"Case","Expected behavior","Record to inspect","Observed"
"Two callers same slot","Only one confirms","Booking store","Not tested"
"Same request replayed","Original result; no new event","Request ID and event","Not tested"
"Staff writes overlapping event","Shared policy detects conflict","All writer paths","Not tested"
"Timeout after write","Reconcile before retry","Event/request identity","Not tested"
"Expired hold","Recheck availability","Reservation state","Not tested"
"Ambiguous date","Ask clarification","Transcript and event","Not tested"
"Failed reschedule","Original retained or honest recovery","Both event states","Not tested"
"Cancelled slot reuse","Only after confirmed cancellation","Calendar record","Not tested"