CSS cannot target a character inside a text node, so the marks are now wrapped
in their own .ab-q element at render time and hidden with a single class on
body. Toggling is instant regardless of segment count, and the stored text is
never modified.
Also fixes the toggle looking inert on a freshly cast book: it previously only
added missing marks and never hid the ones the book already carried. Button
moved bottom-right as a larger labelled pill, clear of the search controls.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
mARTin-B78
f837ba1a4f
