Add a list_sign_in_at field for users so magick links work

db/migrate/20251026113035_add_last_sign_in_at_to_users.rb

@@ -0,0 +1,5 @@
+class AddLastSignInAtToUsers < ActiveRecord::Migration[8.1]
+  def change
+    add_column :users, :last_sign_in_at, :datetime
+  end
+end