ClosedClaims-Ledger: 56-Claim Verification Ledger and Tabular Dataset for Chain Atom W = u^5 v + v^6 and Three-Block Sextic F

Standalone 56-claim verification ledger (`docs/CLAIMS_56.md`, `docs/FULL_LEDGER.md`, `docs/SCOPE.md`, `tables/claims_56.csv`, `tables/fjrw_sectors.csv`, `tables/milnor_weights.csv`) auditing every closed algebraic, combinatorial, and grading claim for the chain atom W = u^5 v + v^6 and its three-block Thom-Sebastiani sextic sum F. Catalogs and audits 56 self-contained algebraic and combinatorial claims while explicitly marking the ambient Clay Hodge Conjecture as outside the closed scope. Copyright (c) 2026 Benjamin Stanley Frohman. Licensed under the Apache License, Version 2.0.