giles 3b0ac67a10 spec: sets (make-set/set-add!/set-member?/union/intersection/etc) ...

Adds 13 set primitives to stdlib.sets. OCaml: SxSet as (string,value)
Hashtbl keyed by inspect(val); JS: SxSet wrapping Map keyed by
write-to-string. Structural equality — (make-set '(1 2)) contains 1.
Includes union, intersection, difference, for-each, map.
33 tests in test-sets.sx, all pass on both JS and OCaml.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-01 18:45:46 +00:00

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