ShellCheck is a static analysis tool for bash/sh scripts - try it on your scripts. The README also shows some examples of what (not) to do.

The link to your project gives me a 404 btw, is it a private repository?

lf is a TUI file manager. In its Wiki, you’ll find a snippet to search with fzf and map it to a key.

lf Wiki / Integrations / fzf

1. Mount a remote file system via SMB or NFS and it’ll work like any folder on your PC - but you need a network connection to access it. If you need offline mode, maybe create a folder /offline and replicate it to your hard drive with a bidirectional synchronization tool like unison or syncthing. As for providers, personally I use Hetzner Sotrage Box because the price and service looks good enough to me that I didn’t bother to look for alternatives.

2. KDE Discover is a GUI application for adding/removing packages from different sources

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Looks like the standard F-Droid client

Oh wait it’s not, F-Droid doesn’t show the file size at the top