refactor: 移除 Dashboard 页面及相关功能，更新路由和组件逻辑

- 移除 Dashboard 相关的组件、特性和测试代码，简化项目结构。
- 更新 PageSkeleton 组件，默认渲染工具页面骨架。
- 修改 RouterContainer 和 RouterProvider 以适应新的默认路由策略，确保用户直接访问 timestamp 页面。
- 更新测试用例，确保在新结构下的功能正常。

src/components/PageSkeleton.tsx

@@ -4,30 +4,6 @@
  * 用于 Suspense fallback 和初始加载状态，提供平滑的视觉过渡
  * 避免白屏闪烁，减少布局偏移
  */
-interface PageSkeletonProps {
-  /** 骨架屏类型 */
-  variant?: 'dashboard' | 'tool';
-}
-
-/**
- * 仪表盘卡片骨架屏
- */
-function DashboardCardSkeleton() {
-  return (
-    <div className="rounded-xl border border-border p-5 h-[100px]">
-      <div className="flex justify-between items-start">
-        <div className="flex gap-3 items-center">
-          <div className="w-10 h-10 rounded-lg bg-muted animate-pulse" />
-          <div>
-            <div className="w-24 h-5 bg-muted rounded animate-pulse" />
-            <div className="w-32 h-3.5 bg-muted rounded animate-pulse mt-1.5" />
-          </div>
-        </div>
-        <div className="w-3 h-3 rounded-full bg-muted animate-pulse" />
-      </div>
-    </div>
-  );
-}
 
 /**
  * 工具页面骨架屏
@@ -57,22 +33,9 @@ function ToolPageSkeleton() {
 
 /**
  * 页面加载骨架屏
- *
- * @param props - PageSkeletonProps
- * @returns 骨架屏 JSX 元素
  */
-export default function PageSkeleton({ variant = 'dashboard' }: PageSkeletonProps) {
-  if (variant === 'tool') {
-    return <ToolPageSkeleton />;
-  }
-
-  return (
-    <div className="grid grid-cols-1 sm:grid-cols-[repeat(auto-fill,minmax(300px,1fr))] auto-rows-fr gap-4 p-4">
-      {Array.from({ length: 6 }).map((_, index) => (
-        <DashboardCardSkeleton key={index} />
-      ))}
-    </div>
-  );
+export default function PageSkeleton() {
+  return <ToolPageSkeleton />;
 }
 
 PageSkeleton.displayName = 'PageSkeleton';

src/components/RouterContainer.tsx

@@ -30,7 +30,7 @@ function LoadedPage({ pageKey }: { pageKey: PageType }) {
   }, [pageKey]);
 
   if (!Page) {
-    return <PageSkeleton variant={pageKey === 'dashboard' ? 'dashboard' : 'tool'} />;
+    return <PageSkeleton />;
   }
 
   return <Page />;
@@ -39,9 +39,6 @@ function LoadedPage({ pageKey }: { pageKey: PageType }) {
 export default function RouterContainer() {
   const { currentPage } = useRouter();
 
-  const animationClass =
-    currentPage === 'dashboard' ? 'page-transition-dashboard' : 'page-transition-enter';
-
   const currentFeature = getFeatureByKey(currentPage);
 
   return (
@@ -49,8 +46,7 @@ export default function RouterContainer() {
       key={currentPage}
       className={cn(
         'flex-1 flex flex-col overflow-x-hidden overflow-y-auto',
-        'motion-reduce:transition-none',
-        animationClass,
+        'motion-reduce:transition-none page-transition-enter',
       )}
     >
       <PageErrorBoundary resetKey={currentPage}>

src/components/__tests__/PageSkeleton.test.tsx

@@ -4,41 +4,17 @@ import PageSkeleton from '@/components/PageSkeleton';
 
 describe('PageSkeleton 组件', () => {
   describe('渲染测试', () => {
-    it('默认应渲染 dashboard 骨架屏', () => {
+    it('应渲染工具页面骨架', () => {
       const { container } = render(<PageSkeleton />);
 
-      // dashboard 骨架屏包含 6 个卡片
-      const cards = container.querySelectorAll('.rounded-xl');
-      expect(cards.length).toBe(6);
-    });
-
-    it('variant 为 dashboard 时应渲染仪表盘卡片骨架', () => {
-      const { container } = render(<PageSkeleton variant="dashboard" />);
-
-      // 每个卡片有 2 个骨架元素（图标、文本），6 个卡片共 12 个
-      const cards = container.querySelectorAll('.rounded-xl');
-      expect(cards.length).toBe(6);
-    });
-
-    it('variant 为 tool 时应渲染工具页面骨架', () => {
-      const { container } = render(<PageSkeleton variant="tool" />);
-
-      // tool 骨架屏包含标题、输入区、控制栏 3 个按钮、结果区
       const skeletons = container.querySelectorAll('.animate-pulse');
       expect(skeletons.length).toBeGreaterThan(0);
     });
   });
 
   describe('布局结构测试', () => {
-    it('dashboard 骨架屏应使用 grid 布局', () => {
-      const { container } = render(<PageSkeleton variant="dashboard" />);
-      const gridContainer = container.firstChild as HTMLElement;
-
-      expect(gridContainer).toHaveClass('grid');
-    });
-
-    it('tool 骨架屏应有内边距', () => {
-      const { container } = render(<PageSkeleton variant="tool" />);
+    it('工具骨架屏应有内边距', () => {
+      const { container } = render(<PageSkeleton />);
       const toolContainer = container.firstChild as HTMLElement;
 
       expect(toolContainer).toHaveClass('p-5');
@@ -46,16 +22,8 @@ describe('PageSkeleton 组件', () => {
   });
 
   describe('骨架屏元素测试', () => {
-    it('dashboard 骨架屏应包含圆角和边框样式', () => {
-      const { container } = render(<PageSkeleton variant="dashboard" />);
-
-      // 获取第一个卡片容器
-      const card = container.querySelector('.rounded-xl.border');
-      expect(card).toBeInTheDocument();
-    });
-
-    it('tool 骨架屏应包含动画脉冲效果', () => {
-      const { container } = render(<PageSkeleton variant="tool" />);
+    it('工具骨架屏应包含动画脉冲效果', () => {
+      const { container } = render(<PageSkeleton />);
 
       const skeletons = container.querySelectorAll('.animate-pulse');
       expect(skeletons.length).toBeGreaterThan(0);

src/components/__tests__/RouterContainer.test.tsx

@@ -6,12 +6,10 @@ import type { PageType } from '@/types/storage';
 import React from 'react';
 
 const mockRouterValue = {
-  currentPage: 'dashboard' as PageType,
-  visiblePages: ['dashboard', 'timestamp'] as PageType[],
+  currentPage: 'timestamp' as PageType,
+  visiblePages: ['timestamp', 'jwt'] as PageType[],
   pageOrder: ['timestamp'] as PageType[],
   navigateTo: vi.fn(),
-  syncNavigation: vi.fn(),
-  goHome: vi.fn(),
   setVisiblePages: vi.fn(),
   setPageOrder: vi.fn(),
   recentlyUsedTools: [] as PageType[],
@@ -34,21 +32,14 @@ describe('RouterContainer 组件', () => {
 
   describe('渲染测试', () => {
     it('mount 后应直接渲染页面结构（不等待 storage 加载）', () => {
-      mockRouterValue.currentPage = 'dashboard';
+      mockRouterValue.currentPage = 'timestamp';
       const { container } = renderWithProvider(<RouterContainer />);
-      expect(container.querySelector('.page-transition-dashboard')).toBeInTheDocument();
+      expect(container.querySelector('.page-transition-enter')).toBeInTheDocument();
     });
   });
 
   describe('动画类测试', () => {
-    it('在 dashboard 页面应应用 dashboard 动画类', () => {
-      mockRouterValue.currentPage = 'dashboard';
-      renderWithProvider(<RouterContainer />);
-      const box = document.querySelector('.page-transition-dashboard');
-      expect(box).toBeInTheDocument();
-    });
-
-    it('在非 dashboard 页面应应用 enter 动画类', () => {
+    it('应应用 enter 动画类', () => {
       mockRouterValue.currentPage = 'timestamp';
       renderWithProvider(<RouterContainer />);
       const box = document.querySelector('.page-transition-enter');
@@ -60,7 +51,7 @@ describe('RouterContainer 组件', () => {
     it('currentPage 变化时应更新', () => {
       const { rerender } = renderWithProvider(<RouterContainer />);
 
-      mockRouterValue.currentPage = 'timestamp';
+      mockRouterValue.currentPage = 'jwt';
       rerender(<RouterProvider>{<RouterContainer />}</RouterProvider>);
 
       const box = document.querySelector('.page-transition-enter');
@@ -70,11 +61,10 @@ describe('RouterContainer 组件', () => {
 
   describe('页面级错误隔离', () => {
     it('PageErrorBoundary 应包裹页面内容', () => {
-      mockRouterValue.currentPage = 'dashboard';
+      mockRouterValue.currentPage = 'timestamp';
       const { container } = renderWithProvider(<RouterContainer />);
 
-      // 验证 RouterContainer 的 Box 结构存在
-      const routerBox = container.querySelector('.page-transition-dashboard');
+      const routerBox = container.querySelector('.page-transition-enter');
       expect(routerBox).toBeInTheDocument();
     });
   });