pi-tui — Terminal UI Framework

Minimal terminal UI framework (@mariozechner/pi-tui) with differential rendering, component architecture, and flicker-free output via synchronized rendering (CSI 2026).

Mental Model

1. TUI manages a vertical Component tree — children render top-to-bottom
2. Differential rendering — only changed lines are written to the terminal
3. Single focus — one component receives keyboard input at a time
4. Overlay compositing — modal components layered on top of base content with ANSI-aware splicing
5. Width is law — every render(width) call must return lines ≤ width or TUI crashes

Decision Tree