fix: Remove attempts at page-specific metadata extraction

Author: MoenMi

src/_templates/layout.html

@@ -1,31 +1,26 @@
 {% extends "!layout.html" %}
-
 {%- block extrahead %}
   {{ super() }}
-
-  {% set metadata = meta if meta is defined and meta is not none else {} %}
   {% set site_name = "University of Alabama Libraries Scholarly API Cookbook" %}
   {% set base = (html_baseurl or "https://ua-libraries-research-data-services.github.io/UALIB_ScholarlyAPI_Cookbook/") %}
   {% set page_url = base ~ pagename ~ ('' if pagename.endswith('.html') else '.html') %}
-
-  {# Prefer page description; fallback to a global site description #}
-  {% set site_desc = "Example tutorials for working with scholarly APIs for academic scholarly research and teaching using Python and R." %}
-  {% set page_desc = metadata.get("description") %}
-  {% set desc = page_desc or site_desc %}
-
-  {% set og_title = metadata.get("og:title") or (title|striptags) %}
-  {% set og_type  = metadata.get("og:type") or "website" %}
-
-  <!-- Canonical Link -->
+  <!-- Canonical Link and Sitemap -->
   <link rel="canonical" href="{{ page_url }}" />
-
+  <link rel="sitemap" type="application/xml" title="Sitemap" href="{{ base }}sitemap.xml">
+  {% set og_title = title|striptags %}
+  {% set site_desc = "Example tutorials for working with scholarly APIs for academic research and teaching using Python and R." %}
   <!-- Open Graph -->
   <meta property="og:site_name" content="{{ site_name }}" />
   <meta property="og:title" content="{{ og_title }}" />
-  <meta property="og:description" content="{{ desc }}" />
-  <meta property="og:type" content="{{ og_type }}" />
+  <meta property="og:description" content="{{ site_desc }}" />
+  <meta property="og:type" content="website" />
   <meta property="og:url" content="{{ page_url }}" />
-
+  <!-- Twitter Card -->
+  <meta name="twitter:card" content="summary_large_image" />
+  <meta name="twitter:title" content="{{ og_title }}" />
+  <meta name="twitter:description" content="{{ site_desc }}" />
+  <meta name="twitter:image" content="{{ base }}images/UALIB_logo.png">
+  <meta name="twitter:image:alt" content="{{ title }}">
   <!-- LD+JSON -->
   <script type="application/ld+json">
     {
@@ -102,5 +97,4 @@
       ]
     }
   </script>
-
 {%- endblock %}

src/about/introduction.rst

@@ -1,7 +1,3 @@
-.. meta::
-   :title: Scholarly API Cookbook Introduction
-   :og:type: article
-
 Introduction
 %%%%%%%%%%%%%%