Document stroke per side and its tokens, path editor changes, image
bounds resize, configurable shortcuts, tokens from a shared library
as tokens source, canvas background color tokens, Penpot board
presets, the 3x export scale, the text editing context menu, the
organization and team selector, the hide resolved comments option,
account security and the Check for updates option.
Fix outdated notes about WebGL exports, background blur exports,
library token import and path editor shortcuts. Add the images for
these sections and remove the ones no longer used.
AI-assisted-by: claude-opus-5-5
Document stroke to path, toolbar flyouts, line and arrow tools,
font previews, page multi-select, and dashboard grid/list view.
Relates to #9145, #10403, #10580, #10691
