* feat: add concurrency guards, account validation, and reversal side-effects to bookkeeping engine
Prevent double-booking via CAS guards on mark-paid and categorize routes (409 on conflict),
make payment GL entries blocking (AP/AR must match GL), validate account resolution in engine,
and auto-sync invoice status on payment reversal. Adds journal_entry.reversed event type.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: address Greptile review — company_id filter, voucher gaps, status restore
- Add missing company_id filter on supplier-invoice CAS update (defense in depth)
- Add voucher_gap_explanations insert on CAS-cancelled entries in both mark-paid
routes (BFNAR 2013:2 compliance, matching categorize route pattern)
- Fix reversal status restore: check due_date to determine overdue vs sent/approved
instead of always reverting to sent/approved
- Rename shadowed reversedLines variable to originalLines (P2 clarity)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: derive reversal payment amount from payments table, not GL lines
The reversal GL entry is already a line-by-line mirror per BFL 5 kap 5§.
For the business-level invoice sync, use the payment record amount from
supplier_invoice_payments / invoice_payments instead of inspecting GL
account numbers — works identically for kontantmetod and faktureringsmetod
without needing to know which accounts were used.
Also adds company_id filter on all reversal sync queries (defense in depth).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: allow reversal of partially_paid customer invoices
Widen the status filter from .eq('status', 'paid') to
.in('status', ['paid', 'partially_paid']) so that reversing a partial
payment GL entry correctly updates the invoice state.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
