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/services/event_summary.py

@@ -1,11 +1,21 @@
+from sqlalchemy.orm import Session
+
 from app.models.event import Event
 from app.schemas.list_models import EventSummary
 from app.services.event_actor_user import extract_event_actor_user
-from app.services.rdg_session_flap import event_has_rdg_flap
+from app.services.rdg_session_flap import resolve_rdg_flap_summary
 
 
-def event_to_summary(event: Event) -> EventSummary:
+def event_to_summary(event: Event, db: Session | None = None) -> EventSummary:
     host = event.host
+    rdg_flap = False
+    rdg_flap_pair_event_id: int | None = None
+    rdg_flap_qwinsta_event_id: int | None = None
+    if db is not None:
+        rdg_flap, rdg_flap_pair_event_id, rdg_flap_qwinsta_event_id = resolve_rdg_flap_summary(
+            db, event
+        )
+
     return EventSummary(
         id=event.id,
         event_id=event.event_id,
@@ -21,5 +31,7 @@ def event_to_summary(event: Event) -> EventSummary:
         title=event.title,
         summary=event.summary,
         actor_user=extract_event_actor_user(event.type, event.details),
-        rdg_flap=event_has_rdg_flap(event),
+        rdg_flap=rdg_flap,
+        rdg_flap_pair_event_id=rdg_flap_pair_event_id,
+        rdg_flap_qwinsta_event_id=rdg_flap_qwinsta_event_id,
     )