fix: preserve gateway presence instanceId

src/infra/agent-events.test.ts

@@ -35,4 +35,24 @@ describe("agent-events sequencing", () => {
     expect(seen["run-1"]).toEqual([1, 2, 3]);
     expect(seen["run-2"]).toEqual([1]);
   });
+
+  test("preserves compaction ordering on the event bus", async () => {
+    const phases: Array<string> = [];
+    const stop = onAgentEvent((evt) => {
+      if (evt.runId !== "run-1") return;
+      if (evt.stream !== "compaction") return;
+      if (typeof evt.data?.phase === "string") phases.push(evt.data.phase);
+    });
+
+    emitAgentEvent({ runId: "run-1", stream: "compaction", data: { phase: "start" } });
+    emitAgentEvent({
+      runId: "run-1",
+      stream: "compaction",
+      data: { phase: "end", willRetry: false },
+    });
+
+    stop();
+
+    expect(phases).toEqual(["start", "end"]);
+  });
 });