## Summary
This PR fixes account deletion failures by changing how orphaned user
emails are rewritten during `AccountDeletionService`.
Ref:
https://chatwoot-p3.sentry.io/issues/6715254765/events/e228a5d045ad47348d6c32448bc33b7a/
## Changes (develop -> this branch)
- Updated soft-delete email rewrite from:
- `#{original_email}-deleted.com`
- To deterministic value:
- `#{user.id}@chatwoot-deleted.invalid`
- Added reserved non-deliverable domain constant:
- `@chatwoot-deleted.invalid`
- Replaced the "other accounts" check from `count.zero?` to `exists?`
(same behavior, cheaper query).
- Updated service spec expectation to match deterministic email value
and assert it differs from original email.
## Files changed
- `app/services/account_deletion_service.rb`
- `spec/services/account_deletion_service_spec.rb`
## How to verify
- Run: `bundle exec rspec
spec/services/account_deletion_service_spec.rb`
- Run: `bundle exec rubocop app/services/account_deletion_service.rb
spec/services/account_deletion_service_spec.rb`
- Automate the deletion of accounts that have requested deletion via
account settings.
- Add a Sidekiq job that runs daily to find accounts that have requested
deletion and have passed the 7-day window.
- This job deletes the account and then soft-deletes users if they do
not belong to any other account.
- This job also sends an email to the Chatwoot instance admin for
compliance purposes.
- The Chatwoot instance admin's email is configurable via the
`CHATWOOT_INSTANCE_ADMIN_EMAIL` global config.
---------
Co-authored-by: Sojan Jose <sojan@pepalo.com>
