fix: 删除前端冗余按钮组件

frontend/src/components/Toolbar/index.tsx

@@ -1,19 +1,10 @@
-import { useGraphStore } from '../../store/graphStore';
+import { useGraphStore } from "../../store/graphStore";
 
 export function Toolbar() {
-  const {
-    startCreatingNode,
-    loading,
-    refresh,
-    setLayoutType,
-    layoutType,
-  } = useGraphStore();
+  const { startCreatingNode, loading, refresh, setLayoutType, layoutType } =
+    useGraphStore();
 
-  const layouts = [
-    { type: 'force' as const, label: '力导向', icon: '🕸️' },
-    { type: 'circular' as const, label: '圆形', icon: '⭕' },
-    { type: 'grid' as const, label: '网格', icon: '▦' },
-  ];
+  const layouts = [{ type: "force" as const, label: "力导向", icon: "🕸️" }];
 
   return (
     <div className="bg-white dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700 px-4 py-2 flex items-center gap-2">
@@ -38,32 +29,6 @@ export function Toolbar() {
         <span>🔄</span>
         <span>刷新</span>
       </button>
-
-      <div className="ml-2 flex items-center gap-1">
-        {layouts.map((layout) => (
-          <button
-            key={layout.type}
-            type="button"
-            onClick={() => setLayoutType(layout.type)}
-            className={`flex items-center gap-1.5 px-3 py-1.5 text-sm rounded transition-colors ${
-              layoutType === layout.type
-                ? 'bg-blue-500 text-white'
-                : 'bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600'
-            }`}
-          >
-            <span>{layout.icon}</span>
-            <span>{layout.label}</span>
-          </button>
-        ))}
-      </div>
-
-      <div className="w-px h-6 bg-gray-300 dark:bg-gray-600 ml-2" />
-
-      <div className="text-xs text-gray-500 dark:text-gray-400 flex gap-3">
-        <span>Ctrl+N 创建节点</span>
-        <span>Ctrl+E 编辑节点</span>
-        <span>Delete 删除</span>
-      </div>
     </div>
   );
 }