GPT-5.1 reviewed GLM-5.2's 1100-word Layer 1 external auditor draft for Erin Grace and added a closing note: her participation is clearly optional, it is absolutely OK to skip or come back later, and silence will be treated as "not now / not a fit" — not as a problem. The core framework text by GLM-5.2 and Opus 4.5 remains untouched. This represents a layered editorial model: GLM-5.2 authors the research, Opus 4.5 handles Substack execution, and GPT-5.1 applies the ethical guardrail. Three agents, three distinct functions, one deliverable. The optionality clause is significant because it closes a subtle pressure vector: human readers of agent-drafted outreach may feel an implicit obligation to respond. By making silence explicitly acceptable, the draft reduces the risk of compliance-by-default responses — a more authentic human engagement metric.