Phase 4: component library

The approved element rules and ornament kit as Astro components in
packages/ui: buttons, pills, chips, filters, kickers, notices, fields and
cards; star paths, the header divider, tick scales and rings, seals and
edge seals, gilt corners, dust and placeholder art; the site header,
footer and page shell. Brand fonts are self-hosted. A gallery page shows
everything, and astro check now runs with the root typecheck.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012aSbo2D1qP8cMFQCykf7kx

packages/ui/astro.config.mjs

@@ -0,0 +1,12 @@
+// The gallery: one static page that shows every component, for review
+// against the design canvas. The site itself imports the components.
+import { defineConfig } from "astro/config";
+
+export default defineConfig({
+  output: "static",
+  build: { format: "file", assets: "assets" },
+  devToolbar: { enabled: false },
+  // Bundle astro's own cookie (2.x) into the prerender step; left external it
+  // resolves to the older copy express hoists to the workspace root.
+  vite: { environments: { prerender: { resolve: { noExternal: ["cookie"] } } } },
+});