Add copy button and timestamp

requirements.txt

@@ -7,3 +7,5 @@ sphinxcontrib-spelling==8.0.0
 sphinxext-opengraph==0.9.1
 sphinx-tabs==3.4.5
 matplotlib==3.9.2
+sphinx-copybutton==0.5.2
+sphinx-gitstamp==0.4.0

src/_themes/oxide/layout.html

@@ -82,7 +82,10 @@
                 {{ title }}
             </nav>
             {% endif %}
-            {% block body %} {% endblock %}
+            {% block body %}{% endblock %}
+            {%- if gitstamp %}
+            <div class="page-timestamp">This site was last updated on {{ gitstamp }}.</div>
+            {%- endif %}
             <div class="giscus"></div>
             <nav>
                 {% if prev %}

src/_themes/oxide/static/oxide.css

@@ -396,6 +396,12 @@ img.fullscreen{
   cursor: pointer;
 }
 
+div.page-timestamp{
+  width: 100%;
+  text-align: right;
+  font-size: calc(var(--text-size) * 0.5);
+}
+
 /* Small screens */
 
 @media (max-width: 1024px) {

src/conf.py

@@ -70,6 +70,8 @@
     "sphinxext.opengraph",
     "sphinx.ext.doctest",
     "sphinx_tabs.tabs",
+    "sphinx_copybutton",
+    "sphinx_gitstamp",
 ]
 
 rst_prolog = """