irisandClaude Opus 5
e76617e210
A command, a tool's output and a code block in a reply are the one thing on this screen that is not somebody's prose, and they now say so: Mocha's Crust, which sits below Base, so the same colour is one clear step down both on the page where a reply is drawn and on the card where a tool call is. The renderer's code background was `surfaceVariant`, which is exactly a card's own fill -- a fenced block inside a tool call had no background at all, and one in a reply read as a step *up* out of the page. Tool output takes the monospace face with it. It is column-aligned far more often than it is prose -- a listing, a diff, a table of numbers -- and a proportional font silently destroys the alignment that carried the meaning. `RawBlock` is a composable rather than a modifier because the inset is part of it: monospace text against the edge of a tinted block reads as clipping. A call with neither a subject nor any other field draws nothing at all rather than an empty tinted rectangle. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>