The description said “Starred” plugin can “Star frequently used file and searches”. However, I can’t find a way to star “searches”. If it already does, that should be sufficient to star a tag search.
I know this might be confusing, but after you put in the search query, go to the Starred plugin, and the button to the right will let you star the current search.
Ah, got it!
Then an UI improvement will be add an “starred” button to the search pane. I guess “Starred” being its own plugin may be the reason why this button wasn’t added to other pane.
Yup, that feature request already exists https://forum.obsidian.md/t/add-star-current-search-button-to-search-panel/4506