Extend tournament broadcast search window to 72 hours

tournaments/views.py

@@ -535,8 +535,8 @@ def automatic_broadcast_event(request, event_id):
     now = timezone.now()
 
     # Get all tournaments for the event (expanded time range for better coverage)
-    past_cutoff = now - timedelta(hours=12)  # Extended past search
-    future_cutoff = now + timedelta(hours=12)  # Extended future search
+    past_cutoff = now - timedelta(hours=72)  # Extended past search
+    future_cutoff = now + timedelta(hours=72)  # Extended future search
 
     all_tournaments = Tournament.objects.filter(
         event=event,