It's month two of your SaaS. Your co-founder pings you on Slack: "Can we change the hero headline? I think it's confusing." You open the repo, edit a string, push, wait for Vercel, redeploy. Five minutes for a typo.

Three weeks in, you've done this fifteen times.

This is the dirty secret of Next.js SaaS boilerplates. Almost all of them ship "a...