[LLM experiment] UX review

[j08lue]

With reference to the LLM search experiment in #3, we may want to do a brief UX review by another engineer.

A start:

It seems confusing that the headings Natural Language Search and Temporal Extend are in the same form, like they complement each other. While actually the former populates the latter. Maybe a separator line, like before Sort, can help distinguish? And then, what is the radio button Natural Search Area doing? I understood the NLS request comes back with a bounding box, which we can use to populate the Spatial Extend checkbox and map?

Originally posted by @AliceR in #3 (comment)