Personal AI tools can now be generated from natural-language requests, but they often remain isolated after creation. We present PSI, a shared-state architecture that turns independently generated modules into coherent instruments: persistent, connected, and chat-complementary artifacts accessible through both GUIs and a generic chat agent. By publishing current state and write-back affordances to a shared personal-context bus, modules enable cross-module reasoning and synchronized actions across interfaces. We study PSI through a three-week autobiographical deployment in a self-developed personal AI environment and show that later-generated instruments can be integrated automatically through the same contract. PSI identifies shared state as the missing systems layer that transforms AI-generated personal software from isolated apps into coherent personal computing environments.

翻译：个人AI工具现已能通过自然语言请求生成，但生成后往往处于孤立状态。我们提出PSI（共享状态架构），将独立生成的模块转化为连贯工具：持久化、互联且与聊天功能互补的制品，可通过图形用户界面和通用聊天代理访问。通过向共享个人上下文总线发布当前状态和写回能力，模块实现跨模块推理和跨界面同步操作。我们通过在三周内于自研个人AI环境中的自传式部署研究PSI，表明后续生成的工具可通过同一协议自动集成。PSI将共享状态定位为缺失的系统层，使AI生成的个人软件从孤立应用转变为连贯的个人计算环境。