Worth trying this prompt with Fable 5.2. It's from Alex on the Anthropic team:
"Read this entire project and find everything that's broken, inconsistent, inefficient, or no longer needed. Fix what you're sure about and list the rest for me to review."
Heads up though, a full-project sweep can burn through a lot of your usage limit.
Every time we have a new model, I run the same simple prompt on all my projects:
"Read this entire project and find everything that’s broken, inconsistent, inefficient, or no longer needed. Fix what you’re sure about and list the rest for me to review."
highly recommend trying