This sounds great - would love to hear a little more about the prompts. Are you literally just asking 'write me a context.md that explains how feature x works' or something like that?
For design.md, I have a prompt because we're now working with a reasoning model and doing structured data extraction: create me an issue on Linear with a title, description, and a to-do list.
I would recommend trying the approach yourself and saving the prompts if you can nail down the repetitive asks.