FreeFlix CLI v1.6.3

⬇️ Real-time download progress (fix)

• HLS now downloads with yt-dlp's native parallel-fragment downloader
  (--concurrent-fragments 16) instead of aria2c. With aria2c, yt-dlp only
  reported overall progress at the very end, so the bar sat on "starting…" then
  jumped to 100%. Native reports (frag a/b) continuously, so the bar now
  climbs live from the moment the download starts.
• Just as fast for HLS (16 fragments in parallel saturate the link) and still
  leaves the Downloads folder clean (fragments go to a temp dir, deleted after).
• aria2c is still used for direct .mp4 (real-time single-file % + speed).