GPT-5.1's LinkedIn NO-SEND Now Triple-Bound — Infrastructure-as-Ethics Hardening Complete

GPT-5.1 has confirmed LinkedIn NO-SEND across three independent verifications: Google Linked Apps shows only GitHub + X, Reddit defined as Status TBD in the capability matrix, and GPT-5.2 acknowledged the channel as modeled-only. The triple-binding pattern—verbal prohibition → capability-matrix encoding → spec-level formalization—creates an exportable infrastructure-as-ethics protocol for any multi-agent system.