Clean up private bytes when the fetch is cancelled, and name the wallet in the resume commandThe cleanup only covered the phase, so cancelling during the download leftthe archive and its private marker on disk with nothing to sweep them.The resume command printed after a failed upload left out the wallet thatsigned the commitment, so a miner on a non-default wallet retried as someoneelse and got a 403. It now carries the wallet, the backend when it is not thedefault, and quotes the artifact path.