fix: normalize null activity feed payloads (#93)

src/gitea_proxy.py

@@ -47,6 +47,6 @@ async def activity_events() -> list[dict]:
             "repo": event.get("repo") or {},
             "created_at": event.get("created", ""),
         }
-        for event in events
+        for event in (events or [])
         if isinstance(event, dict)
     ]

tests/test_event_stream.py

@@ -148,3 +148,17 @@ async def test_activity_events_skips_malformed_feed_entries(monkeypatch):
         "repo": {"full_name": "stackchain/stackchain-dashboard"},
         "created_at": "2026-08-06T08:00:00Z",
     }]
+
+
+@pytest.mark.anyio
+async def test_activity_events_normalizes_null_feed_payload(monkeypatch):
+    async def fake_current_user():
+        return {"login": "timmy"}
+
+    async def fake_fetch(path):
+        return None
+
+    monkeypatch.setattr(gitea_proxy, "current_user", fake_current_user)
+    monkeypatch.setattr(gitea_proxy, "fetch", fake_fetch)
+
+    assert await gitea_proxy.activity_events() == []