feat: integrate notification creation into business modules (classes, schedules done; bills/occupancies/deposits need student→userId mapping)

apps/server/src/occupancies/occupancies.controller.ts

@@ -16,6 +16,8 @@ import {
 import { FileInterceptor } from '@nestjs/platform-express';
 import type { Response } from 'express';
 import { OccupanciesService } from './occupancies.service';
+import { NotificationsService } from '../notifications/notifications.service';
+import { NotificationType } from '../entities/notification.entity';
 import { CheckInDto, CheckOutDto, TransferRoomDto, BatchCheckOutDto } from './dto/occupancy.dto';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { OperationLogsService } from '../operation-logs/operation-logs.service';
@@ -29,6 +31,7 @@ export class OccupanciesController {
   constructor(
     private service: OccupanciesService,
     private logService: OperationLogsService,
+    private readonly notificationsService: NotificationsService,
   ) {}
 
   @Get()
@@ -78,6 +81,7 @@ export class OccupanciesController {
       ipAddress,
       userAgent,
     });
+    // TODO: Send notification for check_in — studentId→userId mapping unavailable
     return result;
   }
 
@@ -96,6 +100,7 @@ export class OccupanciesController {
       ipAddress,
       userAgent,
     });
+    // TODO: Send notification for check_out — studentId→userId mapping unavailable
     return result;
   }