fix: release beds/lockers in batchCheckOut

The batchCheckOut method was not releasing assigned beds and lockers
after checkout, leaving them orphaned as 'occupied'. Added the same
release pattern used in checkOut() — using runner.manager.update()
since batchCheckOut operates inside a QueryRunner transaction.

apps/server/src/sync/sync.controller.ts

@@ -93,6 +93,7 @@ export class SyncController {
     return { success: true, data: status };
   }
 
+
   private parseRootDeptId(rootDeptId: string): number {
     const parsed = parseInt(rootDeptId, 10);
     if (isNaN(parsed)) {