Fix over-strong 'no token loops' claim: 40-sample sweep (seeds 0-4) found 1 hard loop (seed 4, loop_frac 1.0) + several elevated-loop samples. Card now says 'occasional/rare token loops' instead of 'no token loops'. All other numbers (val 3.8943, ppl 49.12, ~308M tok) re-verified and unchanged. (
#13)