partition by org_id and add auth

priv/repo/migrations/20260224165602_add_customer_table.exs

@@ -3,7 +3,9 @@ defmodule CustomerService.Repo.Migrations.AddCustomerTable do
 
   def change do
     create table(:customers, primary_key: false) do
-      add :id, :uuid, primary_key: true
+      add :id, :string, primary_key: true
+      add :org_id, :string, null: false
+      add :customer_id, :string, null: false
       add :first_name, :string
       add :last_name, :string
       add :birth_date, :date
@@ -21,6 +23,7 @@ defmodule CustomerService.Repo.Migrations.AddCustomerTable do
       timestamps()
     end
 
+    create index(:customers, [:org_id])
     create index(:customers, [:email])
   end
 end