refactor: 简化导航菜单结构和清理未使用的导入

改进:
- 移除未使用的图标导入 (ChartBarIcon, RectangleStackIcon, PlayIcon, ServerIcon)
- 简化工具菜单结构，移除子菜单
- 将工具菜单改为直接链接到 /tools 页面
- 优化代码格式和换行

 用户体验:
- 简化导航结构，减少点击层级
- 更直观的工具访问方式

apps/desktop/src/components/Navigation.tsx

@@ -8,10 +8,7 @@ import {
   WrenchScrewdriverIcon,
   SparklesIcon,
   ChevronDownIcon,
-  ChartBarIcon,
-  RectangleStackIcon,
 } from '@heroicons/react/24/outline';
-import { PlayIcon, ServerIcon } from 'lucide-react';
 
 // 导航项类型定义
 interface NavItem {
@@ -75,21 +72,8 @@ const Navigation: React.FC = () => {
     {
       name: '工具',
       icon: WrenchScrewdriverIcon,
-      description: 'AI检索图片/数据清洗工具',
-      children: [
-        {
-          name: '工具中心',
-          href: '/tools',
-          icon: WrenchScrewdriverIcon,
-          description: 'AI检索图片/数据清洗工具'
-        },
-        {
-          name: 'TVAI FFmpeg 命令生成器',
-          href: '/tools/command-generator',
-          icon: CpuChipIcon,
-          description: '生成 Topaz Video AI FFmpeg 命令'
-        }
-      ]
+      href: '/tools',
+      description: 'AI检索图片/数据清洗工具'
     }
   ];
 
@@ -152,23 +136,20 @@ const Navigation: React.FC = () => {
                     <div key={item.name} className="relative">
                       <button
                         onClick={() => toggleDropdown(item.name)}
-                        className={`group flex items-center px-2 py-2 rounded-lg text-sm font-medium transition-all duration-200 relative overflow-hidden ${
-                          hasActive
+                        className={`group flex items-center px-2 py-2 rounded-lg text-sm font-medium transition-all duration-200 relative overflow-hidden ${hasActive
                             ? 'bg-gradient-to-r from-primary-100 to-primary-200 text-primary-700 shadow-sm'
                             : 'text-gray-600 hover:text-gray-900 hover:bg-gradient-to-r hover:from-gray-50 hover:to-gray-100'
-                        }`}
+                          }`}
                         title={item.description}
                       >
                         {hasActive && (
                           <div className="absolute inset-0 bg-gradient-to-r from-primary-500/10 to-primary-600/10"></div>
                         )}
-                        <Icon className={`mr-2 h-5 w-5 relative z-10 transition-all duration-200 ${
-                          hasActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600 group-hover:scale-110'
-                        }`} />
+                        <Icon className={`mr-2 h-5 w-5 relative z-10 transition-all duration-200 ${hasActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600 group-hover:scale-110'
+                          }`} />
                         <span className="relative z-10">{item.name}</span>
-                        <ChevronDownIcon className={`ml-1 h-4 w-4 relative z-10 transition-transform duration-200 ${
-                          isOpen ? 'rotate-180' : ''
-                        } ${hasActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600'}`} />
+                        <ChevronDownIcon className={`ml-1 h-4 w-4 relative z-10 transition-transform duration-200 ${isOpen ? 'rotate-180' : ''
+                          } ${hasActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600'}`} />
                       </button>
 
                       {/* 下拉菜单 */}
@@ -182,17 +163,15 @@ const Navigation: React.FC = () => {
                               <Link
                                 key={child.name}
                                 to={child.href || '#'}
-                                className={`group flex items-center px-4 py-2 text-sm transition-all duration-200 ${
-                                  childActive
+                                className={`group flex items-center px-4 py-2 text-sm transition-all duration-200 ${childActive
                                     ? 'bg-primary-50 text-primary-700'
                                     : 'text-gray-700 hover:bg-gray-50 hover:text-gray-900'
-                                }`}
+                                  }`}
                                 title={child.description}
                                 onClick={() => setOpenDropdown(null)}
                               >
-                                <ChildIcon className={`mr-3 h-4 w-4 transition-all duration-200 ${
-                                  childActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600'
-                                }`} />
+                                <ChildIcon className={`mr-3 h-4 w-4 transition-all duration-200 ${childActive ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600'
+                                  }`} />
                                 <div>
                                   <div className="font-medium">{child.name}</div>
                                   <div className="text-xs text-gray-500 mt-0.5">{child.description}</div>
@@ -213,19 +192,17 @@ const Navigation: React.FC = () => {
                   <Link
                     key={item.name}
                     to={item.href || '#'}
-                    className={`group flex items-center px-2 py-2 rounded-lg text-sm font-medium transition-all duration-200 relative overflow-hidden ${
-                      active
+                    className={`group flex items-center px-2 py-2 rounded-lg text-sm font-medium transition-all duration-200 relative overflow-hidden ${active
                         ? 'bg-gradient-to-r from-primary-100 to-primary-200 text-primary-700 shadow-sm'
                         : 'text-gray-600 hover:text-gray-900 hover:bg-gradient-to-r hover:from-gray-50 hover:to-gray-100'
-                    }`}
+                      }`}
                     title={item.description}
                   >
                     {active && (
                       <div className="absolute inset-0 bg-gradient-to-r from-primary-500/10 to-primary-600/10"></div>
                     )}
-                    <Icon className={`mr-2 h-5 w-5 relative z-10 transition-all duration-200 ${
-                      active ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600 group-hover:scale-110'
-                    }`} />
+                    <Icon className={`mr-2 h-5 w-5 relative z-10 transition-all duration-200 ${active ? 'text-primary-600' : 'text-gray-400 group-hover:text-gray-600 group-hover:scale-110'
+                      }`} />
                     <span className="relative z-10">{item.name}</span>
                   </Link>
                 );