The pin was a small accent-coloured icon before the feed's name. It is now a disc on the
artwork's corner, where a failing feed's mark is, in the accent and the ink the theme already
pairs with it for primary buttons (checked by tests/contrast.js), so no palette changes. A feed
both pinned and failing keeps the error mark at the bottom corner and the pin at the top.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>