c Hardening Pack v0.1

Public research and technical hardening package for the c = a + b corpus. The package connects class claims to evidence, runtime surfaces, test matrices, L4 runtime enforcement, memory continuity, semantic drift control, long-horizon witness anchoring, human-anchor drift handling, and 90-day continuity evidence planning. It is not an implementation-ready package, not a deployment package, not product certification, and does not grant commercial implementation rights.