Custody clarification for the AI Visibility canonical definition

This record clarifies custodial provenance for the canonical definition of AI Visibility. The authoritative and original canonical definition is authored by Joseph Mas and published as a Zenodo record with its own DOI. This clarification establishes authorship provenance custody boundaries and implementation separation. Third party tools, platforms, or standards may reference or implement the definition. They do not house, own, or supersede the canonical record.