Sets (mfr__items Type='set') can be shown three ways on the invoice:
- SetPrice (default): set line priced, member items shown without price
- ItemPrices: member items priced, set line as a heading without price
- SetOnly: only the set line (priced), members removed
- InvoiceSetPricing (new): the authoritative, unit-tested transformation
(SetDisplayMode + Build) that both sides agree on; set price always equals the
sum of members. Mode is read from InvoiceOptions ("setmode:<mode>").
- FuchsPdf.ApplyInvoice renders through it: lines flagged ShowPrice=false print
blank price/total cells; set headers are emphasised. Invoices without sets are
unchanged. Totals come from the registration balance, so modes are purely
presentational and never change the sum.
- InvoiceSetPricingTests (+14): all three modes, set-price = member sum, header
total fallback, no-set pass-through, option parsing.
- Docs/INVOICE_SET_PRICING.md documents the front-end contract (the editor sets
the mode token + tags set header/member items); the back-end does the rest.
Front-end editor wiring is specified in the doc but intentionally not shipped
blind (cannot validate the running editor here).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Stefan
c358fdbdb2