Add two nullable, additive columns to `Medication` (`atc_code`,
`rxnorm_code`) so a user or clinician can assert a drug-classification
code that the health-record FHIR export emits on the medication concept.
Codes are taken verbatim, never machine-guessed: a wrong code is a
clinical-safety problem, an absent one is merely a (conformant)
text-only concept.
- Migration 0103 — additive, nullable, no backfill. Pre-existing rows
read NULL, which the exporter already treats as "no code".
- Validate on write — ATC `^[A-Z]\d{2}[A-Z]{2}\d{2}$`, RxCUI `^\d+$`;
422 on a malformed value. Wired field-by-field through the create +
update routes (no mass assignment); `null` clears a code on update.
- Surface both codes in the medication advanced-settings sheet's Data
group with a self-saving input, and echo them on the GET/POST/PUT
response shape. OpenAPI regenerated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
(cherry picked from commit 2e0051d42826fa3f043c32e78a34dab7c8050165)
Marc-André Bombeck
0a8c6e307c