Fixed Leave rejection and approvals

lib/providers/leave_provider.dart

@@ -8,6 +8,12 @@ import 'stream_recovery.dart';
 import 'realtime_controller.dart';
 
 /// All visible leaves (own for standard, all for admin/dispatcher/it_staff).
+///
+/// Consumers should **not** treat every record as an active absence; the UI
+/// layers (dashboard, logbook) explicitly filter to `status == 'approved'` and
+/// verify the leave overlaps the current time.  This prevents rejected or
+/// pending applications from inadvertently influencing schedules or status
+/// computations.
 final leavesProvider = StreamProvider<List<LeaveOfAbsence>>((ref) {
   final client = ref.watch(supabaseClientProvider);
   final profileAsync = ref.watch(currentProfileProvider);