Test: the SIGTERM drain check ends its held body after the drain has begun (it raced the signal on CI) (#91)

ddiff --git a/test/service-kit.test.js b/test/service-kit.test.js
iindex 26e09a1..c98a279 100644
---- a/test/service-kit.test.js
++++ b/test/service-kit.test.js
@@@ -101,6 +101,12 @@ const freePort = () => new Promise((resolve) => { const s = net.createServer();
              await new Promise((r) => setTimeout(r, 300));
              const exited = once(child, 'exit');
              child.kill('SIGTERM');
++            // End the body only once the drain has begun: ended at once, the request could be answered before the signal
++            // was handled, without Connection: close (CI, 2026-10-24, Trade#90). The kit logs the stop, runs its stop
++            // steps, then marks every response in flight (openvibe-sdk service/graceful.js drain()), so: the log, then a
++            // moment for those steps.
++            for (let i = 0; i < 250 && !/\[Trade\] SIGTERM: stopping/.test(log); i++) await new Promise((r) => setTimeout(r, 20));
++            await new Promise((r) => setTimeout(r, 250));
              held.end('&name=Held');
  
              const res = await inFlight;