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Emit invoices as validated ZUGFeRD (DATEV) and XRechnung (B2G)
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Completes the eRechnung output path: finalized invoices are emitted as a
ZUGFeRD/Factur-X EN 16931 hybrid (DATEV) or, when a Leitweg-ID is present, as
XRechnung 3.0 for B2G. Both are externally validated as ACCEPTED (0 errors) and
PDF/A-3B COMPLIANT against the ProcessWeb eInvoice service.

- ERechnungMapper: FdsInvoiceData -> EN 16931 model. Seller master data now from
  Fuchs:ERechnung:Seller config (VAT id BT-31, Steuernummer BT-32, optional
  Handelsregister BT-30, IBAN/BIC, contact). Adds payment terms BT-20/BT-9
  (BR-CO-25), buyer VAT id, §13b reverse charge, and the service date/period
  (BT-72 / BG-14) parsed from ProvisionPeriod (BR-DE-TMP-32). B2G -> XRechnung
  profile with the required electronic addresses/contact.
- ERechnungValidator: client for POST /validatepdf (EN 16931 XML + PDF/A-3 in
  one call). A pure "scenario not matched" with zero errors is not treated as a
  hard failure; real errors optionally withhold the hybrid (FailOnError).
- ERechnungSettings: seller + validation config; wired in Program.cs; ServiceUrl
  in appsettings.
- Online editor: structured German-only dialogs for the recipient address
  (incl. Leitweg-ID) and the service date/period (single date or range).
- Bumps the eRechnungLib submodule to the CII rsm-namespace / PDF-A subtype fix.

Fuchs.Tests 514/514, eRechnungLib 97/97.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Stefan
2026-07-21 00:05:24 +02:00
co-authored by Claude Opus 4.8
parent d94974ce06
commit 00e72c96d4
19 changed files with 847 additions and 80 deletions
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Fuchs/Docs/INVOICE_LIFECYCLE.md
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@@ -95,7 +95,9 @@ payload; see `EVAL_live_invoice_editing.md` for the rationale.
is edited via a **structured dialog** (`$inv.eAddress`: name, street, PLZ, city,
country, optional VAT id) prefilled from `fds__prepInvoice`'s `invoiceaddressData`;
it drives the EN 16931 eRechnung and composes the free-text `SendToAddress` for the
PDF (see [`Concepts/erechnung-output.md`](Concepts/erechnung-output.md)).
PDF (see [`Concepts/erechnung-output.md`](Concepts/erechnung-output.md)). The **service
date/period** (Leistungsdatum/-zeitraum) is likewise a structured German-date dialog
(`$inv.eProvisionPeriod`) — a single date or a from/to range — mapped to BT-72 / BG-14.
- **§13b reverse-charge** toggle (`$inv.sp13b`) — suppresses VAT lines/columns.
- **Set-pricing display mode** (`$inv.ssetmode` / `setSetmode`) — `SetPrice`
(default) / `SetOnly`; see `INVOICE_SET_PRICING.md`. Purely presentational