feat: 添加Tailwind CSS支持并修复URL拼接问题

添加Tailwind CSS及相关配置
修复多个爬虫服务中的URL拼接问题，避免双斜杠
调整前端导航菜单项顺序

frontend/src/App.vue

@@ -4,18 +4,19 @@
       <div class="logo">投标信息一览</div>
       <el-menu active-text-color="#ffd04b" background-color="#545c64" class="el-menu-vertical-demo" default-active="1"
         text-color="#fff" @select="handleSelect">
+        
         <el-menu-item index="1">
-          <el-icon>
-            <DataBoard />
-          </el-icon>
-          <span>Dashboard</span>
-        </el-menu-item>
-        <el-menu-item index="2">
           <el-icon>
             <MagicStick />
           </el-icon>
           <span>Dashboard AI</span>
         </el-menu-item>
+        <el-menu-item index="2">
+          <el-icon>
+            <DataBoard />
+          </el-icon>
+          <span>Dashboard</span>
+        </el-menu-item>
         <el-menu-item index="3">
           <el-icon>
             <Document />
@@ -43,8 +44,8 @@
       </el-header>
 
       <el-main>
-        <DashboardAI v-if="activeIndex === '2'" :bids="bids" :high-priority-bids="highPriorityBids" />
-        <Dashboard v-if="activeIndex === '1'" :today-bids="todayBids" :high-priority-bids="highPriorityBids"
+        <DashboardAI v-if="activeIndex === '1'" :bids="bids" :high-priority-bids="highPriorityBids" />
+        <Dashboard v-if="activeIndex === '2'" :today-bids="todayBids" :high-priority-bids="highPriorityBids"
           :keywords="keywords" :loading="loading" :is-crawling="isCrawling" @refresh="fetchData"
           @update-bids="updateBidsByDateRange" />
 

frontend/src/style.css

@@ -1,3 +1,5 @@
+@import "tailwindcss";
+
 :root {
   font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
   line-height: 1.5;