* Sync owner email to Stripe when changed
When an account owner changes their email address, update the
corresponding Stripe customer record via a background job.
Also handles ownership transfers: when a user becomes the account
owner, their email is synced to Stripe.
Responsibility chain:
- User::NotifiesAccountOfEmailChange triggers on owner identity change
or when a user becomes owner
- Account::Billing#owner_email_changed enqueues sync job
- Account::SyncStripeCustomerEmailJob performs the update with
polynomial backoff retries
- Account::Subscription#sync_customer_email_to_stripe calls Stripe API
* Address PR feedback: error handling and test coverage
- Handle Stripe::InvalidRequestError in sync_customer_email_to_stripe
(mirrors cancel method behavior for deleted customers)
- Add test for deactivated owner (owner with nil identity)
- Add test for deleted Stripe customer scenario
Jeremy Daer