diff --git a/client/lib/screens/inventory/inventory_list_screen.dart b/client/lib/screens/inventory/inventory_list_screen.dart
index a0af7c5..9491ac0 100644
--- a/client/lib/screens/inventory/inventory_list_screen.dart
+++ b/client/lib/screens/inventory/inventory_list_screen.dart
@@ -208,43 +208,43 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
     if (v != null && mounted) _applyStatusFilter(v);
   }
 
-  // ── 工具栏多选 chip（规格/系列/仓库，2026-07-07 从列头漏斗上移） ──
-  Widget _multiChip(String label, List<String> options, Set<String> selected,
-      ValueChanged<Set<String>> onChanged) {
+  // ── 工具栏单选 chip（规格/系列/仓库，2026-08-28 从多选改单选，用户口径） ──
+  // 状态仍存 Set<String>（沿用后端 setSpec/setSeries 列表口径 + 仓库客户端 contains），
+  // 单选即「至多一项」：选中 → {v}，× → {}。
+  Widget _singleChip(String label, List<String> options, Set<String> selected,
+      ValueChanged<Set<String>> onChanged,
+      {String? searchHint}) {
     return Builder(
       builder: (chipCtx) => DsChip(
         label: label,
-        value: selected.isEmpty
-            ? null
-            : selected.length == 1
-                ? selected.first
-                : '${selected.length} 项',
-        onTap: () => _openMultiFilter(chipCtx,
-            options: options, selected: selected, onChanged: onChanged),
+        value: selected.isEmpty ? null : selected.first,
+        onTap: () => _openSingleFilter(chipCtx,
+            options: options,
+            selected: selected,
+            onChanged: onChanged,
+            searchHint: searchHint),
         onClear: () => onChanged({}),
       ),
     );
   }
 
-  // ── 多选菜单（规格/系列/仓库，chip 锚定） ──
-  void _openMultiFilter(
+  // ── 单选菜单（规格/系列可搜索、仓库普通，chip 锚定） ──
+  Future<void> _openSingleFilter(
     BuildContext anchorContext, {
     required List<String> options,
     required Set<String> selected,
     required ValueChanged<Set<String>> onChanged,
-  }) {
-    var cur = Set.of(selected);
-    showDsMultiMenu<String>(
+    String? searchHint, // 非空 → 可搜索单选下拉（规格/系列长名录）
+  }) async {
+    final v = await showDsMenu<String>(
       anchorContext,
-      itemsBuilder: () => [
+      searchHint: searchHint,
+      items: [
         for (final o in options)
-          DsMenuItem(value: o, label: o, selected: cur.contains(o)),
+          DsMenuItem(value: o, label: o, selected: selected.contains(o)),
       ],
-      onToggle: (v) {
-        cur.contains(v) ? cur.remove(v) : cur.add(v);
-        onChanged(Set.of(cur));
-      },
     );
+    if (v != null && mounted) onChanged({v});
   }
 
   // ── 窄屏筛选 sheet（原型移动无列头漏斗 → 详搜钮开底部 sheet）──
@@ -937,21 +937,21 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
                         children: [
                           SizedBox(width: 260, child: searchField),
                           const SizedBox(width: AppDims.sp2),
-                          _multiChip('规格', specOptions, _filterSpec, (v) {
+                          _singleChip('规格', specOptions, _filterSpec, (v) {
                             setState(() => _filterSpec = v);
                             ref
                                 .read(inventoryListProvider.notifier)
                                 .setSpec(v.toList());
-                          }),
+                          }, searchHint: '搜索规格…'),
                           const SizedBox(width: AppDims.sp2),
-                          _multiChip('系列', seriesOptions, _filterSeries, (v) {
+                          _singleChip('系列', seriesOptions, _filterSeries, (v) {
                             setState(() => _filterSeries = v);
                             ref
                                 .read(inventoryListProvider.notifier)
                                 .setSeries(v.toList());
-                          }),
+                          }, searchHint: '搜索系列…'),
                           const SizedBox(width: AppDims.sp2),
-                          _multiChip('仓库', warehouseOptions, _filterWarehouse,
+                          _singleChip('仓库', warehouseOptions, _filterWarehouse,
                               (v) => setState(() => _filterWarehouse = v)),
                           const SizedBox(width: AppDims.sp2),
                           Builder(
diff --git a/client/lib/widgets/ds/ds_menu.dart b/client/lib/widgets/ds/ds_menu.dart
index 145fbb4..053874c 100644
--- a/client/lib/widgets/ds/ds_menu.dart
+++ b/client/lib/widgets/ds/ds_menu.dart
@@ -6,6 +6,7 @@ import 'dart:math' as math;
 import 'package:flutter/material.dart';
 import 'package:lucide_icons_flutter/lucide_icons.dart';
 
+import '../../core/theme/app_tokens.dart';
 import '../../core/theme/context_tokens.dart';
 import '../../core/theme/app_dims.g.dart';
 
@@ -25,28 +26,41 @@ class DsMenuItem<T> {
 }
 
 /// 单选菜单：点击项返回其 value 并关闭；点外部关闭返回 null。
+///
+/// [searchHint] 非空 → 升级为「可搜索单选」下拉（镜像原型 openSearchMenu / .combo-pop，
+/// 照 stock-out 客户筛选写法）：顶部持久搜索框 + 边打边过滤 + 命中高亮 + 底部结果统计，
+/// 点选即返回并关闭。宽度锚定触发器宽（`max(触发器宽, 220)` 固定，对齐原型 openSearchMenu
+/// `w = max(r.width, 220)`）、列表 264 封顶，供规格/系列等长名录单选筛选复用。
 Future<T?> showDsMenu<T>(
   BuildContext anchorContext, {
   required List<DsMenuItem<T>> items,
   double minWidth = 168,
+  String? searchHint,
 }) {
   final rect = _anchorRect(anchorContext);
   return Navigator.of(anchorContext).push<T>(_DsMenuRoute<T>(
     anchorRect: rect,
-    minWidth: minWidth,
-    builder: (ctx) => _DsMenuPanel(
-      children: [
-        for (final it in items)
-          _DsMenuItemTile(
-            item: it,
-            onTap: () => Navigator.of(ctx).pop(it.value),
+    minWidth: searchHint != null ? math.max(minWidth, 220) : minWidth,
+    search: searchHint != null,
+    builder: (ctx) => searchHint != null
+        ? _DsSearchSinglePanel<T>(
+            items: items,
+            hint: searchHint,
+            onPick: (v) => Navigator.of(ctx).pop(v),
+          )
+        : _DsMenuPanel(
+            children: [
+              for (final it in items)
+                _DsMenuItemTile(
+                  item: it,
+                  onTap: () => Navigator.of(ctx).pop(it.value),
+                ),
+            ],
           ),
-      ],
-    ),
   ));
 }
 
-/// 多选菜单（列设置 / 多选筛选）：点击项切换选中、菜单保持打开；点外部关闭。
+/// 多选菜单（列设置）：点击项切换选中、菜单保持打开；点外部关闭。
 /// [itemsBuilder] 每次切换后重建以刷新 ✓ 态；[onToggle] 通知外部改状态。
 Future<void> showDsMultiMenu<T>(
   BuildContext anchorContext, {
@@ -89,10 +103,12 @@ Rect _anchorRect(BuildContext anchorContext) {
 class _DsMenuRoute<T> extends PopupRoute<T> {
   final Rect anchorRect;
   final double minWidth;
+  final bool search;
   final WidgetBuilder builder;
   _DsMenuRoute({
     required this.anchorRect,
     required this.minWidth,
+    this.search = false,
     required this.builder,
   });
 
@@ -109,7 +125,7 @@ class _DsMenuRoute<T> extends PopupRoute<T> {
   Widget buildPage(BuildContext context, Animation<double> animation,
       Animation<double> secondaryAnimation) {
     return CustomSingleChildLayout(
-      delegate: _DsMenuLayout(anchorRect, minWidth),
+      delegate: _DsMenuLayout(anchorRect, minWidth, search),
       child: builder(context),
     );
   }
@@ -118,15 +134,23 @@ class _DsMenuRoute<T> extends PopupRoute<T> {
 class _DsMenuLayout extends SingleChildLayoutDelegate {
   final Rect anchor;
   final double minWidth;
-  _DsMenuLayout(this.anchor, this.minWidth);
+  final bool search;
+  _DsMenuLayout(this.anchor, this.minWidth, this.search);
 
   @override
   BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
-    final maxW = math.max(minWidth, constraints.maxWidth - 16);
+    final avail = constraints.maxWidth - 16;
+    final maxH = math.max(0.0, constraints.maxHeight - 16);
+    if (search) {
+      // 可搜索下拉：宽度锚定触发器宽（对齐原型 openSearchMenu `w = max(r.width, 220)`），
+      // tight 固定，避免 Expanded 搜索框撑满视口。触发器宽 → 弹层宽；窄 pill → 220。
+      final w = math.min(math.max(anchor.width, minWidth), avail);
+      return BoxConstraints(minWidth: w, maxWidth: w, maxHeight: maxH);
+    }
     return BoxConstraints(
-      minWidth: math.min(math.max(anchor.width, minWidth), maxW),
-      maxWidth: maxW,
-      maxHeight: math.max(0, constraints.maxHeight - 16),
+      minWidth: math.min(math.max(anchor.width, minWidth), avail),
+      maxWidth: avail,
+      maxHeight: maxH,
     );
   }
 
@@ -144,7 +168,9 @@ class _DsMenuLayout extends SingleChildLayoutDelegate {
 
   @override
   bool shouldRelayout(_DsMenuLayout old) =>
-      old.anchor != anchor || old.minWidth != minWidth;
+      old.anchor != anchor ||
+      old.minWidth != minWidth ||
+      old.search != search;
 }
 
 /// .menu：surface / border / r-md / sh-2(0 4px 14px shadow) / pad 6。
@@ -224,3 +250,203 @@ class _DsMenuItemTile extends StatelessWidget {
     );
   }
 }
+
+/// 可搜索单选面板（镜像原型 .combo-pop + openSearchMenu，照 stock-out 客户筛选）：
+/// 顶部 .cp-search 持久搜索框 → .cp-list 列表（命中子串高亮、选中项尾部 ✓、点选即返回并关闭）
+/// → .cp-foot 结果统计（匹配 X 条 · 共 N 条）。供工具栏规格/系列等长名录单选筛选复用。
+class _DsSearchSinglePanel<T> extends StatefulWidget {
+  final List<DsMenuItem<T>> items;
+  final ValueChanged<T> onPick;
+  final String hint;
+  const _DsSearchSinglePanel({
+    required this.items,
+    required this.onPick,
+    required this.hint,
+  });
+
+  @override
+  State<_DsSearchSinglePanel<T>> createState() =>
+      _DsSearchSinglePanelState<T>();
+}
+
+class _DsSearchSinglePanelState<T> extends State<_DsSearchSinglePanel<T>> {
+  final _ctrl = TextEditingController();
+  final _focus = FocusNode();
+  String _kw = '';
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance
+        .addPostFrameCallback((_) => _focus.requestFocus());
+  }
+
+  @override
+  void dispose() {
+    _ctrl.dispose();
+    _focus.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final t = context.tokens;
+    final all = widget.items;
+    final q = _kw.trim().toLowerCase();
+    final hits =
+        q.isEmpty ? all : all.where((it) => it.label.toLowerCase().contains(q)).toList();
+    return Material(
+      color: Colors.transparent,
+      child: Container(
+        clipBehavior: Clip.antiAlias,
+        decoration: BoxDecoration(
+          color: t.surface,
+          border: Border.all(color: t.border),
+          borderRadius: BorderRadius.circular(AppDims.rMd),
+          boxShadow: [
+            BoxShadow(
+                color: t.shadow, offset: const Offset(0, 4), blurRadius: 14),
+          ],
+        ),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            // .cp-search
+            Container(
+              padding: const EdgeInsets.fromLTRB(11, 9, 11, 9),
+              decoration: BoxDecoration(
+                border: Border(bottom: BorderSide(color: t.borderSubtle)),
+              ),
+              child: Row(
+                children: [
+                  Icon(LucideIcons.search, size: 14, color: t.faint),
+                  const SizedBox(width: 8),
+                  Expanded(
+                    child: TextField(
+                      controller: _ctrl,
+                      focusNode: _focus,
+                      style: TextStyle(fontSize: AppDims.fsBody, color: t.text),
+                      cursorColor: t.primary,
+                      onChanged: (v) => setState(() => _kw = v),
+                      decoration: InputDecoration(
+                        isCollapsed: true,
+                        contentPadding: EdgeInsets.zero,
+                        border: InputBorder.none,
+                        enabledBorder: InputBorder.none,
+                        focusedBorder: InputBorder.none,
+                        hintText: widget.hint,
+                        hintStyle: TextStyle(
+                            fontSize: AppDims.fsBody, color: t.faint),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+            // .cp-list（overflow auto，max-height:264 → 超出滚动、foot 常驻可见；空 → .cp-empty）
+            ConstrainedBox(
+              constraints: const BoxConstraints(maxHeight: 264),
+              child: hits.isEmpty
+                  ? Padding(
+                      padding: const EdgeInsets.all(20),
+                      child: Text('无匹配结果',
+                          textAlign: TextAlign.center,
+                          style: TextStyle(
+                              fontSize: AppDims.fsSm, color: t.muted)),
+                    )
+                  : ListView.builder(
+                      padding: const EdgeInsets.all(5),
+                      shrinkWrap: true,
+                      itemCount: hits.length,
+                      itemBuilder: (c, i) => _item(t, hits[i]),
+                    ),
+            ),
+            // .cp-foot
+            Container(
+              padding: const EdgeInsets.fromLTRB(12, 7, 12, 7),
+              decoration: BoxDecoration(
+                color: t.bg,
+                border: Border(top: BorderSide(color: t.borderSubtle)),
+              ),
+              child: _foot(t, hits.length, all.length, q.isNotEmpty),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  // .cp-item：点选即回调 onPick（其内 Navigator.pop 关闭菜单）→ 单选。
+  Widget _item(AppTokens t, DsMenuItem<T> it) {
+    final fg = it.selected ? t.primary : t.text;
+    return InkWell(
+      onTap: () => widget.onPick(it.value),
+      hoverColor: t.rowHover,
+      borderRadius: BorderRadius.circular(AppDims.rSm),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
+        child: Row(
+          children: [
+            Expanded(child: _highlight(t, it.label, fg, it.selected)),
+            if (it.selected) ...[
+              const SizedBox(width: 9),
+              Icon(LucideIcons.check, size: 15, color: t.primary),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+
+  // 命中子串高亮（.hl：primary fw700）
+  Widget _highlight(AppTokens t, String name, Color fg, bool sel) {
+    final base = TextStyle(
+        fontSize: AppDims.fsBody,
+        color: fg,
+        fontWeight: sel ? FontWeight.w600 : FontWeight.w400);
+    final kw = _kw.trim();
+    final i =
+        kw.isEmpty ? -1 : name.toLowerCase().indexOf(kw.toLowerCase());
+    if (i < 0) {
+      return Text(name,
+          maxLines: 1, overflow: TextOverflow.ellipsis, style: base);
+    }
+    return RichText(
+      maxLines: 1,
+      overflow: TextOverflow.ellipsis,
+      text: TextSpan(style: base, children: [
+        TextSpan(text: name.substring(0, i)),
+        TextSpan(
+            text: name.substring(i, i + kw.length),
+            style: base.copyWith(
+                color: t.primary, fontWeight: FontWeight.w700)),
+        TextSpan(text: name.substring(i + kw.length)),
+      ]),
+    );
+  }
+
+  // .cp-foot：q 空 → 共 N 条；有关键字 → 匹配 X 条 · 共 N 条。数字 mono 加粗。
+  Widget _foot(AppTokens t, int hits, int total, bool filtered) {
+    final base = TextStyle(fontSize: AppDims.fsXs, color: t.muted);
+    final b = base.copyWith(
+        color: t.text,
+        fontWeight: FontWeight.w600,
+        fontFamily: 'JetBrainsMono');
+    return RichText(
+      text: TextSpan(style: base, children: [
+        if (filtered) ...[
+          const TextSpan(text: '匹配 '),
+          TextSpan(text: '$hits', style: b),
+          const TextSpan(text: ' 条 · 共 '),
+          TextSpan(text: '$total', style: b),
+          const TextSpan(text: ' 条'),
+        ] else ...[
+          const TextSpan(text: '共 '),
+          TextSpan(text: '$total', style: b),
+          const TextSpan(text: ' 条'),
+        ],
+      ]),
+    );
+  }
+}
diff --git a/design/prototype/screens/inventory.html b/design/prototype/screens/inventory.html
index 7688dd0..aef9a40 100644
--- a/design/prototype/screens/inventory.html
+++ b/design/prototype/screens/inventory.html
@@ -126,17 +126,17 @@ const ITEMS=[
 const STATUS=['全部','在售','库存','已售'];
 // 成本价/总价列 = 成本口径，仅管理员可见（非管理员两列隐藏、列设置菜单不出现，2026-07-06）；原型=管理员形态
 const COLS=[{key:'product',label:'商品',fixed:true},{key:'spec',label:'规格'},{key:'series',label:'系列'},{key:'prodDate',label:'生产日期',sort:true},{key:'qty',label:'库存',num:true,sort:true},{key:'cost',label:'成本价',num:true,sort:true},{key:'price',label:'总价',num:true,sort:true},{key:'batch',label:'批次号'},{key:'inDate',label:'入库时间',sort:true},{key:'supplier',label:'供应商'},{key:'status',label:'状态'},{key:'act',label:'操作',fixed:true}];
-const state={q:'',code:'',status:'全部',page:1,perPage:10,hidden:new Set(),sortBy:null,sortAsc:true,spec:new Set(),series:new Set(),wh:new Set()};
+const state={q:'',code:'',status:'全部',page:1,perPage:10,hidden:new Set(),sortBy:null,sortAsc:true,spec:'',series:'',wh:''};
 
 function setActive(k){ document.querySelectorAll('.nav[data-k]').forEach(e=>e.classList.toggle('active',e.dataset.k===k)); }
 function navTo(k){ setActive(k); const inv=document.querySelector('[data-view="inventory"]'), ph=document.querySelector('[data-view="placeholder"]'); if(k==='inventory'){inv.classList.add('active');ph.classList.remove('active');return;} inv.classList.remove('active');ph.classList.add('active'); const nav=NAVS.find(n=>n.k===k); document.getElementById('phTitle').textContent=nav.label; document.getElementById('phIcon').innerHTML=navSvg(nav.d); }
 
 function visibleCols(){ return COLS.filter(c=>!state.hidden.has(c.key)); }
-function filtered(){ const rows=ITEMS.filter(it=>{ if(state.status!=='全部'&&it.status!==state.status)return false; if(state.spec.size&&!state.spec.has(it.spec))return false; if(state.series.size&&!state.series.has(it.series))return false; if(state.wh.size&&!state.wh.has(it.supplier))return false; if(state.q){const q=state.q.toLowerCase(); if(!it.name.toLowerCase().includes(q)&&!it.code.toLowerCase().includes(q))return false;} return true; }); if(state.sortBy&&SORT_VAL[state.sortBy]){const v=SORT_VAL[state.sortBy];rows.sort((a,b)=>{const x=v(a),y=v(b);return (x<y?-1:x>y?1:0)*(state.sortAsc?1:-1);});} return rows; }
+function filtered(){ const rows=ITEMS.filter(it=>{ if(state.status!=='全部'&&it.status!==state.status)return false; if(state.spec&&it.spec!==state.spec)return false; if(state.series&&it.series!==state.series)return false; if(state.wh&&it.supplier!==state.wh)return false; if(state.q){const q=state.q.toLowerCase(); if(!it.name.toLowerCase().includes(q)&&!it.code.toLowerCase().includes(q))return false;} return true; }); if(state.sortBy&&SORT_VAL[state.sortBy]){const v=SORT_VAL[state.sortBy];rows.sort((a,b)=>{const x=v(a),y=v(b);return (x<y?-1:x>y?1:0)*(state.sortAsc?1:-1);});} return rows; }
 function render(){
   document.getElementById('statusVal').textContent=state.status==='全部'?'':state.status;
-  // 多选摘要（镜像 DsChip value）：1 项=值本身，多项=「N 项」
-  [['spec','chipSpec','specVal'],['series','chipSeries','seriesVal'],['wh','chipWh','whVal']].forEach(([k,cid,vid])=>{ const s=state[k]; document.getElementById(vid).textContent=!s.size?'':(s.size===1?[...s][0]:`${s.size} 项`); document.getElementById(cid).classList.toggle('on',!!s.size); });
+  // 单选摘要（镜像 DsChip value）：选中值本身，未选为空
+  [['spec','chipSpec','specVal'],['series','chipSeries','seriesVal'],['wh','chipWh','whVal']].forEach(([k,cid,vid])=>{ const s=state[k]; document.getElementById(vid).textContent=s||''; document.getElementById(cid).classList.toggle('on',!!s); });
   document.getElementById('chipStatus').classList.toggle('on',state.status!=='全部');
   const cols=visibleCols();
   document.getElementById('thead').innerHTML='<tr>'+cols.map(c=>{ const cls=(c.num?'num ':'')+(c.key==='act'?'act ':''); if(c.filter){const on=state.status!=='全部'; return `<th class="${cls}"><span class="fh ${on?'filtered':''}" onclick="openFilter('${c.filter}',this)">${c.label} <svg class="funnel" viewBox="0 0 24 24"><use href="#i-ic22"/></svg></span></th>`;} if(c.sort){const on=state.sortBy===c.key; const ic=!on?'i-chevron-down':(state.sortAsc?'i-ic51':'i-chevron-down'); return `<th class="${cls}"><span class="sh ${on?'on':''}" onclick="toggleSort('${c.key}')">${c.label} <svg class="sort-ic" viewBox="0 0 24 24"><use href="#${ic}"/></svg></span></th>`;} return `<th class="${cls}">${c.label}</th>`; }).join('')+'</tr>';
@@ -155,14 +155,19 @@ function filterStatus(s){ state.status=s; state.page=1; navTo('inventory'); rend
 // 列头排序：无→升→降→无 循环（真实实现为服务端全局排序）
 function toggleSort(k){ if(state.sortBy!==k){state.sortBy=k;state.sortAsc=true;} else if(state.sortAsc){state.sortAsc=false;} else {state.sortBy=null;state.sortAsc=true;} state.page=1; render(); }
 const SORT_VAL={qty:it=>it.qty,cost:it=>parseFloat(String(it.cost).replace(/[¥,]/g,''))||0,price:it=>parseFloat(String(it.price).replace(/[¥,]/g,''))||0,prodDate:it=>it.prodDate||'',inDate:it=>it.inDate||''};
-function clearFilters(){ state.q='';state.status='全部';state.spec.clear();state.series.clear();state.wh.clear();state.page=1; document.getElementById('searchInput').value=''; render(); }
+function clearFilters(){ state.q='';state.status='全部';state.spec='';state.series='';state.wh='';state.page=1; document.getElementById('searchInput').value=''; render(); }
 
 function openFilter(kind,t){ openMenu(t,STATUS.map(v=>({v,label:v,sel:v===state.status})),v=>{ state.status=v; state.page=1; closeMenus(); render(); }); }
-// 维度筛选 chip（规格/系列/仓库，2026-07-07 从列头漏斗上移）：多选，点选即生效、菜单保持打开（镜像 showDsMultiMenu）
+// 维度筛选 chip（规格/系列/仓库，2026-07-07 从列头漏斗上移）：均为单选（2026-08-28 用户口径）。
+// 规格/系列名录长 → 可搜索单选下拉（openSearchMenu，照 stock-out 客户筛选写法）；
+// 仓库名录短 → 普通单选下拉（openMenu，无搜索框）。
 const DIM_KEY={spec:'spec',series:'series',wh:'supplier'};
-function openDimFilter(dim,t){ const key=DIM_KEY[dim]; const opts=[...new Set(ITEMS.map(it=>it[key]).filter(Boolean))]; openMenu(t,opts.map(v=>({v,label:v,sel:state[dim].has(v)})),v=>{ state[dim].has(v)?state[dim].delete(v):state[dim].add(v); state.page=1; render(); openDimFilter(dim,t); }); }
+const DIM_PH={spec:'搜索规格…',series:'搜索系列…'};
+function openDimFilter(dim,t){ const key=DIM_KEY[dim]; const opts=[...new Set(ITEMS.map(it=>it[key]).filter(Boolean))];
+  if(dim==='wh'){ openMenu(t,opts.map(v=>({v,label:v,sel:v===state.wh})),v=>{ state.wh=v; state.page=1; closeMenus(); render(); }); return; }
+  openSearchMenu(t,opts.map(v=>({v,label:v,sel:v===state[dim]})),v=>{ state[dim]=v; state.page=1; closeMenus(); render(); },{placeholder:DIM_PH[dim]}); }
 // chip 尾部 × 单清（镜像 DsChip onClear：只清本维度，不展开菜单）
-function clearDim(dim,e){ e.stopPropagation(); state[dim].clear(); state.page=1; render(); }
+function clearDim(dim,e){ e.stopPropagation(); state[dim]=''; state.page=1; render(); }
 function clearStatus(e){ e.stopPropagation(); state.status='全部'; state.page=1; render(); }
 document.getElementById('chipStatus').onclick=e=>openFilter('status',e.currentTarget);
 const COL_KEY='jiu-inv-hidden';
diff --git a/design/prototype/screens/shell.js b/design/prototype/screens/shell.js
index 0de8383..59e4df1 100644
--- a/design/prototype/screens/shell.js
+++ b/design/prototype/screens/shell.js
@@ -56,7 +56,7 @@
 
   // 可搜索菜单：视觉承袭 .combo-pop（顶部 .cp-search 显式搜索框 + 边打边过滤 + 结果统计），
   // 供列表工具栏「供应商 / 客户」等长名录筛选复用（复用 atoms.css .combo-pop 族，零新增样式）。
-  // items: [{ v, label, sel, small? }]；opts: { placeholder, minW, cls }。
+  // items: [{ v, label, sel, small? }]；opts: { placeholder, minW, cls }。单选：点选后由 onPick 内自行 closeMenus。
   function openSearchMenu(t, items, onPick, opts) {
     closeMenus();
     opts = opts || {};