- compare/core: EXACT/NEAR/DISCREPANCY/UNKNOWN with the plan §16.3 tolerances (abs, float32 ULP), NaN = NaN, locus classes (assay, variant type, chromosome group, intensity-only); fields absent on both sides are not applicable - compare/records: GTC vs GTC (per-locus arrays, transforms per bin, controls, sample statistics; metadata listed, not counted) and VCF vs VCF (records keyed incl. ID; SNV/MNV/indel, merged, multi-allelic classes) - simurg compare A B (files or folders paired by name): summary.json, discrepancies.tsv.gz (never truncated), self-contained dashboard.html; --tolerance, --fail-on-discrepancy (exit 3) - scripts/nightly.py + install_nightly.sh (crontab 02:30): unit tests, GSA vs gtc2vcf (GTC + VCF), VCF regression vs golden, Omni2.5 subset vs vendor GTCs; first run PASS on every step - tests/unit/test_compare.py; docs/validation/P7.md, README Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01814GKVzZVL3FuF3DeiZXhv