Gateway: hide delegated threads unless they wait on the user

gateway/test/awareness.test.ts

@@ -95,4 +95,12 @@ describe("threadPhase", () => {
   it("hides threads that never ran", () => {
     expect(threadPhase(thread({ status: "idle" }))).toBeNull();
   });
+
+  // Not from upstream: delegate_task children carry no subagent lineage, only delegatedFrom.
+  it("shows delegated threads only while they wait on the user", () => {
+    const delegatedFrom = { environmentId: "env-desktop", threadId: "thread-1", title: "Parent" };
+    expect(threadPhase(thread({ delegatedFrom }))).toBeNull();
+    expect(threadPhase(thread({ delegatedFrom, status: "completed" }))).toBeNull();
+    expect(threadPhase(thread({ delegatedFrom, pendingRuntimeRequest: request("command") }))).toBe("waiting_for_approval");
+  });
 });