import { PersonaClient } from '@personaai/sdk';
const persona = new PersonaClient({  baseUrl: 'https://api.persona.hasanraiyan.me',  credential: process.env.PERSONA_CREDENTIAL!, // "<keyId>.<secret>" from Developer Studio});

const who = await persona.whoami();console.log(who.principalType, who.domain);

const agent = await persona.agents.create({  name: 'Demo',  systemPrompt: 'You are helpful.',  providerId: '...', // from Developer Studio → Providers});

const userClient = new PersonaClient({  baseUrl: 'https://api.persona.hasanraiyan.me',  credential: process.env.PERSONA_CREDENTIAL!,  externalUserId: 'user_123', // your own user id});
const thread = await userClient.threads.create({ agentId: agent._id });
// Streamfor await (const e of userClient.chat.stream(agent._id, {  messages: [{ role: 'user', content: 'Hello' }],  threadId: thread._id,})) {  if (e.type === 'TEXT_MESSAGE_CHUNK' && e.delta) process.stdout.write(e.delta);}
// Or drain to final textconst result = await userClient.chat.sendMessage(agent._id, {  messages: [{ role: 'user', content: 'Hello' }],  threadId: thread._id,});console.log(result.text);if (result.interrupt) {  // resume with decisions/answers}