latest image: Dashboard sends removed result_mode field and POST /v1/jobs returns 400

[Leo-Lionni]

关键证据：
Image digest:
sha256:66551263460925a7a5ba7a2cb4d7f907db8b4277cb79a0c2d2592d06728d9319
Request:
POST /api/v1/jobs
Payload:
{
"source_type": "file",
"file_name": "adfm.202011073.pdf",
"result_mode": "auto"
}
Response/log:
400 Bad Request
Unsupported job-create fields

强制刷新和无痕窗口仍可复现， API schema 已不包含 result_mode。
盲猜是： 前后端版本接口不对应。