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.

frontend/src/api.ts

@@ -170,6 +170,8 @@ export interface EventSummary {
   summary: string;
   actor_user?: string | null;
   rdg_flap?: boolean;
+  rdg_flap_pair_event_id?: number | null;
+  rdg_flap_qwinsta_event_id?: number | null;
 }
 
 export interface AgentCommandResponse {