[vannt-dev]

What changed

The playground (playground/index.html, playground/style.css) gets the aiws-factory look. It is
an app, not a marketing page, so only the look changes: no hero, no terminal, no new copy.

• aiws-factory palette (light and dark, still prefers-color-scheme), Be Vietnam Pro and
  JetBrains Mono (ligatures off, so -- and :// read as typed).
• The accent stays #0b6bcb (dark #6cb2ff) with its own soft tint; teal is the second colour
  of the gradient on "playground" in the title. Checkboxes and radios take the accent.
• Fieldsets and code panels as cards: 14px radius, 1px border, the soft shadow. Inputs, pills and
  presets on 8-10px radii; the Copy and Download buttons keep their small dark style on the code
  panels, with a 10px radius and weight 600.
• A sticky top bar (a shield glyph in an accent tile, Docs and npm links) in place of the links
  beside the title; the title and its paragraph are unchanged. The result column now sticks
  below the bar.

Checked

• Playwright against a local server: ticked a stack, picked a preset, toggled a module (the
  "your own selection" note shows), switched to GitLab (its note shows, the GitHub fieldset
  hides), picked "at a tag or commit" (the field shows and the file follows), protected the
  branch (approvals show), picked Apache-2.0 (the file and the warning follow), Copy and
  Download. The same run on the old page gives the same results. No page errors.
• Screenshots light, dark and 390px wide; nothing scrolls sideways at 390px.
• biome check playground clean; vitest run test/playground.test.ts passes.

Fonts, self-hosted

The fonts are served from playground/fonts/ (Be Vietnam Pro 400-800 and JetBrains Mono, Latin
woff2, the same files as governed-agent-sdlc, with both SIL OFL 1.1 licences), declared by
@font-face in style.css, so the page keeps its word: nothing leaves it. pages.yml uploads the
whole playground/ folder, so the fonts deploy with it; the npm package does not include them.
In Playwright on a local server the page makes no request outside it, every woff2 returns 200,
document.fonts.check('16px "Be Vietnam Pro"') is true, and the control run above still passes.