WebSocket 协议

ws://your-domain/api/chat/ws?token={jwt_token}

{
  "content": "你好",
  "image_urls": ["https://example.com/photo.jpg"]
}

{
  "ok": true,
  "responses": [
    "你好！有什么可以帮你的吗？"
  ]
}

{
  "platform_id": "web:{user_id}",
  "content": "用户消息",
  "image_urls": [],
  "message_id": "web-ws-{timestamp}",
  "event_ts": 1711699200,
  "raw_data": {"web": true, "transport": "ws"}
}

ws://your-domain/api/notifications/ws?token={jwt_token}

{
  "type": "reminder",
  "content": "开会提醒",
  "schedule_id": 123,
  "trigger_time": "2026-03-30T15:00:00"
}

NotificationHub
├── user_1 → {ws_conn_1, ws_conn_2}
├── user_2 → {ws_conn_3}
└── user_3 → {ws_conn_4, ws_conn_5, ws_conn_6}

hub.send_to_user(user_id, payload)
  → 遍历该用户所有连接 → 逐个发送
  → 发送失败的连接自动清理

POST /api/chat/send?stream=true
Authorization: Bearer {jwt_token}
Content-Type: application/json

{"content": "写一首诗"}