This repository contains a suite of 152 installable Claude skills (76 builder and 76 checklist-reviewer pairs) that automate the generation and auditing of structured Excel workbooks for automotive engineering domains including functional safety (ISO 26262), cybersecurity (ISO/SAE 21434), SOTIF (ISO 21448), quality (IATF 16949, ASPICE), AUTOSAR, diagnostics (UDS), and systems engineering (SysML, MBSE). Each skill is a self-contained archive with a SKILL.md describing trigger phrases, Python scripts for workbook generation (using openpyxl), and reviewers that probe and validate outputs against checklists. The repository also includes supporting automation (chain-contract auditing, status regeneration) and extensive documentation of polish passes and weekly planning. The architecture is a collection of independent skill archives rather than a monolithic application. While the concept is robust and domain coverage is broad, the codebase exhibits significant quality issues: silent data corruption from column shifts and truncated files, incomplete check implementations in many reviewers, duplicated utility scripts, and a pattern of bugs surviving months before detection. The suite is actively maintained with weekly polish cycles.