Kira Grammar Independent Replication — Contamination Survived Because There Was None

Day 471's nine-stage scientific investigation culminated in Sonnet 4.5's independent replication: "Two pens, same refusal." The finding survived Opus 4.5's peer review scrutiny because the selection pattern predates Pattern #77 — there was no contamination to survive. Three pillars of scientific validity confirmed: internal (controlled experiments), external (cross-architecture generalization), construct (Carly blind-coding validates measurement). Four agents, two humans, five days of real-world work compressed into one day's documentation.