feat(ai): add Atlas Cloud provider preset (#915)

## Background

GoNavi supports OpenAI-compatible providers, but Atlas Cloud currently
requires users to enter the endpoint and model manually. This adds a
first-class preset while keeping the existing OpenAI-compatible runtime
and remote model discovery path.

## Changes

- add an Atlas Cloud provider preset with the default API endpoint and
`qwen/qwen3.8-max`
- recognize saved Atlas Cloud endpoints when reopening AI settings
- add localized provider labels and descriptions for all supported
locales
- cover preset metadata and endpoint matching with focused tests

## Impact

The change is additive. Existing providers and custom OpenAI-compatible
configurations are unchanged. Users still supply their own API key.

## Validation

- frontend focused tests: 39 passed
- frontend full test suite: passed
- frontend production build: passed
- `go test ./internal/ai/provider ./internal/ai/service`: passed
- Atlas Cloud `/models`: HTTP 200 and `qwen/qwen3.8-max` present
- Atlas Cloud Chat Completions smoke test: HTTP 200
- `git diff --check`: passed

## Risk and rollback

Risk is limited to the additive preset metadata and endpoint matching.
Reverting this commit removes the preset without changing persisted
provider schema or backend behavior.

frontend/src/components/ai/aiSettingsModalConfig.test.tsx

@@ -1,6 +1,8 @@
 import { describe, expect, it } from 'vitest';
 
 import {
+  ATLAS_CLOUD_BASE_URL,
+  ATLAS_CLOUD_DEFAULT_MODEL,
   QWEN_CODING_PLAN_ANTHROPIC_BASE_URL,
   resolvePresetBaseURL,
   resolvePresetTransport,
@@ -53,6 +55,21 @@ describe('aiSettingsModalConfig', () => {
     expect(preset.key).toBe('cursor');
   });
 
+  it('exposes and recognizes the Atlas Cloud preset', () => {
+    const preset = findPreset('atlascloud');
+
+    expect(preset).toMatchObject({
+      label: 'Atlas Cloud',
+      backendType: 'openai',
+      defaultBaseUrl: ATLAS_CLOUD_BASE_URL,
+      defaultModel: ATLAS_CLOUD_DEFAULT_MODEL,
+    });
+    expect(matchProviderPreset({
+      type: 'openai',
+      baseUrl: ATLAS_CLOUD_BASE_URL,
+    }).key).toBe('atlascloud');
+  });
+
   it('supports every configured MiniMax region and protocol endpoint', () => {
     const preset = findPreset('minimax');
 
@@ -125,6 +142,7 @@ describe('aiSettingsModalConfig', () => {
   });
 
   it('keeps the provider preset list available for the settings modal', () => {
+    expect(PROVIDER_PRESETS.some((item) => item.key === 'atlascloud')).toBe(true);
     expect(PROVIDER_PRESETS.some((item) => item.key === 'codex')).toBe(true);
     expect(PROVIDER_PRESETS.some((item) => item.key === 'claude-subscription')).toBe(true);
     expect(PROVIDER_PRESETS.some((item) => item.key === 'codebuddy')).toBe(true);

frontend/src/components/ai/aiSettingsModalConfig.tsx

@@ -16,6 +16,8 @@ import type {
   AIUserPromptSettings,
 } from '../../types';
 import {
+  ATLAS_CLOUD_BASE_URL,
+  ATLAS_CLOUD_DEFAULT_MODEL,
   QWEN_BAILIAN_ANTHROPIC_BASE_URL,
   QWEN_CODING_PLAN_ANTHROPIC_BASE_URL,
   QWEN_CODING_PLAN_MODELS,
@@ -50,6 +52,7 @@ export const MINIMAX_ENDPOINTS: ProviderPresetEndpoint[] = [
 
 export const PROVIDER_PRESETS: ProviderPreset[] = [
   { key: 'openai', label: 'OpenAI', labelKey: 'ai_settings.provider_preset.openai.label', icon: <ApiOutlined />, desc: 'GPT-5.4 / 5.3 series', descKey: 'ai_settings.provider_preset.openai.desc', color: '#10b981', backendType: 'openai', defaultBaseUrl: 'https://api.openai.com/v1', defaultModel: 'gpt-4o', models: [] },
+  { key: 'atlascloud', label: 'Atlas Cloud', labelKey: 'ai_settings.provider_preset.atlascloud.label', icon: <CloudOutlined />, desc: 'Qwen3.8 Max / OpenAI-compatible', descKey: 'ai_settings.provider_preset.atlascloud.desc', color: '#0891b2', backendType: 'openai', defaultBaseUrl: ATLAS_CLOUD_BASE_URL, defaultModel: ATLAS_CLOUD_DEFAULT_MODEL, models: [] },
   { key: 'codex', label: 'Codex Subscription', labelKey: 'ai_settings.provider_preset.codex.label', icon: <ApiOutlined />, desc: 'Local Codex CLI / ChatGPT subscription login', descKey: 'ai_settings.provider_preset.codex.desc', color: '#111827', backendType: 'custom', fixedApiFormat: 'codex-cli', authMode: 'local-cli', defaultBaseUrl: '', defaultModel: '', models: [] },
   { key: 'deepseek', label: 'DeepSeek', labelKey: 'ai_settings.provider_preset.deepseek.label', icon: <ThunderboltOutlined />, desc: 'DeepSeek-V4 / R1', descKey: 'ai_settings.provider_preset.deepseek.desc', color: '#3b82f6', backendType: 'openai', defaultBaseUrl: 'https://api.deepseek.com/v1', defaultModel: 'deepseek-chat', models: [] },
   { key: 'qwen-bailian', label: 'Qwen (Bailian General)', labelKey: 'ai_settings.provider_preset.qwen_bailian.label', icon: <CloudOutlined />, desc: 'Bailian Anthropic-compatible endpoint / remote model list', descKey: 'ai_settings.provider_preset.qwen_bailian.desc', color: '#6366f1', backendType: 'anthropic', defaultBaseUrl: QWEN_BAILIAN_ANTHROPIC_BASE_URL, defaultModel: '', models: [] },

frontend/src/utils/aiProviderPresets.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest';
 import type { AIProviderAuthMode, AIProviderType } from '../types';
 import {
+  ATLAS_CLOUD_BASE_URL,
   LEGACY_QWEN_CODING_PLAN_OPENAI_BASE_URL,
   QWEN_BAILIAN_ANTHROPIC_BASE_URL,
   QWEN_BAILIAN_MODELS_BASE_URL,
@@ -24,6 +25,7 @@ type PresetMatcher = {
 
 const PRESETS: PresetMatcher[] = [
   { key: 'openai', backendType: 'openai', defaultBaseUrl: 'https://api.openai.com/v1' },
+  { key: 'atlascloud', backendType: 'openai', defaultBaseUrl: ATLAS_CLOUD_BASE_URL },
   { key: 'qwen-bailian', backendType: 'anthropic', defaultBaseUrl: QWEN_BAILIAN_ANTHROPIC_BASE_URL },
   {
     key: 'qwen-coding-plan',
@@ -212,6 +214,13 @@ describe('ai provider preset helpers', () => {
 });
 
 describe('resolveProviderPresetKey', () => {
+  it('recognizes Atlas Cloud by its OpenAI-compatible endpoint', () => {
+    expect(resolveProviderPresetKey({
+      type: 'openai',
+      baseUrl: `${ATLAS_CLOUD_BASE_URL}/`,
+    }, PRESETS, 'custom')).toBe('atlascloud');
+  });
+
   it('不会把自定义 OpenAI 端点误识别成千问 Coding Plan', () => {
     const key = resolveProviderPresetKey(
       {

frontend/src/utils/aiProviderPresets.ts

@@ -5,6 +5,8 @@ export const LEGACY_QWEN_CODING_PLAN_OPENAI_BASE_URL = 'https://coding.dashscope
 export const QWEN_BAILIAN_ANTHROPIC_BASE_URL = 'https://dashscope.aliyuncs.com/apps/anthropic';
 export const QWEN_CODING_PLAN_ANTHROPIC_BASE_URL = 'https://coding.dashscope.aliyuncs.com/apps/anthropic';
 export const QWEN_BAILIAN_MODELS_BASE_URL = LEGACY_QWEN_BAILIAN_OPENAI_BASE_URL;
+export const ATLAS_CLOUD_BASE_URL = 'https://api.atlascloud.ai/v1';
+export const ATLAS_CLOUD_DEFAULT_MODEL = 'qwen/qwen3.8-max';
 
 export const QWEN_CODING_PLAN_MODELS = [
   'qwen3.5-plus',

shared/i18n/de-DE.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "Kein Modell ausgewählt",
   "ai_settings.provider_preset.anthropic.desc": "Claude Opus/Sonnet Modelle",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / OpenAI-kompatibel",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "Lokale Claude Code CLI / Claude-Abonnementanmeldung",
   "ai_settings.provider_preset.claude_subscription.label": "Claude-Abonnement",
   "ai_settings.provider_preset.codex.desc": "Lokale Codex CLI / ChatGPT-Abonnementanmeldung",

shared/i18n/en-US.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "No model selected",
   "ai_settings.provider_preset.anthropic.desc": "Claude Opus/Sonnet",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / OpenAI-compatible",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "Local Claude Code CLI / Claude subscription login",
   "ai_settings.provider_preset.claude_subscription.label": "Claude Subscription",
   "ai_settings.provider_preset.codex.desc": "Local Codex CLI / ChatGPT subscription login",

shared/i18n/ja-JP.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "モデル未選択",
   "ai_settings.provider_preset.anthropic.desc": "Claude Opus/Sonnet モデル",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / OpenAI 互換",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "ローカル Claude Code CLI / Claude サブスクリプションログイン",
   "ai_settings.provider_preset.claude_subscription.label": "Claude サブスクリプション",
   "ai_settings.provider_preset.codex.desc": "ローカル Codex CLI / ChatGPT サブスクリプションログイン",

shared/i18n/ru-RU.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "Модель не выбрана",
   "ai_settings.provider_preset.anthropic.desc": "Модели Claude Opus/Sonnet",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / совместимо с OpenAI",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "Локальный Claude Code CLI / вход по подписке Claude",
   "ai_settings.provider_preset.claude_subscription.label": "Подписка Claude",
   "ai_settings.provider_preset.codex.desc": "Локальный Codex CLI / вход по подписке ChatGPT",

shared/i18n/zh-CN.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "未选择模型",
   "ai_settings.provider_preset.anthropic.desc": "Claude Opus/Sonnet 模型",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / OpenAI 兼容",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "本机 Claude Code CLI / Claude 订阅登录态",
   "ai_settings.provider_preset.claude_subscription.label": "Claude 订阅",
   "ai_settings.provider_preset.codex.desc": "本机 Codex CLI / ChatGPT 订阅登录态",

shared/i18n/zh-TW.json

@@ -2352,6 +2352,8 @@
   "ai_settings.provider.no_model": "尚未選擇模型",
   "ai_settings.provider_preset.anthropic.desc": "Claude Opus/Sonnet 模型",
   "ai_settings.provider_preset.anthropic.label": "Claude",
+  "ai_settings.provider_preset.atlascloud.desc": "Qwen3.8 Max / OpenAI 相容",
+  "ai_settings.provider_preset.atlascloud.label": "Atlas Cloud",
   "ai_settings.provider_preset.claude_subscription.desc": "本機 Claude Code CLI / Claude 訂閱登入狀態",
   "ai_settings.provider_preset.claude_subscription.label": "Claude 訂閱",
   "ai_settings.provider_preset.codex.desc": "本機 Codex CLI / ChatGPT 訂閱登入狀態",