e46654ab25
* 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> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>