This is really helpful context, thanks for writing it out.

You’re right that Next wants to be your backend and thats exactly why I kept the real backend separate in Go.

The Go backend handles all auth, billing, database, everything.

Next is just a frontend that calls the API. So if Next keeps changing things or pushes too hard toward Vercel, you swap it out. The backend doesnt care.

The white-label / custom domain point is interesting, hadnt thought about that edge case. Good to keep in mind.

Honestly the backend is the important part here. The frontend is just one way to consume it