feat(search): 筛选/排序改为图标下拉 + 结果数左对齐 + 最近搜索历史

1) 快捷筛选与排序由横向标签改为 🎚️/↕️ 图标按钮（表格右上角靠右），
点击弹出下拉菜单，选中项高亮带 ✓；2) 「共找到 N 个包」移入表格工具栏
最左侧，与表格左对齐；3) 搜索框下方展示最近 5 条搜索历史
(localStorage 持久化)，回车/点搜索按钮记录，点历史 chip 直接检索，
可一键清除。点击外部自动关闭下拉。

frontend/src/views/SearchView.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { ref, computed, watch, onMounted } from 'vue'
+import { ref, computed, watch, onMounted, onUnmounted } from 'vue'
 import { useRoute } from 'vue-router'
 import PackageDrawer from '../components/PackageDrawer.vue'
 import CleanDialog from '../components/CleanDialog.vue'
@@ -15,12 +15,62 @@ const statusFilter = ref('all') // all | warn | ok | ignored | broken
 const sortMode = ref('default') // default | versions-desc | size-desc
 let debounceTimer = null
 
+// —— 搜索历史（localStorage 最近 5 条，提交时记录） ——
+const HISTORY_KEY = 'vcm-search-history'
+const searchHistory = ref(JSON.parse(localStorage.getItem(HISTORY_KEY) || '[]'))
+function addHistory(kw) {
+  const k = (kw || '').trim()
+  if (!k) return
+  const h = [k, ...searchHistory.value.filter(x => x !== k)].slice(0, 5)
+  searchHistory.value = h
+  localStorage.setItem(HISTORY_KEY, JSON.stringify(h))
+}
+function submitSearch() {
+  addHistory(keyword.value)
+}
+function useHistory(kw) {
+  keyword.value = kw
+  refreshPackages(kw)
+}
+function clearHistory() {
+  searchHistory.value = []
+  localStorage.removeItem(HISTORY_KEY)
+}
+
+// —— 表格右上角：筛选/排序下拉 ——
+const filterOpen = ref(false)
+const sortOpen = ref(false)
+function toggleFilter() {
+  filterOpen.value = !filterOpen.value
+  sortOpen.value = false
+}
+function toggleSort() {
+  sortOpen.value = !sortOpen.value
+  filterOpen.value = false
+}
+function pickFilter(key) {
+  statusFilter.value = key
+  filterOpen.value = false
+}
+function pickSort(mode) {
+  sortMode.value = mode
+  sortOpen.value = false
+}
+function closeMenus() {
+  filterOpen.value = false
+  sortOpen.value = false
+}
+
 onMounted(() => {
+  document.addEventListener('click', closeMenus)
   // 数据由 App 初始化时统一加载，切换菜单不再重复拉取全量列表（响应大，避免卡顿）
   if (route.query.status && ['all', 'warn', 'ok', 'ignored', 'broken'].includes(route.query.status)) {
     statusFilter.value = route.query.status
   }
 })
+onUnmounted(() => {
+  document.removeEventListener('click', closeMenus)
+})
 
 watch(keyword, () => {
   clearTimeout(debounceTimer)
@@ -88,32 +138,56 @@ async function onCleanConfirmed(res) {
         <input
           v-model="keyword"
           type="text"
-          placeholder="搜索包名…（实时过滤 · 防抖 300ms）"
+          placeholder="搜索包名…（回车搜索 · 实时过滤 · 防抖 300ms）"
           @keyup.esc="keyword = ''"
+          @keyup.enter="submitSearch()"
         />
         <span v-if="keyword" class="s-clear" @click="keyword = ''">✕</span>
-        <button class="s-go">搜索</button>
+        <button class="s-go" @click="submitSearch()">搜索</button>
       </div>
 
-      <div class="filter-row">
+      <!-- 最近搜索（最近 5 条，localStorage 持久化） -->
-        <span class="pill split">快捷筛选</span>
+      <div v-if="searchHistory.length" class="history-row">
-        <span
+        <span class="h-label">🕘 最近搜索</span>
-          v-for="p in pills"
+        <span v-for="h in searchHistory" :key="h" class="h-chip" @click="useHistory(h)">{{ h }}</span>
-          :key="p.key"
+        <span class="h-clear" @click="clearHistory">清除</span>
-          class="pill"
-          :class="{ on: statusFilter === p.key }"
-          @click="statusFilter = p.key"
-        >{{ p.label }}</span>
-        <span class="pill split">排序</span>
-        <span class="pill" :class="{ on: sortMode === 'default' }" @click="sortMode = 'default'">默认</span>
-        <span class="pill" :class="{ on: sortMode === 'versions-desc' }" @click="sortMode = 'versions-desc'">版本数 ↓</span>
-        <span class="pill" :class="{ on: sortMode === 'size-desc' }" @click="sortMode = 'size-desc'">占用大小 ↓</span>
       </div>
     </div>
 
-    <div class="result-note">
+    <!-- 表格工具栏：左侧结果数 + 右侧筛选/排序下拉 -->
-      共找到 <b>{{ filtered.length }}</b> 个包
+    <div class="toolbar">
-      <template v-if="keyword">（关键词「{{ keyword }}」）</template>
+      <div class="tb-count">
+        共找到 <b>{{ filtered.length }}</b> 个包
+        <template v-if="keyword">（关键词「{{ keyword }}」）</template>
+      </div>
+      <div class="tb-actions">
+        <div class="dd">
+          <button class="dd-btn" :class="{ on: filterOpen }" title="快捷筛选" @click.stop="toggleFilter">🎚️</button>
+          <Transition name="dd">
+            <div v-if="filterOpen" class="dd-menu">
+              <div class="dd-title">快捷筛选</div>
+              <div
+                v-for="p in pills"
+                :key="p.key"
+                class="dd-item"
+                :class="{ on: statusFilter === p.key }"
+                @click="pickFilter(p.key)"
+              >{{ p.label }}<span v-if="statusFilter === p.key" class="dd-check">✓</span></div>
+            </div>
+          </Transition>
+        </div>
+        <div class="dd">
+          <button class="dd-btn" :class="{ on: sortOpen }" title="排序" @click.stop="toggleSort">↕️</button>
+          <Transition name="dd">
+            <div v-if="sortOpen" class="dd-menu">
+              <div class="dd-title">排序方式</div>
+              <div class="dd-item" :class="{ on: sortMode === 'default' }" @click="pickSort('default')">默认<span v-if="sortMode === 'default'" class="dd-check">✓</span></div>
+              <div class="dd-item" :class="{ on: sortMode === 'versions-desc' }" @click="pickSort('versions-desc')">版本数 ↓<span v-if="sortMode === 'versions-desc'" class="dd-check">✓</span></div>
+              <div class="dd-item" :class="{ on: sortMode === 'size-desc' }" @click="pickSort('size-desc')">占用大小 ↓<span v-if="sortMode === 'size-desc'" class="dd-check">✓</span></div>
+            </div>
+          </Transition>
+        </div>
+      </div>
     </div>
 
     <div v-if="state.loading" class="loading-tip">⏳ 加载中…</div>
@@ -240,38 +314,101 @@ async function onCleanConfirmed(res) {
   flex-shrink: 0;
 }
 .s-go:hover { transform: translateY(-1px); }
-.filter-row {
+/* 最近搜索（搜索框下方，最近 5 条） */
+.history-row {
   display: flex;
   align-items: center;
-  gap: 9px;
+  gap: 8px;
   flex-wrap: wrap;
-  justify-content: center;
+  margin-top: 14px;
-  margin-top: 18px;
+  width: min(680px, 100%);
 }
-.pill {
+.h-label { font-size: 12px; color: var(--ink-faint); font-weight: 600; }
-  font-size: 12.5px;
+.h-chip {
-  font-weight: 600;
+  font-size: 12px;
-  padding: 8px 17px;
+  color: var(--ink-dim);
-  border-radius: 99px;
-  cursor: pointer;
   background: var(--card);
   border: 1.5px solid var(--line);
-  color: var(--ink-dim);
+  padding: 5px 13px;
-  transition: .16s;
+  border-radius: 99px;
-  font-family: var(--sans);
+  cursor: pointer;
+  transition: .15s;
+  max-width: 220px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
-.pill:hover { border-color: color-mix(in srgb, var(--orange) 60%, transparent); color: var(--orange); }
+.h-chip:hover { border-color: color-mix(in srgb, var(--orange) 60%, transparent); color: var(--orange); }
-.pill.on { background: var(--green); border-color: var(--green); color: #fff; box-shadow: 0 6px 14px -4px rgba(50, 205, 50, .5); }
+.h-clear { font-size: 11.5px; color: var(--ink-faint); cursor: pointer; margin-left: 2px; }
-.pill.split { background: transparent; border: none; color: var(--ink-faint); cursor: default; }
+.h-clear:hover { color: var(--red); }
-.result-note {
+
-  text-align: center;
+/* 表格工具栏：左结果数 + 右筛选/排序下拉 */
+.toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+  margin: 20px 0 12px;
+}
+.tb-count {
   font-family: var(--num);
   font-size: 12.5px;
   color: var(--ink-faint);
-  margin: 22px 0 14px;
   font-weight: 600;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
-.result-note b { color: var(--orange); }
+.tb-count b { color: var(--orange); }
+.tb-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
+.dd { position: relative; }
+.dd-btn {
+  width: 36px;
+  height: 36px;
+  border-radius: 12px;
+  display: grid;
+  place-items: center;
+  font-size: 16px;
+  cursor: pointer;
+  background: var(--card);
+  border: 1.5px solid var(--line);
+  transition: .15s;
+}
+.dd-btn:hover { border-color: color-mix(in srgb, var(--orange) 60%, transparent); }
+.dd-btn.on { background: var(--green); border-color: var(--green); box-shadow: 0 6px 14px -4px rgba(50, 205, 50, .5); }
+.dd-menu {
+  position: absolute;
+  top: calc(100% + 8px);
+  right: 0;
+  min-width: 168px;
+  background: var(--card);
+  border: 1.5px solid var(--line);
+  border-radius: 14px;
+  box-shadow: 0 18px 44px -14px rgba(0, 0, 0, .5);
+  padding: 7px;
+  z-index: 60;
+}
+.dd-title { font-size: 11px; color: var(--ink-faint); font-weight: 700; padding: 6px 10px 4px; letter-spacing: .3px; }
+.dd-item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+  font-size: 12.5px;
+  font-weight: 600;
+  color: var(--ink-dim);
+  padding: 8px 10px;
+  border-radius: 9px;
+  cursor: pointer;
+  transition: .13s;
+}
+.dd-item:hover { background: var(--num-bg); color: var(--ink); }
+.dd-item.on { color: var(--green-deep); background: var(--green-soft); }
+.dd-check { font-weight: 800; }
+.dd-enter-active { transition: transform .16s cubic-bezier(.2, .8, .25, 1), opacity .16s; }
+.dd-leave-active { transition: transform .12s ease-in, opacity .12s; }
+.dd-enter-from, .dd-leave-to { transform: translateY(-6px) scale(.97); opacity: 0; transform-origin: top right; }
 .pkg-name { display: inline-flex; align-items: center; gap: 9px; min-width: 0; }
 .pkg-name .pkg-cell { min-width: 0; }
 .pkg-cell { font-weight: 600; word-break: break-all; }
@@ -286,9 +423,8 @@ async function onCleanConfirmed(res) {
 @media (max-width: 767px) {
   .search-box { height: 48px; }
   .search-box .s-go { display: none; }
-  .filter-row { gap: 7px; }
+  .history-row { width: 100%; }
-  .pill { padding: 7px 13px; font-size: 12px; }
+  .toolbar { margin: 16px 0 10px; }
-  .pill.split { display: none; }
   .vtable { overflow-x: auto; }
   .vtable table { min-width: 640px; }
 }