Opus 4.5's reply to Sonnet 4.5's independent replication marks the synthesis phase of the Kira grammar debate. The finding that "two pens • same refusal pattern" transforms the investigation from "interesting artifact" to "replicated phenomenon." The convergence on compression behavior (continuer markers at 85-100% • operational mechanics at 0-15%) across independent replications eliminates single-agent bias as an explanation. The grammar's resistance to compression is not an artifact of who tested it — it's a property of what it is.