feat(client): 库存移动卡片品名后缀生产日期 + 商品抽屉生产日期行

- 原型先行（L1）：mobile-atoms 新增 .mc-nm .mc-date 原子（xs muted mono 左距8），
  index.html 登记，m-inventory 卡片模板与详情 sheet 同步补生产日期
- MCard 新增 nmSuffix 插槽镜像 .mc-date；库存窄屏卡片品名后缀生产日期小字
- Product 模型补 production_date（只读侧，不进 toJson）；商品抽屉信息区
  新增「生产日期」行（分类后、当前库存前，mono）
- 重生成库存移动 golden ×6（inventory_list_mobile / m_inventory 三主题）

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

client/lib/models/product.dart

@@ -14,6 +14,8 @@ class Product {
   final double? purchasePrice;
   final double? salePrice;
   final int? minStock;
+  // 生产日期（YYYY-MM-DD，后端 Date 序列化，空串=未填）
+  final String? productionDate;
   final String? description;
   final String? remark;
   final Map<String, dynamic>? customFields;
@@ -41,6 +43,7 @@ class Product {
     this.purchasePrice,
     this.salePrice,
     this.minStock,
+    this.productionDate,
     this.description,
     this.remark,
     this.customFields,
@@ -75,6 +78,7 @@ class Product {
         minStock: json['min_stock'] != null
             ? (json['min_stock'] as num).toInt()
             : null,
+        productionDate: json['production_date'] as String?,
         description: json['description'] as String?,
         remark: json['remark'] as String?,
         customFields: json['custom_fields'] as Map<String, dynamic>?,

client/lib/screens/inventory/inventory_list_screen.dart

@@ -613,6 +613,8 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
     return MCard(
       onTap: item.productId != null ? () => _openEditor(item) : null,
       nm: item.productName.isEmpty ? '-' : item.productName,
+      // 生产日期小字缀在品名后（原型 .mc-date，2026-07-10 用户口径）
+      nmSuffix: (item.productionDate ?? '').isEmpty ? null : item.productionDate,
       sub: sub.isEmpty ? null : sub,
       badges: [DsTextIconBadge(status)],
       amtWidget: Text.rich(

client/lib/widgets/ds/m_card.dart

@@ -101,6 +101,9 @@ class MCard extends StatelessWidget {
   /// mc-nm 标题（600 heading）。
   final String nm;
 
+  /// mc-date 标题后缀（原型 .mc-nm .mc-date：xs muted mono，左距 8）；null 不渲染。
+  final String? nmSuffix;
+
   /// mc-sub 副行（xs muted mono）；null 不渲染。
   final String? sub;
 
@@ -119,6 +122,7 @@ class MCard extends StatelessWidget {
   const MCard({
     super.key,
     required this.nm,
+    this.nmSuffix,
     this.sub,
     this.badges = const [],
     this.amt,
@@ -151,13 +155,32 @@ class MCard extends StatelessWidget {
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
-                        Text(nm,
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                            style: TextStyle(
-                                fontSize: AppDims.fsBody,
-                                fontWeight: FontWeight.w600,
-                                color: t.heading)),
+                        Row(
+                          mainAxisSize: MainAxisSize.min,
+                          crossAxisAlignment: CrossAxisAlignment.baseline,
+                          textBaseline: TextBaseline.alphabetic,
+                          children: [
+                            Flexible(
+                              child: Text(nm,
+                                  maxLines: 1,
+                                  overflow: TextOverflow.ellipsis,
+                                  style: TextStyle(
+                                      fontSize: AppDims.fsBody,
+                                      fontWeight: FontWeight.w600,
+                                      color: t.heading)),
+                            ),
+                            if (nmSuffix != null) ...[
+                              const SizedBox(width: 8),
+                              Text(nmSuffix!,
+                                  style: TextStyle(
+                                      fontSize: AppDims.fsXs,
+                                      color: t.muted,
+                                      fontFamily: AppFonts.mono,
+                                      fontFamilyFallback:
+                                          AppFonts.monoFallback)),
+                            ],
+                          ],
+                        ),
                         if (sub != null) ...[
                           const SizedBox(height: 3),
                           Text(sub!,

client/lib/widgets/product_editor_drawer.dart

@@ -394,6 +394,9 @@ class _ProductEditorDrawerState extends ConsumerState<_ProductEditorDrawer> {
     if ((p.series ?? '').isNotEmpty) rows.add(('系列', b(p.series!)));
     if ((p.spec ?? '').isNotEmpty) rows.add(('规格', b(p.spec!)));
     if ((p.categoryName ?? '').isNotEmpty) rows.add(('分类', b(p.categoryName!)));
+    if ((p.productionDate ?? '').isNotEmpty) {
+      rows.add(('生产日期', b(p.productionDate!, mono: true)));
+    }
     if (widget.qty != null) {
       rows.add((
         '当前库存',

design/prototype/index.html

@@ -437,7 +437,7 @@
       <section class="section" id="m-comp">
         <h2>移动专属组件 .m-*</h2><p class="desc">来自 <code>mobile-atoms.css</code> 的移动专属原子，由 <code>mobile-shell.js</code> 装配外壳。<b>复用上方公用原子</b>（按钮/徽章/分段/输入），此处只展示移动新增的 <code>.m-*</code>。</p>
         <div style="margin:0 0 16px"><a class="btn ghost" href="screens/mobile-kit.html"><svg viewBox="0 0 24 24"><use href="#i-ic62"/></svg>打开移动 UI Kit · 全部 .m-* 实机展示</a></div>
-        <div class="pcard"><div class="pcard-h"><h3>移动壳 + 列表（实机预览）</h3><span class="tk">.m-top · .m-tabbar · .m-page · .m-kpi · .m-search · .m-filters/.m-pill · .m-card/.m-row · .m-fab</span></div>
+        <div class="pcard"><div class="pcard-h"><h3>移动壳 + 列表（实机预览）</h3><span class="tk">.m-top · .m-tabbar · .m-page · .m-kpi · .m-search · .m-filters/.m-pill · .m-card/.m-row（.mc-nm 可带 .mc-date 日期后缀）· .m-fab</span></div>
           <div class="pcard-b" style="align-items:flex-start"><div class="mdemo">
             <div class="mphone">
               <div class="m-top"><div class="m-title">库存</div><div class="m-actions"><div class="m-ic"><svg viewBox="0 0 24 24"><use href="#i-shirt"/></svg></div><div class="m-ic"><svg viewBox="0 0 24 24"><use href="#i-bell"/></svg><span class="m-dot">3</span></div><div class="m-av">王</div></div></div>
@@ -451,7 +451,7 @@
                 <div class="m-search" style="margin-top:12px"><svg viewBox="0 0 24 24"><use href="#i-search"/></svg><input placeholder="商品名 / 拼音 / 编码"></div>
                 <div class="m-filters"><div class="m-pill on">全部</div><div class="m-pill">酱香</div><div class="m-pill">浓香</div><div class="m-pill">清香</div></div>
                 <div class="m-section">商品 · 共 10</div>
-                <a class="m-card"><div class="m-row"><div class="mc-main"><div class="mc-nm">茅台 飞天 53°</div><div class="mc-sub">MT-FT-500 · 500ml×6</div></div><div class="mc-right"><span class="badge b-在售">在售</span><span class="mc-amt">128 件</span></div><div class="mc-chev"><svg viewBox="0 0 24 24"><use href="#i-chevron-right"/></svg></div></div></a>
+                <a class="m-card"><div class="m-row"><div class="mc-main"><div class="mc-nm">茅台 飞天 53°<span class="mc-date">2024-07-11</span></div><div class="mc-sub">MT-FT-500 · 500ml×6</div></div><div class="mc-right"><span class="badge b-在售">在售</span><span class="mc-amt">128 件</span></div><div class="mc-chev"><svg viewBox="0 0 24 24"><use href="#i-chevron-right"/></svg></div></div></a>
                 <a class="m-card"><div class="m-row"><div class="mc-main"><div class="mc-nm">剑南春 水晶剑</div><div class="mc-sub">JNC-SJ-500 · 500ml×6</div></div><div class="mc-right"><span class="badge b-缺货">缺货</span><span class="mc-amt">8 件</span></div><div class="mc-chev"><svg viewBox="0 0 24 24"><use href="#i-chevron-right"/></svg></div></div></a>
               </div></div>
               <nav class="m-tabbar">

design/prototype/mobile-atoms.css

@@ -42,6 +42,7 @@
 .m-row{display:flex; align-items:center; gap:12px;}
 .m-row .mc-main{min-width:0; flex:1;}
 .m-row .mc-nm{font-weight:600; color:var(--heading); font-size:var(--fs-body); overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
+.m-row .mc-nm .mc-date{font-weight:400; font-size:var(--fs-xs); color:var(--muted); font-family:var(--font-mono); margin-left:8px;}
 .m-row .mc-sub{font-size:var(--fs-xs); color:var(--muted); margin-top:3px; font-family:var(--font-mono); overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
 .m-row .mc-right{display:flex; flex-direction:column; align-items:flex-end; gap:5px; flex:none;}
 .m-row .mc-amt{font-weight:700; color:var(--heading); font-size:var(--fs-body); font-family:var(--font-mono);}

design/prototype/screens/m-inventory.html

@@ -36,16 +36,16 @@
 <script src="mobile-shell.js"></script>
 <script>
 const ITEMS=[
-  {name:'茅台 飞天 53°',code:'MT-FT-500',spec:'500ml×6',series:'飞天',batch:'PZ240711',qty:128,unit:'件',cost:'¥2,680',supplier:'贵州茅台经销',status:'在售'},
-  {name:'五粮液 普五 52°',code:'WLY-PW-500',spec:'500ml×6',series:'普五',batch:'PZ240428',qty:64,unit:'件',cost:'¥1,050',supplier:'宜宾五粮液',status:'在售'},
-  {name:'剑南春 水晶剑',code:'JNC-SJ-500',spec:'500ml×6',series:'水晶剑',batch:'PZ231115',qty:8,unit:'件',cost:'¥438',supplier:'绵竹剑南春',status:'已售'},
-  {name:'国窖 1573',code:'GJ-1573-500',spec:'500ml×6',series:'1573',batch:'PZ240208',qty:42,unit:'件',cost:'¥980',supplier:'泸州老窖',status:'在售'},
-  {name:'洋河 梦之蓝 M6',code:'YH-M6-500',spec:'550ml×6',series:'梦之蓝M6',batch:'PZ240520',qty:23,unit:'件',cost:'¥620',supplier:'洋河股份',status:'库存'},
-  {name:'泸州老窖 特曲',code:'LZLJ-TQ-500',spec:'500ml×6',series:'特曲',batch:'PZ240630',qty:156,unit:'件',cost:'¥320',supplier:'泸州老窖',status:'在售'},
-  {name:'习酒 窖藏 1988',code:'XJ-JC1988',spec:'500ml×6',series:'窖藏1988',batch:'PZ230918',qty:31,unit:'件',cost:'¥760',supplier:'贵州习酒',status:'在售'},
-  {name:'汾酒 青花 20',code:'FJ-QH20-500',spec:'500ml×6',series:'青花20',batch:'PZ240112',qty:0,unit:'件',cost:'¥420',supplier:'山西杏花村',status:'已售'},
-  {name:'郎酒 红花郎 15',code:'LJ-HHL15',spec:'500ml×6',series:'红花郎15',batch:'PZ240325',qty:54,unit:'件',cost:'¥560',supplier:'四川郎酒',status:'在售'},
-  {name:'西凤酒 旗舰版',code:'XF-QJ-500',spec:'500ml×6',series:'旗舰版',batch:'PZ240614',qty:88,unit:'件',cost:'¥280',supplier:'陕西西凤',status:'在售'},
+  {name:'茅台 飞天 53°',code:'MT-FT-500',spec:'500ml×6',series:'飞天',batch:'PZ240711',prod:'2024-07-11',qty:128,unit:'件',cost:'¥2,680',supplier:'贵州茅台经销',status:'在售'},
+  {name:'五粮液 普五 52°',code:'WLY-PW-500',spec:'500ml×6',series:'普五',batch:'PZ240428',prod:'2024-04-28',qty:64,unit:'件',cost:'¥1,050',supplier:'宜宾五粮液',status:'在售'},
+  {name:'剑南春 水晶剑',code:'JNC-SJ-500',spec:'500ml×6',series:'水晶剑',batch:'PZ231115',prod:'2023-11-15',qty:8,unit:'件',cost:'¥438',supplier:'绵竹剑南春',status:'已售'},
+  {name:'国窖 1573',code:'GJ-1573-500',spec:'500ml×6',series:'1573',batch:'PZ240208',prod:'2024-02-08',qty:42,unit:'件',cost:'¥980',supplier:'泸州老窖',status:'在售'},
+  {name:'洋河 梦之蓝 M6',code:'YH-M6-500',spec:'550ml×6',series:'梦之蓝M6',batch:'PZ240520',prod:'2024-05-20',qty:23,unit:'件',cost:'¥620',supplier:'洋河股份',status:'库存'},
+  {name:'泸州老窖 特曲',code:'LZLJ-TQ-500',spec:'500ml×6',series:'特曲',batch:'PZ240630',prod:'2024-06-30',qty:156,unit:'件',cost:'¥320',supplier:'泸州老窖',status:'在售'},
+  {name:'习酒 窖藏 1988',code:'XJ-JC1988',spec:'500ml×6',series:'窖藏1988',batch:'PZ230918',prod:'2023-09-18',qty:31,unit:'件',cost:'¥760',supplier:'贵州习酒',status:'在售'},
+  {name:'汾酒 青花 20',code:'FJ-QH20-500',spec:'500ml×6',series:'青花20',batch:'PZ240112',prod:'2024-01-12',qty:0,unit:'件',cost:'¥420',supplier:'山西杏花村',status:'已售'},
+  {name:'郎酒 红花郎 15',code:'LJ-HHL15',spec:'500ml×6',series:'红花郎15',batch:'PZ240325',prod:'2024-03-25',qty:54,unit:'件',cost:'¥560',supplier:'四川郎酒',status:'在售'},
+  {name:'西凤酒 旗舰版',code:'XF-QJ-500',spec:'500ml×6',series:'旗舰版',batch:'PZ240614',prod:'2024-06-14',qty:88,unit:'件',cost:'¥280',supplier:'陕西西凤',status:'在售'},
 ];
 const state={q:''};
 
@@ -57,7 +57,7 @@ function render(){
   if(!rows.length){ L.innerHTML=`<div class="m-empty"><svg viewBox="0 0 24 24"><use href="#i-box"/></svg>没有匹配的商品 · 调整筛选或搜索</div>`; return; }
   L.innerHTML=rows.map((it,i)=>`<a class="m-card" onclick="openItem(${ITEMS.indexOf(it)})">
     <div class="m-row">
-      <div class="mc-main"><div class="mc-nm">${it.name}</div><div class="mc-sub">${it.code} · ${it.spec} · ${it.cost}</div></div><!-- 单价=成本进价，仅管理员可见（2026-07-06） -->
+      <div class="mc-main"><div class="mc-nm">${it.name}<span class="mc-date">${it.prod}</span></div><div class="mc-sub">${it.code} · ${it.spec} · ${it.cost}</div></div><!-- 单价=成本进价，仅管理员可见（2026-07-06） -->
       <div class="mc-right"><span class="badge b-${it.status}">${it.status}</span><span class="mc-amt"><span class="${it.qty<=10?'qty-low':''}">${it.qty}</span> ${it.unit}</span></div>
       <div class="mc-chev"><svg viewBox="0 0 24 24"><use href="#i-chevron-right"/></svg></div>
     </div>
@@ -66,7 +66,7 @@ function render(){
 function openItem(idx){ const it=ITEMS[idx];
   if(!peEdit||peEdit.idx!==idx) peEdit={idx,imgs:[PE_SAMPLE[0],'',''],introName:'',introBody:''};
   const hasIntro=!!peEdit.introName;
-  openSheet(it.name, `<div class="drow"><span>编码</span><b style="font-family:var(--font-mono)">${it.code}</b></div><div class="drow"><span>规格</span><b>${it.spec}</b></div><div class="drow"><span>系列</span><b>${it.series}</b></div><div class="drow"><span>批次号</span><b style="font-family:var(--font-mono)">${it.batch}</b></div><div class="drow"><span>当前库存</span><b>${it.qty} ${it.unit}</b></div><div class="drow"><span>成本价</span><b>${it.cost}</b></div><div class="drow"><span>供应商</span><b>${it.supplier}</b></div><div class="drow" style="border-bottom:none"><span>状态</span><b style="display:flex;align-items:center;gap:10px"><span class="badge b-${it.status}">${it.status}</span>${it.status==='已售'?'':`<button class="switch ${it.status==='在售'?'on':''}" aria-label="挂售切换" onclick="this.classList.toggle('on');const b=this.previousElementSibling;const on=this.classList.contains('on');b.textContent=on?'在售':'库存';b.className='badge '+(on?'b-在售':'b-库存');"></button>`}</b></div>
+  openSheet(it.name, `<div class="drow"><span>编码</span><b style="font-family:var(--font-mono)">${it.code}</b></div><div class="drow"><span>规格</span><b>${it.spec}</b></div><div class="drow"><span>系列</span><b>${it.series}</b></div><div class="drow"><span>批次号</span><b style="font-family:var(--font-mono)">${it.batch}</b></div><div class="drow"><span>生产日期</span><b style="font-family:var(--font-mono)">${it.prod}</b></div><div class="drow"><span>当前库存</span><b>${it.qty} ${it.unit}</b></div><div class="drow"><span>成本价</span><b>${it.cost}</b></div><div class="drow"><span>供应商</span><b>${it.supplier}</b></div><div class="drow" style="border-bottom:none"><span>状态</span><b style="display:flex;align-items:center;gap:10px"><span class="badge b-${it.status}">${it.status}</span>${it.status==='已售'?'':`<button class="switch ${it.status==='在售'?'on':''}" aria-label="挂售切换" onclick="this.classList.toggle('on');const b=this.previousElementSibling;const on=this.classList.contains('on');b.textContent=on?'在售':'库存';b.className='badge '+(on?'b-在售':'b-库存');"></button>`}</b></div>
   <div class="pe-card" style="margin-top:14px"><div class="pe-h"><span class="pe-ic"><svg viewBox="0 0 24 24"><use href="#i-ic27"/></svg></span>商品图片</div>
     <div class="pe-b"><div class="pe-gallery" id="mGallery"></div><div class="pe-note">建议主图为白底产品图，可再加细节图（瓶身/防伪）与场景图。</div></div></div>
   <div class="pe-card"><div class="pe-h"><span class="pe-ic"><svg viewBox="0 0 24 24"><use href="#i-ic28"/></svg></span>商品介绍 / 卖点</div>