Hojun-Cho
87367ae332
exprtype N_MATCH took the first arm's yield type without walking the rest — int-vs-str arms silently produced garbage downstream. Walk all arms: typeeq-equal accepts; a definite coarse-family mismatch (num/str/bool via the new yieldclass classifier, unknown classes stay lenient) rejects. Same-family non-assignable pairs remain lenient — the documented precision residual is task #52 (needs tinfo-level type_assignable). The wave's table-driven reject test lands here: 989_catA_f2_reject, 19 rows x 2 stages, each member pre-fix-red-proven.