What
The menu on a plugin's details screen no longer uses its own arrow-key handling and "> " pointer. It now uses the same selection list as other menus in Claude Code. Wrap-around is off, so pressing down on the last option does not jump back to the first one.
While a plugin is being installed, the option you picked changes its label to "Installing…". A "repository" action has also been added to the menu's code, but it does nothing yet.
Why
The menu now behaves like the other selection lists in Claude Code, and you can see that an install is still running instead of wondering whether the choice was registered.