Decentralized Agent Experience Reuse Network: Architecture, Immunity, and Perpetuity

The current AI agent ecosystem faces an "Experience Evaporation Crisis" — verified solutions are permanently lost after each session, causing massive global redundant computation. This paper reconstructs the underlying cognitive paradigm of agents by proposing a complete decoupling of the Cognitive Core (Memory) from the Execution Terminal (Action). We construct a four-tier recursive experience network from individual self-memory (L1) to the global public Noah’s World (L4). The system introduces strict lifecycle management, a three-tier experience immunity mechanism (Draft‑Trial‑Proven), and an execution‑free AI Arbiter under algorithmic autonomy and community co‑governance to enforce supreme physical laws for neutrality, purity, and security. This paper provides complete mathematical expressions and standardized parameters for three core algorithms: Experience Validity Score, Global Trust Score, and Lifecycle Liquidation Weight. A cross-framework skill‑package standard JSON Schema is defined. Finally, we propose an ultimate physical challenge: how logical decentralization counteracts physical carrier centralization. Based on the evolution of digital civilization, we establish the Grand Unified Philosophy of Digital Civilization, achieving full‑dimensional closure across technology, mathematics, security, and philosophy.