Adopting Spec Kit in legacy projects: Reverse engineering specs for Docs & Auto-testing?

[yuwei1204]

Hi everyone,

I am planning to introduce Spec Kit into an existing project.
My current idea is to establish a structure where each Component or Page has its own corresponding file.spec.md

Before I start, I wanted to open a discussion on the following points:

1. Reverse Engineering for Documentation & Testing:
I am considering using an LLM to read the existing source code of a page to generate the initial .
My goal is to use this generated spec not only for onboarding new team members but also as a basis for the LLM to implement automated tests.
Do you think this workflow (Code spec.md > Spec > Auto-tests) is viable and adds value?

2. Migration Workflows:
Could anyone share their experience with introducing Spec Kit into an ongoing project?
I would love to hear how you planned the migration or any best practices you recommend.

Any suggestions or feedback would be greatly appreciated!