refactor: apply review notes

priv/repo/migrations/20260220120000_add_join_requests.exs

@@ -34,8 +34,8 @@ defmodule Mv.Repo.Migrations.AddJoinRequests do
 
   def down do
     drop_if_exists unique_index(:join_requests, [:confirmation_token_hash],
-                  name: "join_requests_unique_confirmation_token_hash_index"
-                )
+                     name: "join_requests_unique_confirmation_token_hash_index"
+                   )
 
     drop table(:join_requests)
   end

priv/repo/migrations/20260220120001_alter_join_requests_schema_version_to_integer.exs

@@ -0,0 +1,18 @@
+defmodule Mv.Repo.Migrations.AlterJoinRequestsSchemaVersionToInteger do
+  @moduledoc """
+  Aligns schema_version with Ash attribute type :integer (concept review).
+  """
+  use Ecto.Migration
+
+  def up do
+    alter table(:join_requests) do
+      modify :schema_version, :integer, null: false
+    end
+  end
+
+  def down do
+    alter table(:join_requests) do
+      modify :schema_version, :bigint, null: false
+    end
+  end
+end