refactor(activity): format due date change summaries as date-only

Author: Diogo-Ferraz

src/app/features/dashboard/presenters/dashboard-activity.presenter.spec.ts

@@ -53,4 +53,22 @@ describe('dashboard-activity.presenter', () => {
     expect(event.iconColor).toBe('text-red-500');
     expect(event.bgColor).toBe('bg-red-100');
   });
+
+  it('formats due date change values into readable date strings', () => {
+    const event = mapActivityToRecentActivity({
+      id: '4',
+      type: ActivityType.TaskDueDateChanged,
+      taskTitle: 'Prepare release notes',
+      actorUserId: 'user-1',
+      actorDisplayName: 'Demo Admin',
+      oldValue: '2026-02-24T23:00:00.0000000',
+      newValue: '2026-02-24T22:00:00.0000000Z',
+      occurredAt: '2026-02-20T09:00:00.000Z'
+    });
+
+    expect(event.summary).not.toContain('T23:00:00.0000000');
+    expect(event.summary).not.toContain('T22:00:00.0000000Z');
+    expect(event.summary).toContain('changed due date from');
+    expect(event.summary).toContain('to');
+  });
 });

src/app/features/dashboard/presenters/dashboard-activity.presenter.ts

@@ -48,7 +48,7 @@ function createActivitySummary(activity: ActivityLogDto): string {
     case ActivityType.TaskAssigneeChanged:
       return `<strong>${actor}</strong> reassigned task from <i>${escapeText(activity.oldValue ?? 'Unassigned')}</i> to <i>${escapeText(activity.newValue ?? 'Unassigned')}</i>`;
     case ActivityType.TaskDueDateChanged:
-      return `<strong>${actor}</strong> changed due date from <i>${escapeText(activity.oldValue ?? 'None')}</i> to <i>${escapeText(activity.newValue ?? 'None')}</i>`;
+      return `<strong>${actor}</strong> changed due date from <i>${escapeText(formatActivityDateValue(activity.oldValue))}</i> to <i>${escapeText(formatActivityDateValue(activity.newValue))}</i>`;
     default:
       return `<strong>${actor}</strong> performed an update`;
   }
@@ -145,6 +145,24 @@ function formatTaskStatus(status?: TaskStatus | null): string {
   }
 }
 
+function formatActivityDateValue(value?: string | null): string {
+  if (!value || value.trim().length === 0) {
+    return 'None';
+  }
+
+  const trimmed = value.trim();
+  const parsedDate = new Date(trimmed);
+  if (Number.isNaN(parsedDate.getTime())) {
+    return trimmed;
+  }
+
+  return new Intl.DateTimeFormat(undefined, {
+    month: 'short',
+    day: 'numeric',
+    year: 'numeric'
+  }).format(parsedDate);
+}
+
 function escapeText(value: string): string {
   return value
     .replace(/&/g, '&amp;')