A Reproducible Workflow Layer for 'Scopus' Bibliographic Searches // A coherent, quota-aware workflow layer over the Elsevier 'Scopus' Search 'API' https://dev.elsevier.com/sc_apis.html. It builds reproducible search plans, retrieves records with rate- limit handling, retry with back-off and optional resumable caching, normalises results to a stable tidy schema, extracts and tracks changes in Digital Object Identifiers (DOIs), compares publication trends across topics and exports to formats compatible with downstream bibliometric tools. Network and 'API' errors are surfaced as typed conditions so that callers can respond to them programmatically. 'Scopus' is a trademark of Elsevier. This package is an independent client and is not affiliated with or endorsed by Elsevier.