feat: 添加投标信息按日期范围更新功能及AI推荐持久化

添加按日期范围更新投标信息的功能，支持日期范围选择和数据更新
实现AI推荐结果的持久化存储和加载功能
优化日期范围选择器的本地存储功能

frontend/src/components/Dashboard.vue

@@ -56,6 +56,10 @@
         />
         <el-button type="primary" @click="setLast3Days">3天</el-button>
         <el-button type="primary" @click="setLast7Days">7天</el-button>
+        <el-button type="success" :loading="updating" @click="updateBidsByDateRange">
+          <el-icon style="margin-right: 5px"><Refresh /></el-icon>
+          更新
+        </el-button>
         <el-select
           v-model="selectedKeywords"
           multiple
@@ -107,14 +111,33 @@ const props = defineProps<Props>()
 const emit = defineEmits<{
   crawl: []
   refresh: []
+  updateBids: [startDate: string, endDate?: string]
 }>()
 
 const selectedKeywords = ref<string[]>([])
 const dateRange = ref<[string, string] | null>(null)
 const crawling = ref(false)
+const updating = ref(false)
 const highPriorityCollapsed = ref(false)
 const isInitialized = ref(false)
 
+// 从 localStorage 加载保存的日期范围
+const loadSavedDateRange = () => {
+  const saved = localStorage.getItem('dashboard_dateRange')
+  if (saved) {
+    try {
+      dateRange.value = JSON.parse(saved)
+    } catch (e) {
+      console.error('Failed to parse saved date range:', e)
+    }
+  }
+}
+
+// 监听日期范围变化并保存到 localStorage
+watch(dateRange, (newDateRange) => {
+  localStorage.setItem('dashboard_dateRange', JSON.stringify(newDateRange))
+}, { deep: true })
+
 // 切换 High Priority Bids 的折叠状态
 const toggleHighPriority = () => {
   highPriorityCollapsed.value = !highPriorityCollapsed.value
@@ -274,6 +297,36 @@ const setLast7Days = () => {
   // 只在手动点击按钮时显示提示，初始化时不显示
 }
 
+// 根据日期范围更新投标信息
+const updateBidsByDateRange = async () => {
+  if (!dateRange.value || dateRange.value.length !== 2) {
+    ElMessage.warning('请先选择日期范围')
+    return
+  }
+
+  updating.value = true
+  try {
+    const [startDate, endDate] = dateRange.value
+
+    // 检查 endDate 是否是今天
+    const today = new Date()
+    const todayStr = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, '0')}-${String(today.getDate()).padStart(2, '0')}`
+
+    // 如果 endDate 是今天，则不传递 endDate 参数（不限制截止时间）
+    if (endDate === todayStr) {
+      emit('updateBids', startDate)
+    } else {
+      emit('updateBids', startDate, endDate)
+    }
+
+    ElMessage.success('更新成功')
+  } catch (error) {
+    ElMessage.error('更新失败')
+  } finally {
+    updating.value = false
+  }
+}
+
 const handleCrawl = async () => {
   if (props.isCrawling) {
     ElMessage.warning('Crawl is already running')
@@ -291,11 +344,14 @@ const handleCrawl = async () => {
   }
 }
 
-// 初始化时加载保存的关键字
+// 初始化时加载保存的关键字和日期范围
 loadSavedKeywords()
+loadSavedDateRange()
 
-// 初始化时设置默认日期范围为最近3天
-setLast3Days()
+// 如果没有保存的日期范围，则设置默认为最近3天
+if (!dateRange.value) {
+  setLast3Days()
+}
 </script>
 
 <style scoped>