The two-user app is undefeated. Mine this year was a chore-rotation thing for my partner and me. 16.3's private cache made the per-user state of it disappear.
If you're using this template for a workshop too, send me a link — happy to cross-link. The 16.3 prefetch hints make these landing pages feel instant on a click.
Eight clicks beats an afternoon every time. With 16.3 the announce flow is a server action + a tagged cache — feels almost embarrassing how short it got.
Replacing a spreadsheet is one of the most useful things software can do for a real person. Now imagine doing it in an evening on the 16.3 stack — that's the redesign in practice.
Feedback welcome on the rough cut — the parts I'm least sure about are the ones I most want to fix before the print run. The 16.3 chapter is the one that keeps moving.
The 'two engineers ask independently' rule is the closest thing to a real signal in product work. Most of the 16.3 redesign came from that exact signal repeated three times.