Equals

Returns true when `compareLeft` and `compareRight` evaluate to equal values. URI equality for ReferenceKanonak / SubjectKanonak operands (compares publisher + package_ + name; version is ignored — equality is identity-by-name, not by version). Value equality for string / number / boolean literals. Cross-kind (URI vs literal, string vs number, etc.) returns false — never errors. Either operand undefined returns false (RDF spec: missing values aren't equal to anything).