feat: 实现OpenAI账户管理和统一调度系统

- 新增 OpenAI 账户管理服务，支持多账户轮询和负载均衡
- 实现统一的 OpenAI API 调度器，智能选择最优账户
- 优化成本计算器，支持更精确的 token 计算
- 更新模型定价数据，包含最新的 OpenAI 模型价格
- 增强 API Key 管理，支持更灵活的配额控制
- 改进管理界面，添加教程视图和账户分组管理
- 优化限流配置组件，提供更直观的用户体验

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

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

web/admin-spa/src/components/apikeys/CreateApiKeyModal.vue

@@ -371,6 +371,10 @@
                 <input v-model="form.permissions" class="mr-2" type="radio" value="gemini" />
                 <span class="text-sm text-gray-700">仅 Gemini</span>
               </label>
+              <label class="flex cursor-pointer items-center">
+                <input v-model="form.permissions" class="mr-2" type="radio" value="openai" />
+                <span class="text-sm text-gray-700">仅 OpenAI</span>
+              </label>
             </div>
             <p class="mt-2 text-xs text-gray-500">控制此 API Key 可以访问哪些服务</p>
           </div>
@@ -402,7 +406,7 @@
                   v-model="form.claudeAccountId"
                   :accounts="localAccounts.claude"
                   default-option-text="使用共享账号池"
-                  :disabled="form.permissions === 'gemini'"
+                  :disabled="form.permissions === 'gemini' || form.permissions === 'openai'"
                   :groups="localAccounts.claudeGroups"
                   placeholder="请选择Claude账号"
                   platform="claude"
@@ -414,12 +418,24 @@
                   v-model="form.geminiAccountId"
                   :accounts="localAccounts.gemini"
                   default-option-text="使用共享账号池"
-                  :disabled="form.permissions === 'claude'"
+                  :disabled="form.permissions === 'claude' || form.permissions === 'openai'"
                   :groups="localAccounts.geminiGroups"
                   placeholder="请选择Gemini账号"
                   platform="gemini"
                 />
               </div>
+              <div>
+                <label class="mb-1 block text-sm font-medium text-gray-600">OpenAI 专属账号</label>
+                <AccountSelector
+                  v-model="form.openaiAccountId"
+                  :accounts="localAccounts.openai"
+                  default-option-text="使用共享账号池"
+                  :disabled="form.permissions === 'claude' || form.permissions === 'gemini'"
+                  :groups="localAccounts.openaiGroups"
+                  placeholder="请选择OpenAI账号"
+                  platform="openai"
+                />
+              </div>
             </div>
             <p class="mt-2 text-xs text-gray-500">
               选择专属账号后，此API Key将只使用该账号，不选择则使用共享账号池
@@ -598,7 +614,14 @@ const clientsStore = useClientsStore()
 const apiKeysStore = useApiKeysStore()
 const loading = ref(false)
 const accountsLoading = ref(false)
-const localAccounts = ref({ claude: [], gemini: [], claudeGroups: [], geminiGroups: [] })
+const localAccounts = ref({
+  claude: [],
+  gemini: [],
+  openai: [],
+  claudeGroups: [],
+  geminiGroups: [],
+  openaiGroups: []
+})
 
 // 表单验证状态
 const errors = ref({
@@ -634,6 +657,7 @@ const form = reactive({
   permissions: 'all',
   claudeAccountId: '',
   geminiAccountId: '',
+  openaiAccountId: '',
   enableModelRestriction: false,
   restrictedModels: [],
   modelInput: '',
@@ -651,8 +675,10 @@ onMounted(async () => {
     localAccounts.value = {
       claude: props.accounts.claude || [],
       gemini: props.accounts.gemini || [],
+      openai: props.accounts.openai || [],
       claudeGroups: props.accounts.claudeGroups || [],
-      geminiGroups: props.accounts.geminiGroups || []
+      geminiGroups: props.accounts.geminiGroups || [],
+      openaiGroups: props.accounts.openaiGroups || []
     }
   }
 })
@@ -661,10 +687,11 @@ onMounted(async () => {
 const refreshAccounts = async () => {
   accountsLoading.value = true
   try {
-    const [claudeData, claudeConsoleData, geminiData, groupsData] = await Promise.all([
+    const [claudeData, claudeConsoleData, geminiData, openaiData, groupsData] = await Promise.all([
       apiClient.get('/admin/claude-accounts'),
       apiClient.get('/admin/claude-console-accounts'),
       apiClient.get('/admin/gemini-accounts'),
+      apiClient.get('/admin/openai-accounts'),
       apiClient.get('/admin/account-groups')
     ])
 
@@ -700,11 +727,19 @@ const refreshAccounts = async () => {
       }))
     }
 
+    if (openaiData.success) {
+      localAccounts.value.openai = (openaiData.data || []).map((account) => ({
+        ...account,
+        isDedicated: account.accountType === 'dedicated' // 保留以便向后兼容
+      }))
+    }
+
     // 处理分组数据
     if (groupsData.success) {
       const allGroups = groupsData.data || []
       localAccounts.value.claudeGroups = allGroups.filter((g) => g.platform === 'claude')
       localAccounts.value.geminiGroups = allGroups.filter((g) => g.platform === 'gemini')
+      localAccounts.value.openaiGroups = allGroups.filter((g) => g.platform === 'openai')
     }
 
     showToast('账号列表已刷新', 'success')
@@ -899,6 +934,11 @@ const createApiKey = async () => {
       baseData.geminiAccountId = form.geminiAccountId
     }
 
+    // OpenAI账户绑定
+    if (form.openaiAccountId) {
+      baseData.openaiAccountId = form.openaiAccountId
+    }
+
     if (form.createType === 'single') {
       // 单个创建
       const data = {