A2UI/Bloks "basic" catalog node types — confirmed from captured traffic, not a
public spec, so treat this as best-effort autocomplete rather than an
exhaustive guarantee. ref is a builder-only tag (stripped before send) so
another node can reference this one via BloksRef.
A2UI/Bloks "basic" catalog node types — confirmed from captured traffic, not a public spec, so treat this as best-effort autocomplete rather than an exhaustive guarantee.
refis a builder-only tag (stripped before send) so another node can reference this one viaBloksRef.