nx_labsci_gate.nx

nx_labsci_gate.nx -- THE MISSING EVIDENCE ORGAN for the lab-science lane. WHY THIS EXISTS: the ecosystem carries a real chemistry/biochemistry stack (nx_peptide + _ext/_msms/ _deconv/_denovo/_identify/_isotope, nx_supplement_screen, nx_thermal_process, nx_water_activity, nx_shelf_life, nx_stability, nx_stability_rh, nx_icecream) exposed through nx_labsci_svc. The lane IS gated -- 43 gates / 497 assertions -- but by `_scratch/labsci_lane_gate.sh`: a shell script, outside any deployable tree, hardcoding one laptop's absolute path (debt seq1352). So its evidence can only be produced by hand, on one machine, into the AUTHORING root -- while the maturity rollup reads the NAS root (181 logs there vs 1164 locally, debt seq1339). The domain is therefore ungradeable not for want of measurement but because the witness cannot run where the reader looks. This organ is the sovereign, deployable replacement path: it builds and runs on the NAS, so the evidence is PRODUCED where the ruler reads instead of copied there (a copied log is a stale claim). WHAT IT MEASURES: the library against PUBLISHED EXTERNAL REFERENCE VALUES, not against itself. Self-agreement is not evidence -- these are standard MS calibration peptides and established regulatory thresholds that were never inputs to our derivations: Angiotensin II DRVYIHPF monoisotopic 1045.5345 Da Bradykinin RPPGFSPFR monoisotopic 1059.5614 Da Substance P RPKPQQFFGLM free acid 1347.7121 Da HTST pasteurisation 72 C / 15 s = the legal PMO schedule pH 4.6 = the C. botulinum high-acid regulatory line Every positive has a NEGATIVE CONTROL so the gate can go RED. It writes knowledge/status/labsci_gate.log with a VERDICT= line, which is exactly the shape the ecomat evkind-2 gate-liveness deriver (el_last_green) reads -- so admitting a `lab-science` domain pointing here yields a MEASURED grade, never a stored assertion. license_tier: ORIGINAL expect_exit: 0