Jian Lin — MDIT-CS Patch

This patch upgrades the Mutual-Dependence Immunity principle (MDIT) into an au- ditable, computable cut-set semantics over a dependency preorder (thin-category form). The construction introduces (i) a policy-committed directed dependency graph, (ii) a min-cut invariant κ(·) encoding externality-connectivity cost from designated source set(s), (iii) an earliest-failure gate sequence for detecting closure-by-control attempts, and (iv) a deter- ministic Merkle-leaf schema under PERIMETER_AUX for ingestion by CDCT / terminal certificates. The patch is non-expansive: it reads but does not modify CORE/OPA/G- τ .4/TELOMERE artifacts.