fix: code-review 审查问题修复 + A2UI 测试补齐

Standards 轴:
- 移除 uiArtifacts.ts 的 payloadOf 死代码残留
- AttendanceDevices 残留 any 类型化(补 ClassroomOption.status 字段)
- 批量考勤纠错区分业务失败(已结算/无权限)与系统错误,
  前端提示精确到两类数量
- Dashboard queryFn 六段重复校验块收敛为 safeValidate 助手

Spec 轴:
- 补齐阶段 3.4 A2UI 测试:图表空数据占位、ArtifactErrorBoundary
  降级隔离、useSubmissionState/useXCardSurface 单测(7 用例)
- 阶段 2.2 补两处引导:教师工作台区分「今日无课」与「未分配班级」、
  班级花名册空态带「添加学员」动作
- 契约文档修正 DynamicReview 状态管理描述(多提交点如实说明)

aislop 剩余 16 警告均为必要豁免(类型边界/声明式 SQL 配置/既有文件规模)

apps/server/src/attendance/attendance-records.controller.ts

@@ -1,4 +1,4 @@
-import { Controller, Get, Post, Put, Delete, Body, Param, Query, Request, Res, BadRequestException, ForbiddenException, ParseIntPipe } from '@nestjs/common';
+import { Controller, Get, Post, Put, Delete, Body, Param, Query, Request, Res, BadRequestException, ForbiddenException, NotFoundException, ParseIntPipe } from '@nestjs/common';
 import type { Response } from 'express';
 import { AttendanceControllerBase, RequestUser } from './attendance.controller-base';
 import { AttendanceService } from './attendance.service';
@@ -246,6 +246,7 @@ export class AttendanceRecordsController extends AttendanceControllerBase {
   ) {
     const failedIds: number[] = [];
     let updated = 0;
+    let systemFailed = 0;
     for (const id of dto.ids) {
       try {
         const existing = await this.service.findAttendanceRecord(id);
@@ -255,15 +256,24 @@ export class AttendanceRecordsController extends AttendanceControllerBase {
         if (existing.classId != null) await this.assertClassAccess(req, existing.classId);
         await this.service.update(id, { status: dto.status, remark: dto.remark });
         updated += 1;
-      } catch {
+      } catch (error) {
         failedIds.push(id);
+        // 业务失败（已结算/无权限等）与系统错误区分开，便于前端给出准确提示
+        if (
+          error instanceof BadRequestException ||
+          error instanceof NotFoundException ||
+          error instanceof ForbiddenException
+        ) {
+          continue;
+        }
+        systemFailed += 1;
       }
     }
     await logAudit(this.logService, req, {
       module: '考勤管理', action: '批量修改考勤状态', targetId: 0, targetType: 'attendanceRecord',
-      detail: `批量 ${dto.ids.length} 条 → ${dto.status}，成功 ${updated}，失败 ${failedIds.length}`,
+      detail: `批量 ${dto.ids.length} 条 → ${dto.status}，成功 ${updated}，失败 ${failedIds.length}，系统错误 ${systemFailed}`,
     });
-    return { updated, failed: failedIds.length, failedIds };
+    return { updated, failed: failedIds.length, failedIds, systemFailed };
   }
 
   // ── Update a single attendance record ──