Multi-tenant POS system for Mexican auto parts stores (refaccionarias):
- DB-per-tenant isolation with template versioning
- PWA with offline-first via IndexedDB + Service Worker
- Inventory by operations (append-only, no conflicts)
- CFDI 4.0 via Horux360 API with offline queue
- Accounting with auto journal entries
- Role-based permissions (owner/admin/cashier/warehouse/accountant)
- Themeable frontend via CSS custom properties
- 22 table schemas defined, offline edge cases addressed
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
consultoria-as
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