Built ScholarOS into a much more complete and polished local-first productivity platform over this development session. I focused on improving stability, usability, testing, and documentation rather than just adding features.Implemented several new apps and productivity tools including Formula Sheet, Calendar Lite, Assignment Planner, Flashcards, SAT Vocabulary Builder, Study Dashboard, Productivity Hub, Focus Mode, Workspace Layouts, Widgets, and an advanced Command Palette for quickly launching apps and actions.Improved the desktop experience with better window management, layout recovery, responsive behavior, keyboard shortcuts, drag-and-drop improvements, backup and restore, accessibility enhancements, and overall UI polish. Fixed overlapping layouts, hydration issues, z-index behavior, storage recovery, and numerous edge cases to make the desktop feel much more reliable.Performed a full production-quality pass across the project, resolving lint warnings, TypeScript build issues, and improving maintainability without introducing breaking changes. Verified that the project successfully passes linting, production builds, unit tests, and Playwright end-to-end tests.Completely redesigned the documentation with a professional README including architecture diagrams, installation instructions, feature documentation, technology stack, roadmap, testing information, screenshots section, contribution guide, and deployment details.Deployed the latest version to Vercel and verified the live application after completing the release audit. Also cleaned up the repository and prepared it for public release on GitHub.ScholarOS is now a polished local-first web desktop focused on helping students organize studying, assignments, SAT preparation, productivity, privacy, and academic planning through a modern browser-based operating system experience. It has reached a stable release-ready state with comprehensive documentation, automated testing, and a fully deployed live demo.