Tests your current browser/IP/session against Google's v3 scorer. The label
lets you tag each test (e.g. Nord Manchester, incognito, signed out)
so the log view stays comparable later.
Score scale: 0.0 = bot · 1.0 = human. Most sites threshold at
0.5–0.7. cyberbee.dev appears to threshold higher than 0.5 based on the
visible-block message it gives.