
Extended evidence package for the K2-18 b DMS biosignature review. Includes novel DMS analysis JSON, false-positive simulation, multi-messenger theory framework, arXiv literature survey, NASA archive data, Bayesian Z-score analysis, and SHA-256 evidence ledger. DMS signal classified TENTATIVE (Z~3.5, single band) under QRCL-MMF framework — dual-band MIRI LRS confirmation required before any claim.
