UI animation

The model knows what a card entrance is. It doesn't know this card should take 280 ms, the one behind it should start 60 ms later, and both must be interruptible mid-flight. Pick from the numbers; deviate on purpose, never by accident. Every animation answers one question: what changed, and where did it go?

The optional Animista catalog adds exact preset names and recorded preview settings from Ana Travas's animista.json and the supplied play catalog; its defaults remain separate from the product rules below. [Animista, animista.json and animista-play-catalog.md]

Apply only the routes and checks for the selected job. Read a linked skill's named file from its installed folder when available, or from the linked source. Report an unavailable required reference instead of inventing it. [skill-authoring, DISTRIBUTION.md#composing-skills]