Gateway: show subagent requests on the parent's card, and settle threads

gateway/src/api.ts

@@ -232,7 +232,7 @@ export function createRoutes({ db, hub, cache, pusher, startedAt, log = () => {}
     "/v1/threads/:hostId/:threadId": {
       GET: authed<"/v1/threads/:hostId/:threadId">(async (req) => {
         const { host, thread } = findThread(req.params.hostId, req.params.threadId);
-        return json(await buildThreadDetail(host, thread, cache));
+        return json(await buildThreadDetail(host, thread, cache, hub.list()));
       }),
     },
 
@@ -277,6 +277,14 @@ export function createRoutes({ db, hub, cache, pusher, startedAt, log = () => {}
       }),
     },
 
+    "/v1/threads/:hostId/:threadId/settle": {
+      POST: authed<"/v1/threads/:hostId/:threadId/settle">(async (req) => {
+        const { host, thread } = findThread(req.params.hostId, req.params.threadId);
+        await host.dispatch({ type: "thread.settle", commandId: crypto.randomUUID(), threadId: thread.id });
+        return accepted();
+      }),
+    },
+
     "/v1/threads/:hostId/:threadId/stop": {
       POST: authed<"/v1/threads/:hostId/:threadId/stop">(async (req) => {
         const { host, thread } = findThread(req.params.hostId, req.params.threadId);