feat(app): 初始化应用路由与基础样式- 添加 about 页面并实现页面间导航

- 更新全局样式，设置背景色与文字颜色
-优化 Header 组件，美化窗口控制按钮
- 引入持久化存储工具类
- 调整 Tauri 配置，设置构建路径与窗口最小尺寸- 替换 SVG 图标文件为 sprite 形式

src/lib/components/layout/Header.svelte

@@ -1,48 +1,40 @@
 <script lang="ts">
 	import { getCurrentWindow } from '@tauri-apps/api/window';
-	import {onMount} from 'svelte';
+
 
 	const win = getCurrentWindow();
 
-	let isMax = false;
-
-
 	const minimize = () => win.minimize();
 	const closeWindow = () => win.close();
 	const maximize = () => win.toggleMaximize();
 
-
-	onMount(async () => {
-		// 1. 获取初始状态
-		isMax = await win.isMaximized();
-
-		// 2. 使用 onResized 更稳定（而不是 tauri://resize）
-		const unlisten = await win.onResized(async () => {
-			isMax = await win.isMaximized();
-		});
-
-		// 3. 返回清理函数
-		return () => unlisten();
-	});
-
 </script>
 
 <header class="custom-titlebar" data-tauri-drag-region>
 	<div class="app-title" data-tauri-drag-region>
-		🎉 我的Tauri Svelte应用
+
 	</div>
 
 	<div class="window-controls">
-		<button data-tauri-drag-region="false" class="h-btn" on:click={minimize}>最小化</button>
-		<button data-tauri-drag-region="false" class="h-btn" on:click={maximize}>{ isMax?'取消最大化':'最大化'}</button>
-		<button data-tauri-drag-region="false" class="h-btn btn-close" on:click={closeWindow}>关闭</button>
+		<button type="button" aria-label="最小化窗口" data-tauri-drag-region="false" class="h-btn btn-minimize" on:click={minimize}></button>
+		<button
+			type="button"
+			data-tauri-drag-region="false"
+			class="h-btn btn-max"
+			aria-label="最大化窗口"
+			on:click={maximize}></button>
+		<button type="button"
+						data-tauri-drag-region="false"
+						class="h-btn btn-close"
+						aria-label="关闭窗口"
+						on:click={closeWindow}></button>
 	</div>
 </header>
 
 <style>
     .custom-titlebar {
         height: 30px;
-        background-color: #333;
+        background-color: #1f1f1f;
         color: white;
         display: flex;
         justify-content: space-between;
@@ -54,6 +46,54 @@
         z-index: 1000;
     }
 
+    .window-controls {
+        display: flex;
+        gap: 10px;
+    }
 
+    .window-controls button {
+        width: 12px;
+        height: 12px;
+        border-radius: 50%;
+        border: none;
+        cursor: pointer;
+        transition: background-color 0.2s ease, box-shadow 0.2s ease;
+    }
+
+    /* 🟡 最小化按钮 */
+    .window-controls button.btn-minimize {
+        background-color: #febc2e;
+    }
+    .window-controls button.btn-minimize:hover {
+        background-color: #ffca45;
+        box-shadow: 0 0 4px #ffca45;
+    }
+    .window-controls button.btn-minimize:active {
+        background-color: #d9a323;
+    }
+
+    /* 🔴 关闭按钮 */
+    .window-controls button.btn-close {
+        background-color: #ff5f57;
+    }
+    .window-controls button.btn-close:hover {
+        background-color: #ff7b73;
+        box-shadow: 0 0 4px #ff7b73;
+    }
+    .window-controls button.btn-close:active {
+        background-color: #e0463c;
+    }
+
+    /* 🟢 最大化按钮（未最大化状态） */
+    .window-controls button.btn-max {
+        background-color: #28c940;
+    }
+    .window-controls button.btn-max:hover {
+        background-color: #34d058;
+        box-shadow: 0 0 4px #34d058;
+    }
+    .window-controls button.btn-max:active {
+        background-color: #1fae39;
+    }
 
 </style>