Restyle to Tokyo Night, matching waffles.yttrx.com's palette

Overrides Bootstrap 5.3's native dark color-mode tokens with the exact
Tokyo Night hex values waffles.yttrx.com's Compost/Tailwind theme uses
(same primary blue, neutral backgrounds, etc.), so the two sites share
one visual identity, plus repoints the stale GitHub source link to Gitea.

templates/index.html

@@ -3,13 +3,13 @@
 {% block content %}
 <div class="row">
     <div class="col-lg-8 mx-auto">
-        <div class="jumbotron bg-light p-5 rounded">
+        <div class="jumbotron jumbotron-tn p-5 rounded">
             <h1 class="display-4">Welcome to Finger Web!</h1>
             <p class="lead">A simple web interface to the unix finger command.</p>
             <hr class="my-4">
             <p><a href="https://en.wikipedia.org/wiki/Finger_(protocol)">Finger</a> is a utility from 1971 written to discover user information on remote unix systems. While its use has fallen off, you can sometimes still find active finger servers where users provide information about themselves.</p><p>See <a href="/finger/[email protected]">[email protected]</a> as an example :)</p>
             <hr class="my-4">
-            <p>This site was written by <a href="https://yttrx.com/@waffles">waffles</a> (<a href="https://github.com/waffle2k/finger-web/">source code</a>) but inspired by <a href="https://benbrown.com">Ben Brown's</a> <a href="https://happynetbox.com/">happy net box</a> project.</p>
+            <p>This site was written by <a href="https://yttrx.com/@waffles">waffles</a> (<a href="https://gitea.blairhaus.net/pmb/finger-web">source code</a>) but inspired by <a href="https://benbrown.com">Ben Brown's</a> <a href="https://happynetbox.com/">happy net box</a> project.</p>
         </div>
     </div>
 </div>