Use variant declarations instead of custom methods

app/models/user.rb

@@ -9,7 +9,11 @@ class User < ApplicationRecord
   # File attachments
   #
 
-  has_one_attached :avatar
+  has_one_attached :avatar do |attachable|
+    attachable.variant :small, resize_to_fill: [64, 64]
+    attachable.variant :medium, resize_to_fill: [256, 256]
+    attachable.variant :large, resize_to_fill: [512, 512]
+  end
 
   #
   # Relations
@@ -163,14 +167,6 @@ class User < ApplicationRecord
     @display_name ||= ldap_entry[:display_name]
   end
 
-  def avatar_64px
-    avatar.variant(resize_to_fill: [64, 64])
-  end
-
-  def avatar_256px
-    avatar.variant(resize_to_fill: [256, 256])
-  end
-
   def services_enabled
     ldap_entry[:service] || []
   end

app/views/settings/_profile.html.erb

@@ -41,7 +41,7 @@
       <div class="flex items-center gap-6">
         <% if current_user.avatar.attached? %>
         <p class="flex-none">
-          <%= image_tag current_user.reload.avatar_256px, class: "h-24 w-24 rounded-lg" %>
+          <%= image_tag current_user.reload.avatar.variant(:medium), class: "h-24 w-24 rounded-lg" %>
         </p>
         <% end %>
         <div class="grow">