This repository implements a CLI tool that analyzes Git commit timestamps to infer project work intensity and detect overtime patterns, computing a '996 index' and classifying project type (corporate vs open-source). The tool runs locally, collects git log data, and outputs terminal reports, web reports (Vue 3 + chart.xkcd), JSON, or Markdown. It supports single-repo, multi-repo, and team analysis, with timezone detection, Chinese holiday awareness, and anonymous benchmarking. The architecture is modular: a core algorithm layer (work time detection, overtime analysis, project classification) is separate from the CLI orchestration, git data collection, and output formatting. The codebase demonstrates strong engineering practices: TypeScript throughout, comprehensive unit/integration tests (Jest, Vitest), i18n with type safety, CI/CD via GitHub Actions, and a clean separation of concerns that allows individual algorithm modules to be extracted and reused. The web report generator produces self-contained static HTML, and the benchmark builder implements privacy-preserving data export. Overall, it is a well-crafted, production-quality tool with high reuse potential.