universal-netlist (IntelligentElectron)ECADConfidence: Medium
Follow-up to #272 from the last sweep: export now refuses a missing or unknown variant and writes metadata.designVariant, so downstream tools can tell which build a file is.
From the Grok pain-radar digests, Oct 28-29 2026 (Oct 28 8:41 AM ET through Oct 29 early-morning Haitch editions). Verified live 2026-10-29: issue/PR read; title and state confirmed.