The user has created a guide for migrating from Clerk to Supabase Auth and is developing a CLI tool called 'switchkit' to automate this process. They have shared a waitlist link for those interested in the tool.
I'm also building the switchkit CLI to automate this entire migration:
npx switchkit/cli migrate --from clerk --to supabase
Waitlist if interested: https://tally.so/r/LZP49j