reworked structure and improved performance to handle 500 concurrent users

app/templates/index.html

@@ -44,7 +44,7 @@
           <img src="{{ url_for('static', filename='discord_icon.svg') }}" class="h-8 w-8">
         </a>
 
-        <a href="/admin">
+        <a href="{{ url_for('admin.admin') }}">
             <button class="bg-primary hover:bg-blue-700 text-white px-3 py-1 rounded-md transition">
             Admin
             </button>
@@ -141,7 +141,7 @@
                     <p class="text-muted text-sm">{{ deck.description }}</p>
                 </a>
                 {% if deck.export_file %}
-                <a href="/exports/{{deck.course.folder}}/{{ deck.deck }}/{{ deck.export_file}}" 
+                <a href="/slides/{{deck.course.folder}}/{{ deck.deck }}/export" 
                     class="inline-flex items-center justify-center flex-shrink-0 h-10 w-10 text-on-primary hover:bg-primary/90 transition" 
                     download title="Download Presentation">
                     <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">