diff --git a/graph/graph.go b/graph/graph.go
index c7dc5e1..f231d59 100644
--- a/graph/graph.go
+++ b/graph/graph.go
@@ -31,6 +31,10 @@ const (
 	NodeTypeEnd NodeType = "end"
 	// NodeTypeRouter represents a conditional routing node
 	NodeTypeRouter NodeType = "router"
+	// NodeTypeQuality represents a code quality analysis node
+	NodeTypeQuality NodeType = "quality"
+	// NodeTypeExecution represents an execution journal node
+	NodeTypeExecution NodeType = "execution"
 )
 
 // NodeKind classifies a node by the ecosystem view to which it belongs.
@@ -58,7 +62,7 @@ func ParseNodeKind(s string) (NodeKind, error) {
 // ParseNodeType normalizes a graph node type.
 func ParseNodeType(s string) (NodeType, error) {
 	switch NodeType(strings.ToLower(strings.TrimSpace(s))) {
-	case NodeTypeAgent, NodeTypeTool, NodeTypeFunction, NodeTypeStart, NodeTypeEnd, NodeTypeRouter:
+	case NodeTypeAgent, NodeTypeTool, NodeTypeFunction, NodeTypeStart, NodeTypeEnd, NodeTypeRouter, NodeTypeQuality, NodeTypeExecution:
 		return NodeType(strings.ToLower(strings.TrimSpace(s))), nil
 	default:
 		return "", fmt.Errorf("graph: unknown node type %q", s)