The DevSeeder was creating approved persons without linked User
accounts, which can't happen in production (approval flow always
creates accounts). Added linkUsersToApprovedPersons() helper that
runs after person creation in each event seeder, creating User
accounts via firstOrCreate for approved and no_show persons that
lack user_id.
Also added safeguard tests verifying the approval flow creates
user accounts and reuses existing ones.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
bert.hausmans
5d8a749cb3