This feels rather drastic, and a "coming soon" so early is no good first impression in my opinion.+page/layout.js is a pretty big part of SvelteKit, so not teaching it ... I don't know, that feels wrong. I think it would be better to keep it, or adjust the text and say "let's assume that this is an external API".

yeah, i intend to follow up with stackblitz ASAP about whyfetch is failing in this context. but having magic hidden routes is just a huge no-no in my opinion

is it on purpose that you only did the+++invalidateAll()+++ and not the---invalidate(..)--- (same question applies to the other invalidate exercises)?

it's just unnecessary — it's clear from context what you're supposed to remove. Having the red and the green butting against each other makes for visual chaos, and makes it harder to understand what you're meant to do IMHO