Search across all webbrowser tabs

Plasma 5.X : hovering over the webbrowser taskbar icon, i get a list of all currently active tabs of all my various instances/windows of, say, firefox.

It would be good if on that prompt I had a searchbar to land on a precise tab.

Context : it’s very usual for me to have 10+ instances of firefox, each having 100+ tabs in it. While i strive to ensure each instance deals about one problem currently being solved, i sometimes fail and concatenate 2 subjects/group of tabs on one window.
So if KDE summarizes my instance with a tab about project1, i then completely tabs about project2 reside there too.
If the search could directly jump me to that tab of interest, it would make KDE even more superior to all the desktops than it is already!

Thanks

(Support for firefox AND derivatives, as well as chromium and derivatives would be great)

PS : has this discuss dot kde dot org/t/dolphin-does-not-show-previews/16529 been worked on by any chance ? (.opus thumbnails for offline song library)

Hi - for what it’s worth, while not literally in a taskbar hover-over, searching browser tabs within KRunner or the Application Launcher’s search should be enabled by Plasma Browser Integration: Plasma/Browser Integration - KDE Community Wiki