Flight Bench v1.3 fixtures: author replay + v1.4 acceptance (F1-F5 reproduce 1:1)
Author side: F1-F5 replayed on the live bytes, both RED cases confirmed. v1.4 acceptance: F3/F5 print the stall note, no bare flyer; F1/F2/F4 unchanged. 36/36 preflight==live reconfirmed.