Every `const` here is only used once for constructing the "map" I think all of these `const` should be removed, and just fill the values into the map directly.

If it wasn't already present in the original code, I'd propose dropping the `Search-` prefix in this PR. It only confuses without bringing any additional value. As it exists already, I'll see that I open another refactoring PR once this one was merged.

One potential problem with this approach: `ASc` or `ASC` results in the default sorting, even if a valid sorting is given We should probably lowercase the order first

Why not keep them here?

this will affect the explore page similar as #30784 too

extend options to let api be on pair with webui options

this make it easyer to match human keywords with api options ... but if prefered I could also use the const directly ...