初始化提交

backend/app/modules/runtime/__init__.py

@@ -0,0 +1,6 @@
+"""运行时：Run / Event / Trace 与小周天执行状态（见后端架构计划 5.2）。"""
+
+from app.modules.runtime.events import Event, EventStore, InMemoryEventStore
+from app.modules.runtime.goals import build_goals_context
+
+__all__ = ["Event", "EventStore", "InMemoryEventStore", "build_goals_context"]