feat: interrupt canceled codex app-server turns

src/app/api/v1/master-agent/tasks/[taskId]/control-state/route.ts

@@ -0,0 +1,29 @@
+import { NextRequest } from "next/server";
+import { authorizeDeviceWriteRequest } from "@/lib/boss-device-auth";
+import { getMasterAgentTask } from "@/lib/boss-data";
+import { jsonNoStore } from "@/lib/api-response";
+
+export async function GET(
+  request: NextRequest,
+  context: { params: Promise<{ taskId: string }> },
+) {
+  const { taskId } = await context.params;
+  const task = await getMasterAgentTask(taskId);
+  if (!task) {
+    return jsonNoStore({ ok: false, message: "MASTER_AGENT_TASK_NOT_FOUND" }, { status: 404 });
+  }
+
+  const auth = await authorizeDeviceWriteRequest(request, task.deviceId);
+  if (!auth.ok) {
+    return jsonNoStore({ ok: false, message: "FORBIDDEN" }, { status: 403 });
+  }
+
+  return jsonNoStore({
+    ok: true,
+    taskId: task.taskId,
+    status: task.status,
+    canceled: task.status === "canceled",
+    cancelReason: task.cancelReason,
+    canceledAt: task.canceledAt,
+  });
+}