more updates

internal/diagram.go

@@ -21,6 +21,13 @@ func NewDiagram(description []byte, imgType string) *Diagram {
 	fmt.Printf("DEBUG: After TrimSpace: %q\n", trimmed)
 	fmt.Printf("DEBUG: Still contains newlines: %t\n", strings.Contains(trimmed, "\n"))
 	
+	// Decode NEWLINE markers back to actual newlines for complex diagrams
+	if strings.Contains(trimmed, " NEWLINE ") {
+		trimmed = strings.ReplaceAll(trimmed, " NEWLINE ", "\n")
+		fmt.Printf("DEBUG: After NEWLINE decoding: %q\n", trimmed)
+		fmt.Printf("DEBUG: Now contains newlines: %t\n", strings.Contains(trimmed, "\n"))
+	}
+	
 	return &Diagram{
 		description: []byte(trimmed),
 		lastTouched: time.Now(),