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Bundles the 2026-05-29 Java↔C++ math-correctness audit (doc/reviewer/ java-port-audit.md, 11 findings) with two follow-up fixes. Audit code changes: - Finding 3 (spherical_functional): edge-DOF replacement parameterization via spher_eff_lambda; edge gradient α_opp⁺+α_opp⁻−θ_e (drops additive −(S⁺+S⁻)/2) - Finding 4 (spherical_hessian): always-compiled edge-DOF throw guard - Finding 6 (period_matrix): faithful normalizeModulus (0≤Re≤½, Im≥0, |τ|≥1) - Finding 9 (inversive_distance): degenerate-face limiting angles, no skip - Findings 1/2 (euclidean): degenerate gradient limiting angles + Hessian guard Euclidean holonomy/τ fix: develop the cut surface across the dual spanning tree only (cut_graph now exposes is_dual_tree), so genus-1 cut edges yield non-degenerate lattice generators. Previously τ came out 0 / NaN / 1e13 on the bundled tori; now matches the analytic revolution modulus i·√(R²−r²)/r. Re-enabled τ reporting in the Euclidean CLI; rewrote validation.md §3/§4 accordingly. Tests (240 CGAL, 0 skipped): - HolonomyEndToEnd ×3 — tori of revolution (4×4, hex 6×6, 8×8) vs analytic modulus - SphericalFunctional.EdgeGradient_RegularTetClosedForm — independent closed-form π/3 oracle locking the Finding-3 edge formula (the path-integral FD check cannot detect a wrong-but-conservative gradient) Also documents the latent spherical/hyperbolic holonomy-extraction bug (same single-development pattern, dead code today) in research-track.md (Phase 9c/10), and adds favour/normalisations to the codespell ignore list. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>