Detect inheritance directives without paths

internal/engine/inheritance_load.go

@@ -3,14 +3,28 @@ package engine
 import "gitea.maximumdirect.net/eric/ConfigKit/internal/document"
 
 func containsInheritanceDirective(root *document.Node) bool {
-	found := false
-	walkDocument(root, Path{}, func(path Path, _ *document.Node) {
-		if len(path.segments) != 0 && path.segments[len(path.segments)-1].kind == pathSegmentKey &&
-			path.segments[len(path.segments)-1].key == inheritanceKey {
-			found = true
+	var visit func(*document.Node) bool
+	visit = func(node *document.Node) bool {
+		if node == nil {
+			return false
 		}
-	})
-	return found
+		switch node.Kind {
+		case document.Mapping:
+			for _, entry := range node.Mapping {
+				if entry.Key == inheritanceKey || visit(entry.Value) {
+					return true
+				}
+			}
+		case document.Sequence:
+			for _, child := range node.Sequence {
+				if visit(child) {
+					return true
+				}
+			}
+		}
+		return false
+	}
+	return visit(root)
 }
 
 func inheritanceVersionDiagnostic(rule *VersionRule, expanded *inheritanceScope) *Diagnostic {