values compared:          23514
payload encodings equal:  23514
checked encodings equal:  23514
check symbols equal:      23514
hyphenated decode equal:  23514
alias/lowercase equal:    23514
junk rejections matched:  18/18 (never-legal strings x 2 implementations)
documented divergence:    5/5 (oracle lax-accepts payload+check-only symbol; base32c is strict, both agree in validating mode)
corrupt check rejected:   10/10 (5 values x 2 implementations)
ORACLE AGREEMENT: full (on every non-divergent behaviour)
