* Add sidebar help menu
* Fix help menu test wiring
* Fix help menu accessibility
* Use native popup for help menu
* Use icon button for sidebar help
* Add feedback composer and feedback API
* Allow preview builds without feedback env
* Tighten feedback upload limits
* Adjust sidebar footer padding
* Tighten sidebar footer spacing
* Add link affordances to help menu
* Polish sidebar feedback composer
* Move feedback icon to trailing edge
* Normalize help menu trailing icon sizes
* Enlarge help menu trailing icons
* Reduce help menu link icon size
* Shrink help menu link arrow
* Reduce help menu link arrow again
* Fix feedback message editor focus
* Add send feedback keyboard shortcut
* Polish feedback launch and delivery
