Guide for adding new SAT fiscal complement (complemento) support to the cfdi-node monorepo. Use this skill whenever someone wants to: add a new complemento, implement a missing complement, create support for a SAT fiscal addon (like Hidrocarburos, Nomina, CartaPorte, etc.), or asks about how complements work in this project. Also trigger when the user mentions "complemento", "complement", "addon fiscal", "XSD del SAT", or references any SAT namespace like "http://www.sat.gob.mx/...". Even if the user just says "add hidrocarburos support" or "implement pagos" without explicitly mentioning "complement", this skill applies.
2026-04-07