Fixed Leave rejection and approvals

lib/screens/workforce/workforce_screen.dart

@@ -513,7 +513,7 @@ class _ScheduleTile extends ConsumerWidget {
 
     if (confirmed != true || !context.mounted) return;
 
-    final startDateTime = DateTime(
+    var startDateTime = DateTime(
       selectedDate.year,
       selectedDate.month,
       selectedDate.day,
@@ -531,6 +531,12 @@ class _ScheduleTile extends ConsumerWidget {
       endDateTime = endDateTime.add(const Duration(days: 1));
     }
 
+    // ensure times are expressed in the app timezone (Asia/Manila) before
+    // sending to the backend. previously these were raw local DateTimes which
+    // caused off-by-offset errors when the device timezone differed.
+    startDateTime = AppTime.toAppTime(startDateTime);
+    endDateTime = AppTime.toAppTime(endDateTime);
+
     try {
       await ref
           .read(workforceControllerProvider)