this looks really cool but what I'd like to see is something like this packaged as an addon to just a sveltekit install, as in you can choose which pieces you need, more modular, could even break it out into separate packages in a mono repo, @kfs/db, @kfs/auth, @kfs/stripe, @kfs/lemonsqueezy,

the main reason being if I want updates I'd need to merge in upstream and manage merge conflicts etc with own changes, the other way I'd just update packages and fix breaking changes.