries).toBe(9);
-  });
-
-  it('should clear provider-sourced config when updateCredentials is called after switchModel', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'provider-model',
-          name: 'Provider Model',
-          baseUrl: 'https://provider.example.com/v1',
-          envKey: 'PROVIDER_API_KEY',
-          generationConfig: {
-            samplingParams: { temperature: 0.1, max_tokens: 100 },
-            timeout: 1000,
-            maxRetries: 2,
-          },
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-    });
-
-    // Step 1: Switch to a provider model - this applies provider config
-    await modelsConfig.switchModel(AuthType.USE_OPENAI, 'provider-model');
-
-    // Verify provider config is applied
-    let gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('provider-model');
-    expect(gc.baseUrl).toBe('https://provider.example.com/v1');
-    expect(gc.samplingParams?.temperature).toBe(0.1);
-    expect(gc.samplingParams?.max_tokens).toBe(100);
-    expect(gc.timeout).toBe(1000);
-    expect(gc.maxRetries).toBe(2);
-
-    // Verify sources are from modelProviders
-    let sources = modelsConfig.getGenerationConfigSources();
-    expect(sources['model']?.kind).toBe('modelProviders');
-    expect(sources['baseUrl']?.kind).toBe('modelProviders');
-    expect(sources['samplingParams']?.kind).toBe('modelProviders');
-    expect(sources['timeout']?.kind).toBe('modelProviders');
-    expect(sources['maxRetries']?.kind).toBe('modelProviders');
-
-    // Step 2: User manually sets credentials via updateCredentials
-    // This should clear all provider-sourced config
-    modelsConfig.updateCredentials({
-      apiKey: 'manual-api-key',
-      model: 'custom-model',
-    });
-
-    // Verify provider-sourced config is cleared
-    gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('custom-model'); // Set by updateCredentials
-    expect(gc.apiKey).toBe('manual-api-key'); // Set by updateCredentials
-    expect(gc.baseUrl).toBeUndefined(); // Cleared (was from provider)
-    expect(gc.samplingParams).toBeUndefined(); // Cleared (was from provider)
-    expect(gc.timeout).toBeUndefined(); // Cleared (was from provider)
-    expect(gc.maxRetries).toBeUndefined(); // Cleared (was from provider)
-
-    // Verify sources are updated
-    sources = modelsConfig.getGenerationConfigSources();
-    expect(sources['model']?.kind).toBe('programmatic');
-    expect(sources['apiKey']?.kind).toBe('programmatic');
-    expect(sources['baseUrl']).toBeUndefined(); // Source cleared
-    expect(sources['samplingParams']).toBeUndefined(); // Source cleared
-    expect(sources['timeout']).toBeUndefined(); // Source cleared
-    expect(sources['maxRetries']).toBeUndefined(); // Source cleared
-  });
-
-  it('should preserve non-provider config when updateCredentials clears provider config', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'provider-model',
-          name: 'Provider Model',
-          baseUrl: 'https://provider.example.com/v1',
-          envKey: 'PROVIDER_API_KEY',
-          generationConfig: {
-            samplingParams: { temperature: 0.1, max_tokens: 100 },
-            timeout: 1000,
-            maxRetries: 2,
-          },
-        },
-      ],
-    };
-
-    // Initialize with settings-sourced config
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        samplingParams: { temperature: 0.8, max_tokens: 500 },
-        timeout: 5000,
-      },
-      generationConfigSources: {
-        samplingParams: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.samplingParams',
-        },
-        timeout: {
-          kind: 'settings',
-          detail: 'settings.model.generationConfig.timeout',
-        },
-      },
-    });
-
-    // Switch to provider model - this overwrites with provider config
-    await modelsConfig.switchModel(AuthType.USE_OPENAI, 'provider-model');
-
-    // Verify provider config is applied (overwriting settings)
-    let gc = currentGenerationConfig(modelsConfig);
-    expect(gc.samplingParams?.temperature).toBe(0.1);
-    expect(gc.timeout).toBe(1000);
-
-    // User manually sets credentials - clears provider-sourced config
-    modelsConfig.updateCredentials({
-      apiKey: 'manual-key',
-    });
-
-    // Provider-sourced config should be cleared
-    gc = currentGenerationConfig(modelsConfig);
-    expect(gc.samplingParams).toBeUndefined();
-    expect(gc.timeout).toBeUndefined();
-    // The original settings-sourced config is NOT restored automatically;
-    // it should be re-resolved by other layers in refreshAuth
-  });
-
-  it('should always force Qwen OAuth apiKey placeholder when applying model defaults', async () => {
-    // Simulate a stale/explicit apiKey existing before switching models.
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.QWEN_OAUTH,
-      generationConfig: {
-        apiKey: 'manual-key-should-not-leak',
-      },
-    });
-
-    // Switching within qwen-oauth triggers applyResolvedModelDefaults().
-    await modelsConfig.switchModel(AuthType.QWEN_OAUTH, 'vision-model');
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.apiKey).toBe('QWEN_OAUTH_DYNAMIC_TOKEN');
-    expect(gc.apiKeyEnvKey).toBeUndefined();
-  });
-
-  it('should apply Qwen OAuth apiKey placeholder during syncAfterAuthRefresh for fresh users', () => {
-    // Fresh user: authType not selected yet (currentAuthType undefined).
-    const modelsConfig = new ModelsConfig();
-
-    // Config.refreshAuth passes modelId from modelsConfig.getModel(), which falls back to DEFAULT_QWEN_MODEL.
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.QWEN_OAUTH,
-      modelsConfig.getModel(),
-    );
-
-    const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('coder-model');
-    expect(gc.apiKey).toBe('QWEN_OAUTH_DYNAMIC_TOKEN');
-    expect(gc.apiKeyEnvKey).toBeUndefined();
-  });
-
-  it('should maintain consistency between currentModelId and _generationConfig.model after initialization', () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'test-model',
-          name: 'Test Model',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'TEST_API_KEY',
-        },
-      ],
-    };
-
-    // Test case 1: generationConfig.model provided with other config
-    const config1 = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'test-model',
-        samplingParams: { temperature: 0.5 },
-      },
-    });
-    expect(config1.getModel()).toBe('test-model');
-    expect(config1.getGenerationConfig().model).toBe('test-model');
-
-    // Test case 2: generationConfig.model provided
-    const config2 = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'test-model',
-      },
-    });
-    expect(config2.getModel()).toBe('test-model');
-    expect(config2.getGenerationConfig().model).toBe('test-model');
-
-    // Test case 3: no model provided (empty string fallback)
-    const config3 = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {},
-    });
-    expect(config3.getModel()).toBe('coder-model'); // Falls back to DEFAULT_QWEN_MODEL
-    expect(config3.getGenerationConfig().model).toBeUndefined();
-  });
-
-  it('should maintain consistency between currentModelId and _generationConfig.model during syncAfterAuthRefresh', () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_A',
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-      generationConfig: {
-        model: 'model-a',
-      },
-    });
-
-    // Manually set credentials to trigger preserveManualCredentials path
-    modelsConfig.updateCredentials({ apiKey: 'manual-key' });
-
-    // syncAfterAuthRefresh with a different modelId
-    modelsConfig.syncAfterAuthRefresh(AuthType.USE_OPENAI, 'model-a');
-
-    // Both should be consistent
-    expect(modelsConfig.getModel()).toBe('model-a');
-    expect(modelsConfig.getGenerationConfig().model).toBe('model-a');
-  });
-
-  it('should maintain consistency between currentModelId and _generationConfig.model during setModel', async () => {
-    const modelProvidersConfig: ModelProvidersConfig = {
-      openai: [
-        {
-          id: 'model-a',
-          name: 'Model A',
-          baseUrl: 'https://api.example.com/v1',
-          envKey: 'API_KEY_A',
-        },
-      ],
-    };
-
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-      modelProvidersConfig,
-    });
-
-    // setModel with a raw model ID
-    await modelsConfig.setModel('custom-model');
-
-    // Both should be consistent
-    expect(modelsConfig.getModel()).toBe('custom-model');
-    expect(modelsConfig.getGenerationConfig().model).toBe('custom-model');
-  });
-
-  it('should maintain consistency between currentModelId and _generationConfig.model during updateCredentials', () => {
-    const modelsConfig = new ModelsConfig({
-      initialAuthType: AuthType.USE_OPENAI,
-    });
-
-    // updateCredentials with model
-    modelsConfig.updateCredentials({
-      apiKey: 'test-key',
-      model: 'updated-model',
-    });
-
-    // Both should be consistent
-    expect(modelsConfig.getModel()).toBe('updated-model');
-    expect(modelsConfig.getGenerationConfig().model).toBe('updated-model');
-  });
-});

packages/core/src/models/modelsConfig.ts

@@ -1,634 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import process from 'node:process';
-
-import { AuthType } from '../core/contentGenerator.js';
-import type { ContentGeneratorConfig } from '../core/contentGenerator.js';
-import type { ContentGeneratorConfigSources } from '../core/contentGenerator.js';
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
-
-import { ModelRegistry } from './modelRegistry.js';
-import {
-  type ModelProvidersConfig,
-  type ResolvedModelConfig,
-  type AvailableModel,
-  type ModelSwitchMetadata,
-} from './types.js';
-import {
-  MODEL_GENERATION_CONFIG_FIELDS,
-  CREDENTIAL_FIELDS,
-  PROVIDER_SOURCED_FIELDS,
-} from './constants.js';
-
-export {
-  MODEL_GENERATION_CONFIG_FIELDS,
-  CREDENTIAL_FIELDS,
-  PROVIDER_SOURCED_FIELDS,
-};
-
-/**
- * Callback for when the model changes.
- * Used by Config to refresh auth/ContentGenerator when needed.
- */
-export type OnModelChangeCallback = (
-  authType: AuthType,
-  requiresRefresh: boolean,
-) => Promise<void>;
-
-/**
- * Options for creating ModelsConfig
- */
-export interface ModelsConfigOptions {
-  /** Initial authType from settings */
-  initialAuthType?: AuthType;
-  /** Model providers configuration */
-  modelProvidersConfig?: ModelProvidersConfig;
-  /** Generation config from CLI/settings */
-  generationConfig?: Partial<ContentGeneratorConfig>;
-  /** Source tracking for generation config */
-  generationConfigSources?: ContentGeneratorConfigSources;
-  /** Callback when model changes require refresh */
-  onModelChange?: OnModelChangeCallback;
-}
-
-/**
- * ModelsConfig manages all model selection logic and state.
- *
- * This class encapsulates:
- * - ModelRegistry for model configuration storage
- * - Current authType and modelId selection
- * - Generation config management
- * - Model switching logic
- *
- * Config uses this as a thin entry point for all model-related operations.
- */
-export class ModelsConfig {
-  private readonly modelRegistry: ModelRegistry;
-
-  // Current selection state
-  private currentAuthType: AuthType | undefined;
-
-  // Generation config state
-  private _generationConfig: Partial<ContentGeneratorConfig>;
-  private generationConfigSources: ContentGeneratorConfigSources;
-
-  // Flag for strict model provider selection
-  private strictModelProviderSelection: boolean = false;
-
-  // One-shot flag for qwen-oauth credential caching
-  private requireCachedQwenCredentialsOnce: boolean = false;
-
-  // One-shot flag indicating credentials were manually set via updateCredentials()
-  // When true, syncAfterAuthRefresh should NOT override these credentials with
-  // modelProviders defaults (even if the model ID matches a registry entry).
-  //
-  // This must be persistent across auth refreshes, because refreshAuth() can be
-  // triggered multiple times after a credential prompt flow. We only clear this
-  // flag when we explicitly apply modelProvider defaults (i.e. when the user
-  // switches to a registry model via switchModel).
-  private hasManualCredentials: boolean = false;
-
-  // Callback for notifying Config of model changes
-  private onModelChange?: OnModelChangeCallback;
-
-  // Flag indicating whether authType was explicitly provided (not defaulted)
-  private readonly authTypeWasExplicitlyProvided: boolean;
-
-  private static deepClone<T>(value: T): T {
-    if (value === null || typeof value !== 'object') {
-      return value;
-    }
-    if (Array.isArray(value)) {
-      return value.map((v) => ModelsConfig.deepClone(v)) as T;
-    }
-    const out: Record<string, unknown> = {};
-    for (const key of Object.keys(value as Record<string, unknown>)) {
-      out[key] = ModelsConfig.deepClone(
-        (value as Record<string, unknown>)[key],
-      );
-    }
-    return out as T;
-  }
-
-  private snapshotState(): {
-    currentAuthType: AuthType | undefined;
-    generationConfig: Partial<ContentGeneratorConfig>;
-    generationConfigSources: ContentGeneratorConfigSources;
-    strictModelProviderSelection: boolean;
-    requireCachedQwenCredentialsOnce: boolean;
-    hasManualCredentials: boolean;
-  } {
-    return {
-      currentAuthType: this.currentAuthType,
-      generationConfig: ModelsConfig.deepClone(this._generationConfig),
-      generationConfigSources: ModelsConfig.deepClone(
-        this.generationConfigSources,
-      ),
-      strictModelProviderSelection: this.strictModelProviderSelection,
-      requireCachedQwenCredentialsOnce: this.requireCachedQwenCredentialsOnce,
-      hasManualCredentials: this.hasManualCredentials,
-    };
-  }
-
-  private restoreState(
-    snapshot: ReturnType<ModelsConfig['snapshotState']>,
-  ): void {
-    this.currentAuthType = snapshot.currentAuthType;
-    this._generationConfig = snapshot.generationConfig;
-    this.generationConfigSources = snapshot.generationConfigSources;
-    this.strictModelProviderSelection = snapshot.strictModelProviderSelection;
-    this.requireCachedQwenCredentialsOnce =
-      snapshot.requireCachedQwenCredentialsOnce;
-    this.hasManualCredentials = snapshot.hasManualCredentials;
-  }
-
-  constructor(options: ModelsConfigOptions = {}) {
-    this.modelRegistry = new ModelRegistry(options.modelProvidersConfig);
-    this.onModelChange = options.onModelChange;
-
-    // Initialize generation config
-    // Note: generationConfig.model should already be fully resolved by ModelConfigResolver
-    // before ModelsConfig is instantiated, so we use it as the single source of truth
-    this._generationConfig = {
-      ...(options.generationConfig || {}),
-    };
-    this.generationConfigSources = options.generationConfigSources || {};
-
-    // Track if authType was explicitly provided
-    this.authTypeWasExplicitlyProvided = options.initialAuthType !== undefined;
-
-    // Initialize selection state
-    this.currentAuthType = options.initialAuthType;
-  }
-
-  /**
-   * Get current model ID
-   */
-  getModel(): string {
-    return this._generationConfig.model || DEFAULT_QWEN_MODEL;
-  }
-
-  /**
-   * Get current authType
-   */
-  getCurrentAuthType(): AuthType | undefined {
-    return this.currentAuthType;
-  }
-
-  /**
-   * Check if authType was explicitly provided (via CLI or settings).
-   * If false, no authType was provided yet (fresh user).
-   */
-  wasAuthTypeExplicitlyProvided(): boolean {
-    return this.authTypeWasExplicitlyProvided;
-  }
-
-  /**
-   * Get available models for current authType
-   */
-  getAvailableModels(): AvailableModel[] {
-    return this.currentAuthType
-      ? this.modelRegistry.getModelsForAuthType(this.currentAuthType)
-      : [];
-  }
-
-  /**
-   * Get available models for a specific authType
-   */
-  getAvailableModelsForAuthType(authType: AuthType): AvailableModel[] {
-    return this.modelRegistry.getModelsForAuthType(authType);
-  }
-
-  /**
-   * Check if a model exists for the given authType
-   */
-  hasModel(authType: AuthType, modelId: string): boolean {
-    return this.modelRegistry.hasModel(authType, modelId);
-  }
-
-  /**
-   * Set model programmatically (e.g., VLM auto-switch, fallback).
-   * Supports both registry models and raw model IDs.
-   */
-  async setModel(
-    newModel: string,
-    metadata?: ModelSwitchMetadata,
-  ): Promise<void> {
-    // Special case: qwen-oauth VLM auto-switch - hot update in place
-    if (
-      this.currentAuthType === AuthType.QWEN_OAUTH &&
-      (newModel === DEFAULT_QWEN_MODEL || newModel === 'vision-model')
-    ) {
-      this.strictModelProviderSelection = false;
-      this._generationConfig.model = newModel;
-      this.generationConfigSources['model'] = {
-        kind: 'programmatic',
-        detail: metadata?.reason || 'setModel',
-      };
-      return;
-    }
-
-    // If model exists in registry, use full switch logic
-    if (
-      this.currentAuthType &&
-      this.modelRegistry.hasModel(this.currentAuthType, newModel)
-    ) {
-      await this.switchModel(this.currentAuthType, newModel);
-      return;
-    }
-
-    // Raw model override: update generation config in-place
-    this.strictModelProviderSelection = false;
-    this._generationConfig.model = newModel;
-    this.generationConfigSources['model'] = {
-      kind: 'programmatic',
-      detail: metadata?.reason || 'setModel',
-    };
-  }
-
-  /**
-   * Switch model (and optionally authType) via registry-backed selection.
-   * This is a superset of the previous split APIs for model-only vs authType+model switching.
-   */
-  async switchModel(
-    authType: AuthType,
-    modelId: string,
-    options?: { requireCachedCredentials?: boolean },
-    _metadata?: ModelSwitchMetadata,
-  ): Promise<void> {
-    const snapshot = this.snapshotState();
-    if (authType === AuthType.QWEN_OAUTH && options?.requireCachedCredentials) {
-      this.requireCachedQwenCredentialsOnce = true;
-    }
-
-    try {
-      const isAuthTypeChange = authType !== this.currentAuthType;
-      this.currentAuthType = authType;
-
-      const model = this.modelRegistry.getModel(authType, modelId);
-      if (!model) {
-        throw new Error(
-          `Model '${modelId}' not found for authType '${authType}'`,
-        );
-      }
-
-      // Apply model defaults
-      this.applyResolvedModelDefaults(model);
-
-      const requiresRefresh = isAuthTypeChange
-        ? true
-        : this.checkRequiresRefresh(snapshot.generationConfig.model || '');
-
-      if (this.onModelChange) {
-        await this.onModelChange(authType, requiresRefresh);
-      }
-    } catch (error) {
-      // Rollback on error
-      this.restoreState(snapshot);
-      throw error;
-    }
-  }
-
-  /**
-   * Get generation config for ContentGenerator creation
-   */
-  getGenerationConfig(): Partial<ContentGeneratorConfig> {
-    return this._generationConfig;
-  }
-
-  /**
-   * Get generation config sources for debugging/UI
-   */
-  getGenerationConfigSources(): ContentGeneratorConfigSources {
-    return this.generationConfigSources;
-  }
-
-  /**
-   * Update credentials in generation config.
-   * Sets a flag to prevent syncAfterAuthRefresh from overriding these credentials.
-   *
-   * When credentials are manually set, we clear all provider-sourced configuration
-   * to maintain provider atomicity (either fully applied or not at all).
-   * Other layers (CLI, env, settings, defaults) will participate in resolve.
-   */
-  updateCredentials(credentials: {
-    apiKey?: string;
-    baseUrl?: string;
-    model?: string;
-  }): void {
-    /**
-     * If any fields are updated here, we treat the resulting config as manually overridden
-     * and avoid applying modelProvider defaults during the next auth refresh.
-     *
-     * Clear all provider-sourced configuration to maintain provider atomicity.
-     * This ensures that when user manually sets credentials, the provider config
-     * is either fully applied (via switchModel) or not at all.
-     */
-    if (credentials.apiKey || credentials.baseUrl || credentials.model) {
-      this.hasManualCredentials = true;
-      this.clearProviderSourcedConfig();
-    }
-
-    if (credentials.apiKey) {
-      this._generationConfig.apiKey = credentials.apiKey;
-      this.generationConfigSources['apiKey'] = {
-        kind: 'programmatic',
-        detail: 'updateCredentials',
-      };
-    }
-    if (credentials.baseUrl) {
-      this._generationConfig.baseUrl = credentials.baseUrl;
-      this.generationConfigSources['baseUrl'] = {
-        kind: 'programmatic',
-        detail: 'updateCredentials',
-      };
-    }
-    if (credentials.model) {
-      this._generationConfig.model = credentials.model;
-      this.generationConfigSources['model'] = {
-        kind: 'programmatic',
-        detail: 'updateCredentials',
-      };
-    }
-    // When credentials are manually set, disable strict model provider selection
-    // so validation doesn't require envKey-based credentials
-    this.strictModelProviderSelection = false;
-    // Clear apiKeyEnvKey to prevent validation from requiring environment variable
-    this._generationConfig.apiKeyEnvKey = undefined;
-  }
-
-  /**
-   * Clear configuration fields that were sourced from modelProviders.
-   * This ensures provider config atomicity when user manually sets credentials.
-   * Other layers (CLI, env, settings, defaults) will participate in resolve.
-   */
-  private clearProviderSourcedConfig(): void {
-    for (const field of PROVIDER_SOURCED_FIELDS) {
-      const source = this.generationConfigSources[field];
-      if (source?.kind === 'modelProviders') {
-        // Clear the value - let other layers resolve it
-        delete (this._generationConfig as Record<string, unknown>)[field];
-        delete this.generationConfigSources[field];
-      }
-    }
-  }
-
-  /**
-   * Get whether strict model provider selection is enabled
-   */
-  isStrictModelProviderSelection(): boolean {
-    return this.strictModelProviderSelection;
-  }
-
-  /**
-   * Reset strict model provider selection flag
-   */
-  resetStrictModelProviderSelection(): void {
-    this.strictModelProviderSelection = false;
-  }
-
-  /**
-   * Check and consume the one-shot cached credentials flag
-   */
-  consumeRequireCachedCredentialsFlag(): boolean {
-    const value = this.requireCachedQwenCredentialsOnce;
-    this.requireCachedQwenCredentialsOnce = false;
-    return value;
-  }
-
-  /**
-   * Apply resolved model config to generation config
-   */
-  private applyResolvedModelDefaults(model: ResolvedModelConfig): void {
-    this.strictModelProviderSelection = true;
-    // We're explicitly applying modelProvider defaults now, so manual overrides
-    // should no longer block syncAfterAuthRefresh from applying provider defaults.
-    this.hasManualCredentials = false;
-
-    this._generationConfig.model = model.id;
-    this.generationConfigSources['model'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'model.id',
-    };
-
-    // Clear credentials to avoid reusing previous model's API key
-
-    // For Qwen OAuth, apiKey must always be a placeholder. It will be dynamically
-    // replaced when building requests. Do not preserve any previous key or read
-    // from envKey.
-    //
-    // (OpenAI client instantiation requires an apiKey even though it will be
-    // replaced later.)
-    if (this.currentAuthType === AuthType.QWEN_OAUTH) {
-      this._generationConfig.apiKey = 'QWEN_OAUTH_DYNAMIC_TOKEN';
-      this.generationConfigSources['apiKey'] = {
-        kind: 'computed',
-        detail: 'Qwen OAuth placeholder token',
-      };
-      this._generationConfig.apiKeyEnvKey = undefined;
-      delete this.generationConfigSources['apiKeyEnvKey'];
-    } else {
-      this._generationConfig.apiKey = undefined;
-      this._generationConfig.apiKeyEnvKey = undefined;
-    }
-
-    // Read API key from environment variable if envKey is specified
-    if (model.envKey !== undefined) {
-      const apiKey = process.env[model.envKey];
-      if (apiKey) {
-        this._generationConfig.apiKey = apiKey;
-        this.generationConfigSources['apiKey'] = {
-          kind: 'env',
-          envKey: model.envKey,
-          via: {
-            kind: 'modelProviders',
-            authType: model.authType,
-            modelId: model.id,
-            detail: 'envKey',
-          },
-        };
-      }
-      this._generationConfig.apiKeyEnvKey = model.envKey;
-      this.generationConfigSources['apiKeyEnvKey'] = {
-        kind: 'modelProviders',
-        authType: model.authType,
-        modelId: model.id,
-        detail: 'envKey',
-      };
-    }
-
-    // Base URL
-    this._generationConfig.baseUrl = model.baseUrl;
-    this.generationConfigSources['baseUrl'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'baseUrl',
-    };
-
-    // Generation config
-    const gc = model.generationConfig;
-    this._generationConfig.samplingParams = { ...(gc.samplingParams || {}) };
-    this.generationConfigSources['samplingParams'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.samplingParams',
-    };
-
-    this._generationConfig.timeout = gc.timeout;
-    this.generationConfigSources['timeout'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.timeout',
-    };
-
-    this._generationConfig.maxRetries = gc.maxRetries;
-    this.generationConfigSources['maxRetries'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.maxRetries',
-    };
-
-    this._generationConfig.disableCacheControl = gc.disableCacheControl;
-    this.generationConfigSources['disableCacheControl'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.disableCacheControl',
-    };
-
-    this._generationConfig.schemaCompliance = gc.schemaCompliance;
-    this.generationConfigSources['schemaCompliance'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.schemaCompliance',
-    };
-
-    this._generationConfig.reasoning = gc.reasoning;
-    this.generationConfigSources['reasoning'] = {
-      kind: 'modelProviders',
-      authType: model.authType,
-      modelId: model.id,
-      detail: 'generationConfig.reasoning',
-    };
-  }
-
-  /**
-   * Check if model switch requires ContentGenerator refresh.
-   *
-   * Note: This method is ONLY called by switchModel() for same-authType model switches.
-   * Cross-authType switches use switchModel(authType, modelId), which always requires full refresh.
-   *
-   * When this method is called:
-   * - this.currentAuthType is already the target authType
-   * - We're checking if switching between two models within the SAME authType needs refresh
-   *
-   * Examples:
-   * - Qwen OAuth: coder-model -> vision-model (same authType, hot-update safe)
-   * - OpenAI: model-a -> model-b with same envKey (same authType, hot-update safe)
-   * - OpenAI: gpt-4 -> deepseek-chat with different envKey (same authType, needs refresh)
-   *
-   * Cross-authType scenarios:
-   * - OpenAI -> Qwen OAuth: handled by switchModel(authType, modelId), always refreshes
-   * - Qwen OAuth -> OpenAI: handled by switchModel(authType, modelId), always refreshes
-   */
-  private checkRequiresRefresh(previousModelId: string): boolean {
-    // Defensive: this method is only called after switchModel() sets currentAuthType,
-    // but keep type safety for any future callsites.
-    const authType = this.currentAuthType;
-    if (!authType) {
-      return true;
-    }
-
-    // For Qwen OAuth, model switches within the same authType can always be hot-updated
-    // (coder-model <-> vision-model don't require ContentGenerator recreation)
-    if (authType === AuthType.QWEN_OAUTH) {
-      return false;
-    }
-
-    // Get previous and current model configs
-    const previousModel = this.modelRegistry.getModel(
-      authType,
-      previousModelId,
-    );
-    const currentModel = this.modelRegistry.getModel(
-      authType,
-      this._generationConfig.model || '',
-    );
-
-    // If either model is not in registry, require refresh to be safe
-    if (!previousModel || !currentModel) {
-      return true;
-    }
-
-    // Check if critical fields changed that require ContentGenerator recreation
-    const criticalFieldsChanged =
-      previousModel.envKey !== currentModel.envKey ||
-      previousModel.baseUrl !== currentModel.baseUrl;
-
-    if (criticalFieldsChanged) {
-      return true;
-    }
-
-    // For other auth types with strict model provider selection,
-    // if no critical fields changed, we can still hot-update
-    // (e.g., switching between two OpenAI models with same envKey and baseUrl)
-    return false;
-  }
-
-  /**
-   * Called by Config.refreshAuth to sync state after auth refresh.
-   *
-   * IMPORTANT: If credentials were manually set via updateCredentials(),
-   * we should NOT override them with modelProvider defaults.
-   * This handles the case where user inputs credentials via OpenAIKeyPrompt
-   * after removing environment variables for a previously selected model.
-   */
-  syncAfterAuthRefresh(authType: AuthType, modelId?: string): void {
-    // Check if we have manually set credentials that should be preserved
-    const preserveManualCredentials = this.hasManualCredentials;
-
-    // If credentials were manually set, don't apply modelProvider defaults
-    // Just update the authType and preserve the manually set credentials
-    if (preserveManualCredentials) {
-      this.strictModelProviderSelection = false;
-      this.currentAuthType = authType;
-      if (modelId) {
-        this._generationConfig.model = modelId;
-      }
-      return;
-    }
-
-    this.strictModelProviderSelection = false;
-
-    if (modelId && this.modelRegistry.hasModel(authType, modelId)) {
-      const resolved = this.modelRegistry.getModel(authType, modelId);
-      if (resolved) {
-        // Ensure applyResolvedModelDefaults can correctly apply authType-specific
-        // behavior (e.g., Qwen OAuth placeholder token) by setting currentAuthType
-        // before applying defaults.
-        this.currentAuthType = authType;
-        this.applyResolvedModelDefaults(resolved);
-      }
-    } else {
-      this.currentAuthType = authType;
-    }
-  }
-
-  /**
-   * Update callback for model changes
-   */
-  setOnModelChange(callback: OnModelChangeCallback): void {
-    this.onModelChange = callback;
-  }
-}

packages/core/src/models/types.ts

@@ -1,101 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import type {
-  AuthType,
-  ContentGeneratorConfig,
-} from '../core/contentGenerator.js';
-
-/**
- * Model capabilities configuration
- */
-export interface ModelCapabilities {
-  /** Supports image/vision inputs */
-  vision?: boolean;
-}
-
-/**
- * Model-scoped generation configuration.
- *
- * Keep this consistent with {@link ContentGeneratorConfig} so modelProviders can
- * feed directly into content generator resolution without shape conversion.
- */
-export type ModelGenerationConfig = Pick<
-  ContentGeneratorConfig,
-  | 'samplingParams'
-  | 'timeout'
-  | 'maxRetries'
-  | 'disableCacheControl'
-  | 'schemaCompliance'
-  | 'reasoning'
->;
-
-/**
- * Model configuration for a single model within an authType
- */
-export interface ModelConfig {
-  /** Unique model ID within authType (e.g., "qwen-coder", "gpt-4-turbo") */
-  id: string;
-  /** Display name (defaults to id) */
-  name?: string;
-  /** Model description */
-  description?: string;
-  /** Environment variable name to read API key from (e.g., "OPENAI_API_KEY") */
-  envKey?: string;
-  /** API endpoint override */
-  baseUrl?: string;
-  /** Model capabilities, reserve for future use. Now we do not read this to determine multi-modal support or other capabilities. */
-  capabilities?: ModelCapabilities;
-  /** Generation configuration (sampling parameters) */
-  generationConfig?: ModelGenerationConfig;
-}
-
-/**
- * Model providers configuration grouped by authType
- */
-export type ModelProvidersConfig = {
-  [authType: string]: ModelConfig[];
-};
-
-/**
- * Resolved model config with all defaults applied
- */
-export interface ResolvedModelConfig extends ModelConfig {
-  /** AuthType this model belongs to (always present from map key) */
-  authType: AuthType;
-  /** Display name (always present, defaults to id) */
-  name: string;
-  /** Environment variable name to read API key from (optional, provider-specific) */
-  envKey?: string;
-  /** API base URL (always present, has default per authType) */
-  baseUrl: string;
-  /** Generation config (always present, merged with defaults) */
-  generationConfig: ModelGenerationConfig;
-  /** Capabilities (always present, defaults to {}) */
-  capabilities: ModelCapabilities;
-}
-
-/**
- * Model info for UI display
- */
-export interface AvailableModel {
-  id: string;
-  label: string;
-  description?: string;
-  capabilities?: ModelCapabilities;
-  authType: AuthType;
-  isVision?: boolean;
-}
-
-/**
- * Metadata for model switch operations
- */
-export interface ModelSwitchMetadata {
-  /** Reason for the switch */
-  reason?: string;
-  /** Additional context */
-  context?: string;
-}

packages/core/src/qwen/qwenOAuth2.ts

@@ -601,17 +601,8 @@ async function authWithQwenDeviceFlow(
       console.log('Waiting for authorization to complete...\n');
     };
 
-    // Always show the fallback message in non-interactive environments to ensure
-    // users can see the authorization URL even if browser launching is attempted.
-    // This is critical for headless/remote environments where browser launching
-    // may silently fail without throwing an error.
-    if (config.isBrowserLaunchSuppressed()) {
-      // Browser launch is suppressed, show fallback message
-      showFallbackMessage();
-    } else {
-      // Try to open the URL in browser, but always show the URL as fallback
-      // to handle cases where browser launch silently fails (e.g., headless servers)
-      showFallbackMessage();
+    // If browser launch is not suppressed, try to open the URL
+    if (!config.isBrowserLaunchSuppressed()) {
       try {
         const childProcess = await open(deviceAuth.verification_uri_complete);
 
@@ -620,19 +611,19 @@ async function authWithQwenDeviceFlow(
         // in a minimal Docker container), it will emit an unhandled 'error' event,
         // causing the entire Node.js process to crash.
         if (childProcess) {
-          childProcess.on('error', (err) => {
+          childProcess.on('error', () => {
             console.debug(
-              'Browser launch failed:',
-              err.message || 'Unknown error',
+              'Failed to open browser. Visit this URL to authorize:',
             );
+            showFallbackMessage();
           });
         }
-      } catch (err) {
-        console.debug(
-          'Failed to open browser:',
-          err instanceof Error ? err.message : 'Unknown error',
-        );
+      } catch (_err) {
+        showFallbackMessage();
       }
+    } else {
+      // Browser launch is suppressed, show fallback message
+      showFallbackMessage();
     }
 
     // Emit auth progress event

packages/core/src/subagents/subagent.test.ts

@@ -22,11 +22,10 @@ import {
   type Mock,
 } from 'vitest';
 import { Config, type ConfigParameters } from '../config/config.js';
-import { DEFAULT_QWEN_MODEL } from '../config/models.js';
+import { DEFAULT_GEMINI_MODEL } from '../config/models.js';
 import {
   createContentGenerator,
   createContentGeneratorConfig,
-  resolveContentGeneratorConfigWithSources,
   AuthType,
 } from '../core/contentGenerator.js';
 import { GeminiChat } from '../core/geminiChat.js';
@@ -43,33 +42,7 @@ import type {
 import { SubagentTerminateMode } from './types.js';
 
 vi.mock('../core/geminiChat.js');
-vi.mock('../core/contentGenerator.js', async (importOriginal) => {
-  const actual =
-    await importOriginal<typeof import('../core/contentGenerator.js')>();
-  const { DEFAULT_QWEN_MODEL } = await import('../config/models.js');
-  return {
-    ...actual,
-    createContentGenerator: vi.fn().mockResolvedValue({
-      generateContent: vi.fn(),
-      generateContentStream: vi.fn(),
-      countTokens: vi.fn().mockResolvedValue({ totalTokens: 100 }),
-      embedContent: vi.fn(),
-      useSummarizedThinking: vi.fn().mockReturnValue(false),
-    }),
-    createContentGeneratorConfig: vi.fn().mockReturnValue({
-      model: DEFAULT_QWEN_MODEL,
-      authType: actual.AuthType.USE_GEMINI,
-    }),
-    resolveContentGeneratorConfigWithSources: vi.fn().mockReturnValue({
-      config: {
-        model: DEFAULT_QWEN_MODEL,
-        authType: actual.AuthType.USE_GEMINI,
-        apiKey: 'test-api-key',
-      },
-      sources: {},
-    }),
-  };
-});
+vi.mock('../core/contentGenerator.js');
 vi.mock('../utils/environmentContext.js', () => ({
   getEnvironmentContext: vi.fn().mockResolvedValue([{ text: 'Env Context' }]),
   getInitialChatHistory: vi.fn(async (_config, extraHistory) => [
@@ -92,7 +65,7 @@ async function createMockConfig(
   toolRegistryMocks = {},
 ): Promise<{ config: Config; toolRegistry: ToolRegistry }> {
   const configParams: ConfigParameters = {
-    model: DEFAULT_QWEN_MODEL,
+    model: DEFAULT_GEMINI_MODEL,
     targetDir: '.',
     debugMode: false,
     cwd: process.cwd(),
@@ -116,7 +89,7 @@ async function createMockConfig(
 
   // Mock getContentGeneratorConfig to return a valid config
   vi.spyOn(config, 'getContentGeneratorConfig').mockReturnValue({
-    model: DEFAULT_QWEN_MODEL,
+    model: DEFAULT_GEMINI_MODEL,
     authType: AuthType.USE_GEMINI,
   });
 
@@ -219,17 +192,9 @@ describe('subagent.ts', () => {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
       } as any);
       vi.mocked(createContentGeneratorConfig).mockReturnValue({
-        model: DEFAULT_QWEN_MODEL,
+        model: DEFAULT_GEMINI_MODEL,
         authType: undefined,
       });
-      vi.mocked(resolveContentGeneratorConfigWithSources).mockReturnValue({
-        config: {
-          model: DEFAULT_QWEN_MODEL,
-          authType: AuthType.USE_GEMINI,
-          apiKey: 'test-api-key',
-        },
-        sources: {},
-      });
 
       mockSendMessageStream = vi.fn();
       vi.mocked(GeminiChat).mockImplementation(

packages/core/src/utils/configResolver.test.ts

@@ -1,141 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { describe, it, expect } from 'vitest';
-import {
-  resolveField,
-  resolveOptionalField,
-  layer,
-  envLayer,
-  cliSource,
-  settingsSource,
-  defaultSource,
-} from './configResolver.js';
-
-describe('configResolver', () => {
-  describe('resolveField', () => {
-    it('returns first present value from layers', () => {
-      const result = resolveField(
-        [
-          layer(undefined, cliSource('--model')),
-          envLayer({ MODEL: 'from-env' }, 'MODEL'),
-          layer('from-settings', settingsSource('model.name')),
-        ],
-        'default-model',
-      );
-
-      expect(result.value).toBe('from-env');
-      expect(result.source).toEqual({ kind: 'env', envKey: 'MODEL' });
-    });
-
-    it('returns default when all layers are undefined', () => {
-      const result = resolveField(
-        [layer(undefined, cliSource('--model')), envLayer({}, 'MODEL')],
-        'default-model',
-        defaultSource('default-model'),
-      );
-
-      expect(result.value).toBe('default-model');
-      expect(result.source).toEqual({
-        kind: 'default',
-        detail: 'default-model',
-      });
-    });
-
-    it('respects layer priority order', () => {
-      const result = resolveField(
-        [
-          layer('cli-value', cliSource('--model')),
-          envLayer({ MODEL: 'env-value' }, 'MODEL'),
-          layer('settings-value', settingsSource('model.name')),
-        ],
-        'default',
-      );
-
-      expect(result.value).toBe('cli-value');
-      expect(result.source.kind).toBe('cli');
-    });
-
-    it('skips empty strings', () => {
-      const result = resolveField(
-        [
-          layer('', cliSource('--model')),
-          envLayer({ MODEL: 'env-value' }, 'MODEL'),
-        ],
-        'default',
-      );
-
-      expect(result.value).toBe('env-value');
-    });
-  });
-
-  describe('resolveOptionalField', () => {
-    it('returns undefined when no value present', () => {
-      const result = resolveOptionalField([
-        layer(undefined, cliSource('--key')),
-        envLayer({}, 'KEY'),
-      ]);
-
-      expect(result).toBeUndefined();
-    });
-
-    it('returns first present value', () => {
-      const result = resolveOptionalField([
-        layer(undefined, cliSource('--key')),
-        envLayer({ KEY: 'found' }, 'KEY'),
-      ]);
-
-      expect(result).toBeDefined();
-      expect(result!.value).toBe('found');
-      expect(result!.source.kind).toBe('env');
-    });
-  });
-
-  describe('envLayer', () => {
-    it('creates layer from environment variable', () => {
-      const env = { MY_VAR: 'my-value' };
-      const result = envLayer(env, 'MY_VAR');
-
-      expect(result.value).toBe('my-value');
-      expect(result.source).toEqual({ kind: 'env', envKey: 'MY_VAR' });
-    });
-
-    it('handles missing environment variable', () => {
-      const env = {};
-      const result = envLayer(env, 'MISSING_VAR');
-
-      expect(result.value).toBeUndefined();
-      expect(result.source).toEqual({ kind: 'env', envKey: 'MISSING_VAR' });
-    });
-
-    it('supports transform function', () => {
-      const env = { PORT: '3000' };
-      const result = envLayer(env, 'PORT', (v) => parseInt(v, 10));
-
-      expect(result.value).toBe(3000);
-    });
-  });
-
-  describe('source factory functions', () => {
-    it('creates CLI source', () => {
-      expect(cliSource('--model')).toEqual({ kind: 'cli', detail: '--model' });
-    });
-
-    it('creates settings source', () => {
-      expect(settingsSource('model.name')).toEqual({
-        kind: 'settings',
-        settingsPath: 'model.name',
-      });
-    });
-
-    it('creates default source', () => {
-      expect(defaultSource('my-default')).toEqual({
-        kind: 'default',
-        detail: 'my-default',
-      });
-    });
-  });
-});

packages/core/src/utils/configResolver.ts

@@ -1,222 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/**
- * Generic multi-source configuration resolver utilities.
- *
- * This module provides reusable tools for resolving configuration values
- * from multiple sources (CLI, env, settings, etc.) with priority ordering
- * and source tracking.
- */
-
-/**
- * Known source kinds for configuration values.
- * Extensible for domain-specific needs.
- */
-export type ConfigSourceKind =
-  | 'cli'
-  | 'env'
-  | 'settings'
-  | 'modelProviders'
-  | 'default'
-  | 'computed'
-  | 'programmatic'
-  | 'unknown';
-
-/**
- * Source metadata for a configuration value.
- * Tracks where the value came from for debugging and UI display.
- */
-export interface ConfigSource {
-  /** The kind/category of the source */
-  kind: ConfigSourceKind;
-  /** Additional detail about the source (e.g., '--model' for CLI) */
-  detail?: string;
-  /** Environment variable key if kind is 'env' */
-  envKey?: string;
-  /** Settings path if kind is 'settings' (e.g., 'model.name') */
-  settingsPath?: string;
-  /** Auth type if relevant (for modelProviders) */
-  authType?: string;
-  /** Model ID if relevant (for modelProviders) */
-  modelId?: string;
-  /** Indirect source - when a value is derived via another source */
-  via?: Omit<ConfigSource, 'via'>;
-}
-
-/**
- * Map of field names to their sources
- */
-export type ConfigSources = Record<string, ConfigSource>;
-
-/**
- * A configuration layer represents a potential source for a value.
- * Layers are evaluated in priority order (first non-undefined wins).
- */
-export interface ConfigLayer<T> {
-  /** The value from this layer (undefined means not present) */
-  value: T | undefined;
-  /** Source metadata for this layer */
-  source: ConfigSource;
-}
-
-/**
- * Result of resolving a single field
- */
-export interface ResolvedField<T> {
-  /** The resolved value */
-  value: T;
-  /** Source metadata indicating where the value came from */
-  source: ConfigSource;
-}
-
-/**
- * Resolve a single configuration field from multiple layers.
- *
- * Layers are evaluated in order. The first layer with a defined,
- * non-empty value wins. If no layer has a value, the default is used.
- *
- * @param layers - Configuration layers in priority order (highest first)
- * @param defaultValue - Default value if no layer provides one
- * @param defaultSource - Source metadata for the default value
- * @returns The resolved value and its source
- *
- * @example
- * ```typescript
- * const model = resolveField(
- *   [
- *     { value: argv.model, source: { kind: 'cli', detail: '--model' } },
- *     { value: env['OPENAI_MODEL'], source: { kind: 'env', envKey: 'OPENAI_MODEL' } },
- *     { value: settings.model, source: { kind: 'settings', settingsPath: 'model.name' } },
- *   ],
- *   'default-model',
- *   { kind: 'default', detail: 'default-model' }
- * );
- * ```
- */
-export function resolveField<T>(
-  layers: Array<ConfigLayer<T>>,
-  defaultValue: T,
-  defaultSource: ConfigSource = { kind: 'default' },
-): ResolvedField<T> {
-  for (const layer of layers) {
-    if (isValuePresent(layer.value)) {
-      return { value: layer.value, source: layer.source };
-    }
-  }
-  return { value: defaultValue, source: defaultSource };
-}
-
-/**
- * Resolve a field that may not have a default (optional field).
- *
- * @param layers - Configuration layers in priority order
- * @returns The resolved value and source, or undefined if not found
- */
-export function resolveOptionalField<T>(
-  layers: Array<ConfigLayer<T>>,
-): ResolvedField<T> | undefined {
-  for (const layer of layers) {
-    if (isValuePresent(layer.value)) {
-      return { value: layer.value, source: layer.source };
-    }
-  }
-  return undefined;
-}
-
-/**
- * Check if a value is "present" (not undefined, not null, not empty string).
- *
- * @param value - The value to check
- * @returns true if the value should be considered present
- */
-function isValuePresent<T>(value: T | undefined | null): value is T {
-  if (value === undefined || value === null) {
-    return false;
-  }
-  // Treat empty strings as not present
-  if (typeof value === 'string' && value.trim() === '') {
-    return false;
-  }
-  return true;
-}
-
-/**
- * Create a CLI source descriptor
- */
-export function cliSource(detail: string): ConfigSource {
-  return { kind: 'cli', detail };
-}
-
-/**
- * Create an environment variable source descriptor
- */
-function envSource(envKey: string): ConfigSource {
-  return { kind: 'env', envKey };
-}
-
-/**
- * Create a settings source descriptor
- */
-export function settingsSource(settingsPath: string): ConfigSource {
-  return { kind: 'settings', settingsPath };
-}
-
-/**
- * Create a modelProviders source descriptor
- */
-export function modelProvidersSource(
-  authType: string,
-  modelId: string,
-  detail?: string,
-): ConfigSource {
-  return { kind: 'modelProviders', authType, modelId, detail };
-}
-
-/**
- * Create a default value source descriptor
- */
-export function defaultSource(detail?: string): ConfigSource {
-  return { kind: 'default', detail };
-}
-
-/**
- * Create a computed value source descriptor
- */
-export function computedSource(detail?: string): ConfigSource {
-  return { kind: 'computed', detail };
-}
-
-/**
- * Create a layer from an environment variable
- */
-export function envLayer<T = string>(
-  env: Record<string, string | undefined>,
-  key: string,
-  transform?: (value: string) => T,
-): ConfigLayer<T> {
-  const rawValue = env[key];
-  const value =
-    rawValue !== undefined
-      ? transform
-        ? transform(rawValue)
-        : (rawValue as unknown as T)
-      : undefined;
-  return {
-    value,
-    source: envSource(key),
-  };
-}
-
-/**
- * Create a layer with a static value and source
- */
-export function layer<T>(
-  value: T | undefined,
-  source: ConfigSource,
-): ConfigLayer<T> {
-  return { value, source };
-}

packages/core/src/utils/editor.ts

@@ -36,7 +36,7 @@ interface DiffCommand {
   args: string[];
 }
 
-export function commandExists(cmd: string): boolean {
+function commandExists(cmd: string): boolean {
   try {
     execSync(
       process.platform === 'win32' ? `where.exe ${cmd}` : `command -v ${cmd}`,
@@ -52,7 +52,7 @@ export function commandExists(cmd: string): boolean {
  * Editor command configurations for different platforms.
  * Each editor can have multiple possible command names, listed in order of preference.
  */
-export const editorCommands: Record<
+const editorCommands: Record<
   EditorType,
   { win32: string[]; default: string[] }
 > = {

packages/core/src/utils/flashFallback.test.ts

@@ -0,0 +1,75 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { Config } from '../config/config.js';
+import fs from 'node:fs';
+import {
+  setSimulate429,
+  disableSimulationAfterFallback,
+  shouldSimulate429,
+  resetRequestCounter,
+} from './testUtils.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
+// Import the new types (Assuming this test file is in packages/core/src/utils/)
+import type { FallbackModelHandler } from '../fallback/types.js';
+
+vi.mock('node:fs');
+
+// Update the description to reflect that this tests the retry utility's integration
+describe('Retry Utility Fallback Integration', () => {
+  let config: Config;
+
+  beforeEach(() => {
+    vi.mocked(fs.existsSync).mockReturnValue(true);
+    vi.mocked(fs.statSync).mockReturnValue({
+      isDirectory: () => true,
+    } as fs.Stats);
+    config = new Config({
+      targetDir: '/test',
+      debugMode: false,
+      cwd: '/test',
+      model: 'gemini-2.5-pro',
+    });
+
+    // Reset simulation state for each test
+    setSimulate429(false);
+    resetRequestCounter();
+  });
+
+  // This test validates the Config's ability to store and execute the handler contract.
+  it('should execute the injected FallbackHandler contract correctly', async () => {
+    // Set up a minimal handler for testing, ensuring it matches the new type.
+    const fallbackHandler: FallbackModelHandler = async () => 'retry';
+
+    // Use the generalized setter
+    config.setFallbackModelHandler(fallbackHandler);
+
+    // Call the handler directly via the config property
+    const result = await config.fallbackModelHandler!(
+      'gemini-2.5-pro',
+      DEFAULT_GEMINI_FLASH_MODEL,
+    );
+
+    // Verify it returns the correct intent
+    expect(result).toBe('retry');
+  });
+
+  // This test validates the test utilities themselves.
+  it('should properly disable simulation state after fallback (Test Utility)', () => {
+    // Enable simulation
+    setSimulate429(true);
+
+    // Verify simulation is enabled
+    expect(shouldSimulate429()).toBe(true);
+
+    // Disable simulation after fallback
+    disableSimulationAfterFallback();
+
+    // Verify simulation is now disabled
+    expect(shouldSimulate429()).toBe(false);
+  });
+});

packages/core/src/utils/llm-edit-fixer.ts

@@ -8,7 +8,7 @@ import { createHash } from 'node:crypto';
 import { type Content, Type } from '@google/genai';
 import { type BaseLlmClient } from '../core/baseLlmClient.js';
 import { LruCache } from './LruCache.js';
-import { DEFAULT_QWEN_FLASH_MODEL } from '../config/models.js';
+import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
 import { promptIdContext } from './promptIdContext.js';
 
 const MAX_CACHE_SIZE = 50;
@@ -149,7 +149,7 @@ export async function FixLLMEditWithInstruction(
     contents,
     schema: SearchReplaceEditSchema,
     abortSignal,
-    model: DEFAULT_QWEN_FLASH_MODEL,
+    model: DEFAULT_GEMINI_FLASH_MODEL,
     systemInstruction: EDIT_SYS_PROMPT,
     promptId,
     maxAttempts: 1,

packages/core/src/utils/summarizer.ts

@@ -11,7 +11,7 @@ import type {
   GenerateContentResponse,
 } from '@google/genai';
 import type { GeminiClient } from '../core/client.js';
-import { DEFAULT_QWEN_FLASH_MODEL } from '../config/models.js';
+import { DEFAULT_GEMINI_FLASH_LITE_MODEL } from '../config/models.js';
 import { getResponseText, partToString } from './partUtils.js';
 
 /**
@@ -86,7 +86,7 @@ export async function summarizeToolOutput(
       contents,
       toolOutputSummarizerConfig,
       abortSignal,
-      DEFAULT_QWEN_FLASH_MODEL,
+      DEFAULT_GEMINI_FLASH_LITE_MODEL,
     )) as unknown as GenerateContentResponse;
     return getResponseText(parsedResponse) || textToSummarize;
   } catch (error) {

packages/test-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code-test-utils",
-  "version": "0.7.0",
+  "version": "0.6.1",
   "private": true,
   "main": "src/index.ts",
   "license": "Apache-2.0",

packages/vscode-ide-companion/package.json

@@ -2,7 +2,7 @@
   "name": "qwen-code-vscode-ide-companion",
   "displayName": "Qwen Code Companion",
   "description": "Enable Qwen Code with direct access to your VS Code workspace.",
-  "version": "0.7.0",
+  "version": "0.6.2",
   "publisher": "qwenlm",
   "icon": "assets/icon.png",
   "repository": {

packages/vscode-ide-companion/src/extension.ts

@@ -17,6 +17,7 @@ import {
 import { WebViewProvider } from './webview/WebViewProvider.js';
 import { registerNewCommands } from './commands/index.js';
 import { ReadonlyFileSystemProvider } from './services/readonlyFileSystemProvider.js';
+import { isWindows } from './utils/platform.js';
 
 const CLI_IDE_COMPANION_IDENTIFIER = 'qwenlm.qwen-code-vscode-ide-companion';
 const INFO_MESSAGE_SHOWN_KEY = 'qwenCodeInfoMessageShown';
@@ -312,13 +313,37 @@ export async function activate(context: vscode.ExtensionContext) {
             'qwen-cli',
             'cli.js',
           ).fsPath;
-          const quote = (s: string) => `"${s.replaceAll('"', '\\"')}"`;
-          const qwenCmd = `${quote(process.execPath)} ${quote(cliEntry)}`;
-          const terminal = vscode.window.createTerminal({
+          const execPath = process.execPath;
+          const lowerExecPath = execPath.toLowerCase();
+          const needsElectronRunAsNode =
+            lowerExecPath.includes('code') ||
+            lowerExecPath.includes('electron');
+
+          let qwenCmd: string;
+          const terminalOptions: vscode.TerminalOptions = {
             name: `Qwen Code (${selectedFolder.name})`,
             cwd: selectedFolder.uri.fsPath,
             location,
-          });
+          };
+
+          if (isWindows) {
+            // Use system Node via cmd.exe; avoid PowerShell parsing issues
+            const quoteCmd = (s: string) => `"${s.replace(/"/g, '""')}"`;
+            const cliQuoted = quoteCmd(cliEntry);
+            qwenCmd = `node ${cliQuoted}`;
+            terminalOptions.shellPath = process.env.ComSpec;
+          } else {
+            const quotePosix = (s: string) => `"${s.replace(/"/g, '\\"')}"`;
+            const baseCmd = `${quotePosix(execPath)} ${quotePosix(cliEntry)}`;
+            if (needsElectronRunAsNode) {
+              // macOS Electron helper needs ELECTRON_RUN_AS_NODE=1;
+              qwenCmd = `ELECTRON_RUN_AS_NODE=1 ${baseCmd}`;
+            } else {
+              qwenCmd = baseCmd;
+            }
+          }
+
+          const terminal = vscode.window.createTerminal(terminalOptions);
           terminal.show();
           terminal.sendText(qwenCmd);
         }

packages/vscode-ide-companion/src/services/acpMessageHandler.ts

@@ -26,6 +26,7 @@ import type {
 } from '../types/connectionTypes.js';
 import { AcpFileHandler } from '../services/acpFileHandler.js';
 import type { ChildProcess } from 'child_process';
+import { isWindows } from '../utils/platform.js';
 
 /**
  * ACP Message Handler Class
@@ -47,7 +48,7 @@ export class AcpMessageHandler {
   sendResponseMessage(child: ChildProcess | null, response: AcpResponse): void {
     if (child?.stdin) {
       const jsonString = JSON.stringify(response);
-      const lineEnding = process.platform === 'win32' ? '\r\n' : '\n';
+      const lineEnding = isWindows ? '\r\n' : '\n';
       child.stdin.write(jsonString + lineEnding);
     }
   }

packages/vscode-ide-companion/src/services/acpSessionManager.ts

@@ -19,6 +19,7 @@ import type { ApprovalModeValue } from '../types/approvalModeValueTypes.js';
 import { AGENT_METHODS } from '../constants/acpSchema.js';
 import type { PendingRequest } from '../types/connectionTypes.js';
 import type { ChildProcess } from 'child_process';
+import { isWindows } from '../utils/platform.js';
 
 /**
  * ACP Session Manager Class
@@ -102,7 +103,7 @@ export class AcpSessionManager {
   ): void {
     if (child?.stdin) {
       const jsonString = JSON.stringify(message);
-      const lineEnding = process.platform === 'win32' ? '\r\n' : '\n';
+      const lineEnding = isWindows ? '\r\n' : '\n';
       child.stdin.write(jsonString + lineEnding);
     }
   }

packages/vscode-ide-companion/src/utils/platform.ts

@@ -0,0 +1,8 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/** Whether the current platform is Windows */
+export const isWindows = process.platform === 'win32';

packages/vscode-ide-companion/src/webview/components/messages/toolcalls/Execute/Execute.css

@@ -61,11 +61,7 @@
 /* Truncated content styling */
 .execute-toolcall-row-content:not(.execute-toolcall-full) {
   max-height: 60px;
-  mask-image: linear-gradient(
-    to bottom,
-    var(--app-primary-background) 40px,
-    transparent 60px
-  );
+  mask-image: linear-gradient(to bottom, var(--app-primary-background) 40px, transparent 60px);
   overflow: hidden;
 }
 

scripts/unused-keys-only-in-locales.json

@@ -1,5 +1,5 @@
 {
-  "generatedAt": "2026-01-07T14:56:23.662Z",
+  "generatedAt": "2025-12-24T09:15:59.125Z",
   "keys": [
     "  - en-US: English",
     "  - zh-CN: Simplified Chinese",
@@ -9,9 +9,9 @@
     "Approval mode changed to: {{mode}} (saved to {{scope}} settings{{location}})",
     "Auto-edit mode - Automatically approve file edits",
     "Available approval modes:",
-    "Change auth (executes the /auth command)",
     "Chat history is already compressed.",
-    "Continue with {{model}}",
+    "Clearing terminal and resetting chat.",
+    "Clearing terminal.",
     "Conversation checkpoint '{{tag}}' has been deleted.",
     "Conversation checkpoint saved with tag: {{tag}}.",
     "Conversation shared to {{filePath}}",
@@ -24,7 +24,6 @@
     "Failed to change approval mode: {{error}}",
     "Failed to login. Message: {{message}}",
     "Failed to save approval mode: {{error}}",
-    "Failed to switch model to '{{modelId}}'.\n\n{{error}}",
     "Invalid file format. Only .md and .json are supported.",
     "Invalid language. Available: en-US, zh-CN",
     "List of saved conversations:",
@@ -44,7 +43,6 @@
     "Persist for this project/workspace",
     "Persist for this user on this machine",
     "Plan mode - Analyze only, do not modify files or execute commands",
-    "Pro quota limit reached for {{model}}.",
     "Qwen OAuth authentication cancelled.",
     "Qwen OAuth authentication timed out. Please try again.",
     "Resume a conversation from a checkpoint. Usage: /chat resume <tag>",
@@ -56,7 +54,8 @@
     "Share the current conversation to a markdown or json file. Usage: /chat share <file>",
     "Usage: /approval-mode <mode> [--session|--user|--project]",
     "Usage: /language ui [zh-CN|en-US]",
-    "YOLO mode - Automatically approve all tools"
+    "YOLO mode - Automatically approve all tools",
+    "clear the screen and conversation history"
   ],
-  "count": 56
+  "count": 55
 }