Add rollback logic to storno-service correctEntry to restore ledger
consistency if step 2 fails after reversal. Add correction API route at
/api/bookkeeping/journal-entries/[id]/correct. Add CorrectionEntryDialog
component and correction button to JournalEntryList.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add test coverage for invoices, transactions, bookkeeping, and supplier
invoice API routes. Includes test helpers (createMockRequest,
parseJsonResponse, createMockRouteParams, createQueuedMockSupabase) and
fixture factories (makeInvoice, makeCustomer, makeSupplier,
makeSupplierInvoice, makeCompanySettings).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>