功能：平台管理员删除商户账号

frontend/src/api/index.ts

@@ -181,6 +181,8 @@ export const deliveryApi = {
 export const platformApi = {
   merchantAccounts: (params?: Record<string, unknown>) =>
     request.get('/platform/merchant-accounts', { params }).then((r) => r.data.data as PageResult<MerchantMemberGroup>),
+  deleteMerchantAccount: (userId: number) =>
+    request.delete(`/platform/merchant-accounts/${userId}`).then((r) => r.data.data),
   merchants: (params?: Record<string, unknown>) =>
     request.get('/platform/merchants', { params }).then((r) => r.data.data as PageResult<Merchant>),
   createMerchant: (data: {

frontend/src/pages/PlatformUsers.tsx

@@ -104,6 +104,16 @@ export default function PlatformUsers() {
     }
   }
 
+  const removeMerchantAccount = async (record: MerchantMember) => {
+    try {
+      await platformApi.deleteMerchantAccount(record.user_id)
+      message.success('商户账号已删除')
+      void loadMerchantAccounts()
+    } catch (e) {
+      message.error(e instanceof Error ? e.message : '删除失败')
+    }
+  }
+
   const columns: ColumnsType<User> = [
     { title: '用户名', dataIndex: 'username', width: 260, render: (value) => <Typography.Text strong>{value}</Typography.Text> },
     { title: '昵称', dataIndex: 'nickname', width: 220, render: (value) => value || '-' },
@@ -128,6 +138,18 @@ export default function PlatformUsers() {
     { title: '昵称', dataIndex: ['user', 'nickname'], width: 220, render: (_, record) => record.user?.nickname || '-' },
     { title: '商户角色', dataIndex: 'role', width: 160, render: (role) => <Tag color="blue">{roleText(role)}</Tag> },
     { title: '成员状态', dataIndex: 'status', width: 130, render: (status) => status === 1 ? <Tag color="green">启用</Tag> : <Tag>停用</Tag> },
+    {
+      title: '操作',
+      width: 120,
+      render: (_, record) => <Popconfirm
+        title={`确认删除商户账号「${record.user?.username || `#${record.user_id}`}」？`}
+        description="该账号会被永久删除，并移除其在所有商户下的成员关系。"
+        onConfirm={() => void removeMerchantAccount(record)}
+        okButtonProps={{ danger: true }}
+      >
+        <Button type="link" danger size="small" icon={<DeleteOutlined />}>删除账号</Button>
+      </Popconfirm>,
+    },
   ]
 
   const merchantColumns: ColumnsType<MerchantMemberGroup> = [