Bit of cleanup

tools/editor/styles/components/panel-section.css

@@ -0,0 +1,13 @@
+/* Component – Panel section */
+
+.panel-section {
+  padding: 0.875rem;
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  border-bottom: 1px solid var(--border);
+}
+
+.panel-section:last-child {
+  border-bottom: none;
+}