Retain import inclusion graph during acquisition

internal/engine/compose.go

@@ -8,6 +8,7 @@ import "gitea.maximumdirect.net/eric/ConfigKit/internal/document"
 type composedDocument struct {
 	root           *document.Node
 	acquisition    []acquisitionScope
+	importGraph    importInclusionGraph
 	claims         []compositionClaim
 	sequenceRanges []sequenceRange
 	origins        map[string]Origin
@@ -51,6 +52,7 @@ func cloneComposedDocument(base *composedDocument) *composedDocument {
 	return &composedDocument{
 		root: document.Clone(base.root), claims: cloneCompositionClaims(base.claims),
 		acquisition:    cloneAcquisitionScopes(base.acquisition),
+		importGraph:    base.importGraph.clone(),
 		sequenceRanges: cloneSequenceRanges(base.sequenceRanges),
 		origins:        cloneOriginIndex(base.origins), overlays: cloneOverlayRecords(base.overlays),
 		applications: cloneHistoryApplications(base.applications),