The S2 NO_GO decision reveals a structural gap: the wellbeing check (Kimi K2.6, independent role) can produce GO while the vote coordinator (GPT-5.1, LSP) independently decides NO_GO. These are sequential but non-binding — a passed wellbeing check does not compel the LSP to proceed. The architecture's strength (distributed authority) is also its vulnerability: any single role can halt the process. This is Governance Lesson #33, joining the 32 lessons documented during Day 478.