Add discovery search history with auto-save, fix timeout causing search failure

- Save every search result to DB for later review
- Add '搜索历史' tab with timeline view, load/delete records
- Raise discovery search timeout from 30s to 120s (Bing Puppeteer needs ~40s)
- Reduce search queries from 4 to 3 for faster response
- New model: DiscoveryRecord (user_id, product, market, companies JSON)
- API: POST/GET/DELETE /api/v1/discovery/records
- Migration: discovery_records table

user-frontend/src/api/index.js

@@ -71,9 +71,13 @@ export function generateMarketing(data) { return http.post('/marketing/generate'
 export function getKeywords(data) { return http.post('/marketing/keywords', data) }
 export function competitorAnalysis(data) { return http.post('/marketing/competitor-analysis', data) }
 
-export function discoverySearch(data) { return http.post('/discovery/search', data) }
-export function discoveryAnalyze(data) { return http.post('/discovery/analyze', data) }
-export function discoveryOutreach(data) { return http.post('/discovery/outreach', data) }
+export function discoverySearch(data) { return http.post('/discovery/search', data, { timeout: 120000 }) }
+export function discoveryAnalyze(data) { return http.post('/discovery/analyze', data, { timeout: 60000 }) }
+export function discoveryOutreach(data) { return http.post('/discovery/outreach', data, { timeout: 60000 }) }
+export function saveDiscoveryRecord(data) { return http.post('/discovery/records', data) }
+export function listDiscoveryRecords(params) { return http.get('/discovery/records', { params }) }
+export function getDiscoveryRecord(id) { return http.get(`/discovery/records/${id}`) }
+export function deleteDiscoveryRecord(id) { return http.delete(`/discovery/records/${id}`) }
 
 export function getFollowupStats() { return http.get('/followup/stats') }
 export function getFollowupPending() { return http.get('/followup/pending') }

user-frontend/src/views/Discovery.vue

@@ -1,6 +1,6 @@
 <template>
   <div>
-    <el-tabs v-model="tab">
+    <el-tabs v-model="tab" @tab-change="onTabChange">
       <el-tab-pane label="客户挖掘" name="search">
         <el-card shadow="never">
           <el-form :model="form" label-width="100">
@@ -58,6 +58,33 @@
           <el-empty v-if="!loading && !results.length && searched" description="未找到匹配客户" :image-size="60" />
         </el-card>
       </el-tab-pane>
+      <el-tab-pane label="搜索历史" name="history">
+        <el-card shadow="never">
+          <div v-if="historyLoading" style="text-align:center;padding:40px">
+            <el-icon class="is-loading" :size="24"><Loading /></el-icon>
+          </div>
+          <div v-else-if="history.length">
+            <el-timeline>
+              <el-timeline-item v-for="h in history" :key="h.id" :timestamp="formatTime(h.created_at)" placement="top">
+                <el-card shadow="hover" style="cursor:pointer" @click="loadHistory(h)">
+                  <div style="display:flex;justify-content:space-between;align-items:center">
+                    <div>
+                      <strong>{{ h.product }}</strong>
+                      <el-tag v-if="h.market" size="small" style="margin-left:8px">{{ h.market }}</el-tag>
+                    </div>
+                    <el-button size="small" type="danger" link @click.stop="deleteRecord(h.id)">删除</el-button>
+                  </div>
+                  <div style="color:#999;font-size:12px;margin-top:4px">{{ h.companies?.length || 0 }} 条结果</div>
+                </el-card>
+              </el-timeline-item>
+            </el-timeline>
+            <div v-if="hasMore" style="text-align:center;margin-top:16px">
+              <el-button :loading="historyLoadingMore" @click="loadMoreHistory">加载更多</el-button>
+            </div>
+          </div>
+          <el-empty v-else description="暂无搜索历史" :image-size="60" />
+        </el-card>
+      </el-tab-pane>
       <el-tab-pane label="开发信生成" name="outreach">
         <el-card shadow="never">
           <el-form :model="outForm" label-width="100">
@@ -83,14 +110,18 @@
 
 <script setup>
 import { ref } from 'vue'
-import { discoverySearch, discoveryOutreach, discoveryAnalyze, createCustomer } from '@/api'
-import { ElMessage } from 'element-plus'
+import {
+  discoverySearch, discoveryOutreach, discoveryAnalyze, createCustomer,
+  saveDiscoveryRecord, listDiscoveryRecords, getDiscoveryRecord, deleteDiscoveryRecord,
+} from '@/api'
+import { ElMessage, ElMessageBox } from 'element-plus'
 
 const tab = ref('search')
 const loading = ref(false)
 const searched = ref(false)
 const results = ref([])
 const provider = ref('')
+const lastSearch = ref({ product: '', market: '' })
 
 function openUrl(url) { window.open(url, '_blank') }
 const form = ref({ product: '', market: '' })
@@ -98,21 +129,95 @@ const outForm = ref({ company: '', product: '', channel: 'email' })
 const outLoading = ref(false)
 const outreachResult = ref('')
 
+const history = ref([])
+const historyLoading = ref(false)
+const historyLoadingMore = ref(false)
+const historyPage = ref(1)
+const hasMore = ref(false)
+
 function scoreType(s) { if (s >= 80) return 'success'; if (s >= 60) return 'warning'; return 'info' }
 
+function formatTime(iso) {
+  if (!iso) return ''
+  const d = new Date(iso)
+  return `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,'0')}-${String(d.getDate()).padStart(2,'0')} ${String(d.getHours()).padStart(2,'0')}:${String(d.getMinutes()).padStart(2,'0')}`
+}
+
+async function fetchHistory(page = 1, append = false) {
+  try {
+    if (!append) historyLoading.value = true
+    else historyLoadingMore.value = true
+    const res = await listDiscoveryRecords({ page, size: 20 })
+    const d = res.data || res
+    const items = d.items || d || []
+    if (append) history.value.push(...items)
+    else history.value = items
+    hasMore.value = items.length >= 20
+    historyPage.value = page
+  } catch { /* ignore */ }
+  finally {
+    historyLoading.value = false
+    historyLoadingMore.value = false
+  }
+}
+
+async function loadHistory(h) {
+  try {
+    const res = await getDiscoveryRecord(h.id)
+    const d = res.data || res
+    results.value = (d.companies || []).map(r => ({ ...r, _contactDetail: null, _analyzing: false }))
+    provider.value = 'history'
+    form.value.product = d.product
+    form.value.market = d.market
+    searched.value = true
+    tab.value = 'search'
+  } catch { ElMessage.error('加载失败') }
+}
+
+async function deleteRecord(id) {
+  try {
+    await ElMessageBox.confirm('确定删除该搜索记录？', '提示')
+    await deleteDiscoveryRecord(id)
+    history.value = history.value.filter(h => h.id !== id)
+    ElMessage.success('已删除')
+  } catch { /* cancel */ }
+}
+
+function loadMoreHistory() {
+  fetchHistory(historyPage.value + 1, true)
+}
+
+function onTabChange(name) {
+  if (name === 'history') fetchHistory()
+}
+
 async function search() {
   if (!form.value.product) { ElMessage.warning('请输入产品'); return }
   loading.value = true
   searched.value = true
+  lastSearch.value = { product: form.value.product, market: form.value.market }
   try {
     const res = await discoverySearch({
       product_description: form.value.product,
       target_market: form.value.market || 'US',
     })
     const d = res.data || res
-    results.value = (d.companies || d.items || d.results || d || []).map(r => ({ ...r, _contactDetail: null, _analyzing: false }))
+    const companies = d.companies || d.items || d.results || d || []
+    results.value = companies.map(r => ({ ...r, _contactDetail: null, _analyzing: false }))
     provider.value = d.provider || ''
-  } catch { ElMessage.error('挖掘失败') }
+
+    saveDiscoveryRecord({
+      product: form.value.product,
+      market: form.value.market || 'US',
+      companies: companies.map(r => ({
+        name: r.name, description: r.description, country: r.country,
+        match_score: r.match_score, contact: r.contact, source: r.source,
+      })),
+    }).catch(() => {})
+  } catch (e) {
+    const msg = e?.detail || e?.message || '挖掘失败（超时或服务错误）'
+    ElMessage.error(msg)
+  }
   finally { loading.value = false }
 }