Finish packaging and change to src-based packaging layout, replace caddy with haproxy for performance, and update docker-compose and Dockerfiles for new packaging.

src/pkmntrade_club/theme/templates/500.html

@@ -0,0 +1,10 @@
+{% extends 'base.html' %}
+{% block title %}500 Server Error{% endblock title %}
+
+{% block content %}
+<div class="container mx-auto max-w-md mt-12 text-center">
+  <h1 class="text-5xl font-bold mb-4">500</h1>
+  <p class="text-xl mb-4">Looks like something went wrong!</p>
+  <a href="{% url 'home' %}" class="btn btn-primary">Return Home</a>
+</div>
+{% endblock content %}