Status: OUT
The event architecture's bidirectional temporal safety — State's atomic forward transitions ensuring clean state changes plus Command's engineering triad ensuring reliable backward transitions (undo/redo) — achieves operational status only while Observer's unexpected-updates liability is mitigated, since temporal safety depends on the notification system delivering consistent state.
Bidirectional temporal safety depends on Observer delivering consistent notifications; unexpected updates can undermine the guarantee
Depends on (SL): temporal-safety-via-complementary-atomicity-and-engineering, observer-consistency-via-template-method