fix: format the floating panel stylesheet and keep the locate-button room private

client/src/components/Map/switcherRow.ts

@@ -2,7 +2,7 @@ import type { CSSProperties } from 'react';
 import { MAP_LAYER_SWITCHER_INSET } from './MapLayerSwitcher';
 
 /** What the switcher row leaves free at the map's trailing edge: the locate button (20px off the edge, 44px wide) and a gap. */
-export const LOCATE_BUTTON_ROOM = 76;
+const LOCATE_BUTTON_ROOM = 76;
 
 /**
  * The column along a map's bottom edge that holds the layer switcher, both

client/src/styles/studio-floating.css

@@ -6,5 +6,7 @@
  */
 @media (max-width: 1079px) {
   .trek-dash .st-panel.st-inspector,
-  .trek-dash .st-panel.st-side { background: var(--surface); }
+  .trek-dash .st-panel.st-side {
+    background: var(--surface);
+  }
 }