Add selected profile overlays

compose.go

@@ -6,9 +6,12 @@ import "gitea.maximumdirect.net/eric/ConfigKit/internal/document"
 // precedence layers. Claims remain ordered by source and declaration traversal;
 // origins retain every source that contributes to a composite mapping.
 type composedDocument struct {
-	root    *document.Node
-	claims  []compositionClaim
-	origins map[string]Origin
+	root       *document.Node
+	claims     []compositionClaim
+	origins    map[string]Origin
+	overlays   []overlayRecord
+	inputBytes int64
+	inputNodes int
 }
 
 type compositionClaim struct {