feat: enforce hierarchical back navigation and home-only exit

apps/lib/features/calendar/ui/screens/calendar_dayweek_screen.dart

@@ -119,7 +119,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
         canPop: false,
         onPopInvokedWithResult: (didPop, result) {
           if (!didPop) {
-            returnToHomePreserveState(context);
+            returnToHomePreserveState(context, forceGoHome: true);
           }
         },
         child: SafeArea(
@@ -702,7 +702,7 @@ class _CalendarDayWeekScreenState extends State<CalendarDayWeekScreen>
         _calendarManager.setViewType(CalendarViewType.day);
         context.push(AppRoutes.calendarMonth);
       },
-      onHomeTap: () => returnToHomePreserveState(context),
+      onHomeTap: () => returnToHomePreserveState(context, forceGoHome: true),
     );
   }
 }

apps/lib/features/calendar/ui/screens/calendar_month_screen.dart

@@ -105,7 +105,7 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
         canPop: false,
         onPopInvokedWithResult: (didPop, result) {
           if (!didPop) {
-            returnToHomePreserveState(context);
+            returnToHomePreserveState(context, forceGoHome: true);
           }
         },
         child: SafeArea(
@@ -522,7 +522,7 @@ class _CalendarMonthScreenState extends State<CalendarMonthScreen>
         context.push(AppRoutes.todoList);
       },
       onCalendarTap: () {},
-      onHomeTap: () => returnToHomePreserveState(context),
+      onHomeTap: () => returnToHomePreserveState(context, forceGoHome: true),
     );
   }
 }