feat(mcp): show wizard button only in custom mode

- Hide 'Use Configuration Wizard' button when preset MCP is selected
- Show wizard button only in custom mode or edit mode
- Prevents user confusion by avoiding wizard access when preset configs are loaded

src/components/mcp/McpFormModal.tsx

@@ -259,7 +259,6 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
         <div className="flex-1 overflow-y-auto p-6 space-y-4">
           {/* 预设选择（仅新增时展示） */}
           {!isEditing && (
-            <div className="space-y-4">
             <div>
               <label className="block text-sm font-medium text-gray-900 dark:text-gray-100 mb-3">
                 {t("mcp.presets.title")}
@@ -293,17 +292,6 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
                 ))}
               </div>
             </div>
-              {selectedPreset === -1 && (
-                <div className="text-sm text-gray-500 dark:text-gray-400">
-                  {t("presetSelector.customDescription")}
-                </div>
-              )}
-              {selectedPreset !== null && selectedPreset >= 0 && (
-                <div className="text-sm text-gray-500 dark:text-gray-400">
-                  {t("presetSelector.presetDescription")}
-                </div>
-              )}
-            </div>
           )}
           {/* ID (标题) */}
           <div>
@@ -345,6 +333,7 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
               <label className="block text-sm font-medium text-gray-700 dark:text-gray-300">
                 {t("mcp.form.jsonConfig")}
               </label>
+              {(isEditing || selectedPreset === -1) && (
                 <button
                   type="button"
                   onClick={() => setIsWizardOpen(true)}
@@ -352,6 +341,7 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
                 >
                   {t("mcp.form.useWizard")}
                 </button>
+              )}
             </div>
             <textarea
               className={`${inputStyles.text} h-48 resize-none font-mono text-xs`}

src/i18n/locales/en.json

@@ -345,7 +345,7 @@
       "deleteMessage": "Are you sure you want to delete MCP server \"{{id}}\"? This action cannot be undone."
     },
     "presets": {
-      "title": "Presets",
+      "title": "Select MCP Type",
       "enable": "Enable",
       "enabled": "Enabled",
       "installed": "Installed",

src/i18n/locales/zh.json

@@ -345,7 +345,7 @@
       "deleteMessage": "确定要删除 MCP 服务器 \"{{id}}\" 吗？此操作无法撤销。"
     },
     "presets": {
-      "title": "预设库",
+      "title": "选择 MCP 类型",
       "enable": "启用",
       "enabled": "已启用",
       "installed": "已安装",