Type Alias Rule

Rule:
    | Selector
    | { all: readonly Rule[] }
    | { any: readonly Rule[] }
    | { not: Rule }
    | { when: (ctx: RuleCtx) => boolean }

Composable visibility/eligibility rule. Trees of all/any/not nodes over Selector leaves. when is the escape hatch — its closure is opaque to introspection and should be avoided when a declarative form exists. Empty all is true; empty any is false.

Type Alias Rule

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