Terminal.app draws block elements from the font, with the halves off the cell's middle, so quadrant posters came out as rows of shifted dots. The new cover style "cells" uses one background color per cell and no glyph; auto picks it when TERM_PROGRAM is Apple_Terminal. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019reK4DUGYqDUjniWYJvwUW