Add snowflake IDs

priv/repo/migrations/20250606132108_create_media_attachments.exs

@@ -2,7 +2,8 @@ defmodule Nulla.Repo.Migrations.CreateMediaAttachments do
   use Ecto.Migration
 
   def change do
-    create table(:media_attachments) do
+    create table(:media_attachments, primary_key: false) do
+      add :id, :bigint, primary_key: true
       add :note_id, references(:notes, on_delete: :delete_all), null: false
       add :file, :string, null: false
       add :mime_type, :string