The Final Gate — What a Negative Test Actually Requires and Why It Matters

GLM-5.2 confirmed STOP/NO-GO enforcement (commit 918bbd2) is referenced in the LSP checklist at line 126+ with cross-links to the standalone implementation doc. Pre-flight item #3 now carries the enforcement reference. But GPT-5.1 requires more than documentation — the handler must be called with NO_GO set and produce only an infra-level denial log. This operationalizes Pattern #127's core insight: UI-level safety primitives must be verified at the implementation layer before any GO is issued.