ZubrOS: App Manifests and Native Service Boundaries in an Experimental Linux Phone Environment

Developer-authored technical report on ZubrOS, a postmarketOS-based environment being tested on one Nothing Phone (1). It explains how a React/TypeScript shell, Node/SQLite application service and Rust hardware service are separated, and how small personal apps move from a manifest preview to installation and first-use permission grants. A linked 24-second browser demonstration shows a Reading log template and checked-item persistence across reload; it is not physical-handset footage. The report distinguishes observed hardware checks from incomplete calls and security work. There is no public source release, installer or testing date. I am the developer submitting this project; AI assisted development and the writing, as disclosed in the linked post.