r.tree(...)
Overview
Section titled “Overview”r.tree(provider) — the feature’s top-level tree provider: a subscribe
function (emit-fn in, unsubscribe-fn out) that feeds workspaces with
navigation: "tree". Features without r.tree() are invisible there —
provider presence IS the filter, there is no workspace mapping.
Closure-only, no header form: the Designer renders a read-only code
block, the AI patcher overwrites the span verbatim.
From packages/framework/src/engine/feature-ast/patterns.ts -> TreePattern