High-performance, feature-complete text editor engine for .NET 10 — built in pure C# with no UI dependencies. Includes a piece-table buffer, multi-cursor editing, syntax highlighting, code folding, snippets, TextMate grammars, diff engine, undo/redo, C# REPL, plugin system. Designed for building IDEs, code editors, and developer tools

✨This is the core engine library of the editor, which has the basic functions required for general editing.