feat: streamline occupancy check-in and imports

apps/server/src/occupancies/dto/occupancy.dto.spec.ts

@@ -1,3 +1,4 @@
+import { ValidationPipe } from '@nestjs/common';
 import { validate } from 'class-validator';
 import { CheckInDto, TransferRoomDto } from './occupancy.dto';
 
@@ -14,6 +15,50 @@ describe('manual occupancy DTO bed requirements', () => {
     expect(errors.some((error) => error.property === 'bedId')).toBe(true);
   });
 
+  it('accepts optional deposit collection details for manual check-in', async () => {
+    const dto = Object.assign(new CheckInDto(), {
+      studentId: 1,
+      roomId: 2,
+      checkInDate: '2026-07-13',
+      bedId: 3,
+      collectDeposit: true,
+      depositAmount: 500,
+    });
+
+    await expect(validate(dto)).resolves.toHaveLength(0);
+  });
+
+  it('rejects a non-positive deposit amount', async () => {
+    const dto = Object.assign(new CheckInDto(), {
+      studentId: 1,
+      roomId: 2,
+      checkInDate: '2026-07-13',
+      bedId: 3,
+      collectDeposit: true,
+      depositAmount: 0,
+    });
+
+    const errors = await validate(dto);
+
+    expect(errors.some((error) => error.property === 'depositAmount')).toBe(true);
+  });
+
+  it('strips a manually supplied responsible organization', async () => {
+    const pipe = new ValidationPipe({ transform: true, whitelist: true });
+    const dto = await pipe.transform(
+      {
+        studentId: 1,
+        roomId: 2,
+        checkInDate: '2026-07-13',
+        bedId: 3,
+        responsibleOrganizationId: 99,
+      },
+      { type: 'body', metatype: CheckInDto },
+    );
+
+    expect(dto).not.toHaveProperty('responsibleOrganizationId');
+  });
+
   it('requires a new bed for a room transfer while keeping the locker optional', async () => {
     const dto = Object.assign(new TransferRoomDto(), {
       newRoomId: 3,