修复接单模板无法新增

apps/frontend/src/pages/admin/panels/ProductRulesPanel.tsx

@@ -26,7 +26,7 @@ import {
   Typography,
 } from 'antd'
 import type { TableColumnsType } from 'antd'
-import { useEffect, useMemo, useState } from 'react'
+import { useEffect, useMemo, useRef, useState } from 'react'
 import { useNavigate, useSearchParams } from 'react-router'
 
 import {
@@ -51,6 +51,7 @@ export default function ProductRulesPanel() {
   const [form] = Form.useForm()
   const navigate = useNavigate()
   const [searchParams] = useSearchParams()
+  const hasInitializedRuleSelection = useRef(false)
 
   const [editingRule, setEditingRule] = useState<WorkProductRule | null>(null)
   const [activeMappingId, setActiveMappingId] = useState<number | 'new' | null>(null)
@@ -113,9 +114,10 @@ export default function ProductRulesPanel() {
     ]),
   )
 
-  // Default select first rule if none selected when list loads
+  // 首次加载时默认选中第一条；新建时必须保留空表单，不能再次自动选回旧模板。
   useEffect(() => {
-    if (!editingRule && rules.length > 0) {
+    if (!hasInitializedRuleSelection.current && !editingRule && rules.length > 0) {
+      hasInitializedRuleSelection.current = true
       editRule(rules[0])
     }
   }, [rules, editingRule])