feat(全栈): 实现简易模式核心功能

**功能概述**：
实现简易模式(Simple Mode)，为个人用户和小团队提供简化的使用体验，隐藏复杂的分组、订阅、配额等概念。

**后端改动**：
1. 配置系统
   - 新增 run_mode 配置项（standard/simple）
   - 支持环境变量 RUN_MODE
   - 默认值为 standard

2. 数据库初始化
   - 自动创建3个默认分组：anthropic-default、openai-default、gemini-default
   - 默认分组配置：无并发限制、active状态、非独占
   - 幂等性保证：重复启动不会重复创建

3. 账号管理
   - 创建账号时自动绑定对应平台的默认分组
   - 如果未指定分组，自动查找并绑定默认分组

**前端改动**：
1. 状态管理
   - authStore 新增 isSimpleMode 计算属性
   - 从后端API获取并同步运行模式

2. UI隐藏
   - 侧边栏：隐藏分组管理、订阅管理、兑换码菜单
   - 账号管理页面：隐藏分组列
   - 创建/编辑账号对话框：隐藏分组选择器

3. 路由守卫
   - 限制访问分组、订阅、兑换码相关页面
   - 访问受限页面时自动重定向到仪表板

**配置示例**：
```yaml
run_mode: simple

run_mode: standard
```

**影响范围**：
- 后端：配置、数据库迁移、账号服务
- 前端：认证状态、路由、UI组件
- 部署：配置文件示例

**兼容性**：
- 简易模式和标准模式可无缝切换
- 不需要数据迁移
- 现有数据不受影响

frontend/src/api/auth.ts

@@ -8,7 +8,7 @@ import type {
   LoginRequest,
   RegisterRequest,
   AuthResponse,
-  User,
+  CurrentUserResponse,
   SendVerifyCodeRequest,
   SendVerifyCodeResponse,
   PublicSettings
@@ -70,9 +70,8 @@ export async function register(userData: RegisterRequest): Promise<AuthResponse>
  * Get current authenticated user
  * @returns User profile data
  */
-export async function getCurrentUser(): Promise<User> {
-  const { data } = await apiClient.get<User>('/auth/me')
-  return data
+export async function getCurrentUser() {
+  return apiClient.get<CurrentUserResponse>('/auth/me')
 }
 
 /**

frontend/src/components/account/CreateAccountModal.vue

@@ -964,8 +964,13 @@
         </div>
       </div>
 
-      <!-- Group Selection -->
-      <GroupSelector v-model="form.group_ids" :groups="groups" :platform="form.platform" />
+      <!-- Group Selection - 仅标准模式显示 -->
+      <GroupSelector
+        v-if="!authStore.isSimpleMode"
+        v-model="form.group_ids"
+        :groups="groups"
+        :platform="form.platform"
+      />
 
     </form>
 
@@ -1076,6 +1081,7 @@
 import { ref, reactive, computed, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
+import { useAuthStore } from '@/stores/auth'
 import { adminAPI } from '@/api/admin'
 import {
   useAccountOAuth,
@@ -1102,6 +1108,7 @@ interface OAuthFlowExposed {
 }
 
 const { t } = useI18n()
+const authStore = useAuthStore()
 
 const oauthStepTitle = computed(() => {
   if (form.platform === 'openai') return t('admin.accounts.oauth.openai.title')

frontend/src/components/account/EditAccountModal.vue

@@ -466,8 +466,13 @@
         <Select v-model="form.status" :options="statusOptions" />
       </div>
 
-      <!-- Group Selection -->
-      <GroupSelector v-model="form.group_ids" :groups="groups" :platform="account?.platform" />
+      <!-- Group Selection - 仅标准模式显示 -->
+      <GroupSelector
+        v-if="!authStore.isSimpleMode"
+        v-model="form.group_ids"
+        :groups="groups"
+        :platform="account?.platform"
+      />
 
     </form>
 
@@ -513,6 +518,7 @@
 import { ref, reactive, computed, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
+import { useAuthStore } from '@/stores/auth'
 import { adminAPI } from '@/api/admin'
 import type { Account, Proxy, Group } from '@/types'
 import BaseDialog from '@/components/common/BaseDialog.vue'
@@ -535,6 +541,7 @@ const emit = defineEmits<{
 
 const { t } = useI18n()
 const appStore = useAppStore()
+const authStore = useAuthStore()
 
 // Platform-specific hint for Base URL
 const baseUrlHint = computed(() => {

frontend/src/components/layout/AppSidebar.vue

@@ -432,8 +432,8 @@ const adminNavItems = computed(() => {
   const baseItems = [
     { path: '/admin/dashboard', label: t('nav.dashboard'), icon: DashboardIcon },
     { path: '/admin/users', label: t('nav.users'), icon: UsersIcon, hideInSimpleMode: true },
-    { path: '/admin/groups', label: t('nav.groups'), icon: FolderIcon },
-    { path: '/admin/subscriptions', label: t('nav.subscriptions'), icon: CreditCardIcon },
+    { path: '/admin/groups', label: t('nav.groups'), icon: FolderIcon, hideInSimpleMode: true },
+    { path: '/admin/subscriptions', label: t('nav.subscriptions'), icon: CreditCardIcon, hideInSimpleMode: true },
     { path: '/admin/accounts', label: t('nav.accounts'), icon: GlobeIcon },
     { path: '/admin/proxies', label: t('nav.proxies'), icon: ServerIcon },
     { path: '/admin/redeem', label: t('nav.redeemCodes'), icon: TicketIcon, hideInSimpleMode: true },

frontend/src/router/index.ts

@@ -341,6 +341,23 @@ router.beforeEach((to, _from, next) => {
     return
   }
 
+  // 简易模式下限制访问某些页面
+  if (authStore.isSimpleMode) {
+    const restrictedPaths = [
+      '/admin/groups',
+      '/admin/subscriptions',
+      '/admin/redeem',
+      '/subscriptions',
+      '/redeem'
+    ]
+
+    if (restrictedPaths.some((path) => to.path.startsWith(path))) {
+      // 简易模式下访问受限页面,重定向到仪表板
+      next(authStore.isAdmin ? '/admin/dashboard' : '/dashboard')
+      return
+    }
+  }
+
   // All checks passed, allow navigation
   next()
 })

frontend/src/stores/auth.ts

@@ -4,7 +4,7 @@
  */
 
 import { defineStore } from 'pinia'
-import { ref, computed } from 'vue'
+import { ref, computed, readonly } from 'vue'
 import { authAPI } from '@/api'
 import type { User, LoginRequest, RegisterRequest } from '@/types'
 
@@ -17,6 +17,7 @@ export const useAuthStore = defineStore('auth', () => {
 
   const user = ref<User | null>(null)
   const token = ref<string | null>(null)
+  const runMode = ref<'standard' | 'simple'>('standard')
   let refreshIntervalId: ReturnType<typeof setInterval> | null = null
 
   // ==================== Computed ====================
@@ -29,6 +30,8 @@ export const useAuthStore = defineStore('auth', () => {
     return user.value?.role === 'admin'
   })
 
+  const isSimpleMode = computed(() => runMode.value === 'simple')
+
   // ==================== Actions ====================
 
   /**
@@ -168,13 +171,17 @@ export const useAuthStore = defineStore('auth', () => {
     }
 
     try {
-      const updatedUser = await authAPI.getCurrentUser()
-      user.value = updatedUser
+      const response = await authAPI.getCurrentUser()
+      if (response.data.run_mode) {
+        runMode.value = response.data.run_mode
+      }
+      const { run_mode, ...userData } = response.data
+      user.value = userData
 
       // Update localStorage
-      localStorage.setItem(AUTH_USER_KEY, JSON.stringify(updatedUser))
+      localStorage.setItem(AUTH_USER_KEY, JSON.stringify(userData))
 
-      return updatedUser
+      return userData
     } catch (error) {
       // If refresh fails with 401, clear auth state
       if ((error as { status?: number }).status === 401) {
@@ -204,10 +211,12 @@ export const useAuthStore = defineStore('auth', () => {
     // State
     user,
     token,
+    runMode: readonly(runMode),
 
     // Computed
     isAuthenticated,
     isAdmin,
+    isSimpleMode,
 
     // Actions
     login,

frontend/src/types/index.ts

@@ -64,6 +64,10 @@ export interface AuthResponse {
   user: User
 }
 
+export interface CurrentUserResponse extends User {
+  run_mode?: 'standard' | 'simple'
+}
+
 // ==================== Subscription Types ====================
 
 export interface Subscription {

frontend/src/views/admin/AccountsView.vue

@@ -494,6 +494,7 @@
 import { ref, reactive, computed, onMounted, onUnmounted, type ComponentPublicInstance } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
+import { useAuthStore } from '@/stores/auth'
 import { adminAPI } from '@/api/admin'
 import type { Account, Proxy, Group } from '@/types'
 import type { Column } from '@/components/common/types'
@@ -522,22 +523,34 @@ import { formatRelativeTime } from '@/utils/format'
 
 const { t } = useI18n()
 const appStore = useAppStore()
+const authStore = useAuthStore()
 
 // Table columns
-const columns = computed<Column[]>(() => [
-  { key: 'select', label: '', sortable: false },
-  { key: 'name', label: t('admin.accounts.columns.name'), sortable: true },
-  { key: 'platform_type', label: t('admin.accounts.columns.platformType'), sortable: false },
-  { key: 'concurrency', label: t('admin.accounts.columns.concurrencyStatus'), sortable: false },
-  { key: 'status', label: t('admin.accounts.columns.status'), sortable: true },
-  { key: 'schedulable', label: t('admin.accounts.columns.schedulable'), sortable: true },
-  { key: 'today_stats', label: t('admin.accounts.columns.todayStats'), sortable: false },
-  { key: 'groups', label: t('admin.accounts.columns.groups'), sortable: false },
-  { key: 'usage', label: t('admin.accounts.columns.usageWindows'), sortable: false },
-  { key: 'priority', label: t('admin.accounts.columns.priority'), sortable: true },
-  { key: 'last_used_at', label: t('admin.accounts.columns.lastUsed'), sortable: true },
-  { key: 'actions', label: t('admin.accounts.columns.actions'), sortable: false }
-])
+const columns = computed<Column[]>(() => {
+  const cols: Column[] = [
+    { key: 'select', label: '', sortable: false },
+    { key: 'name', label: t('admin.accounts.columns.name'), sortable: true },
+    { key: 'platform_type', label: t('admin.accounts.columns.platformType'), sortable: false },
+    { key: 'concurrency', label: t('admin.accounts.columns.concurrencyStatus'), sortable: false },
+    { key: 'status', label: t('admin.accounts.columns.status'), sortable: true },
+    { key: 'schedulable', label: t('admin.accounts.columns.schedulable'), sortable: true },
+    { key: 'today_stats', label: t('admin.accounts.columns.todayStats'), sortable: false }
+  ]
+
+  // 简易模式下不显示分组列
+  if (!authStore.isSimpleMode) {
+    cols.push({ key: 'groups', label: t('admin.accounts.columns.groups'), sortable: false })
+  }
+
+  cols.push(
+    { key: 'usage', label: t('admin.accounts.columns.usageWindows'), sortable: false },
+    { key: 'priority', label: t('admin.accounts.columns.priority'), sortable: true },
+    { key: 'last_used_at', label: t('admin.accounts.columns.lastUsed'), sortable: true },
+    { key: 'actions', label: t('admin.accounts.columns.actions'), sortable: false }
+  )
+
+  return cols
+})
 
 // Filter options
 const platformOptions = computed(() => [