修改画面布局

frontend/src/CategoryEffectTreeApp.tsx

@@ -1217,9 +1217,8 @@ export default function CategoryEffectTreeApp() {
           </div>
 
           <div className="cet-legend cet-legend--scale">
-            <div className="cet-legend-bar" aria-label="ROV 色阶" />
             <span className="cet-legend-tag cet-legend-tag--bad">差</span>
-            <span className="cet-legend-tag">正常</span>
+            <div className="cet-legend-bar" aria-label="ROV 色阶" />
             <span className="cet-legend-tag cet-legend-tag--good">好</span>
           </div>
           <div className="cet-legend cet-legend--zero">