fix(ui): remove rounded candidate list styling

Author: ChouChiu

src/frontend/manual_search.rs

@@ -190,7 +190,7 @@ impl SimpleComponent for ManualSearchModel {
 
         let results = gtk::ListBox::new();
         results.set_selection_mode(gtk::SelectionMode::Single);
-        results.add_css_class("boxed-list");
+        results.add_css_class("manual-search-results");
 
         let preview = gtk::TextView::builder()
             .editable(false)

src/frontend/manual_search/view.rs

@@ -63,6 +63,7 @@ pub(super) fn install_css() {
     crate::frontend::style::install(
         r#"
         .manual-search-bar, .manual-search-footer { padding: 12px; }
+        .manual-search-results, .manual-search-results > row { border-radius: 0; }
         .manual-result-row { padding: 10px 12px; }
         "#,
     );