Mark the search field with a dynamic property when a find-in-page query
has zero matches, and let the chrome stylesheet show a red-tinted
background. Clear the state immediately for empty searches.
Draw the remaining Qt chrome icons through the existing generated icon
path instead of loading TinyVG resources. Add generated folder and
chevron icons for menus, the bookmarks bar, and find-in-page controls,
and use the generated globe icon for bookmarks without favicons.
Remove the Qt TinyVG icon engine and drop the unused TVG resources from
the Qt resource file.
The `WA_OpaquePaintEvent` attribute on `BrowserWindow` means Qt no
longer fills widget backgrounds automatically. Plain `QWidget`
subclasses do not paint their stylesheet backgrounds by default, so the
find in page bar lost its background color and did not clear its state
correctly between repeats . Setting `WA_StyledBackground` tells Qt to
honor the stylesheet background property in the widget's paint cycle.
Add shared chrome styling helpers and use them to paint the Linux
browser tab strip and surrounding toolbar widgets. Make the browser
window frameless on Qt so the tabs, toolbar, and window controls can
share one integrated chrome surface.
