The Floor bar used a file-count poller that jumps 0→~99% for small/fast albums
(streamrip reports only 0/1). But yt-dlp and slskd already emit real byte-level
progress via the on_progress callback the pipeline was discarding
(lambda _pct: None).
- Thread a throttled on_progress → Job.downloadProgress (write on a >=1% move or
every 0.5s; clamped 0..1; write failures swallowed). Called synchronously from
adapter.download on the pipeline thread, so it reuses the main conn safely.
- The file-count poller stays as the FALLBACK: it skips writing while a
`reports` flag is set (an adapter is driving real progress), and the flag is
cleared per attempt so a fall-through to streamrip still gets the estimate.
- Smooth bars for YouTube + Soulseek now; Qobuz/streamrip keeps the file-count
estimate until its per-track callback is hooked later.
worker 216 tests / 7-skip (on_progress write/throttle/clamp covered; existing
pipeline tests now exercise the fake's on_progress end-to-end).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jonathan
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