log-watcher parse errors 7 -> 3 (only `as` left); corpus 71/0, woc 565/0.
- wob.h/builtin.c/loader.c: WO_B_MULTI_SET — `m[i] = v` for a multi, dropping
the element it replaces (the mirror of map_set, which the format doc's sugar
rule already had; the "no element write" gap is closed)
- ast/parser: `for k, v in m` — the second name binds the value for that key
- types.ml/owner.ml: the two cursors take the map's key and value types; both
are borrows of what the map owns, so neither is dropped per iteration
- emit.ml: map form lowers to len + key_at/val_at over slot indexes (insertion
order, cont.h's parallel arrays), same loop skeleton as the multi form
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
shoney.arickathil
ea77fc9d5c