Fix notification activation and calendar bootstrap flow

Wino.Messages/Client/Calendar/LoadCalendarMessage.cs

@@ -1,3 +1,4 @@
+#nullable enable
 using Wino.Core.Domain.Models.Calendar;
 
 namespace Wino.Messaging.Client.Calendar;
@@ -7,4 +8,8 @@ namespace Wino.Messaging.Client.Calendar;
 /// </summary>
 /// <param name="DisplayRequest">Display type and anchor date to resolve.</param>
 /// <param name="ForceReload">Force a reload even if the resolved range did not change.</param>
-public record LoadCalendarMessage(CalendarDisplayRequest DisplayRequest, bool ForceReload = false);
+/// <param name="PendingTarget">Optional event target to open after the requested range is loaded.</param>
+public record LoadCalendarMessage(
+    CalendarDisplayRequest DisplayRequest,
+    bool ForceReload = false,
+    CalendarItemTarget? PendingTarget = null);