nx_qc_svc.nx

nx_qc_svc.nx -- QUALITY-CONTROL / ANALYTICAL SERVICE FACADE. The third organ on the nx_service base, over the analytical-chemistry domain: screen an observed LC-MS peak against the peptide-adulterant catalog across charge states, report a compound's detectability, and verify a label-claim dose. WHY THIS IS PRODUCTION INFRASTRUCTURE, NOT A DEMO. 21 CFR 111 -- the dietary-supplement cGMP rule the operator must satisfy before a fill run -- requires 100% identity testing of every incoming dietary ingredient and finished-product testing against specification. This facade is the compute behind that: given a peak an instrument actually reports, it says which prohibited peptide it is (across the charge ladder a [M+H]+-only method misses), and given a measured amount it says whether the label is honest. Three facades now share one nx_service base across three unrelated domains (go-to-market, lab science, analytical QC) -- the architecture scales. USAGE: nx_qc_svc <verb> [args...] describe screen <observed_mz_q4> <tol_ppm_q1> (which prohibited peptide is this peak?) detect <entry_id> (mass, charge ladder, blind-spot flag) label <measured_ug> <declared_ug> (USP dose recovery + verdict) Same discipline: NO new domain logic, every number from a gated library. genealogy_id: supplement_adulterant_arc + service_infrastructure