## Each vault demo gets its own page

- **Live demos is now a nav group of four**: the side-by-side overview plus a dedicated page per
  vault — `demo-risk-graph-explorer.html`, `demo-agentic-browser-isolation.html`,
  `demo-risk-mandate-field.html` — mirroring how sgit.ai gives each published vault its own page.
- Each page carries the auto-opening embed front and centre, the published read key, **four things
  to try in your first five minutes**, a walkthrough of why the vault is shaped the way it is
  (the seven-views spine and fact-derived disagreement for the explorer; the fractal register and
  the no-deny door for browser isolation; grant-vs-mandate applied to ourselves — an app using an
  LLM whose key it cannot read — for the field demo), and cross-links to the other two.
- **One template, three pages.** The build now supports shared-source pages: a `PAGE_CONFIG` entry
  can declare `src` (a sibling directory it shares) plus `template`, per-page `tokens` for
  title/description, and a `vault` id injected as page data. The three pages are one template and
  one component set rendered three times — a bug fixed once is fixed everywhere.
- The overview keeps all three embeds and now links each card to its full walkthrough.
- Smoke: 19 groups — per-page titles substituted, one embed per vault page, walkthrough and
  cross-links present, and the nav group derived from the manifest as usual.