Reproduction package for: Geometric support and cutting-direction mixing in cross-source validation of milling stability

This deposit contains two items: (1) the reproduction package, and (2) the manuscript PDF.

Reproduction package: (1) data/ — 236 derived files: the nominally stable evaluation domain (664 source records, 376 evaluation points, 86 experimental chatter points), paired train/test identities, point-level scores, direction and stable-label support summaries, continuous-coverage certificates, speed-block splits, fixed-budget verification queues, Eynian boundary comparisons and auxiliary diagnostics; (2) scripts/ — 122 Python scripts from the working archives, including the computation entry points for each table and figure; (3) EVIDENCE_MAP_CN.md and claim_file_manifest.json — claim-to-file mapping with SHA256 digests; (4) HASHES.txt — SHA256 manifest for all package files (43.4 MB uncompressed).

Manuscript: "Geometric support and cutting-direction mixing in cross-source validation of milling stability" (Yulong Li, Yang Sicong, Independent Researchers, Guiyang, China). It is posted here as a companion to the data package and is under consideration at a journal.

Software environment: Python 3.14.4, NumPy 2.5.1, SciPy 1.18.1, scikit-learn 1.9.0.

Notes: the scripts carry historical path conventions and are not a one-click rerun; inputs must be re-pointed explicitly (see README). Third-party original datasets and third-party code repositories are not redistributed. Withdrawn intermediate results are excluded. Code is licensed MIT and data/documentation CC BY 4.0; this record is licensed CC BY 4.0.