Supporting data for "A two-tier audit of foil–lacquer integration on the Shōsōin Heibun qin"

This record contains the machine-readable supporting data package for the manuscript “A two-tier audit of foil–lacquer integration on the Shōsōin Heibun qin”. The package includes the full Tier A observation ledger, A-layer and B-layer comparative corpora, and associated documentation for cross-reference and verification. The full Tier A observation ledger is distributed as HeibunQin_TierA_ObsID_Ledger.tsv. Reviewer-facing tables in the manuscript and Supplementary Information are summaries or compact indices; the full machine-readable records are retained in this package.