Pet Care — stress-test site

Covers: Daycare with a temperament-gate chain (vaccination, then behavioural assessment, then eligibility rules) and a rabies vaccination that expires mid-way through a 12-week recurring schedule.

Covers: Boarding resort with a holiday deposit switch (50% or $50-150 non-refundable) and a 3-night Thanksgiving minimum-stay rule.

Covers: Boarding-plus-exit-groom composite booking: two resources (kennel and groomer) under one custody episode, never modeled as a new service flag.

Covers: Groomer with breed/coat-matrix pricing, matting-severity-based humane-shave authorization, and a mobile van route to the client's home.

Covers: Walker with a recurring Monday/Wednesday/Friday schedule, arrival windows instead of fixed times, key custody for home entry, and a no-access path when entry fails.

Covers: Overnight in-home sitter requiring a meet-and-greet, just-in-time home-access disclosure, and a maximum-absence limit per visit.

Covers: Trainer offering a cohort class with spaces-left tracking, a board-and-train program with a deposit, and a bite-history intake.

Covers: Multi-pet household where each pet independently diverges on eligibility — one pet's vaccination or evaluation status differs from its sibling's within the same household.

Covers: 10-day-pass entitlement ledger with a last-credit race condition and a pack that can expire in the gap between booking a visit and actually attending it.

Covers: Cat-only facility whose species policy must fail closed on an unsupported species — for example, a booking attempt for a snake.