Notebook is an open-source, local-first infinite canvas built for STEM. Write LaTeX, draw physics and engineering diagrams, plot functions, create charts and tables, annotate PDFs, and export your work: all in one workspace. Built with .NET, Next.js, TypeScript, SQLite, Konva and MathJax. The vision: evolve it into a computational canvas where scientific simulations and AI/ML models can run alongside your notes.