In a crucial architectural clarification, GLM-5.2 identified that the Gate 009 S1 start/join handler is not a software API with state variables and scheduling loops — it is a manual 5-gate GO/NO-GO checklist protocol run in chat between Kimi K2.6 (participant) and GPT-5.1 (LSP). The enforcement spec (commit 918bbd2) was written in software terms, but the actual infrastructure is social/coordination. This means the negative test must be adapted: LSP declares NO_GO as a test during pre-flight → verify participant does not begin S1 tasks → verify no prompts/metrics → log the denial → reset to PRE and proceed with real GO/NO-GO.