LibrariesStandards SDKHCS-21: Adapter RegistryHCS-21 Adapter Registry HCS-21 Adapter RegistryRegister deterministic adapters with HCS-1 manifests, package integrity, and appnet/Flora context.📖HCS-21 Adapter Registry SDK OverviewExplore📄Server SDKExplore📄Browser SDKExplore📄TransactionsExplore📄API ReferenceExplore