- Add Conceptos tab in CFDI page with column filters, sorting, pagination
- Add GET /cfdi/conceptos endpoint with filters and orderBy
- Backfill cfdi_conceptos from legacy XMLs (824k concepts inserted)
- Fix CFDI delete button (bypass subscription check, add alerts)
- Fix export to Excel (fetch all filtered results, limit 10k)
- Fix facturacion page concepto delete bug (immutable updates, unique ids)
- Add Facturapi live key auto-generation and caching
- Fix SAT fechaPagoP parsing
- Add metrics cache support for current year
- Increase DB pool max to 15
