Hojun-Cho
e8ef1e061c
Reject helpers checked only rc!=0, so a SEGFAULT (exit 139, or the driver's "w6c failed" exit 1) counted as a clean reject -- a wwstage crash could pass vacuously (it did, latently, on bodied bare-... pre #11). Every reject row now captures stderr and requires the actual diagnostic substring (rc!=0 AND strstr) across all 16 reject tests; a crash emits no diagnostic, so it now fails. This is the differential-reject backstop (#15): both stages must cleanly reject with the expected message. Two genuine cstage/wwstage diagnostic-body divergences are documented inline via per-stage substrings, not papered over (845 tuple parse, catA_f2 tuple arity); catalogued in #21.