feat(1099): add payer EIN to ChurchProfile (entity, DTO, migration)
Add PayerEin (nullable string, max 20) to ChurchProfile entity, AppDbContext config, ChurchProfileDto response, UpdateChurchProfileRequest, and ChurchProfileService round-trip — mirroring the Phone/BankRoutingNumber nullable-string pattern. Migration AddPayerEinToChurchProfile adds only the one nullable column to ChurchProfiles. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in: