Problem/Motivation
I love the new navigation and have found it to be an improvement in almost every way. The only sticking point for me to rolling it out across all of our sites is the lack of a cache clear option, which is currently provided by Admin Toolbar Extras:

Without this option, if you want to clear the cache from the UI, you have to go via the menu to the Performance page and do it there. Granted, that is how it works currently with toolbar if you don't use ATE, but I think that if we are now specifically targeting non-command line users, we should prioritise this feature in Navigation.
Proposed resolution
Add a shortcut to Navigation to clear the cache.
Remaining tasks
Discuss, decide approach, proceed or not.
User interface changes
TBC
API changes
N/A
Data model changes
N/A
Release notes snippet
N/A
Comments
Comment #2
lostcarpark commentedI'm also looking for this functionality.
This seems like good something a contrib module can fill in for, at least in the short term.
I have created a new module "Navigation Extra Tools", which replicates the functionality for the Admin Toolbar Extra Tools submodule.
https://www.drupal.org/project/navigation_extra_tools
Perhaps at some point it might make sense to merge into the core navigation. However, I'm happy to maintain as a contrib module as long as needed.
It's currently not covered by the security policy. I've applied for permission to add security coverage.
Comment #3
james.williamsDoes https://www.drupal.org/node/3414904 mean this is no longer needed, as I think blocks can be placed in the navigation? I could be wrong!
Comment #4
paulkittredge commentedAs far as I can tell (having tried to address this specific problem this morning), the module that lostcarpark so helpfully created is still the best solution here, since the blocks you can add to the Navigation layout at
/admin/config/user-interface/navigation-blockare limited to 'navigation' blocks (that is, menus). The clear cache block doesn't appear to be available to be added.