Populate the PAYER's TIN (EIN) box in Form1099FormService.BuildCopyBHtml
from ChurchProfile.PayerEin (blank when null, matching prior behaviour).
Add payerEin field to ChurchProfileDto TS model (flows into
UpdateChurchProfileRequest via the existing Omit type) and a text input on
the Church Info tab of the church-profile settings page, mirroring the
Routing # field pattern. CSV left unchanged — adding a payer context line
would break the existing ExportFilingCsvAsync assertion (3 lines expected).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Adds I1099FormService and Form1099FormService: an IRIS/accountant filing-data
CSV (one row per reportable recipient) and a plain-paper recipient Copy B
1099-NEC PDF rendered via the DevExpress RichEdit/Office API (mirroring
CheckPrintService). Includes a CSV-export unit test over a stub report service.
Service lives in namespace ROLAC.API.Services (not ...Services.Form1099) to
avoid shadowing the ROLAC.API.Entities.Form1099 constants class.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Chris Chen