This book serves as a comprehensive, hands-on guide for advanced learners, developers, and system architects aiming to design and build a novel AI-native operating system for mobile and PC platforms. It champions a modular, event-driven architecture, centered around event producers, a centralized event broker, and sophisticated multi-agent AI orchestrators. The core of the project involves leveraging powerful AI-driven tools like Cursor to accelerate development, refactor code, and enhance understanding across C, C++, Python, and Rust. The content meticulously details the integration of AI at the OS's foundation, not as an afterthought, focusing on loosely coupled, event-based interactions and enabling intelligent automation, resource management, and system self-healing through adaptive AI workflows. Practical implementation is paramount, with clear guidance on language selection for various OS layers and step-by-step instructions for building, testing, and validating the system using custom emulators. The overarching goal is to empower readers to move beyond theoretical concepts and engage in the practical development of a future-ready, scalable, and secure operating system. By emphasizing expert-level knowledge in AI-driven system design, multi-agent orchestration, and advanced tooling, the book provides the foundational understanding and practical skills necessary to prototype, test, and deploy intelligent, event-driven OSes. The desired impact is to evolve a mere possibility into a tangible, innovative operating system, fostering a new generation of developers capable of building truly intelligent and adaptive computing environments.