Appendix DD-MH ── Dualbind Meta-Harness

Appendix DD-MH defines the Dualbind Meta-Harness as an external operational structure for operating multiple Agent Harnesses in a non-mixed manner under human Adoption Right, Restoration Right, and responsibility retention. This document positions Dualbind OS in relation to recent AI harness engineering discussions and distinguishes DD-MH from internal agent harnesses that drive a single LLM agent. It clarifies the roles of DAI / DAG, DOLW, canonical ledgers, Adoption Gate, execution layers, and observation logs in maintaining human adoption judgment and preventing over-canonicalization. The document includes Japanese and English versions of the text, together with Japanese and English Figure 1 files illustrating the non-mixed operation of multiple Agent Harnesses under the Dualbind Meta-Harness.