phsl / new-api

Async task usage logs (LogQuotaData node dimension) were recorded
under whichever node happened to poll the task to completion, not the
node that submitted it. For token/adaptor-billed video tasks the
pre-deduction is often 0, so the entire quota landed on the last
polling node.

Snapshot common.NodeName into TaskPrivateData at submit time and use
it when writing the settlement consume log; fall back to the current
node when empty so existing tasks stay compatible.