feat: add configurable provider endpoint for codex-api accounts

Add providerEndpoint field (responses/completions/auto) to openai-responses
accounts, allowing admins to specify which API endpoint format the provider
supports. The relay service normalizes request paths based on this config:
- responses (default): routes all requests to /v1/responses
- completions: routes all requests to /v1/chat/completions
- auto: preserves the original request path

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/services/account/openaiResponsesAccountService.js

@@ -51,7 +51,8 @@ class OpenAIResponsesAccountService {
       dailyQuota = 0, // 每日额度限制（美元），0表示不限制
       quotaResetTime = '00:00', // 额度重置时间（HH:mm格式）
       rateLimitDuration = 60, // 限流时间（分钟）
-      disableAutoProtection = false // 是否关闭自动防护（429/401/400/529 不自动禁用）
+      disableAutoProtection = false, // 是否关闭自动防护（429/401/400/529 不自动禁用）
+      providerEndpoint = 'responses' // Provider 端点类型：responses | completions | auto
     } = options
 
     // 验证必填字段
@@ -96,7 +97,8 @@ class OpenAIResponsesAccountService {
       lastResetDate: redis.getDateStringInTimezone(),
       quotaResetTime,
       quotaStoppedAt: '',
-      disableAutoProtection: disableAutoProtection.toString() // 关闭自动防护
+      disableAutoProtection: disableAutoProtection.toString(), // 关闭自动防护
+      providerEndpoint // Provider 端点类型：responses(默认) | completions | auto
     }
 
     // 保存到 Redis

src/services/relay/openaiResponsesRelayService.js

@@ -91,8 +91,22 @@ class OpenAIResponsesRelayService {
       req.once('close', handleClientDisconnect)
       res.once('close', handleClientDisconnect)
 
-      // 构建目标 URL
+      // 构建目标 URL（根据 providerEndpoint 配置决定端点路径）
-      const targetUrl = `${fullAccount.baseApi}${req.path}`
+      const providerEndpoint = fullAccount.providerEndpoint || 'responses'
+      let targetPath = req.path
+      if (providerEndpoint === 'responses' && targetPath.includes('/completions')) {
+        // Provider 仅支持 Responses 端点，将 completions 路径归一化
+        targetPath = '/v1/responses'
+        logger.info(`📝 Normalized path (${req.path}) → /v1/responses (providerEndpoint=responses)`)
+      } else if (providerEndpoint === 'completions' && targetPath.includes('/responses')) {
+        // Provider 仅支持 Completions 端点，将 responses 路径归一化
+        targetPath = '/v1/chat/completions'
+        logger.info(
+          `📝 Normalized path (${req.path}) → /v1/chat/completions (providerEndpoint=completions)`
+        )
+      }
+      // providerEndpoint === 'auto' 时保持原始路径不变
+      const targetUrl = `${fullAccount.baseApi}${targetPath}`
       logger.info(`🎯 Forwarding to: ${targetUrl}`)
 
       // 构建请求头 - 使用统一的 headerFilter 移除 CDN headers

web/admin-spa/src/components/accounts/AccountForm.vue

@@ -1692,6 +1692,24 @@
                 </p>
               </div>
 
+              <div>
+                <label class="mb-3 block text-sm font-semibold text-gray-700 dark:text-gray-300"
+                  >Provider 端点类型</label
+                >
+                <select
+                  v-model="form.providerEndpoint"
+                  class="form-input w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200"
+                >
+                  <option value="responses">Responses（推荐）</option>
+                  <option value="completions">Chat Completions</option>
+                  <option value="auto">自动（保持原始路径）</option>
+                </select>
+                <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                  指定 Provider 支持的端点类型。Responses 会将所有请求路由到 /v1/responses；Chat
+                  Completions 路由到 /v1/chat/completions；自动则保持客户端请求的原始路径
+                </p>
+              </div>
+
               <!-- 限流时长字段 - 隐藏不显示，使用默认值60 -->
               <input v-model.number="form.rateLimitDuration" type="hidden" value="60" />
             </div>
@@ -3440,6 +3458,24 @@
               </p>
             </div>
 
+            <div>
+              <label class="mb-3 block text-sm font-semibold text-gray-700 dark:text-gray-300"
+                >Provider 端点类型</label
+              >
+              <select
+                v-model="form.providerEndpoint"
+                class="form-input w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200"
+              >
+                <option value="responses">Responses（推荐）</option>
+                <option value="completions">Chat Completions</option>
+                <option value="auto">自动（保持原始路径）</option>
+              </select>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                指定 Provider 支持的端点类型。Responses 路由到 /v1/responses；Chat Completions
+                路由到 /v1/chat/completions；自动则保持原始路径
+              </p>
+            </div>
+
             <!-- 限流时长字段 - 隐藏不显示，保持原值 -->
             <input v-model.number="form.rateLimitDuration" type="hidden" />
 
@@ -4272,6 +4308,7 @@ const form = ref({
   endpointType: props.account?.endpointType || 'anthropic',
   // OpenAI-Responses 特定字段
   baseApi: props.account?.baseApi || '',
+  providerEndpoint: props.account?.providerEndpoint || 'responses',
   // Gemini-API 特定字段
   baseUrl: props.account?.baseUrl || 'https://generativelanguage.googleapis.com',
   rateLimitDuration: props.account?.rateLimitDuration || 60,
@@ -5434,6 +5471,7 @@ const createAccount = async () => {
       data.baseApi = form.value.baseApi
       data.apiKey = form.value.apiKey
       data.userAgent = form.value.userAgent || ''
+      data.providerEndpoint = form.value.providerEndpoint || 'responses'
       data.priority = form.value.priority || 50
       data.rateLimitDuration = 60 // 默认值60，不从用户输入获取
       data.dailyQuota = form.value.dailyQuota || 0
@@ -5784,6 +5822,7 @@ const updateAccount = async () => {
         data.apiKey = form.value.apiKey
       }
       data.userAgent = form.value.userAgent || ''
+      data.providerEndpoint = form.value.providerEndpoint || 'responses'
       data.priority = form.value.priority || 50
       // 编辑时不上传 rateLimitDuration，保持原值
       data.dailyQuota = form.value.dailyQuota || 0
@@ -6406,6 +6445,7 @@ watch(
         deploymentName: newAccount.deploymentName || '',
         // OpenAI-Responses 特定字段
         baseApi: newAccount.baseApi || '',
+        providerEndpoint: newAccount.providerEndpoint || 'responses',
         // Gemini-API 特定字段
         baseUrl: newAccount.baseUrl || 'https://generativelanguage.googleapis.com',
         // 额度管理字段