# Presentations-as-Code

The tutorial chapters in `docs/` remain the maintained knowledge. Presentation YAML selects messages and a teaching sequence; it does not contain chapter copies. Review the selected messages against their linked chapters when either changes. Source links provide traceability, not automatic synchronization or approval.

`document-as-code-intro.yaml` uses chapters 1, 2, 9, and 10. It builds at `/document-as-code-lab/presentations/document-as-code/`. The presentation index is `/document-as-code-lab/presentations/`.

Two complementary ten-slide packs are also defined here:

- `information-model.yaml`: concept and mechanics at `/presentations/information-model/`.
- `information-value.yaml`: benefits, limitations, and adoption at `/presentations/information-value/`.

These paths use the site's `/document-as-code-lab/` prefix. Each new pack has a readable `/notes/` page generated from the same YAML, with chapter references. The homepage links to both packs; the index retains the original introduction. All decks and note pages are included in the GitHub Pages deployment.

## Define a Deck

`lab-architecture.yaml` adds a nine-slide tour of the maintained sources, Astro, browser components, Actions/Pages, and the Microsoft 365 comparison. It builds at `/presentations/lab-architecture/`, with notes at `/presentations/lab-architecture/notes/`. It uses the same slide components, Reveal.js runtime, and Pages deployment as the other decks.

Add a `.yaml` file in this folder. `slug`, `title`, `description`, and `slides` are required. Each slide has a unique `id`, `type`, `title`, and `sources` list of existing `docs/*.md` paths. An optional plain-text `notes` field supplies speaker notes. The slug defines its route; the slide ID defines its hash link, such as `#/review`.

```yaml
slug: my-introduction
title: My introduction
description: A short session based on the tutorial.
slides:
  - id: opening
    type: title
    title: My introduction
    subtitle: A useful starting point
    sources: [docs/01-introduction.md]
```

Four slide types are available:

| Type | Fields beyond the shared fields |
| --- | --- |
| `title` | `subtitle`, optional `context` |
| `content` | `message`, up to four `bullets`, optional `image` with `path`, `alt`, and optional `caption` |
| `comparison` | `left` and `right`, each with a `title` and up to four `items` |
| `diagram` | `message`, two to five `steps` with `label` and `detail`, optional `outputs` and `caption` |

Image paths are repository-relative under `assets/`. Plain text is escaped by Astro, not interpreted as HTML. The schema in `site/src/lib/presentations.ts` rejects unknown fields, missing chapters, duplicate deck slugs, duplicate slide IDs, and missing image files during builds. Keep text short and inspect the rendered result: schema validation does not establish that text fits or that a message is correct.

## Render and Verify

Use the existing site commands from `site/`: `npm run dev`, `npm run check`, and `npm run build`. The existing Python setup and full-history requirements still apply. `npm run preview` serves the production build. All decks use the same Astro build and GitHub Pages deployment as the documentation.

Astro reads YAML and renders `src/components/slides/`. `PresentationLayout.astro` initializes [Reveal.js](https://revealjs.com/), which owns navigation, overview, progress, transitions, fullscreen, and slide hashes. Styling is in `src/styles/presentations.css`; there is no second application or build system.

Right/PageDown and Left/PageUp navigate. Home and End jump to the first and last slide. O toggles overview, Escape closes overview, and F enters fullscreen; use Escape to leave fullscreen. The toolbar provides overview and fullscreen buttons. Chapter source links leave the deck; browser Back returns to its slide hash.

Check desktop and narrow screens, every slide, source links, images, and keyboard controls under the configured base path. Check the published pages after deployment as well. Speaker notes are separate static reading pages, not a synchronized presenter window. PDF/PowerPoint export is not configured.