feat: derive event lifecycle status from dates and flags

Replace persisted event statuses with publication and cancellation flags, and compute public lifecycle labels from event timing and registration capacity. Keep filters, registration checks, and profile responses aligned with the derived status.

apps/users/api/schemas.py

@@ -315,6 +315,15 @@ class PublicProfileEventSchema(Schema):
     title: str
     slug: str
     start_time: datetime
+    end_time: datetime
+    registration_start_date: Optional[datetime] = None
+    registration_end_date: Optional[datetime] = None
+    effective_registration_end_date: datetime
+    capacity: Optional[int] = None
+    registration_count: int = 0
+    status: str
+    status_label: str
+    is_cancelled: bool = False
     image_url: Optional[str] = None
     participation: Literal["confirmed", "attended"]
 

apps/users/api/views.py

@@ -400,7 +400,7 @@ def get_public_profile(request, username: str):
         Registration.objects.filter(
             user=user,
             event__is_deleted=False,
-            event__status__in=[Event.StatusChoices.PUBLISHED, Event.StatusChoices.COMPLETED],
+            event__is_published=True,
             status__in=[Registration.StatusChoices.CONFIRMED, Registration.StatusChoices.ATTENDED],
         )
         .select_related("event")
@@ -412,6 +412,15 @@ def get_public_profile(request, username: str):
             "title": event.title,
             "slug": event.slug,
             "start_time": event.start_time,
+            "end_time": event.end_time,
+            "registration_start_date": event.registration_start_date,
+            "registration_end_date": event.registration_end_date,
+            "effective_registration_end_date": event.effective_registration_end_date,
+            "capacity": event.capacity,
+            "registration_count": event.current_attendees_count,
+            "status": event.status,
+            "status_label": event.status_label,
+            "is_cancelled": event.is_cancelled,
             "image_url": request.build_absolute_uri(event.featured_image.url) if event.featured_image else None,
             "participation": registration.status,
         })