v0.5.0

Breaking changes

• Integration required. Add astroShell({ config, styles }) from
  @brainage04/astro-shell to astro.config.mjs. It sets the GitHub Pages site/base
  from PUBLIC_SITE_URL/PUBLIC_BASE_PATH, provides the site config to SiteLayout,
  loads site styles after the shell's, and injects /404.
• SiteLayout reads config from the integration; don't spread siteConfig into it.
  Props: title? (omit on the home page — the title === 'Home' check is gone),
  description?, image?, ogType?, canonicalHref?. Delete local SiteLayout
  wrappers and 404.astro.
• SiteConfig: ownerHref and ownerName are required (no brainage04 defaults).
  New optional year.
• Tokens renamed (old names removed):
  • --accent-cyan → --accent-primary
  • --accent → --accent-secondary
  • --accent-yellow → --accent-highlight
  • --shadow-soft / --panel-shadow → --shadow-raised
  • --font-body / --font-display → --font-mono
  • --accent-green removed
• .action-button now controls its own size, so <button class="action-button">
  matches <a class="action-button">. Drop is-="button" and any height workarounds.

Added

• themes/rose.css
• Components: StatCard, ProfileCard
• Utilities: .meta-row, .section-heading, .chip-list, .table-wrap--stack,
  site-wide reduced-motion rule
• Presets: @brainage04/astro-shell/eslint, /prettier, /tsconfig.json
• Reusable workflows: .github/workflows/site-validate.yml and site-deploy.yml
  (workflow_call; the deploy workflow takes an optional ref input)
• @brainage04/astro-shell/navigation: isNavItemActive

Fixes

• Scanline overlay now sits behind content.
• PageHeader h1 is 16ch wide.
• Number inputs use the --control-* tokens.
• A root-level prefix nav item no longer matches every page under a non-root base.
• Test files are no longer included in the package.

See the README's "Migrating from 0.4" section for step-by-step instructions.