Text replacement: [key] substitution

Official docs: pixi-vn.com/ink/replacement.

When to use this skill

Use whenever ink text needs to show a value that isn't a plain ink variable — the result of a lookup function, a translation-aware substitution, or anything computed in JS/TS. Use pixi-vn-ink-characters instead if the specific need is "show a character's name" — that's this same mechanism, pre-wired with validation: "characterId".

Why [key] exists

Native ink can inject a variable's value with {name}, but has no syntax to inject the result of an arbitrary JS/TS function or lookup — {name} only ever reads an ink VAR/temp. Pixi'VN adds [key] (square brackets) for exactly that: