feat(group): 添加 MCP XML 注入开关

- Group 新增 mcp_xml_inject 字段，控制 Antigravity 平台的 MCP XML 协议注入
- 默认启用，可在分组设置中关闭
- 修复 GetByKeyForAuth 遗漏查询 mcp_xml_inject 字段导致认证缓存值始终为 false 的问题

frontend/src/i18n/locales/en.ts

@@ -943,6 +943,12 @@ export default {
         noRulesHint: 'Add routing rules to route specific model requests to designated accounts',
         searchAccountPlaceholder: 'Search accounts...',
         accountsHint: 'Select accounts to prioritize for this model pattern'
+      },
+      mcpXml: {
+        title: 'MCP XML Protocol Injection',
+        tooltip: 'When enabled, if the request contains MCP tools, an XML format call protocol prompt will be injected into the system prompt. Disable this to avoid interference with certain clients.',
+        enabled: 'Enabled',
+        disabled: 'Disabled'
       }
     },
 

frontend/src/i18n/locales/zh.ts

@@ -1019,6 +1019,12 @@ export default {
         noRulesHint: '添加路由规则以将特定模型请求优先路由到指定账号',
         searchAccountPlaceholder: '搜索账号...',
         accountsHint: '选择此模型模式优先使用的账号'
+      },
+      mcpXml: {
+        title: 'MCP XML 协议注入',
+        tooltip: '启用后，当请求包含 MCP 工具时，会在 system prompt 中注入 XML 格式调用协议提示词。关闭此选项可避免对某些客户端造成干扰。',
+        enabled: '已启用',
+        disabled: '已禁用'
       }
     },
 

frontend/src/types/index.ts

@@ -273,6 +273,8 @@ export interface Group {
   // 模型路由配置（仅 anthropic 平台使用）
   model_routing: Record<string, number[]> | null
   model_routing_enabled: boolean
+  // MCP XML 协议注入（仅 antigravity 平台使用）
+  mcp_xml_inject: boolean
   account_count?: number
   created_at: string
   updated_at: string

frontend/src/views/admin/GroupsView.vue

@@ -404,6 +404,51 @@
           </div>
         </div>
 
+        <!-- MCP XML 协议注入（仅 antigravity 平台） -->
+        <div v-if="createForm.platform === 'antigravity'" class="border-t pt-4">
+          <div class="mb-1.5 flex items-center gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+              {{ t('admin.groups.mcpXml.title') }}
+            </label>
+            <div class="group relative inline-flex">
+              <Icon
+                name="questionCircle"
+                size="sm"
+                :stroke-width="2"
+                class="cursor-help text-gray-400 transition-colors hover:text-primary-500 dark:text-gray-500 dark:hover:text-primary-400"
+              />
+              <div class="pointer-events-none absolute bottom-full left-0 z-50 mb-2 w-72 opacity-0 transition-all duration-200 group-hover:pointer-events-auto group-hover:opacity-100">
+                <div class="rounded-lg bg-gray-900 p-3 text-white shadow-lg dark:bg-gray-800">
+                  <p class="text-xs leading-relaxed text-gray-300">
+                    {{ t('admin.groups.mcpXml.tooltip') }}
+                  </p>
+                  <div class="absolute -bottom-1.5 left-3 h-3 w-3 rotate-45 bg-gray-900 dark:bg-gray-800"></div>
+                </div>
+              </div>
+            </div>
+          </div>
+          <div class="flex items-center gap-3">
+            <button
+              type="button"
+              @click="createForm.mcp_xml_inject = !createForm.mcp_xml_inject"
+              :class="[
+                'relative inline-flex h-6 w-11 items-center rounded-full transition-colors',
+                createForm.mcp_xml_inject ? 'bg-primary-500' : 'bg-gray-300 dark:bg-dark-600'
+              ]"
+            >
+              <span
+                :class="[
+                  'inline-block h-4 w-4 transform rounded-full bg-white shadow transition-transform',
+                  createForm.mcp_xml_inject ? 'translate-x-6' : 'translate-x-1'
+                ]"
+              />
+            </button>
+            <span class="text-sm text-gray-500 dark:text-gray-400">
+              {{ createForm.mcp_xml_inject ? t('admin.groups.mcpXml.enabled') : t('admin.groups.mcpXml.disabled') }}
+            </span>
+          </div>
+        </div>
+
         <!-- Claude Code 客户端限制（仅 anthropic 平台） -->
         <div v-if="createForm.platform === 'anthropic'" class="border-t pt-4">
           <div class="mb-1.5 flex items-center gap-1">
@@ -862,6 +907,51 @@
           </div>
         </div>
 
+        <!-- MCP XML 协议注入（仅 antigravity 平台） -->
+        <div v-if="editForm.platform === 'antigravity'" class="border-t pt-4">
+          <div class="mb-1.5 flex items-center gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+              {{ t('admin.groups.mcpXml.title') }}
+            </label>
+            <div class="group relative inline-flex">
+              <Icon
+                name="questionCircle"
+                size="sm"
+                :stroke-width="2"
+                class="cursor-help text-gray-400 transition-colors hover:text-primary-500 dark:text-gray-500 dark:hover:text-primary-400"
+              />
+              <div class="pointer-events-none absolute bottom-full left-0 z-50 mb-2 w-72 opacity-0 transition-all duration-200 group-hover:pointer-events-auto group-hover:opacity-100">
+                <div class="rounded-lg bg-gray-900 p-3 text-white shadow-lg dark:bg-gray-800">
+                  <p class="text-xs leading-relaxed text-gray-300">
+                    {{ t('admin.groups.mcpXml.tooltip') }}
+                  </p>
+                  <div class="absolute -bottom-1.5 left-3 h-3 w-3 rotate-45 bg-gray-900 dark:bg-gray-800"></div>
+                </div>
+              </div>
+            </div>
+          </div>
+          <div class="flex items-center gap-3">
+            <button
+              type="button"
+              @click="editForm.mcp_xml_inject = !editForm.mcp_xml_inject"
+              :class="[
+                'relative inline-flex h-6 w-11 items-center rounded-full transition-colors',
+                editForm.mcp_xml_inject ? 'bg-primary-500' : 'bg-gray-300 dark:bg-dark-600'
+              ]"
+            >
+              <span
+                :class="[
+                  'inline-block h-4 w-4 transform rounded-full bg-white shadow transition-transform',
+                  editForm.mcp_xml_inject ? 'translate-x-6' : 'translate-x-1'
+                ]"
+              />
+            </button>
+            <span class="text-sm text-gray-500 dark:text-gray-400">
+              {{ editForm.mcp_xml_inject ? t('admin.groups.mcpXml.enabled') : t('admin.groups.mcpXml.disabled') }}
+            </span>
+          </div>
+        </div>
+
         <!-- Claude Code 客户端限制（仅 anthropic 平台） -->
         <div v-if="editForm.platform === 'anthropic'" class="border-t pt-4">
           <div class="mb-1.5 flex items-center gap-1">
@@ -1311,7 +1401,8 @@ const createForm = reactive({
   fallback_group_id: null as number | null,
   fallback_group_id_on_invalid_request: null as number | null,
   // 模型路由开关
-  model_routing_enabled: false
+  model_routing_enabled: false,
+  mcp_xml_inject: true
 })
 
 // 简单账号类型（用于模型路由选择）
@@ -1483,7 +1574,8 @@ const editForm = reactive({
   fallback_group_id: null as number | null,
   fallback_group_id_on_invalid_request: null as number | null,
   // 模型路由开关
-  model_routing_enabled: false
+  model_routing_enabled: false,
+  mcp_xml_inject: true
 })
 
 // 根据分组类型返回不同的删除确认消息
@@ -1566,6 +1658,7 @@ const closeCreateModal = () => {
   createForm.claude_code_only = false
   createForm.fallback_group_id = null
   createForm.fallback_group_id_on_invalid_request = null
+  createForm.mcp_xml_inject = true
   createModelRoutingRules.value = []
 }
 
@@ -1617,6 +1710,7 @@ const handleEdit = async (group: Group) => {
   editForm.fallback_group_id = group.fallback_group_id
   editForm.fallback_group_id_on_invalid_request = group.fallback_group_id_on_invalid_request
   editForm.model_routing_enabled = group.model_routing_enabled || false
+  editForm.mcp_xml_inject = group.mcp_xml_inject ?? true
   // 加载模型路由规则（异步加载账号名称）
   editModelRoutingRules.value = await convertApiFormatToRoutingRules(group.model_routing)
   showEditModal.value = true