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/tests/test_rdg_session_flap.py

@@ -14,7 +14,9 @@ from app.services.rdg_session_flap import (
     evaluate_rdg_session_flap,
     event_has_rdg_flap,
     find_rdg_success_before_end,
+    resolve_rdg_flap_summary,
 )
+from app.services.event_summary import event_to_summary
 from tests.test_ingest import VALID_EVENT
 
 
@@ -156,3 +158,49 @@ def test_rdg_flap_dedup_within_30_sec(db_session, rdg_settings):
         )
     )
     assert open_count == 1
+
+
+def test_resolve_rdg_flap_summary_for_302_and_303(db_session, rdg_settings):
+    t0 = datetime.now(timezone.utc)
+    user = "B26\\pair.user"
+    details = {"user": user, "internal_ip": "192.168.163.48"}
+
+    start = _ingest(
+        db_session,
+        t0,
+        type="rdg.connection.success",
+        category="auth",
+        severity="warning",
+        title="RD Gateway event 302",
+        summary="302",
+        details=details,
+    )
+    end = _ingest(
+        db_session,
+        t0 + timedelta(seconds=5),
+        type="rdg.connection.disconnected",
+        category="auth",
+        severity="info",
+        title="RD Gateway event 303",
+        summary="303",
+        details=details,
+    )
+    evaluate_rdg_session_flap(db_session, end)
+    db_session.flush()
+
+    end_flap, end_pair, end_qwinsta = resolve_rdg_flap_summary(db_session, end)
+    start_flap, start_pair, start_qwinsta = resolve_rdg_flap_summary(db_session, start)
+
+    assert end_flap is True
+    assert end_pair == start.id
+    assert end_qwinsta == end.id
+
+    assert start_flap is True
+    assert start_pair == end.id
+    assert start_qwinsta == end.id
+
+    end_summary = event_to_summary(end, db_session)
+    start_summary = event_to_summary(start, db_session)
+    assert end_summary.rdg_flap is True
+    assert start_summary.rdg_flap is True
+    assert start_summary.rdg_flap_qwinsta_event_id == end.id