first commit

backend/app/repositories/native/system_events.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+from app.domain.observability import SystemEvent
+
+
+class SystemEventRepository:
+    """Temporary event repository for runtime/system telemetry."""
+
+    _events: list[SystemEvent] = []
+
+    async def add(self, event: SystemEvent) -> SystemEvent:
+        self._events.append(event)
+        return event
+
+    async def list_recent(self, limit: int = 100) -> Sequence[SystemEvent]:
+        return self._events[-limit:]
+