更新咏唱引擎智能体定义

POST /v1/agents/{agent_id}

curl -X POST https://agent.ariacompute.cn/v1/agents/agent_01a2b3c4d5e6f7890abc \
  -H "Authorization: Bearer $ARIA_AGENT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"instructions": "You are a triage agent. Prefer concise answers."}'