Graph Extension Descriptors

Graph extension descriptors let an app or extension register graph-facing node loaders and morphs while keeping graph topology key-only.

{:id "demo-extension"
 :unit-id "user-demo-extension"
 :schemes ["demo-node"]
 :install-loaders install-loaders}

Required Fields

• :id
• :unit-id
• non-empty :schemes
• :install-loaders

Optional Fields

• :install-morphs
• :refresh-schemes

Loader and morph installers return owner-safe handles. Runtime install failures roll back installed handles and rethrow the failure so callers see the original problem. Duplicate active key-loader or morph registrations fail loudly rather than replacing or shadowing an existing registration.

Graph topology remains key-only: descriptors expose how keys are loaded or morphed, but graph edges and stored topology continue to refer to keys rather than live runtime objects.

See Graph Extension Units for SDK usage and Reloadable Graph Extension Units for maintainer-facing internals.