Update gh-pages

Store path: /nix/store/5mdrpw34cypm43qyzzi2izwly36qbbz0-website

Author: hercules-ci[bot]

404.html

@@ -32,10 +32,11 @@
         <!-- Custom theme stylesheets -->
 
 
-        <!-- Provide site root to javascript -->
+        <!-- Provide site root and default themes to javascript -->
         <script>
-            var path_to_root = "";
-            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
+            const path_to_root = "";
+            const default_light_theme = "light";
+            const default_dark_theme = "navy";
         </script>
         <!-- Start loading toc.js asap -->
         <script src="toc.js"></script>
@@ -45,8 +46,8 @@
         <!-- Work around some values being stored in localStorage wrapped in quotes -->
         <script>
             try {
-                var theme = localStorage.getItem('mdbook-theme');
-                var sidebar = localStorage.getItem('mdbook-sidebar');
+                let theme = localStorage.getItem('mdbook-theme');
+                let sidebar = localStorage.getItem('mdbook-sidebar');
 
                 if (theme.startsWith('"') && theme.endsWith('"')) {
                     localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
@@ -60,7 +61,8 @@
 
         <!-- Set the theme before any content is loaded, prevents flash -->
         <script>
-            var theme;
+            const default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? default_dark_theme : default_light_theme;
+            let theme;
             try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
             if (theme === null || theme === undefined) { theme = default_theme; }
             const html = document.documentElement;
@@ -73,8 +75,8 @@
 
         <!-- Hide / unhide sidebar before it is displayed -->
         <script>
-            var sidebar = null;
-            var sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
+            let sidebar = null;
+            const sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
             if (document.body.clientWidth >= 1080) {
                 try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
                 sidebar = sidebar || 'visible';
@@ -110,6 +112,7 @@
                             <i class="fa fa-paint-brush"></i>
                         </button>
                         <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
+                            <li role="none"><button role="menuitem" class="theme" id="default_theme">Auto</button></li>
                             <li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
                             <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
                             <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>