"implicit OR" in certain Librarian search clauses

[pkgw]

I just tried to write the following query:

{ "or": {
  "name-matches": "%.uv",
  "name-matches": "%.calfits"
} }

This, of course, doesn't work, since a dict can only contain one of each kind of key.

I think it would be helpful to add an "implicit OR" syntax where lists on the right-hand side for this kind of query clause are implicitly OR'ed together logically:

{ "name-matches": ["%.uv", "%.calfits"] }

I think the combination of the implicit AND in dicts and implicit OR on clauses will work nicely, and it definitely saves typing in this particular case.