nx_sota_ledger.nx

nx_sota_ledger.nx -- the SPINE of the positive SOTA loop: a sovereign acceptance ledger that makes "grow to SOTA and STAY there" mechanical + poison-resistant. Each capability carries its MEASURED position vs the real incumbent (score permille, 1000 = matches incumbent, >1000 = exceeds). A candidate is ACCEPTED only if it is (a) verified CORRECT and (b) score STRICTLY BETTER than the current best; regressions and incorrect (poisoned) submissions are REJECTED and the prior best is kept (rollback). Seeded with 2026-07 honest gaps (all measured vs the tool, not self-graded). Neg-controls prove the gate bites. This governs the crew's iterations so no change lands unless it truly advances SOTA -- the anti-Claude-heavy, anti-attack loop the operator described.