feat: 明确顺运宝复用 PDD 关联 (#183)

admin/templates/syb/detail_modal.html

@@ -20,6 +20,7 @@
   <p class="missing" role="alert">顺运宝没有提供规格原文，系统无法安全判断要采购的颜色和尺码。请先核对上游货运单数据。</p>
   {{else}}
   <h3>关联采购商品</h3>
+  {{if .PddAssociationText}}<p class="hint" role="status">{{.PddAssociationText}}；仅在需要更换采购商品时修改下面的关联。</p>{{end}}
   <form method="post" action="/syb/associate-pdd" class="form-stack">
     <input type="hidden" name="csrf_token" value="{{$.CSRFToken}}">
     <input type="hidden" name="syb_id" value="{{.SybID}}">

admin/templates/syb/list.html

@@ -149,7 +149,7 @@
         </button>
         {{else}}—{{end}}
       </td>
-      <td><span class="status-pill">{{.StageText}}</span><br><small>{{.StageHelp}}</small></td>
+      <td><span class="status-pill">{{.StageText}}</span><br><small>{{.StageHelp}}</small>{{if .PddAssociationText}}<br><small class="hint">{{.PddAssociationText}}</small>{{end}}</td>
       <td>
         {{if eq .Stage "purchase_ready"}}
         <button type="button" data-modal-open="purchase-modal" data-purchase-open