Struct ReferenceContext 

pub struct ReferenceContext<'a> {
    pub assets: &'a dyn AssetIndex,
    pub folders: &'a dyn FolderIndex,
    pub urls: &'a dyn UrlIndex,
}

Index handles a classify call needs. Bundled so the signature stays small and a future index can be added without re-touching every caller.

Fields

assets: &'a dyn AssetIndex

folders: &'a dyn FolderIndex

urls: &'a dyn UrlIndex

Link arm only; the build supplies a graph-backed impl in sub-project #4. For unit #1+#2 a Link result is classify-only and this may be a no-op.