style: 替换网站logo为svg矢量图并更新导航栏logo图标

替换了旧的png格式logo为全新设计的svg购物车代码主题logo，同时更新侧边栏和导航栏的logo渲染样式，统一品牌视觉效果

src/assets/logo/logo.svg

@@ -0,0 +1,33 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64">
+  <defs>
+    <linearGradient id="lg" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#38bdf8"/>
+      <stop offset="55%" stop-color="#0ea5e9"/>
+      <stop offset="100%" stop-color="#0284c7"/>
+    </linearGradient>
+  </defs>
+
+  <!-- 购物车主体：车身 + 轮子 -->
+  <g fill="none" stroke="url(#lg)" stroke-width="3.5" stroke-linecap="round" stroke-linejoin="round">
+    <!-- 车把：从左上斜向右下，末端带一个代码尖括号 < -->
+    <path d="M6 12 L16 12 L22 38 L46 38"/>
+    <!-- 车篮 -->
+    <path d="M16 12 L20 30 L48 30"/>
+    <!-- 车轮 -->
+    <circle cx="26" cy="46" r="4" fill="url(#lg)" stroke="none"/>
+    <circle cx="44" cy="46" r="4" fill="url(#lg)" stroke="none"/>
+    <!-- 底部横杆 -->
+    <path d="M22 38 L46 38"/>
+  </g>
+
+  <!-- 代码尖括号 </> 叠加在车身上，表达"产品开发" -->
+  <g fill="none" stroke="#f8fafc" stroke-width="2.8" stroke-linecap="round" stroke-linejoin="round" opacity="0.92">
+    <!-- 左尖括号 < -->
+    <path d="M32 18 L26 24 L32 30"/>
+    <!-- 斜杠 / -->
+    <path d="M38 17 L34 31"/>
+  </g>
+
+  <!-- 右上角一个小圆点，象征"互联网 / 在线" -->
+  <circle cx="54" cy="14" r="3" fill="url(#lg)"/>
+</svg>

src/layout/components/Navbar.vue

@@ -46,8 +46,16 @@
     <div :class="[role !== 3 ? 'navTitle' : 'TnavTitle']">
       <div class="logo-area">
         <svg class="logo-icon" width="28" height="28" viewBox="0 0 24 24" fill="none">
-          <path d="M12 2L2 7l10 5 10-5-10-5z" stroke="#00aaff" stroke-width="1.5" fill="rgba(0,170,255,0.15)"/>
+          <!-- 购物车主体（车身 + 车把）-->
-          <path d="M2 17l10 5 10-5M2 12l10 5 10-5" stroke="#00aaff" stroke-width="1.5" opacity="0.6"/>
+          <path d="M3 3h2l2.2 12h10.5l2.3-8H6" stroke="#00aaff" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" fill="rgba(0,170,255,0.12)"/>
+          <!-- 代码左尖括号 < 叠加在车身 = 产品开发 -->
+          <path d="M10 7.5L7.8 10l2.2 2.5" stroke="#00aaff" stroke-width="1.3" stroke-linecap="round" stroke-linejoin="round" opacity="0.9"/>
+          <!-- 代码右尖括号 > 叠加在车身 = 产品开发 -->
+          <path d="M17 7.5L19.2 10l-2.2 2.5" stroke="#00aaff" stroke-width="1.3" stroke-linecap="round" stroke-linejoin="round" opacity="0.9"/>
+          <!-- 左车轮 -->
+          <circle cx="8" cy="18.5" r="1.5" stroke="#00aaff" stroke-width="1.4"/>
+          <!-- 右车轮 -->
+          <circle cx="17" cy="18.5" r="1.5" stroke="#00aaff" stroke-width="1.4"/>
         </svg>
         <span class="nacber-name" v-if="role !== 3">电商互联网产品开发实训系统</span>
         <span class="nacber-name" v-else>互联网产品开发实训系统</span>
@@ -684,10 +692,10 @@ onMounted(() => {
       .logo-icon {
         filter: none;
 
-        path {
+        path, circle {
           stroke: #ffffff;
-          &:first-child { fill: rgba(255, 255, 255, 0.12); }
         }
+        path:first-child { fill: rgba(255, 255, 255, 0.12); }
       }
 
       .nacber-name {

src/layout/components/Sidebar/Logo.vue

@@ -15,7 +15,7 @@
 
 <script setup>
 import variables from '@/assets/styles/variables.module.scss'
-import logo from '@/assets/logo/logo.png'
+import logo from '@/assets/logo/logo.svg'
 import useSettingsStore from '@/store/modules/settings'
 
 defineProps({