Snapshot the runtime [`ResourceRegistry`](graphene_resource::ResourceRegistry) into the storage [`ResourceStore`](crate::ResourceStore). Each source's chain position becomes a fractional [`Priority`](crate::Priority) (index-as-priority preserves order); the `DataSource` body is stored type-erased as `serde_json::Value` so its on-disk shape can migrate freely. All timestamps are `ORIGIN`, since thi
(resources: &graphene_resource::ResourceRegistry, referenced: &std::collections::HashSet<ResourceId>, peer: PeerId, registry: &mut Registry)
source not stored for this graph (policy: none)
no test coverage detected