ArcOS is a Cognitive Clone Operating System — an NLOS (Natural-Language Operating System) that reconstructs and executes a user's cognitive architecture deterministically using natural language as its execution layer. This unified whitepaper (PolyAgora & ArcOS) describes the theoretical foundations, architecture, execution model, and design principles of ArcOS v1.0 and its shared NLOS framework with PolyAgora. It explains how ArcOS extracts value hierarchies, reasoning habits, abstraction patterns, and decision heuristics, and runs them as a stable cognitive OS without any code, APIs, or external orchestration. --- ### 📬 ContactIf you have questions, suggestions, or wish to discuss this work: - GitHub Issues (PolyAgora): https://github.com/Takeshi-Sakamoto5/PolyAgora/issues- GitHub Issues (ArcOS): https://github.com/Takeshi-Sakamoto5/ArcOS/issues- X (Twitter): https://twitter.com/polyagora6 For discussion or collaboration, feel free to open an Issue on GitHub.