When _try_direct_stream() succeeded, it streamed chunks directly via
requests.get() without firing any progress events. This caused the WebSocket
frontend to only see 'started' (0%) and 'completed' (100%) — no incremental
updates.
Add per-chunk progress events to _try_direct_stream that mirror yt-dlp's
hook format (downloaded_bytes, total_bytes, speed, eta, status), emitted at
~1% intervals. These flow through the existing download_progress handler chain
(SeriesApp → anime_service → progress_service → WebSocket → frontend).
Lukas
270da18543