Add an (unassigned)/(no crate) entry under the crates to find tracks that have not yet been assigned to a crate

[robbert-vdh]

Feature Description

I searched through the issues and couldn't find one matching this same feature in the first couple pages, but I didn't scroll through all 311 issues mentioning crates so maybe this is a duplicate!

I think it would be useful to have an item in the crates subtree of the library to that lists all tracks that do not yet have a crate assigned to them. It can be easy to forget to categorize tracks when importing new ones and finding those tracks afterwards can be a real chore. I guess this functionality already exists by searching for crate:"", but that's not very discoverable and I didn't even realize you could do that until I was typing this feature request heh. If anyone thinks this is useful I can submit a PR. Otherwise I guess I now know that I can get most of this functionality by searching for crate:"" from time to time.

[daschuer]

I can aknowlege that such an entry will be a good solutions for users where every track is in a crate.
This is however not my use case and this crate will be empty during performace for users that follow this use case.

How about fixing this issue with a search composer or such?

[Eve00000]

I would like to invite you all to test PR #14182 "Smarties (or SmartList or SmartCrate or QueryCrate or QueryList or ...) open for feedback."
I 'm realy keen on feedback.

You can create a condition "not in <name of crate / playlist / history>", at the moment you should create a combined crate (tracks of all crates) and execute the condition. I'll add conditions 'not in all crates' / 'not in all playlists' / 'not in all historylists'

Addendum:
I Added (2025/02/01, it wasn't that difficult) :
"track" - "is a member of"/"is not a member of" - "all playlists"/"all crates"/"all historylists"