it("marks gateway close before awaiting gateway_stop hooks", () => {

const serverImpl = readSource("src/gateway/server.impl.ts");

const closeStart = serverImpl.indexOf("close: async (opts)");

const closeStart = /close:\s*async\s*\([^)]*\)\s*=>/u.exec(serverImpl)?.index ?? -1;

const hookStart = serverImpl.indexOf("runGlobalGatewayStopSafely", closeStart);

const markStart = serverImpl.indexOf("markClosePreludeStarted();", closeStart);

const markHelperStart = serverImpl.indexOf("const markClosePreludeStarted = () => {");