Reproducibility data and exact certificate for Certified continuum direction reversal in the Swift-Hohenberg equation with local response-onset stratification

Version 3.0 updates the public Version 2.0 record to support the V8.1 manuscript. It contains the exact-rational Swift-Hohenberg continuum certificate, the quantified Wiener-algebra full-flow and finite-amplitude response enclosure, the exact projective-branch and curvature-obstruction record, three-path two-grid ETDRK4 bridge data at epsilon=0, a same-implementation deterministic recomputation, a separately written split-step/RK4 bridge check at epsilon=0, uncertainty-qualified Hamiltonian root and holdout summaries, response-onset data, the construction-dependent quartic candidate, current figures, and deterministic verification scripts. Manuscript and editorial files are intentionally excluded.