Airframe theme-v8

The docs look, shared: every product's docs site reads as one family and links to the others. No token values
change; no af- component class changes.

• New published file airframe-suite.html: the suite strip, one quiet row above the docs header that names the
  suite and links each product's public docs site (agent factory, hangar, flightdeck, Tower once public, ai-dlc,
  Airframe), with the 2px product marker under the current one. It is a Material / Zensical partial, rendered
  server side, so it works without JavaScript on Material for MkDocs and on Zensical. A site adds it with config
  only: theme.custom_dir: overrides, a two-line overrides/main.html that extends base.html and includes
  partials/airframe-suite.html in the announce block, and extra.airframe.product: <name> for the current
  item. Tool repos vendor it with sync-airframe.sh (airframe-suite.html overrides/partials/airframe-suite.html).
  The list lives in the partial, not in each site's config, so the family stays identical everywhere.
• airframe-docs.css:
  • .md-banner and .af-suite*: the strip's layout and type (mono capital plane, product name in the display
    face, fg-muted at rest, fg and the --af-product marker when current, fg-subtle for an unlinked item).
    Below 600px the plane words drop and the row scrolls sideways.
  • Page anatomy: the first paragraph after the page title is the lede on every page (h1 + p, fg-muted, .9rem,
    62ch), so a page written as "title, one sentence, sections" reads the same on every site without markup.
  • af-hero--visual: a variant of the home hero with a slot for a real product capture, figure.af-hero__visual
    (image or video, radius-card, a 1px line edge, a mono caption). Words left, the product on the right from
    960px; the visual follows the actions below that.
  • The hero's dot field no longer sits behind the words on phones: below 960px it is a small field at the top
    right, as on the README banners; the headline drops to 2em. On wide screens it starts at 64% so it stays off
    the lede.
  • Tables take the full column width (display: table; width: 100%) instead of shrinking to their content and
    wrapping every cell; wide tables still scroll inside .md-typeset__scrollwrap.
  • Code blocks scroll sideways (long commands are not wrapped): pre > code gets padding-right: 3em so the end
    of the longest line clears the copy button, and .md-clipboard sits on the terminal ground (terminal-bg,
    terminal-dim, terminal-fg on hover) instead of over the glyphs.
  • The plain af-hero no longer draws an empty dot-field stage; the field appears only behind a visual
    (af-hero--visual), as the brand book places it behind hero data.
  • A @media (forced-colors: active) block, the first in the docs mapping: the tab, nav, strip and admonition
    markers become borders in system colors, the dot field and header marker go, swatches and hero visuals keep an
    outline.
• airframe-docs.css and airframe-suite.html are now built from airframe/docs-site/ by scripts/airframe.py build (the CSS gets the release stamp), so check catches drift and the forced-colors test covers them like
  the other stylesheets.