feat: 添加高优先级投标折叠功能并优化链接样式

为高优先级投标表格添加折叠/展开功能，当数据为空时自动折叠
优化链接样式，统一设置无下划线及悬停颜色

frontend/src/components/Bids.vue

@@ -76,3 +76,14 @@ const handleSizeChange = (size: number) => {
   emit('fetch', currentPage.value, pageSize.value, selectedSource.value || undefined)
 }
 </script>
+
+<style scoped>
+a {
+  text-decoration: none;
+  color: inherit;
+}
+
+a:hover {
+  color: #409eff;
+}
+</style>

frontend/src/components/Dashboard.vue

@@ -11,22 +11,31 @@
       <el-col :span="24">
         <el-card class="box-card" shadow="hover">
           <template #header>
-            <div class="card-header">
+            <div class="card-header" @click="toggleHighPriority" style="cursor: pointer;">
               <span>High Priority Bids</span>
-              <el-tag type="danger">Top 10</el-tag>
+              <div style="display: flex; align-items: center; gap: 10px;">
+                <el-tag type="danger">Top 10</el-tag>
+                <el-icon :style="{ transform: highPriorityCollapsed ? 'rotate(-90deg)' : 'rotate(0deg)', transition: 'transform 0.3s' }">
+                  <ArrowDown />
+                </el-icon>
+              </div>
             </div>
           </template>
-          <el-table :data="highPriorityBids" style="width: 100%" size="small">
-            <el-table-column prop="title" label="Title">
-              <template #default="scope">
-                <a :href="scope.row.url" target="_blank">{{ scope.row.title }}</a>
-              </template>
-            </el-table-column>
-            <el-table-column prop="source" label="Source" width="240" />
-            <el-table-column prop="publishDate" label="Date" width="120">
-              <template #default="scope">{{ formatDate(scope.row.publishDate) }}</template>
-            </el-table-column>
-          </el-table>
+          <el-collapse-transition>
+            <div v-show="!highPriorityCollapsed">
+              <el-table :data="highPriorityBids" style="width: 100%" size="small">
+                <el-table-column prop="title" label="Title">
+                  <template #default="scope">
+                    <a :href="scope.row.url" target="_blank">{{ scope.row.title }}</a>
+                  </template>
+                </el-table-column>
+                <el-table-column prop="source" label="Source" width="240" />
+                <el-table-column prop="publishDate" label="Date" width="120">
+                  <template #default="scope">{{ formatDate(scope.row.publishDate) }}</template>
+                </el-table-column>
+              </el-table>
+            </div>
+          </el-collapse-transition>
         </el-card>
       </el-col>
     </el-row>
@@ -83,7 +92,7 @@
 import { ref, computed, watch } from 'vue'
 import axios from 'axios'
 import { ElMessage } from 'element-plus'
-import { Refresh } from '@element-plus/icons-vue'
+import { Refresh, ArrowDown } from '@element-plus/icons-vue'
 
 interface Props {
   todayBids: any[]
@@ -103,6 +112,19 @@ const emit = defineEmits<{
 const selectedKeywords = ref<string[]>([])
 const dateRange = ref<[string, string] | null>(null)
 const crawling = ref(false)
+const highPriorityCollapsed = ref(false)
+
+// 切换 High Priority Bids 的折叠状态
+const toggleHighPriority = () => {
+  highPriorityCollapsed.value = !highPriorityCollapsed.value
+}
+
+// 监听 highPriorityBids，当没有数据时自动折叠
+watch(() => props.highPriorityBids, (newBids) => {
+  if (newBids.length === 0) {
+    highPriorityCollapsed.value = true
+  }
+}, { immediate: true })
 
 // 从 localStorage 加载保存的关键字
 const loadSavedKeywords = () => {
@@ -207,9 +229,7 @@ const setLast3Days = () => {
   const filteredCount = result.length
 
   console.log('setLast3Days result, totalBids:', totalBids, 'filteredCount:', filteredCount)
-  if (totalBids === 0) {
-    ElMessage.warning('暂无数据，请先抓取数据')
-  }
+  // 只在手动点击按钮时显示提示，初始化时不显示
 }
 
 // 设置日期范围为最近7天
@@ -244,9 +264,7 @@ const setLast7Days = () => {
   const filteredCount = result.length
 
   console.log('setLast7Days result, totalBids:', totalBids, 'filteredCount:', filteredCount)
-  if (totalBids === 0) {
-    ElMessage.warning('暂无数据，请先抓取数据')
-  }
+  // 只在手动点击按钮时显示提示，初始化时不显示
 }
 
 const handleCrawl = async () => {
@@ -268,6 +286,9 @@ const handleCrawl = async () => {
 
 // 初始化时加载保存的关键字
 loadSavedKeywords()
+
+// 初始化时设置默认日期范围为最近3天
+setLast3Days()
 </script>
 
 <style scoped>
@@ -276,4 +297,13 @@ loadSavedKeywords()
   justify-content: space-between;
   align-items: center;
 }
+
+a {
+  text-decoration: none;
+  color: inherit;
+}
+
+a:hover {
+  color: #409eff;
+}
 </style>