D2 Diagrams

A Good Starting BlockURL copied

```d2
title: Deployment pipeline
width: 80vw
layout: elk
animate_interval: 1200
direction: right
local.code -> github.dev: commit
github.master.workflows -> aws.builders: upload and run
```

The animation example in demo/d2-animation.md is worth reusing when you need a staged story instead of a static diagram. Keep width, layout, and title in frontmatter so the page layout can treat the diagram as a document element instead of a raw SVG blob.