feat(cli): make tree the sole default for glint graph

Previously glint graph with no mode printed tree + separator + includes
Mermaid. Now glint graph defaults to tree only; use glint graph includes
for the Mermaid include-dependency output. Simplifies the common case
and makes the default output immediately actionable.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

FEATURES.md

@@ -317,10 +317,10 @@ jobs or pipeline-level findings.
 
 | Mode | Output |
 |------|--------|
-| `tree` (default) | Terminal job tree: stages as branches, jobs as leaves; annotated with `[manual]`, `[delayed]`, `[trigger]` where applicable |
+| `tree` *(default)* | Terminal job tree: stages as branches, jobs as leaves; annotated with `[manual]`, `[delayed]`, `[trigger]` where applicable |
-| `includes` | Mermaid flowchart to stdout; colour-coded nodes by include type (local, remote, project, component, template) |
+| `includes` | Mermaid flowchart of include dependencies to stdout; colour-coded by include type (local, remote, project, component, template) |
 | `pipeline` | GitLab CI-style SVG/PNG written to `--out` directory (default: `glint-out/`); converted to PNG when `rsvg-convert`, `inkscape`, or `magick` is available |
-| `all` | `includes` to stdout + `pipeline` file path to stderr |
+| `all` | `includes` Mermaid to stdout + `pipeline` SVG/PNG path to stderr |
 
 **`glint graph pipeline --format <FORMAT>`**
 

README.md

@@ -21,7 +21,7 @@ A local tool to validate and lint `.gitlab-ci.yml` pipelines without needing a G
 - **Simulates context** — `--branch`, `--tag`, `--source` flags evaluate `rules:if:` and `only`/`except` to show which jobs would be active, manual, or skipped; `--context branch=main --context branch=develop` prints a multi-column comparison table across multiple contexts in one run
 - **Multiple output formats** — `--format text` (default, colorized and column-aligned), `json`, `sarif` (GitHub Code Scanning / GitLab SAST), `junit`, `github` (PR annotations); exits `2` on errors, `10` on warnings only
 - **Project config** — `.glint.yml` for rule suppression, severity overrides, token/URL/proxy defaults; `# glint: ignore RULE` for per-job inline suppression; `--no-warn` flag to suppress all warnings
-- **Graph visualization** — `glint graph` prints a terminal job tree; `glint graph pipeline` renders a GitLab CI-style SVG/PNG; `--format mermaid` emits a Mermaid flowchart; `--format html` produces a self-contained HTML file with pan/zoom and a job-detail sidebar; `--no-skipped` hides jobs that would not run in the given context
+- **Graph visualization** — `glint graph` prints a terminal job tree (default); `glint graph includes` emits a Mermaid include-dependency graph; `glint graph pipeline` renders a GitLab CI-style SVG/PNG; `--format mermaid` or `--format html` for alternative pipeline output; `--no-skipped` hides jobs that would not run in the given context
 - **LSP server** — `glint lsp` starts a Language Server Protocol server over stdin/stdout; connect with any LSP client to get inline diagnostics (rule ID as code, error/warning severity) in VS Code, Neovim, Emacs, JetBrains, etc.
 - **VS Code extension** — `editors/vscode/` wraps the LSP server; inline squiggles for every glint rule directly in the editor
 

cmd/glint/main.go

@@ -498,12 +498,12 @@ func cmdGraph(args []string) {
 	format := fs.String("format", "svg", "pipeline output format: svg, mermaid, or html")
 	fs.Usage = func() {
 		fmt.Fprintf(os.Stderr, "glint %s\n\n", version)
-		fmt.Fprint(os.Stderr, `Visualise the pipeline as a job tree and/or Mermaid graph.
+		fmt.Fprint(os.Stderr, `Visualise the pipeline as a job tree or graph.
 
 Usage: glint graph [MODE] [OPTIONS] <PIPELINE>
 
 Arguments:
-  [MODE]      Graph mode; must appear before options [default: tree+includes]
+  [MODE]      Graph mode; must appear before options [default: tree]
               [possible values: tree, includes, pipeline, all]
   <PIPELINE>  Path to the .gitlab-ci.yml file
 
@@ -592,11 +592,11 @@ always evaluated.
 Examples:
   glint graph .gitlab-ci.yml
   glint graph tree .gitlab-ci.yml
+  glint graph includes .gitlab-ci.yml > includes.mmd
   glint graph tree --branch develop .gitlab-ci.yml
   glint graph tree --tag v1.0.0 .gitlab-ci.yml
   glint graph tree --list-vars .gitlab-ci.yml
   glint graph tree --changes src/main.go .gitlab-ci.yml
-  glint graph includes .gitlab-ci.yml > includes.mmd
   glint graph pipeline .gitlab-ci.yml
   glint graph pipeline --out /tmp/graphs .gitlab-ci.yml
   glint graph pipeline --format mermaid .gitlab-ci.yml
@@ -709,11 +709,7 @@ Examples:
 	}
 
 	switch mode {
-	case "default":
+	case "default", "tree":
-		fmt.Print(graph.Tree(p, ctx))
-		fmt.Println("---")
-		fmt.Print(graph.Includes(path, p.Include, cfg))
-	case "tree":
 		fmt.Print(graph.Tree(p, ctx))
 	case "includes":
 		fmt.Print(graph.Includes(path, p.Include, cfg))