Computing the torrent info-hash (and the content-hash fallback) reads the entire
file before the upload starts and before any progress is emitted, so on
multi-GB videos there was a long silent pause that looked like a freeze. Both
upload services now emit an 'Analyzing video…' status when a full-file hash is
required (i.e. no valid info-hash was pre-supplied). Cloudflare-upload audit #2.
Test: tests/services/s3-upload-analyzing-status.test.mjs.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
