v5.4.2 — Service Manual

Another one for the crew. The garage's service manual — every procedure, checklist, and reference binder on the shelf — got a full front-to-back review and re-write where the pages had fallen behind the work: nearly two hundred corrections, each one checked twice before the ink dried. The shop's own tools got two upgrades out of it: the morning opening routine now runs itself on the shop computer (and warns loudly if a part on the bench doesn't match the parts list), and the binder index now refuses to describe a chapter as current when its cover says archived. Nothing changes on your side of the counter — but the crew works faster when the manual tells the truth.