Cortex v0.1.0

First public release of Cortex, a small macOS-only terminal code editor written in Rust.

Highlights

Opens a file or directory from the command line.
Edits one rope-backed buffer in the terminal alternate screen.
Saves files with dirty-buffer protection and visible save errors.
Restores the terminal after normal exits and common setup failures.
Supports Emacs-shaped movement, save, quit, undo, mark, cut, yank, and search keys.
Includes a minimal directory picker with expandable folders.
Includes slash commands for save, open, search, undo, redo, quit, and help.
Highlights Rust, Markdown, JSON, TOML, Python, JavaScript, JSX, TypeScript, TSX, and Ruby files.
Ships macOS arm64 release assets through GitHub Releases.
Provides install.sh, cortex --version, and cortex --check-update.

curl -fsSL https://raw.githubusercontent.com/owainlewis/cortex/main/install.sh | bash

The installer downloads the latest macOS arm64 release, verifies its checksum, and installs cortex to ~/.local/bin by default.

Cortex is macOS-only.
This release is intentionally small.
There is one active buffer.
There are no splits, tabs, config, plugins, LSP, AI integration, or embedded terminal pane yet.
Long lines are clipped rather than wrapped.
External file changes are not watched or reloaded.