This repository is a comprehensive knowledge base for AI-assisted software engineering, specifically focused on optimizing the use of Cursor AI and Claude Code. It consists of seven detailed handbooks covering topics such as rule configuration, troubleshooting, professional workflows, advanced reasoning, and stack-specific guides. The content provides practical strategies for context engineering, rule management, and agentic coding to improve AI reliability and developer productivity. As a pure documentation collection, it requires no execution environment and is immediately usable for reference and implementation.