The 2026-10-08 ask: open an account without four screens — cliente,
propiedad, servicios and the saldo inicial, taken as the first payment.
POST /customers/onboard writes it all in one Prisma transaction; a bad
service or a taken folder number leaves nothing behind (rolled back on dev).
A cash opening balance goes through the EFE receipt book inside that same
transaction, so it gets its folio and its C<folio> credit; a check posts a
CHECK DEPOSIT against the number given. /clientes/alta pre-fills the next
free folder number and links the receipt for printing. The old
customer-only form stays as "Solo cliente".
Built without the screen sketch from the meeting (it never arrived); the
fields are the legacy ones.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>