This repository is a curated suite of 152 Claude AI skills (76 builder + 76 paired checklist reviewer archives) for generating structured Excel workbooks across the automotive engineering lifecycle. Domains include ISO 26262 functional safety, ISO/SAE 21434 cybersecurity, ISO 21448 SOTIF, ASPICE, AUTOSAR, SysML/MBSE, diagnostics (UDS, DBC, ODX), calibration (A2L), quality tools (APQP, PPAP, FMEA), and program management. Each `.skill` file is a ZIP archive containing SKILL.md, Python generators/reviewers, references, and shared utilities. Builders produce multi-tab xlsx workbooks from JSON input; reviewers validate existing workbooks and emit compliance checklists with dashboards. The suite is maintained via an autonomous weekly cycle (plan, polish, docs, release), with status tracking, chain-contract audits, and known issue catalogs. While the concept is robust, many shipped skills suffer from documentation/code drift (advertised check counts mismatch actuals), silent failures (empty workbooks certified as compliant), and duplicated shared scripts across 152 archives.