Fix tests - add missing files

db/migrate/20251230073656_add_pkce_options_to_applications.rb

@@ -0,0 +1,14 @@
+class AddPkceOptionsToApplications < ActiveRecord::Migration[8.1]
+  def change
+    # Add require_pkce column for confidential clients
+    # Default true for new apps (secure by default), existing apps will be false
+    add_column :applications, :require_pkce, :boolean, default: true, null: false
+
+    # Set existing applications to not require PKCE (backwards compatibility)
+    reversible do |dir|
+      dir.up do
+        execute "UPDATE applications SET require_pkce = false WHERE id > 0"
+      end
+    end
+  end
+end