Function handle_ui_browser_focus_info 

pub(crate) async fn handle_ui_browser_focus_info(
    __arg0: State<AppState>,
    caller: Option<Extension<Caller>>,
    __arg2: Json<UiBrowserFocusInfoRequest>,
) -> impl IntoResponse

POST /api/v1/ui/browser/focus_info — backs BrowserFocusInfo. Returns the host’s {focused} shape verbatim under data.