fix: 移动端表单优化

1. 新增页面必填项标记
   - expense/Add.vue: 支出标题、支出类型、支出金额添加红色星号必填标记
   - 其他使用 van-form 的页面已有 required 属性标记

2. 错误提示优化
   - 将 showToast 改为 showFailToast 显示错误提示
   - showFailToast 使用红色背景，错误信息更清晰可见
   - 涉及文件：
     - expense/Add.vue
     - requirement/Add.vue
     - receivable/Add.vue
     - project/Add.vue
     - customer/Add.vue
     - my/ChangePassword.vue

fund-mobile/src/views/customer/Add.vue

@@ -92,7 +92,7 @@
 <script setup lang="ts">
 import { ref, computed } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast } from 'vant'
+import { showFailToast, showSuccessToast } from 'vant'
 import { createCustomer } from '@/api'
 
 const router = useRouter()
@@ -129,7 +129,7 @@ const onLevelConfirm = ({ selectedOptions }: any) => {
 
 const onSubmit = async () => {
   if (!form.value.customerName) {
-    showToast('请输入客户名称')
+    showFailToast('请输入客户名称')
     return
   }
   
@@ -148,7 +148,7 @@ const onSubmit = async () => {
     showSuccessToast('提交成功')
     router.back()
   } catch (e: any) {
-    showToast(e.message || '提交失败')
+    showFailToast(e.message || '提交失败')
   } finally {
     submitting.value = false
   }

fund-mobile/src/views/expense/Add.vue

@@ -10,12 +10,12 @@
     
     <div class="form-card mac-card fade-in-up">
       <div class="form-group">
-        <label>支出标题</label>
+        <label>支出标题 <span class="required">*</span></label>
         <input v-model="form.title" placeholder="输入标题" class="mac-input" />
       </div>
       
       <div class="form-group">
-        <label>支出类型</label>
+        <label>支出类型 <span class="required">*</span></label>
         <div class="mac-select" @click="showTypePicker = true">
           <span :class="{ placeholder: !form.expenseTypeName }">
             {{ form.expenseTypeName || '选择类型' }}
@@ -25,7 +25,7 @@
       </div>
       
       <div class="form-group">
-        <label>支出金额</label>
+        <label>支出金额 <span class="required">*</span></label>
         <div class="amount-input">
           <span class="currency">¥</span>
           <input v-model="form.amount" type="number" placeholder="0.00" />
@@ -69,7 +69,7 @@
 <script setup lang="ts">
 import { ref, reactive, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast } from 'vant'
+import { showToast, showSuccessToast, showFailToast } from 'vant'
 import { createExpense, getExpenseTypeTree } from '@/api'
 
 const router = useRouter()
@@ -102,15 +102,15 @@ const onDateConfirm = ({ selectedValues }: any) => {
 
 const handleSubmit = async () => {
   if (!form.title) {
-    showToast('请输入支出标题')
+    showFailToast('请输入支出标题')
     return
   }
   if (!form.expenseTypeId) {
-    showToast('请选择支出类型')
+    showFailToast('请选择支出类型')
     return
   }
   if (!form.amount) {
-    showToast('请输入支出金额')
+    showFailToast('请输入支出金额')
     return
   }
 
@@ -132,7 +132,7 @@ const handleSubmit = async () => {
     router.back()
   } catch (e: any) {
     console.error('提交失败:', e)
-    showToast(e.message || '提交失败')
+    showFailToast(e.message || '提交失败')
   } finally {
     loading.value = false
   }
@@ -219,6 +219,11 @@ onMounted(async () => {
   white-space: nowrap;
 }
 
+.form-group label .required {
+  color: var(--mac-danger);
+  margin-left: 2px;
+}
+
 .mac-input {
   width: 100%;
   padding: 14px 16px;

fund-mobile/src/views/my/ChangePassword.vue

@@ -58,7 +58,7 @@
 <script setup lang="ts">
 import { ref } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast, showConfirmDialog } from 'vant'
+import { showFailToast, showSuccessToast, showConfirmDialog } from 'vant'
 import { updatePassword } from '@/api'
 
 const router = useRouter()
@@ -76,12 +76,12 @@ const validateConfirmPassword = () => {
 
 const onSubmit = async () => {
   if (form.value.newPassword !== form.value.confirmPassword) {
-    showToast('两次密码输入不一致')
+    showFailToast('两次密码输入不一致')
     return
   }
   
   if (form.value.oldPassword === form.value.newPassword) {
-    showToast('新密码不能与旧密码相同')
+    showFailToast('新密码不能与旧密码相同')
     return
   }
   
@@ -112,7 +112,7 @@ const onSubmit = async () => {
     
   } catch (e: any) {
     if (e.message !== 'cancel') {
-      showToast(e.message || '修改失败')
+      showFailToast(e.message || '修改失败')
     }
   } finally {
     submitting.value = false

fund-mobile/src/views/project/Add.vue

@@ -117,7 +117,7 @@
 <script setup lang="ts">
 import { ref, onMounted, computed } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast } from 'vant'
+import { showFailToast, showSuccessToast } from 'vant'
 import { createProject, getCustomerList } from '@/api'
 
 const router = useRouter()
@@ -188,7 +188,7 @@ const loadOptions = async () => {
 
 const onSubmit = async () => {
   if (!form.value.projectName) {
-    showToast('请输入项目名称')
+    showFailToast('请输入项目名称')
     return
   }
   
@@ -206,7 +206,7 @@ const onSubmit = async () => {
     showSuccessToast('提交成功')
     router.back()
   } catch (e: any) {
-    showToast(e.message || '提交失败')
+    showFailToast(e.message || '提交失败')
   } finally {
     submitting.value = false
   }

fund-mobile/src/views/receivable/Add.vue

@@ -102,7 +102,7 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast } from 'vant'
+import { showFailToast, showSuccessToast } from 'vant'
 import { createReceivable, getCustomerList, getProjectList } from '@/api'
 
 const router = useRouter()
@@ -170,15 +170,15 @@ const loadOptions = async () => {
 
 const onSubmit = async () => {
   if (!form.value.customerId) {
-    showToast('请选择客户')
+    showFailToast('请选择客户')
     return
   }
   if (!form.value.receivableAmount) {
-    showToast('请输入应收金额')
+    showFailToast('请输入应收金额')
     return
   }
   if (!form.value.receivableDate) {
-    showToast('请选择应收日期')
+    showFailToast('请选择应收日期')
     return
   }
   
@@ -194,7 +194,7 @@ const onSubmit = async () => {
     showSuccessToast('提交成功')
     router.back()
   } catch (e: any) {
-    showToast(e.message || '提交失败')
+    showFailToast(e.message || '提交失败')
   } finally {
     submitting.value = false
   }

fund-mobile/src/views/requirement/Add.vue

@@ -93,7 +93,7 @@
 <script setup lang="ts">
 import { ref, onMounted, computed } from 'vue'
 import { useRouter } from 'vue-router'
-import { showToast, showSuccessToast } from 'vant'
+import { showFailToast, showSuccessToast } from 'vant'
 import { createRequirement, getCustomerList, getProjectList } from '@/api'
 
 const router = useRouter()
@@ -166,7 +166,7 @@ const loadOptions = async () => {
 
 const onSubmit = async () => {
   if (!form.value.title) {
-    showToast('请输入需求标题')
+    showFailToast('请输入需求标题')
     return
   }
   
@@ -182,7 +182,7 @@ const onSubmit = async () => {
     showSuccessToast('提交成功')
     router.back()
   } catch (e: any) {
-    showToast(e.message || '提交失败')
+    showFailToast(e.message || '提交失败')
   } finally {
     submitting.value = false
   }