Update documentation to treat the Tauri/HTML prototype as legacy and define Bigscreen as a native Qt/QML/C++ shell. Remove in-shell PIN/login as a target feature and clarify that account selection, sign-in, and session choice are handled by a controller-friendly OS login (SDDM) implemented under Desktop Mode. Add phased plan, build/run notes for Qt vs legacy Tauri prototype, and clarify session/login workflow and responsibilities across Bigscreen/, Desktop/, and the top-level README.
Replace the old concise Desktop README with a much-expanded Desktop/README-Desktop.md that consolidates and extends Desktop Mode documentation. The new file adds Design Vision, Windows/macOS/KDE influences, Nebula identity, current development status, milestones (prototype → theming → apps → packaging), recommended workflow (symlinks, apply/reload scripts), suggested layout and visual identity, and useful test commands. Deleted the old Desktop/README.md and updated the top-level README.md to point to Desktop/README-Desktop.md. Purpose: provide a clearer, actionable guide for Desktop Mode development and to separate Desktop Mode docs from Bigscreen Mode.
Add comprehensive READMEs for Bigscreen and Desktop modes, and relocate the Tauri frontend prototype into a new Bigscreen/ subdirectory. This moves package.json/package-lock, src, src-tauri, assets, views, styles and related files into Bigscreen/ to separate the controller-first shell from top-level docs. Update the root README.md to reframe the project as "NebulaOS", describe Bigscreen/Desktop modes, the vision, tech stack and development notes. This reorganizes the repo layout for clearer mode separation and documentation.