css: extract terminal pane styles to hive-fr0nt::TERMINAL_CSS

hive-c0re/src/dashboard.rs

@@ -118,8 +118,9 @@ async fn serve_css() -> impl IntoResponse {
     // to declare what's actually page-specific. One HTTP request, no
     // per-asset cache to invalidate.
     let body = format!(
-        "{}\n{}",
+        "{}\n{}\n{}",
         hive_fr0nt::BASE_CSS,
+        hive_fr0nt::TERMINAL_CSS,
         include_str!("../assets/dashboard.css"),
     );
     ([("content-type", "text/css")], body)