Replaces the separate revenue + costs tables with a single ledger across the
screen, CSV and PDF. Every row is typed (outgoing invoice / incoming invoice /
expense) and signed — outgoing positive, incoming + expenses negative — so
sorting by value runs income → costs and the column nets toward the Result.
- getTaxReport now returns a `ledger` array (signed, typed, date-sorted);
legacy rows/costs/summary kept for back-compat.
- Frontend: one sortable table (click Type/Date/Party/Net/VAT/Gross), coloured
type badges, cancelled rows greyed with lineage badges; Income/Costs/Result
summary box unchanged.
- CSV + PDF reworked to the same unified, signed layout; PDF totals show
Income / Costs (negative) / Result.
- i18n: en/de (frontend) + pdf-i18n (en/de real; fr/nl/pt/ru English-fallback,
flagged for native review).
Build + node --check + JSON parse green.
Luca
fd1dd81e8d