feat: 全面优化爬虫系统和数据处理能力

- 增强数据重试机制：对数据为0的爬虫自动重试，提高数据完整性
- 优化前端筛选逻辑：改进日期筛选，只限制开始时间，更灵活的数据查看
- 新增最近数据接口：添加 /api/bids/recent 获取30天内最新招标数据
- 改进统计展示：实时显示筛选结果数量，优化用户体验
- 完善日志系统：确保日志目录自动创建，避免启动错误
- 增强独立脚本：使用自定义logger，完善错误处理和程序关闭
- 优化主程序：集成自定义日志服务，统一日志格式
- 扩展npm脚本：新增 web 命令用于构建前端
- 改进大唐爬虫：延长等待时间到60秒，提高页面加载成功率
- 优化数据筛选：今日招标改为使用独立接口，提升性能

frontend/src/App.vue

@@ -188,7 +188,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, reactive, computed, watch, nextTick } from 'vue'
+import { ref, onMounted, reactive, computed, watch } from 'vue'
 import axios from 'axios'
 import { ElMessage } from 'element-plus'
 import { DataBoard, Document, Setting, Refresh } from '@element-plus/icons-vue'
@@ -285,26 +285,22 @@ const setLast3Days = () => {
   
   console.log('setLast3Days called, todayBids:', todayBids.value.length, 'dateRange:', dateRange.value)
   
-  // 直接计算筛选结果并显示提示
+  // 直接计算筛选结果并显示提示（只限制开始时间，不限制结束时间）
   const start = new Date(startDate)
   start.setHours(0, 0, 0, 0)
-  const end = new Date(endDate)
-  end.setHours(23, 59, 59, 999)
   
   let result = todayBids.value
   result = result.filter(bid => {
     if (!bid.publishDate) return false
     const bidDate = new Date(bid.publishDate)
-    return bidDate >= start && bidDate <= end
+    return bidDate >= start
   })
   
   const totalBids = todayBids.value.length
   const filteredCount = result.length
   
   console.log('setLast3Days result, totalBids:', totalBids, 'filteredCount:', filteredCount)
-  if (totalBids > 0) {
-    ElMessage.info(`筛选结果：共 ${filteredCount} 条数据（总共 ${totalBids} 条）`)
-  } else {
+  if (totalBids === 0) {
     ElMessage.warning('暂无数据，请先抓取数据')
   }
 }
@@ -326,26 +322,22 @@ const setLast7Days = () => {
   
   console.log('setLast7Days called, todayBids:', todayBids.value.length, 'dateRange:', dateRange.value)
   
-  // 直接计算筛选结果并显示提示
+  // 直接计算筛选结果并显示提示（只限制开始时间，不限制结束时间）
   const start = new Date(startDate)
   start.setHours(0, 0, 0, 0)
-  const end = new Date(endDate)
-  end.setHours(23, 59, 59, 999)
   
   let result = todayBids.value
   result = result.filter(bid => {
     if (!bid.publishDate) return false
     const bidDate = new Date(bid.publishDate)
-    return bidDate >= start && bidDate <= end
+    return bidDate >= start
   })
   
   const totalBids = todayBids.value.length
   const filteredCount = result.length
   
   console.log('setLast7Days result, totalBids:', totalBids, 'filteredCount:', filteredCount)
-  if (totalBids > 0) {
-    ElMessage.info(`筛选结果：共 ${filteredCount} 条数据（总共 ${totalBids} 条）`)
-  } else {
+  if (totalBids === 0) {
     ElMessage.warning('暂无数据，请先抓取数据')
   }
 }
@@ -368,18 +360,16 @@ const filteredTodayBids = computed(() => {
     })
   }
   
-  // 按日期范围筛选
+  // 按日期范围筛选（只限制开始时间，不限制结束时间）
   if (dateRange.value && dateRange.value.length === 2) {
-    const [startDate, endDate] = dateRange.value
+    const [startDate] = dateRange.value
     result = result.filter(bid => {
       if (!bid.publishDate) return false
       const bidDate = new Date(bid.publishDate)
       const start = new Date(startDate)
-      const end = new Date(endDate)
-      // 设置时间为当天的开始和结束
+      // 设置时间为当天的开始
       start.setHours(0, 0, 0, 0)
-      end.setHours(23, 59, 59, 999)
-      return bidDate >= start && bidDate <= end
+      return bidDate >= start
     })
   }
   
@@ -399,7 +389,7 @@ watch(filteredTodayBids, (newFilteredBids) => {
 const fetchData = async () => {
   loading.value = true
   try {
-    const [bidsRes, highRes, kwRes, sourcesRes, statusRes] = await Promise.all([
+    const [bidsRes, recentRes, highRes, kwRes, sourcesRes, statusRes] = await Promise.all([
       axios.get('/api/bids', {
         params: {
           page: currentPage.value,
@@ -407,6 +397,7 @@ const fetchData = async () => {
           source: selectedSource.value || undefined
         }
       }),
+      axios.get('/api/bids/recent'),
       axios.get('/api/bids/high-priority'),
       axios.get('/api/keywords'),
       axios.get('/api/bids/sources'),
@@ -414,19 +405,11 @@ const fetchData = async () => {
     ])
     bids.value = bidsRes.data.items
     total.value = bidsRes.data.total
+    todayBids.value = recentRes.data
     highPriorityBids.value = highRes.data
     keywords.value = kwRes.data
     sourceOptions.value = sourcesRes.data
     isCrawling.value = statusRes.data.isCrawling
-    
-    // 过滤今天的数据用于 Today's Bids
-    const today = new Date()
-    today.setHours(0, 0, 0, 0)
-    todayBids.value = bidsRes.data.items.filter((bid: any) => {
-      if (!bid.publishDate) return false
-      const bidDate = new Date(bid.publishDate)
-      return bidDate >= today
-    })
   } catch (error) {
     ElMessage.error('Failed to fetch data')
   } finally {