Remove user guide workflow diagram

Author: vahidzee

pages/user-guide/index.yml

@@ -69,22 +69,3 @@ reference:
     - [Renderer / Kind System](md=pages/user-guide/reference/03-renderers.md): map `kind`, templates, and renderer dispatch.
     - [Extension and Customization Guide](md=pages/user-guide/reference/04-extension-guide.md): write extensions that register renderers, hooks, templates, and assets.
     - [Processing Pipeline](md=pages/user-guide/reference/05-processing-pipeline.md): follow the build lifecycle from config loading to output files.
-
-shape:
-  label: Workflow
-  content: |
-    <div class="mermaid">
-    flowchart LR
-      A["Add content to your repo"] --> B["Describe pages in YAML"]
-      B --> C["Render with default extensions"]
-      C --> D["Customize templates and themes"]
-      D --> E["Package reusable formats"]
-    </div>
-
-    Start with the default site. Change one layer at a time only when the
-    project needs it.
-
-    <script type="module">
-      import mermaid from "https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.esm.min.mjs";
-      mermaid.initialize({ startOnLoad: true, theme: "default" });
-    </script>