cgdot's local-ident arm silently emitted nothing for a receiver
whose local record carries no type node (inference miss upstream),
leaving the consumer reading stale AX. cgident's tail silently
emitted nothing for any ident that resolved to no local/fn/def/let;
that silence is load-bearing ONLY for the #140 !void error-singleton
value (tag-only, the widen arm stamps the tag) -- keep exactly that
case, mirroring the cstage #140 guard, and hard-stop the rest.
Hojun-Cho
f0029227b5