Animated ASCII Banners for CLI

This feature thread tracks the evolution of creating animated ASCII banners for command-line interfaces (CLIs). Initially, the focus was on the technical challenges of rendering dynamic text-based graphics in highly constrained terminal environments. This post details the engineering effort behind GitHub Copilot CLI's animated banner, highlighting the complexities of terminal inconsistencies, ANSI color handling, accessibility considerations, and the development of custom tooling to bridge the gap between design and CLI engineering. The evolution includes building a custom ASCII animation editor, mapping semantic color roles to ANSI codes for graceful degradation, and integrating with Ink (React for the terminal) for rendering.