After a model upgrade, should you delete your prompts and patch code? A 5-step regression cleanup guide
Author’s note: After a model upgrade, you can’t just delete prompts and patch code on gut feeling. This article gives you a 4-category taxonomy and a 5-step regression process to help you decide what to delete, what to change, and what to keep. In November 2026, a 36Kr report about a key Claude Code figure…