fix: 更新配置和代码逻辑以提升稳定性和可读性

- 在 manifest.json 和 project.config.json 中启用 postcss 和 enhance 设置
- 在多个 Vue 组件中优化空值处理逻辑，确保更健壮的代码执行
- 调整样式和布局以提升用户体验

pages/mine/distribution/history.vue

@@ -74,7 +74,7 @@ const withdrawParams = ref({ pageNumber: 1, pageSize: 10 })
 const achievementParams = ref({ pageNumber: 1, pageSize: 10 })
 
 onLoad((option) => {
-  const type = Number(option.type ?? 0)
+  const type = Number(option.type != null ? option.type : 0)
   listType.value = type
   routeQuery.value = option || {}
   uni.setNavigationBarTitle({

pages/mine/distribution/withdrawal.vue

@@ -59,7 +59,7 @@ function fetchDistributionInfo() {
 }
 
 function submitWithdraw() {
-  const amount = String(price.value ?? '')
+  const amount = String(price.value != null ? price.value : '')
   if (proxy.$u.test.amount(parseInt(amount))) {
     cash({ price: amount }).then((res) => {
       if (res.data.success) {
@@ -75,7 +75,10 @@ function submitWithdraw() {
 }
 
 function fillAllAmount() {
-  price.value = distributionData.value.canRebate ?? ''
+  price.value =
+    distributionData.value.canRebate != null
+      ? distributionData.value.canRebate
+      : ''
 }
 </script>