- dolibarr-sandbox-write/scripts/creditnote-create.sh: create a customer avoir
(credit note) — a customer invoice type=2 referencing source_invoice
(fk_facture_source); amounts negative, validates to an AVC… ref. Proven live.
- bin/arcodange: new `sandbox` command group wiring the write scripts —
`arcodange sandbox {thirdparty|invoice|payment|creditnote|write}` (JSON on
stdin). Header + usage updated to note the CLI now does host-guarded sandbox
writes (still read-only on prod).
- SKILL.md: avoir workflow + CLI notes.
Verified end-to-end through the CLI: thirdparty -> invoice (FAC…) -> avoir
(AVC…, total_ttc -240, fk_facture_source set); host-guard intact via the CLI.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
