refactor(auth): 将 Linux DO OAuth 配置迁移到系统设置

- 将 LinuxDo Connect 配置从环境变量迁移到数据库持久化
- 在管理后台系统设置中添加 LinuxDo OAuth 配置项
- 简化部署流程，无需修改 docker-compose.override.yml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/api/admin/settings.ts

@@ -34,6 +34,11 @@ export interface SystemSettings {
   turnstile_enabled: boolean
   turnstile_site_key: string
   turnstile_secret_key_configured: boolean
+  // LinuxDo Connect OAuth login (end-user SSO)
+  linuxdo_connect_enabled: boolean
+  linuxdo_connect_client_id: string
+  linuxdo_connect_client_secret_configured: boolean
+  linuxdo_connect_redirect_url: string
   // Identity patch configuration (Claude -> Gemini)
   enable_identity_patch: boolean
   identity_patch_prompt: string
@@ -60,6 +65,10 @@ export interface UpdateSettingsRequest {
   turnstile_enabled?: boolean
   turnstile_site_key?: string
   turnstile_secret_key?: string
+  linuxdo_connect_enabled?: boolean
+  linuxdo_connect_client_id?: string
+  linuxdo_connect_client_secret?: string
+  linuxdo_connect_redirect_url?: string
   enable_identity_patch?: boolean
   identity_patch_prompt?: string
 }

frontend/src/i18n/locales/en.ts

@@ -1766,6 +1766,24 @@ export default {
         cloudflareDashboard: 'Cloudflare Dashboard',
         secretKeyHint: 'Server-side verification key (keep this secret)',
         secretKeyConfiguredHint: 'Secret key configured. Leave empty to keep the current value.'      },
+      linuxdo: {
+        title: 'LinuxDo Connect Login',
+        description: 'Configure LinuxDo Connect OAuth for Sub2API end-user login',
+        enable: 'Enable LinuxDo Login',
+        enableHint: 'Show LinuxDo login on the login/register pages',
+        clientId: 'Client ID',
+        clientIdPlaceholder: 'e.g., hprJ5pC3...',
+        clientIdHint: 'Get this from Connect.Linux.Do',
+        clientSecret: 'Client Secret',
+        clientSecretPlaceholder: '********',
+        clientSecretHint: 'Used by backend to exchange tokens (keep it secret)',
+        clientSecretConfiguredPlaceholder: '********',
+        clientSecretConfiguredHint: 'Secret configured. Leave empty to keep the current value.',
+        redirectUrl: 'Redirect URL',
+        redirectUrlPlaceholder: 'https://your-domain.com/api/v1/auth/oauth/linuxdo/callback',
+        redirectUrlHint:
+          'Must match the redirect URL configured in Connect.Linux.Do (must be an absolute http(s) URL)'
+      },
       defaults: {
         title: 'Default User Settings',
         description: 'Default values for new users',

frontend/src/i18n/locales/zh.ts

@@ -1911,6 +1911,23 @@ export default {
         cloudflareDashboard: 'Cloudflare Dashboard',
         secretKeyHint: '服务端验证密钥（请保密）',
         secretKeyConfiguredHint: '密钥已配置，留空以保留当前值。'      },
+      linuxdo: {
+        title: 'LinuxDo Connect 登录',
+        description: '配置 LinuxDo Connect OAuth，用于 Sub2API 用户登录',
+        enable: '启用 LinuxDo 登录',
+        enableHint: '在登录/注册页面显示 LinuxDo 登录入口',
+        clientId: 'Client ID',
+        clientIdPlaceholder: '例如：hprJ5pC3...',
+        clientIdHint: '从 Connect.Linux.Do 后台获取',
+        clientSecret: 'Client Secret',
+        clientSecretPlaceholder: '********',
+        clientSecretHint: '用于后端交换 token（请保密）',
+        clientSecretConfiguredPlaceholder: '********',
+        clientSecretConfiguredHint: '密钥已配置，留空以保留当前值。',
+        redirectUrl: '回调地址（Redirect URL）',
+        redirectUrlPlaceholder: 'https://your-domain.com/api/v1/auth/oauth/linuxdo/callback',
+        redirectUrlHint: '需与 Connect.Linux.Do 中配置的回调地址一致（必须是 http(s) 完整 URL）'
+      },
       defaults: {
         title: '用户默认设置',
         description: '新用户的默认值',

frontend/src/views/admin/SettingsView.vue

@@ -261,6 +261,91 @@
           </div>
         </div>
 
+        <!-- LinuxDo Connect OAuth Login -->
+        <div class="card">
+          <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+            <h2 class="text-lg font-semibold text-gray-900 dark:text-white">
+              {{ t('admin.settings.linuxdo.title') }}
+            </h2>
+            <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+              {{ t('admin.settings.linuxdo.description') }}
+            </p>
+          </div>
+          <div class="space-y-5 p-6">
+            <div class="flex items-center justify-between">
+              <div>
+                <label class="font-medium text-gray-900 dark:text-white">{{
+                  t('admin.settings.linuxdo.enable')
+                }}</label>
+                <p class="text-sm text-gray-500 dark:text-gray-400">
+                  {{ t('admin.settings.linuxdo.enableHint') }}
+                </p>
+              </div>
+              <Toggle v-model="form.linuxdo_connect_enabled" />
+            </div>
+
+            <div
+              v-if="form.linuxdo_connect_enabled"
+              class="border-t border-gray-100 pt-4 dark:border-dark-700"
+            >
+              <div class="grid grid-cols-1 gap-6">
+                <div>
+                  <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.settings.linuxdo.clientId') }}
+                  </label>
+                  <input
+                    v-model="form.linuxdo_connect_client_id"
+                    type="text"
+                    class="input font-mono text-sm"
+                    :placeholder="t('admin.settings.linuxdo.clientIdPlaceholder')"
+                  />
+                  <p class="mt-1.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{ t('admin.settings.linuxdo.clientIdHint') }}
+                  </p>
+                </div>
+
+                <div>
+                  <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.settings.linuxdo.clientSecret') }}
+                  </label>
+                  <input
+                    v-model="form.linuxdo_connect_client_secret"
+                    type="password"
+                    class="input font-mono text-sm"
+                    :placeholder="
+                      form.linuxdo_connect_client_secret_configured
+                        ? t('admin.settings.linuxdo.clientSecretConfiguredPlaceholder')
+                        : t('admin.settings.linuxdo.clientSecretPlaceholder')
+                    "
+                  />
+                  <p class="mt-1.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{
+                      form.linuxdo_connect_client_secret_configured
+                        ? t('admin.settings.linuxdo.clientSecretConfiguredHint')
+                        : t('admin.settings.linuxdo.clientSecretHint')
+                    }}
+                  </p>
+                </div>
+
+                <div>
+                  <label class="mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300">
+                    {{ t('admin.settings.linuxdo.redirectUrl') }}
+                  </label>
+                  <input
+                    v-model="form.linuxdo_connect_redirect_url"
+                    type="url"
+                    class="input font-mono text-sm"
+                    :placeholder="t('admin.settings.linuxdo.redirectUrlPlaceholder')"
+                  />
+                  <p class="mt-1.5 text-xs text-gray-500 dark:text-gray-400">
+                    {{ t('admin.settings.linuxdo.redirectUrlHint') }}
+                  </p>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+
         <!-- Default Settings -->
         <div class="card">
           <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
@@ -721,6 +806,7 @@ const newAdminApiKey = ref('')
 type SettingsForm = SystemSettings & {
   smtp_password: string
   turnstile_secret_key: string
+  linuxdo_connect_client_secret: string
 }
 
 const form = reactive<SettingsForm>({
@@ -747,6 +833,12 @@ const form = reactive<SettingsForm>({
   turnstile_site_key: '',
   turnstile_secret_key: '',
   turnstile_secret_key_configured: false,
+  // LinuxDo Connect OAuth
+  linuxdo_connect_enabled: false,
+  linuxdo_connect_client_id: '',
+  linuxdo_connect_client_secret: '',
+  linuxdo_connect_client_secret_configured: false,
+  linuxdo_connect_redirect_url: '',
   // Identity patch (Claude -> Gemini)
   enable_identity_patch: true,
   identity_patch_prompt: ''
@@ -797,6 +889,7 @@ async function loadSettings() {
     Object.assign(form, settings)
     form.smtp_password = ''
     form.turnstile_secret_key = ''
+    form.linuxdo_connect_client_secret = ''
   } catch (error: any) {
     appStore.showError(
       t('admin.settings.failedToLoad') + ': ' + (error.message || t('common.unknownError'))
@@ -829,12 +922,17 @@ async function saveSettings() {
       smtp_use_tls: form.smtp_use_tls,
       turnstile_enabled: form.turnstile_enabled,
       turnstile_site_key: form.turnstile_site_key,
-      turnstile_secret_key: form.turnstile_secret_key || undefined
+      turnstile_secret_key: form.turnstile_secret_key || undefined,
+      linuxdo_connect_enabled: form.linuxdo_connect_enabled,
+      linuxdo_connect_client_id: form.linuxdo_connect_client_id,
+      linuxdo_connect_client_secret: form.linuxdo_connect_client_secret || undefined,
+      linuxdo_connect_redirect_url: form.linuxdo_connect_redirect_url
     }
     const updated = await adminAPI.settings.updateSettings(payload)
     Object.assign(form, updated)
     form.smtp_password = ''
     form.turnstile_secret_key = ''
+    form.linuxdo_connect_client_secret = ''
     // Refresh cached public settings so sidebar/header update immediately
     await appStore.fetchPublicSettings(true)
     appStore.showSuccess(t('admin.settings.settingsSaved'))