Delete templates/not_found.html

templates/not_found.html

@@ -1,9 +0,0 @@
-{% extends "base.html" %}
-
-{% block content %}
-  <div style="min-height: 50vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;">
-    <p class="mono" style="color: var(--accent); font-size: 14px; margin-bottom: 8px;">404</p>
-    <h1 style="font-size: 20px; margin: 0 0 12px;">This lecture doesn't exist</h1>
-    <a href="/" class="mono" style="color: var(--blue); font-size: 14px;">← back to all lectures</a>
-  </div>
-{% endblock %}