The pin/unpin toggle is a mode control, not navigation — grouping it with back/forward/jump implied they work alike. Pull it out of ReaderActionBar into a standalone ReaderPinButton placed before the title (ClidePaneChrome.leading), leaving the right-hand navigator to back/forward/jump-to-pin/edit. Applies to all three readers. (T-198) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>