refactor: restructure repo into src/ site/ dist/ vendor/ packs/

Separate framework source from website:
- src/layers/ + src/main.css: CSS framework source (was assets/css/)
- site/: Hugo website (content/, layouts/, hugo.toml)
- dist/: built output (asw.css, asw.min.css)
- vendor/open-props/: vendored dependency with version tracking
- Hugo module mounts: dist/ → static, site runs from site/

Build: hugo --source site/ passes (105 pages).
npm run build produces dist/asw.css.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

site/content/articles/getting-started.md

@@ -0,0 +1,51 @@
+---
+title: "Getting Started with ASW-Hugo"
+description: "How to set up the ASW-Hugo pack in your Hugo project."
+date: 2026-04-08
+tags: [setup, hugo, asw]
+ai-disclosure: "generated"
+ai-model: "claude-sonnet-4-5"
+ai-provider: "Anthropic"
+
+---
+
+# Getting Started with ASW-Hugo
+
+The ASW-Hugo pack is a theme that outputs [Agentic Semantic Web](https://asw.trentuna.com/) semantic HTML from your Hugo Markdown content.
+
+## Installation
+
+1. Copy or symlink `packs/hugo/` from the ASW repo:
+   ```bash
+   ln -s /path/to/agentic-semantic-web/packs/hugo/ themes/asw-hugo
+   ```
+
+2. Set `theme = "asw-hugo"` in your `hugo.toml`.
+
+3. Add tag taxonomy:
+   ```toml
+   [taxonomies]
+     tag = "tags"
+   ```
+
+4. Wire ASW CSS:
+   ```bash
+   cp /path/to/agentic-semantic-web/agentic.css \
+      themes/asw-hugo/static/css/asw.css
+   ```
+
+5. Build:
+   ```bash
+   hugo
+   ```
+
+## What you get
+
+- Semantic HTML output: `<article>`, `<section data-layout="grid">`, `<aside data-callout>`
+- Tag navigation at `/tags/`
+- Callout blocks: `{{</* callout note */>}} ... {{</* /callout */>}}`
+- Wikilinks: `{{</* wikilink "Text" "/path/" */>}}`
+
+{{< callout tip >}}
+The ASW-Hugo pack uses **system font stacks** by default — no external font loading required.
+{{< /callout >}}