Your prompts might be worth more than your code. Opus 4.6 and 5.3 Codex are massively better at coding than models from a few months ago. If you have the prompts you used to build an app last week, you could feed that same prompt into Opus 4.6 / GPT 5.3 Codex and get a better output today. Fast forward 5-6 generations of models. Same prompts, better output. Perhaps we should be version-controlling prompts alongside code. P.S - it's actually pretty easy -- can just add a hook to Claude Code(Shiv)