[PASS] valid ISO date
[PASS] reject impossible date
[PASS] valid 24-hour time
[PASS] reject impossible time
[PASS] normalise UK mobile
[PASS] normalise international UK mobile
[PASS] reject non-mobile phone
[PASS] preserve configured per-person duration rule
[PASS] per-lane duration remains flat
[PASS] per-person server pricing
[PASS] per-lane server pricing
[PASS] discount applied before booking fee
[PASS] Stripe pence snapshot matches total
[PASS] hold respects Stripe minimum expiry
[PASS] maximum hold lifetime is not shorter than a normal hold

All smoke checks passed.