for await (const e of userClient.chat.stream(agent._id, {  messages: [{ role: 'user', content: 'What internships are open?' }],  threadId: thread._id,  // contextOverride: 'Live page context appended to system prompt for this turn only (≤4000 chars)',  // context: { userTier: 'pro' }, // never shown to model, only RCP resolver reads it (≤2000 bytes)})) {  if (e.type === 'TEXT_MESSAGE_CHUNK' && e.delta) process.stdout.write(e.delta);  if (e.type === 'CUSTOM' && e.name === 'hitl_request') {    // show approval UI  }  if (e.type === 'RUN_ERROR') {    console.error(e.code, e.message);  }}

const result = await userClient.chat.sendMessage(agent._id, {  messages: [{ role: 'user', content: 'Hi' }],  threadId: thread._id,});console.log(result.text);if (result.interrupt?.kind === 'hitl') {  await userClient.chat.sendMessage(agent._id, {    messages: [],    resume: { decisions: [{ action: 'delete_agent', decision: 'approve' }] },    threadId: thread._id,  });}