feat: improve bgp incident visibility

backend/tests/test_bgp.py

@@ -563,3 +563,83 @@ async def test_bgp_incidents_api_returns_incident():
     assert list_response.json()["total"] == 1
     assert detail_response.status_code == 200
     assert detail_response.json()["incident_type"] == "origin_change"
+
+
+@pytest.mark.asyncio
+async def test_bgp_incident_summary_api_returns_aggregates():
+    class _SummaryResult:
+        def __init__(self, scalar_value=None, rows=None):
+            self._scalar_value = scalar_value
+            self._rows = rows or []
+
+        def scalar(self):
+            return self._scalar_value
+
+        def fetchall(self):
+            return self._rows
+
+    class _SummarySession:
+        def __init__(self):
+            self.calls = 0
+
+        async def execute(self, _stmt):
+            self.calls += 1
+            if self.calls == 1:
+                return _SummaryResult(scalar_value=2)
+            if self.calls == 2:
+                return _SummaryResult(rows=[("origin_change", 2)])
+            if self.calls == 3:
+                return _SummaryResult(rows=[("critical", 1), ("high", 1)])
+            return _SummaryResult(rows=[("active", 2)])
+
+    db = _SummarySession()
+    client = await _bgp_test_client(db)
+
+    try:
+        response = await client.get("/api/v1/bgp/incidents/summary")
+    finally:
+        await client.aclose()
+        app.dependency_overrides.clear()
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["total"] == 2
+    assert payload["by_type"]["origin_change"] == 2
+    assert payload["by_severity"]["critical"] == 1
+    assert payload["by_status"]["active"] == 2
+
+
+@pytest.mark.asyncio
+async def test_bgp_event_summary_api_returns_aggregates():
+    observation_one = BGPObservation(
+        id=1,
+        source="ris_live_bgp",
+        collector="rrc00",
+        prefix="203.0.113.0/24",
+        event_type="announcement",
+        observed_at=datetime(2026, 3, 30, 10, 0, tzinfo=UTC),
+    )
+    observation_two = BGPObservation(
+        id=2,
+        source="ris_live_bgp",
+        collector="rrc01",
+        prefix="198.51.100.0/24",
+        event_type="withdrawal",
+        observed_at=datetime(2026, 3, 30, 10, 5, tzinfo=UTC),
+    )
+    db = _FakeAsyncSession([[observation_one, observation_two]])
+    client = await _bgp_test_client(db)
+
+    try:
+        response = await client.get("/api/v1/bgp/events/summary")
+    finally:
+        await client.aclose()
+        app.dependency_overrides.clear()
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["total"] == 2
+    assert payload["collector_count"] == 2
+    assert payload["prefix_count"] == 2
+    assert payload["by_type"]["announcement"] == 1
+    assert payload["by_type"]["withdrawal"] == 1