nx_edge_refusal_gate.nx

nx_edge_refusal_gate.nx -- the REFEREE for nx_edge_refusal_lib, and the guard that debt row EC32 named as owed the moment its fix shipped. The 503 change went live on 2026-09-03 and witnessed itself on a real write within minutes, but a witness that HAPPENED TO OCCUR is not a control: it proves the branch can fire, never that it fires on exactly the right inputs and no others. These teeth pin both directions. WHY THIS IS AN IN-PROCESS GATE AND NOT A SOCKET FIXTURE. Proving the branch end to end needs a backend that ACCEPTS a request and then stays silent for the whole edge window -- a fixture that is slow by construction and that shares the front door every seat calls through. Extracting the decision into a lib made it testable in microseconds with no socket and no shared surface, which is why the extraction came first. The residual is stated rather than hidden: these teeth prove the DECISION, not the WIRING. The wiring is evidenced separately by nx_contentdiff showing both emitted strings present in the live binary. license_tier: ORIGINAL. Reads nothing, writes only stdout. No hw writes (Rule 26).