feat: 支局长可删除用户 + 清理重复蓝浩博

- 新增 DELETE /api/users/{id} (require_director, 不能删自己)
- 用户管理页新增「删除」按钮(仅支局长可见)
- 删除重复的分管领导蓝浩博

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

backend/app/api/users.py

@@ -122,3 +122,23 @@ async def update_user_wecom(
         "name": user.name,
         "wecom_userid": user.wecom_userid,
     }
+
+
+@router.delete("/{user_id}")
+async def delete_user(
+    user_id: str,
+    current_user: dict = Depends(require_director),
+    db: AsyncSession = Depends(get_db),
+):
+    """Director deletes a user. Cannot delete self."""
+    if user_id == current_user["user_id"]:
+        raise HTTPException(status_code=400, detail="不能删除自己")
+
+    result = await db.execute(select(User).where(User.id == uuid.UUID(user_id)))
+    user = result.scalar_one_or_none()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    await db.delete(user)
+    await db.commit()
+    return {"detail": "deleted", "name": user.name}

frontend/src/views/desktop/UserManage.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
-import { ElMessage } from 'element-plus'
+import { ElMessage, ElMessageBox } from 'element-plus'
 import api from '@/api/index'
 
 const loading = ref(false)
@@ -59,6 +59,15 @@ async function handleSave() {
     await loadUsers()
   } catch (e: any) { ElMessage.error('更新失败: ' + (e.response?.data?.detail || e.message)) }
 }
+
+async function handleDelete(row: any) {
+  try {
+    await ElMessageBox.confirm(`确定删除「${row.name}」？此操作不可恢复。`, '确认删除', { type: 'warning', confirmButtonText: '删除', cancelButtonText: '取消' })
+    await api.delete(`/users/${row.id}`)
+    ElMessage.success(`已删除「${row.name}」`)
+    await loadUsers()
+  } catch (e: any) { if (e !== 'cancel') ElMessage.error('删除失败: ' + (e.response?.data?.detail || e.message)) }
+}
 </script>
 
 <template>
@@ -89,9 +98,10 @@ async function handleSave() {
             <span v-else style="color:var(--c-text-muted);font-size:12px">未绑定</span>
           </template>
         </el-table-column>
-        <el-table-column label="操作" width="80" fixed="right">
+        <el-table-column label="操作" width="130" fixed="right">
           <template #default="{ row }">
             <el-button text size="small" type="primary" @click="openEdit(row)">编辑</el-button>
+            <el-button v-if="auth.isDirector" text size="small" type="danger" @click="handleDelete(row)">删除</el-button>
           </template>
         </el-table-column>
       </el-table>