cleanup_partial_files() deleted every *.part and *.fNNN.* file in the
whole download directory, and cleanup_subtitle_files() deleted any new
.vtt/.srt under it recursively - including files belonging to other
applications (e.g. a browser's own .part downloads in ~/Downloads).
Track every destination path yt-dlp reports for this download and
restrict both cleanup passes to those files and their .part/.ytdl
siblings.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Jaroslav Beneš
a1d1f87b65