Apply a jq-style filter to JSON — the JSON swiss-army knife. Supports identity, fields, index/slice/iterate, pipe |, comma, //, and/or/not, arithmetic, comparisons, array/object construction and builtins (select, map, keys, length, add, sort_by, group_by, unique, to_entries, has, range…). A SAFE pure-JS subset (no eval, bounded): no variables, def, reduce, regex or assignment. Returns the whole jq output stream as results[].