Scaffold Engine application interfaces

Data/Engine/interfaces/ws/agents/events.py

@@ -0,0 +1,20 @@
+"""Agent WebSocket event placeholders for the Engine."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def register(socketio: Any) -> None:
+    """Register agent-related namespaces on *socketio*.
+
+    The concrete event handlers will be migrated in later phases.
+    """
+
+    if socketio is None:  # pragma: no cover - guard
+        return
+    # Placeholder for namespace registration, e.g. ``socketio.on_namespace(...)``.
+    return
+
+
+__all__ = ["register"]