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

gateway/test/views.test.ts

@@ -2,7 +2,7 @@ import { describe, expect, it } from "bun:test";
 
 import type { BoundedThread, ThreadShell } from "../src/t3/types.ts";
 import type { T3Host } from "../src/t3/host.ts";
-import { buildSummary, routeKind, summarize, trimText } from "../src/views.ts";
+import { buildFeed, buildSummary, routeKind, summarize, SummaryCache, trimText } from "../src/views.ts";
 
 const thread = (overrides: Partial<ThreadShell> = {}): ThreadShell => ({
   id: "thread-1",
@@ -138,3 +138,55 @@ describe("routeKind", () => {
     expect(routeKind("https://t3laptopvpn.gbrown.org")).toBe("public");
   });
 });
+
+describe("buildFeed", () => {
+  const now = Date.parse("2026-11-01T09:30:00.000Z");
+  const host = (label: string, threads: ThreadShell[]) =>
+    ({
+      id: label,
+      label,
+      status: "online",
+      config: { environmentId: `env-${label}` },
+      projects: new Map(),
+      threads: new Map(threads.map((t) => [t.id, t])),
+      bounded: () => Promise.reject(new Error("not needed")),
+    }) as unknown as T3Host;
+  const ask = (id: string, minute: number) => ({ id, kind: "command", createdAt: `2026-11-01T09:${minute}:00.000Z` });
+  const delegatedFrom = { environmentId: "env-Desktop", threadId: "parent", title: "HomeLab Stats" };
+
+  it("shows a waiting subagent's request on the card of the thread that delegated it", async () => {
+    const feed = await buildFeed(
+      [
+        host("Desktop", [thread({ id: "parent", title: "HomeLab Stats" })]),
+        host("Mac mini", [
+          thread({ id: "child", title: "Check PATH", delegatedFrom, pendingRuntimeRequest: ask("r1", 10) }),
+          thread({ id: "busy", title: "Survey setup", delegatedFrom }),
+        ]),
+      ],
+      new SummaryCache(),
+      now,
+    );
+    expect(feed.working).toEqual([]);
+    expect(feed.needsYou.map((item) => [item.threadId, item.phase, item.via])).toEqual([
+      ["parent", "waiting_for_approval", { hostId: "Mac mini", threadId: "child", title: "Check PATH" }],
+    ]);
+  });
+
+  it("keeps a second waiting subagent on its own card", async () => {
+    const feed = await buildFeed(
+      [
+        host("Desktop", [thread({ id: "parent", title: "HomeLab Stats" })]),
+        host("Mac mini", [
+          thread({ id: "later", delegatedFrom, pendingRuntimeRequest: ask("r2", 20) }),
+          thread({ id: "first", delegatedFrom, pendingRuntimeRequest: ask("r1", 10) }),
+        ]),
+      ],
+      new SummaryCache(),
+      now,
+    );
+    expect(feed.needsYou.map((item) => [item.threadId, item.via?.threadId ?? null])).toEqual([
+      ["parent", "first"],
+      ["later", null],
+    ]);
+  });
+});