fix(订单表单): 禁用金额和数量字段的手动编辑并更新提示信息

src/components/order-form/form-option.js

@@ -130,11 +130,12 @@ export const orderFormOption = {
           type: 'number',
           span: 8,
           precision: 2,
-          placeholder: '请输入订单总金额',
+          placeholder: '由系统自动计算',
           prepend: '¥',
+          disabled: true, // 禁用手动编辑，只能通过自动计算更新
           rules: [{
             required: true,
-            message: '请输入订单总金额',
+            message: '订单总金额不能为空',
             trigger: 'blur'
           }, {
             type: 'number',
@@ -149,10 +150,11 @@ export const orderFormOption = {
           type: 'number',
           span: 8,
           precision: 0,
-          placeholder: '请输入订单总数量',
+          placeholder: '订单总数量不能为空',
+          disabled: true, // 禁用手动编辑，只能通过自动计算更新
           rules: [{
             required: true,
-            message: '请输入订单总数量',
+            message: '订单总数量不能为空',
             trigger: 'blur'
           }, {
             type: 'number',