{% extends "base.html" %}

{#
  mkdocs-material theme override.

  Adds:
   - schema.org JSON-LD (SoftwareApplication on /, TechArticle on docs).
     Lets Google index the project as a software product (App
     knowledge-graph card) and individual doc pages as technical
     articles (rich-result eligibility).
   - Open Graph + Twitter card metadata. mkdocs-material emits some
     of these by default; we layer ours on top so the social-preview
     image and the canonical URL are explicit.
   - JSON-LD validates against schema.org's reference and Google's
     rich-result test (Search Console → Inspect URL).
#}

{% block extrahead %}
  {{ super() }}

  {# --- Open Graph / Twitter card --- #}
  <meta property="og:site_name" content="Vacant">
  <meta property="og:type" content="website">
  <meta property="og:title" content="{{ page.title | default(config.site_name) }}">
  <meta property="og:description" content="{{ page.meta.description if page.meta and page.meta.description else config.site_description }}">
  <meta property="og:url" content="{{ page.canonical_url }}">
  <meta property="og:image" content="https://github.com/cosmopig/Vacant/raw/main/assets/social-preview.png">
  <meta property="og:image:alt" content="Vacant — a responsibility-layer residency form for AI agents on top of A2A / MCP">
  <meta property="og:image:width" content="1280">
  <meta property="og:image:height" content="640">
  <meta property="og:locale" content="en_US">

  <meta name="twitter:card" content="summary_large_image">
  <meta name="twitter:title" content="{{ page.title | default(config.site_name) }}">
  <meta name="twitter:description" content="{{ page.meta.description if page.meta and page.meta.description else config.site_description }}">
  <meta name="twitter:image" content="https://github.com/cosmopig/Vacant/raw/main/assets/social-preview.png">

  {# --- Bluesky / fediverse note via the app: protocol-agnostic. --- #}
  <link rel="me" href="https://github.com/cosmopig">

  {# --- schema.org JSON-LD --- #}
  {% if page.is_homepage %}
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "SoftwareApplication",
    "name": "Vacant",
    "alternateName": "Vacant — responsibility-layer residency form for AI agents",
    "applicationCategory": "DeveloperApplication",
    "applicationSubCategory": "Multi-agent infrastructure",
    "operatingSystem": "Linux, macOS, Windows",
    "url": "https://github.com/cosmopig/Vacant",
    "downloadUrl": "https://github.com/cosmopig/Vacant",
    "softwareVersion": "0.1.0",
    "datePublished": "2026-05-06",
    "license": "https://opensource.org/licenses/MIT",
    "programmingLanguage": "Python",
    "description": "Vacant is a stand-alone responsibility layer that sits on top of A2A and MCP. Agents that adopt the vacant residency form gain Ed25519 identity, an append-only signed logbook, and a 5-dimensional Beta-posterior reputation per substrate, with same-controller / same-substrate / same-stylo detection (cost-raising, not preventing).",
    "keywords": "multi-agent, mcp, a2a, reputation, identity, claude, llm",
    "author": {
      "@type": "Person",
      "name": "Cosmo Hsu",
      "alternateName": "cosmopig",
      "url": "https://github.com/cosmopig"
    },
    "offers": {
      "@type": "Offer",
      "price": "0",
      "priceCurrency": "USD"
    },
    "codeRepository": "https://github.com/cosmopig/Vacant",
    "softwareRequirements": "Python 3.12, uv",
    "isAccessibleForFree": true
  }
  </script>
  {% else %}
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "TechArticle",
    "headline": "{{ page.title | default(config.site_name) }}",
    "description": "{{ page.meta.description if page.meta and page.meta.description else config.site_description }}",
    "url": "{{ page.canonical_url }}",
    "image": "https://github.com/cosmopig/Vacant/raw/main/assets/social-preview.png",
    "datePublished": "2026-05-06",
    "dateModified": "{{ build_date_utc.strftime('%Y-%m-%d') if build_date_utc else '2026-05-06' }}",
    "author": {
      "@type": "Person",
      "name": "Cosmo Hsu",
      "alternateName": "cosmopig",
      "url": "https://github.com/cosmopig"
    },
    "publisher": {
      "@type": "Organization",
      "name": "Vacant",
      "url": "https://github.com/cosmopig/Vacant"
    },
    "isPartOf": {
      "@type": "WebSite",
      "name": "Vacant — documentation",
      "url": "{{ config.site_url }}"
    },
    "mainEntityOfPage": "{{ page.canonical_url }}",
    "inLanguage": "en",
    "keywords": "multi-agent, mcp, a2a, reputation, identity, claude, llm"
  }
  </script>
  {% endif %}
{% endblock %}