Core Data and Code for Reducing Measurement Cost for Thread-Count Selection in DuckDB

Scientific data release accompanying revision V97 of Reducing Measurement Cost for Thread-Count Selection in DuckDB. Start with START_HERE_V97.txt. The current journal supplement is ESM_2_V97.pdf (53 pages, Appendices A–Q). Core_data_code_V94.zip is the unchanged 335.95 MB scientific archive containing original timing records, SQL, frozen decisions, algorithms, analysis scripts and provenance checks. Large generated database images are omitted; README_CORE.txt distinguishes record reanalysis, new SQL execution and exact original-image verification. ESM_2_V94.pdf, ESM_2_V95.pdf and START_HERE_V95.txt are superseded snapshots. Extended_experiment_record_V93.pdf preserves the earlier 212-page account and historical numbering as optional archival reading, not the current journal supplement. Third-party methods, workloads and dependencies retain their original rights and attribution; this deposit does not impose a new blanket license on third-party content. See START_HERE_V97.txt, README_CORE.txt and CORE_RECHECK_V94.json for scope and reproduction commands.