feat: attendance frontend page + backend list/classes endpoints

- Create AttendancePage with filter bar, table, calendar view toggle, batch add modal
- Register /attendance route with PermissionRoute (attendance:view)
- Add menu item in MainLayout with CheckCircleOutlined icon
- Add GET /attendance-records with pagination and filters
- Add GET /attendance-records/classes for class dropdown
- Add source column to AttendanceRecord entity (default: manual)
- Frontend tsc --noEmit: clean; backend: only pre-existing test errors

apps/server/src/attendance/dto/attendance.dto.ts

@@ -36,6 +36,10 @@ export class AttendanceRecordItem {
   @IsOptional()
   @IsString()
   remark?: string;
+
+  @IsOptional()
+  @IsString()
+  source?: string;
 }
 
 export class BatchCreateAttendanceDto {
@@ -78,6 +82,44 @@ export class QueryDingRawDto {
   matchStatus?: string;
 }
 
+export class QueryAttendanceRecordsDto {
+  @IsOptional()
+  @IsInt()
+  @Type(() => Number)
+  classId?: number;
+
+  @IsOptional()
+  @IsDateString()
+  dateFrom?: string;
+
+  @IsOptional()
+  @IsDateString()
+  dateTo?: string;
+
+  @IsOptional()
+  @IsString()
+  session?: string;
+
+  @IsOptional()
+  @IsString()
+  @IsIn(['present', 'late', 'absent', 'leave'])
+  status?: string;
+
+  @IsOptional()
+  @IsString()
+  source?: string;
+
+  @IsOptional()
+  @IsInt()
+  @Type(() => Number)
+  page?: number;
+
+  @IsOptional()
+  @IsInt()
+  @Type(() => Number)
+  pageSize?: number;
+}
+
 export class MatchDingRecordDto {
   @IsInt()
   @IsNotEmpty()