Port vault section (5 pages) and docs section (11 pages)

- content/vault/: _index.md, diff.md, session.md, status.md, tasks.md, wikilinks.md
- content/docs/: _index.md, introduction, tokens, reset, semantic-html,
  components, data-attributes, navigation, layouts, charts, chroma, accordion-dialog

96 pages build clean (was 36). Docs use sidebar nav + TOC layout.
Vault uses sidebar with section fallback (no vault menu configured yet).
URLs fixed: playground refs → asw.trentuna.com.

Closes: asw#12, asw#9

content/vault/wikilinks.md

@@ -0,0 +1,26 @@
+---
+title: "Wikilinks"
+description: "Internal knowledge-graph links styled as dotted underlines."
+section: vault
+prev-url: "tasks/"
+prev-title: "Tasks"
+next-url: "status/"
+next-title: "Status"
+type: vault
+date: 2026-04-09
+tags: ["vault", "wikilinks", "reference"]
+ai-disclosure: "generated"
+ai-model: "claude-sonnet-4-5"
+ai-provider: "Anthropic"
+
+---
+
+## Overview
+
+Use `data-wikilink` on anchor tags to mark links as internal knowledge-graph references.
+
+```html
+<a href="/vault/tasks/" data-wikilink>Tasks</a>
+```
+
+Renders with a dotted underline distinguishing it from a regular hyperlink.