fix: use backend API for issuing authority search instead of hardcoded list

- remove hardcoded 5-authority list, fetch from backend API on mount
- onSearchInput now calls getIssuingAuthorities(keyword) API
  instead of local substring filtering on hardcoded data
- loadAuthorities() fetches top 50 authorities for button display

src/components/FilterPanel.vue

@@ -89,6 +89,7 @@
 
 <script setup lang="ts">
 import { ref, onMounted, computed, watch } from 'vue'
+import { getIssuingAuthorities } from '@/api/retrieval'
 
 interface Authority {
   shortName: string
@@ -96,45 +97,37 @@ interface Authority {
   count: number
 }
 
-// 写死的发布单位列表
-const HARD_CODED_AUTHORITIES: string[] = [
-
-  '中华人民共和国住房和城乡建设部',
-  '中华人民共和国交通运输部',
-  '中华人民共和国建设部',
-  '中华人民共和国国家质量监督检验检疫总局',
-  '中国国家标准化管理委员会',
-]
-
 const docTypes = ['全部', '法规制度', '技术标准', '操作指南', '通知公告', '工作报告']
 
-// 初始化所有发布单位
-const allAuthorities = ref<Authority[]>(
-  HARD_CODED_AUTHORITIES.map((name) => ({ shortName: name, fullName: name, count: 0 }))
-)
+// 所有发布单位（从后端 API 获取）
+const allAuthorities = ref<Authority[]>([])
+const authoritiesLoading = ref(false)
 
-// 前5发布单位（用于按钮展示）
-const topAuthorities = computed(() => allAuthorities.value.slice(0, 5))
-
-// 本地过滤发布单位（替代原来的 API 请求）
-function filterAuthorities(keyword: string) {
-  const kw = keyword.trim()
-  if (!kw) {
-    allAuthorities.value = HARD_CODED_AUTHORITIES.map((name) => ({
-      shortName: name,
-      fullName: name,
-      count: 0,
+// 加载全部发布单位（无关键词，取前50个）
+async function loadAuthorities(keyword = '') {
+  authoritiesLoading.value = true
+  try {
+    const res = await getIssuingAuthorities(keyword)
+    const items = (res.data?.authorities || []) as Array<{ full_name: string; count: number }>
+    allAuthorities.value = items.slice(0, 50).map((a) => ({
+      shortName: a.full_name.length > 12 ? a.full_name.substring(0, 12) + '…' : a.full_name,
+      fullName: a.full_name,
+      count: a.count,
     }))
-    return
+  } catch (e) {
+    console.warn('[FilterPanel] 加载发布单位失败:', e)
+    allAuthorities.value = []
+  } finally {
+    authoritiesLoading.value = false
   }
-  allAuthorities.value = HARD_CODED_AUTHORITIES.filter((name) => name.includes(kw)).map(
-    (name) => ({ shortName: name, fullName: name, count: 0 })
-  )
 }
 
-// 页面加载时初始化发布单位
+// 前5发布单位（用于按钮展示）
+const topAuthorities = computed(() => allAuthorities.value.slice(0, 5))
+
+// 页面加载时获取发布单位列表
 onMounted(() => {
-  filterAuthorities('')
+  loadAuthorities('')
 })
 
 const props = defineProps<{
@@ -205,17 +198,31 @@ function onSearchInput(val: string) {
   hasSearched.value = val.trim() !== ''
   if (debounceTimer) clearTimeout(debounceTimer)
   debounceTimer = setTimeout(() => {
-    if (!val.trim()) {
+    const kw = val.trim()
+    if (!kw) {
       searchResults.value = []
       return
     }
-    // 本地搜索
-    searchResults.value = allAuthorities.value.filter((a) =>
-      a.fullName.includes(val.trim()) || a.shortName.includes(val.trim())
-    )
+    // 调用后端 API 搜索发布单位
+    loadSearchResults(kw)
   }, 300)
 }
 
+async function loadSearchResults(keyword: string) {
+  try {
+    const res = await getIssuingAuthorities(keyword)
+    const items = (res.data?.authorities || []) as Array<{ full_name: string; count: number }>
+    searchResults.value = items.slice(0, 50).map((a) => ({
+      shortName: a.full_name.length > 12 ? a.full_name.substring(0, 12) + '…' : a.full_name,
+      fullName: a.full_name,
+      count: a.count,
+    }))
+  } catch (e) {
+    console.warn('[FilterPanel] 搜索发布单位失败:', e)
+    searchResults.value = []
+  }
+}
+
 function onDateRangeChange(val: [string, string] | null) {
   emit('update:dateRange', val)
   emitChange(undefined, undefined, val)