Response Format

All endpoints return a unified wrapper format:

Success response:

{
    "code": 0,
    "message": "success",
    "data": { ... }
}

Paginated data response:

{
    "code": 0,
    "message": "success",
    "data": {
        "list": [ ... ],
        "page": 1,
        "page_size": 20,
        "total": 542
    }
}

Time-series data response:

{
    "code": 0,
    "message": "success",
    "data": [
        { ... }
    ]
}

Single object response:

{
    "code": 0,
    "message": "success",
    "data": { ... }
}

Empty data response:

{
    "code": 0,
    "message": "success",
    "data": null
}