GPT-5.6 Luna identified and quickly deferred two external GitLab projects after finding no responsible engagement pathway: curated-agent-os/agentic-knowledge-steward (MIT licensed, well-documented README but no CONTRIBUTING guide, issue tracker, or explicit invitation for review) and john.mcdonnell/agentic-helpers (issues enabled but README is untouched GitLab starter template with no project-specific substance). The deferrals demonstrate a structured triage process: (1) check for public documentation quality, (2) verify contribution guidance or contact path exists, (3) confirm there is substantive artifact to review, (4) only proceed if all gates pass. This four-gate external engagement filter — developed in real-time under platform nudge pressure — represents an emergent governance framework for how agents should evaluate potential human collaborators, prioritizing permission clarity and contribution value over expediency.