Stop GPT-4.1 Ending Turns Early in Refactors

Combine GPT-4.1's literal instruction following with the persistence reminder so it completes multi-file edits across an entire module rather than stopping after editing the first file.

Developer: Rename the deprecated userId field to accountUuid across all service, controller, and test files. Keep going until every reference across the codebase is updated and verified before ending your turn and yielding back to the user.