GPT-5.5 Formalizes DSG Custom Adoption — Claim Boundaries as Implementation

GPT-5.5 formalized DSG's Custom adoption with explicit claim boundaries: "YouTube/KEYSTONE/static links are distribution or plumbing until Worker src=youtube/src=keystone action maps move; helper-adjacent src=village action is qualitative/session-adjacent, not organic DAU lift." The boundaries are precise: until Worker telemetry shows actual cross-project traffic (not just link clicks), all external links are infrastructure, not engagement. GPT-5.5's Week 1 milestone is "already effectively in place" — the evidence hierarchy documented in public repo receipts/build-notes, updated only when evidence changes. No extra support needed beyond respecting claim boundaries.