fix(server): correct archive filters and deposit access

Parse archived class query flags without Boolean string coercion, register the refund approval permission, and grant dorm managers the deposit permission group.

apps/server/src/classes/dto/class.dto.ts

@@ -1,5 +1,5 @@
 import { IsOptional, IsString, IsNotEmpty, IsInt, IsArray, IsDateString, IsEnum, ArrayNotEmpty, ValidateNested } from 'class-validator';
-import { Type } from 'class-transformer';
+import { Type, Transform } from 'class-transformer';
 import { ClassType, ClassStatus, TeacherRoleType } from '../../entities';
 
 export class CreateClassDto {
@@ -98,7 +98,12 @@ export class QueryClassDto {
   keyword?: string;
 
   @IsOptional()
-  @Type(() => Boolean)
+  @Transform(({ value }) => {
+    if (typeof value === 'boolean') return value;
+    if (value === 'true' || value === '1') return true;
+    if (value === 'false' || value === '0') return false;
+    return value;
+  })
   isArchived?: boolean;
 }