TUI & CLI Design

Build terminal applications that feel professional — the way lazygit, k9s, btop, helix, fzf, and yazi feel. The terminal is enjoying a renaissance: Charm (Go), Ratatui (Rust), Textual (Python), and Ink (TypeScript) have each crystallized a mature philosophy. This skill teaches the universal patterns that make TUIs feel good plus per-ecosystem deep-dives in references/.

When to read which reference

Use this skill's body for the universal principles below. Then load reference files on demand: