fix: improve downloads (prefer yt-dlp), flexible deps, and update msg

[makise-ui]

Pull Request Template

Type of change

• Bug fix
• Feature
• Documentation update

Description

This PR improves the robustness of the download functionality by preferring yt-dlp for both m3u8 and direct mp4 links. It also relaxes the dependency checks so that ani-cli doesn't fail if aria2c is missing but yt-dlp is present. Finally, it improves the error message when self-update fails.

Checklist

• any anime playing
• bumped version

---

• next, prev and replay work
• -c history and continue work
• -d downloads work
• -s syncplay works
• -q quality works
• -v vlc works
• -e (select episode aka -r range selection) works
• -S select index works
• --skip ani-skip works
• --skip-title ani-skip title argument works
• --no-detach no detach works
• --exit-after-play auto exit after playing works
• --nextep-countdown countdown to next ep works
• --dub and regular (sub) mode both work
• all providers return links (not necessarily on a single anime, use debug mode to confirm)

---

• -h help info is up to date
• Readme is up to date
• Man page is up to date

[port19x]

Can you elaborate how yt-dlp is actually better than the current solution?

[makise-ui]

The main reason is that yt-dlp is already used in the script for m3u8 downloads, so it makes sense to also use it for direct mp4 links. This way users only need yt-dlp installed instead of both yt-dlp and aria2c. It also has better retry/error handling built in. aria2c is still kept as a fallback nothing breaks if someone doesn't have yt-dlp

[port19x]

x

[port19x]

Current behaviour

Your PR

[Derisis13]

Current behaviour Your PR

Yeah, Yt-dlp can be very volatile. Plus it straight up refuses to download from some piracy-centered video sharing platforms to avoid piracy accusations