fix: show RDG flap badge on 302 and 303 events in SAC UI (0.20.5)

Seaca surfaced flap via Problems; the web UI only flagged 303 in DB and had
no visible label. Resolve flap pairs at read time and show badge plus qwinsta
on both sides of 302→303.

backend/app/api/v1/dashboards.py

@@ -25,7 +25,7 @@ def fetch_recent_events(db: Session, *, limit: int = 8) -> list[EventSummary]:
         .order_by(Event.received_at.desc())
         .limit(limit)
     ).all()
-    return [event_to_summary(e) for e in rows]
+    return [event_to_summary(e, db) for e in rows]
 
 
 class TopHostItem(BaseModel):

backend/app/api/v1/events.py

@@ -170,7 +170,7 @@ def list_events(
         .limit(page_size)
     ).all()
 
-    items = [event_to_summary(e) for e in rows]
+    items = [event_to_summary(e, db) for e in rows]
     return EventListResponse(items=items, total=total, page=page, page_size=page_size)
 
 
@@ -266,7 +266,7 @@ def get_event(
     )
     if event is None:
         raise HTTPException(status_code=404, detail="Event not found")
-    base = event_to_summary(event)
+    base = event_to_summary(event, db)
     return EventDetail(
         **base.model_dump(),
         details=event.details,