A SET of graph node ids — the patchbay's filter and ignore collections, whose elements are
PipeWire node names rather than channel refs. Duplicates collapse (a set is a set) and order
is the operator's; an empty id names nothing in the graph and a control character cannot be
in a node name, so both are refused rather than silently dropped.
A SET of graph node ids — the patchbay's filter and ignore collections, whose elements are PipeWire node names rather than channel refs. Duplicates collapse (a set is a set) and order is the operator's; an empty id names nothing in the graph and a control character cannot be in a node name, so both are refused rather than silently dropped.