Function sellerAdvertises31

sellerAdvertises31(
    caps:
        | {
            supportedVersions?: string[];
            buildVersion?: string;
            _raw?: Record<string, unknown>;
        }
        | undefined,
): boolean
Does the seller authoritatively advertise AdCP 3.1+ support?

supportedVersions is the negotiation field; the response envelope's adcp_version is direct evidence of the wire release the seller just served. buildVersion is advisory and MUST NOT select a wire shape.
Parameters
- caps:
      | {
          supportedVersions?: string[];
          buildVersion?: string;
          _raw?: Record<string, unknown>;
      }
      | undefined
Returns boolean
- Defined in src/lib/utils/adcp-version-config.ts:183