v2.13.0 - Wormhole large-sample (n=100) ensemble sign check (Experiment 11)

Large-sample version of Experiment 10's check, matching arXiv:2604.10090's own reported ensemble size. Result: 49/100 (49%) of exact 34/11-selection-matched instances are wrong-signed at the paper's own default parameters -- far stronger than Experiment 10's 2/6, essentially a coin flip, not a generic feature of the ensemble. Two candidate structural explanations (Majorana mode-usage imbalance, spectral level-spacing chaos statistic) tested for correlation -- neither holds up at this sample size (an earlier n=6 look had suggested mode-usage imbalance correlated strongly, r=0.87 -- that does not replicate at n=100, r=0.171, p=0.09). See README Section 21 / docs/wormhole_syk_teleportation.md.