fix(t243): allow deleting unreferenced procurement drafts

backend-api/internal/transport/webui/templates/freight-detail.gohtml

@@ -137,7 +137,7 @@
     <noscript>
       <section class="noscript-cancel" aria-labelledby="freight-delete-noscript-title">
         <h2 id="freight-delete-noscript-title">删除本地货运单</h2>
-        <p>只删除本系统保存的信息，不影响顺运宝 ERP；已进入采购流程的货运单不能删除。</p>
+        <p>只删除本系统保存的信息，不影响顺运宝 ERP；未绑定参考图的采购需求草稿会一并删除，已绑定参考图或已生成任务时系统拒绝删除。</p>
         <form method="post" action="/freight/{{pathPart .Detail.Order.ID}}/delete">
           <input type="hidden" name="csrf_token" value="{{.Page.CSRFToken}}">
           <label class="confirm-line">
@@ -152,7 +152,7 @@
     <dialog class="confirm-dialog" data-freight-delete-dialog
       aria-labelledby="freight-delete-title">
       <h2 id="freight-delete-title">删除本地货运单？</h2>
-      <p>将删除本系统保存的 {{if .Detail.Order.SourceCode}}{{.Detail.Order.SourceCode}}{{else}}该货运单{{end}} 及商品图片，不影响顺运宝 ERP。已进入采购流程时系统会拒绝删除。</p>
+      <p>将删除本系统保存的 {{if .Detail.Order.SourceCode}}{{.Detail.Order.SourceCode}}{{else}}该货运单{{end}}、商品图片及未绑定参考图的采购需求草稿，不影响顺运宝 ERP。已绑定参考图或已生成任务时系统拒绝删除。</p>
       <div class="dialog-actions">
         <button class="button" type="button"
           data-keep-freight-order>保留货运单</button>