Add graph markdown and canvas outputs

toolkit/cmd/gsp/main.go

@@ -70,7 +70,7 @@ Usage:
   gsp trace <id> [--root .] [--depth 3] [--out trace.json]
   gsp flatten <id> [--root .] [--depth 3] [--include-type a,b] [--exclude-type a,b] [--out flattened.json]
   gsp pack <id> [--root .] [--depth 3] [--budget 12000] [--out context-pack.json]
-  gsp graph [id] [--root .] [--depth 3] [--format json|mermaid] [--out graph.json]
+  gsp graph [id] [--root .] [--depth 3] [--format json|mermaid|md|canvas] [--out graph.json]
   gsp stage-check --stage implement [--root .] [--out stage-report.json]
 `)
 }
@@ -267,7 +267,7 @@ func runGraph(args []string) error {
 	root := commonRoot(fs)
 	out := commonOut(fs)
 	depth := fs.Int("depth", 3, "maximum relation depth when id is provided; -1 means unlimited")
-	format := fs.String("format", "json", "json or mermaid")
+	format := fs.String("format", "json", "json, mermaid, md, or canvas")
 	if err := fs.Parse(normalizeFlagArgs(args)); err != nil {
 		return err
 	}
@@ -283,13 +283,22 @@ func runGraph(args []string) error {
 		return err
 	}
 	graph := project.Graph(id, *depth)
-	if *format == "mermaid" {
+	switch *format {
+	case "mermaid":
 		return writeText(*out, graph.Mermaid())
-	}
-	if *format != "json" {
+	case "md":
+		return writeText(*out, graph.Markdown())
+	case "canvas":
+		data, err := graph.Canvas()
+		if err != nil {
+			return err
+		}
+		return writeBytes(*out, data)
+	case "json":
+		return writeJSON(*out, graph)
+	default:
 		return fmt.Errorf("unsupported graph format %q", *format)
 	}
-	return writeJSON(*out, graph)
 }
 
 func runStageCheck(args []string) error {