Boundary alignment for credible low-emission hydrogen deployment: an open-metadata evidence map and structured critical synthesis — supporting data and evidence map

Superseded version notice (10 August 2026): This Version 3 record is retained as a historical provenance state and has been superseded by Version 4. Its evidence-map accounting and figure-source data predate the final reconciliation of the frozen 154-record screening ledger into 152 included core academic records plus two audit-retained exclusions (OA0095 and OA0120), as well as the blinded second-author appraisal and consensus adjudication. Version 3 should not be used to reproduce the revised manuscript or the reconciled Figs. 1–4. Please use Version 4: 10.5281/zenodo.21870151. Version 3 synchronizes the public evidence package with the final submission manuscript “Boundary alignment for credible low-emission hydrogen deployment: an open-metadata evidence map and structured critical synthesis”. It remaps public Reference no. values to the final 182-reference order, adds the final 15_Figure_Source_Data.xlsx workbook for Figs. 1, 2, 3, 4 and 7, and includes an auditable V2-to-current reference mapping and change log. It also discloses the bounded OpenAlex capture (14 queries × the first 25 API-default-order records, without an explicit sort parameter or pagination), publishes the fixed six-dimension High/Moderate/Low codebook and page-anchored rationales for the 24-study appraisal subset, and replaces stale Final Claims paragraph locators with stable Section + Claim ID + exact-text-prefix anchors. The core academic denominator remains 154, the separate Policy17 layer remains 17 studies, the purposive deep-appraisal subset remains 24 studies, and the final claim map remains 41 claims. Candidate IDs, article DOIs, evidence decisions, inclusion/exclusion judgments, claim credibility classifications, Claim text and claim-to-source relationships are unchanged. Version 3 does not represent a new search, screening exercise or independent duplicate review. Raw licensed Scopus exports and copyrighted article full texts are not redistributed.