No webpage thumbnail cache

[TriVoxel]

Description

Webpages have thumbnails when you have loaded them. What I mean by this is their appearance in the "Tangram" tabs menu. Once loaded, the tab has a small preview of the webpage. However, when you close the app and re-open it, there are no more thumbnails which can make it tricky to tell the tabs apart quickly. Therefor, I think it would be good to cache the thumbnails, and replace them once the page has been loaded again. This way, the user always sees a preview of their webapps instead of an empty gray tile.

Debugging Information

WebKitGTK 2.40.1
GJS 1.76.0
Adw 1.3.2
GTK 4.10.3
GLib 2.76.2
libsoup 3.4.1
GStreamer 1.20.6

Operating System

Fedora 38

Desktop Environment

GNOME Shell 44 Wayland

Example screenshot