Add roles for users.

priv/repo/migrations/20250411061857_update_user_to_add_role.exs

@@ -0,0 +1,21 @@
+defmodule DecentralisedBookIndex.Repo.Migrations.UpdateUserToAddRole do
+  @moduledoc """
+  Updates resources based on their most recent snapshots.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`
+  """
+
+  use Ecto.Migration
+
+  def up do
+    alter table(:users) do
+      add :role, :text, null: false, default: "user"
+    end
+  end
+
+  def down do
+    alter table(:users) do
+      remove :role
+    end
+  end
+end