/prototype picks a fidelity itself, can build on your existing app, and hands off a scoped brief.
What's wrong with this entry?
The prototype skill names three fidelities, sketch, clickable and wired, defaults to clickable, and states its pick instead of asking you. If you explicitly ask, it can prototype a feature on top of an existing app, either as a screenshot overlay or a shell built from your repo source. A new hand-off step converts the finished prototype into an approved brief split into must-have, nice-to-have and cut.
Every prototype is built at one of three fidelities, and naming it sets
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.221
New "prototype" skill, present in the bundle but hard-disabled
Both mention prototype
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v2.1.223
Version bump to 2.1.223
Both mention prototype