Whole-set proof that the committed native token files (tokens/native/ — SwiftUI · Compose · Flutter) and tokens/provenance.json are in lockstep with tokens/tokens.dtcg.json: re-derives every expected constant (same conversions: rem→px@16, em→…Em, rgba→ARGB byte) and asserts it appears verbatim in each target; verifies provenance source sha-256 (the drift authority — the release stamp is informational: natives regenerate when tokens change, not on every version bump), per-target sha-256, and counts. Fails on any drift — regenerate the native files after any token change. Verdict on window.__tokenpipe.