feat: 添加分类名称更新功能，支持在交易记录中同步更新分类名称

Web/src/views/ClassificationEdit.vue

@@ -41,7 +41,11 @@
       
       <van-cell-group v-else inset>
         <van-swipe-cell v-for="category in categories" :key="category.id">
-          <van-cell :title="category.name" />
+          <van-cell 
+            :title="category.name" 
+            is-link 
+            @click="handleEdit(category)"
+          />
           <template #right>
             <van-button 
               square 
@@ -85,6 +89,24 @@
       </van-form>
     </van-dialog>
 
+    <!-- 编辑分类对话框 -->
+    <van-dialog
+      v-model:show="showEditDialog"
+      title="编辑分类"
+      show-cancel-button
+      @confirm="handleConfirmEdit"
+    >
+      <van-form ref="editFormRef">
+        <van-field
+          v-model="editForm.name"
+          name="name"
+          label="分类名称"
+          placeholder="请输入分类名称"
+          :rules="[{ required: true, message: '请输入分类名称' }]"
+        />
+      </van-form>
+    </van-dialog>
+
     <!-- 删除确认对话框 -->
     <van-dialog
       v-model:show="showDeleteConfirm"
@@ -108,7 +130,8 @@ import {
 import {
   getCategoryList,
   createCategory,
-  deleteCategory
+  deleteCategory,
+  updateCategory
 } from '@/api/transactionCategory'
 
 const router = useRouter()
@@ -142,6 +165,14 @@ const addForm = ref({
 const showDeleteConfirm = ref(false)
 const deleteTarget = ref(null)
 
+// 编辑对话框
+const showEditDialog = ref(false)
+const editFormRef = ref(null)
+const editForm = ref({
+  id: 0,
+  name: ''
+})
+
 // 计算导航栏标题
 const navTitle = computed(() => {
   if (currentLevel.value === 0) {
@@ -251,6 +282,50 @@ const handleConfirmAdd = async () => {
   }
 }
 
+/**
+ * 编辑分类
+ */
+const handleEdit = (category) => {
+  editForm.value = {
+    id: category.id,
+    name: category.name
+  }
+  showEditDialog.value = true
+}
+
+/**
+ * 确认编辑
+ */
+const handleConfirmEdit = async () => {
+  try {
+    await editFormRef.value?.validate()
+    
+    showLoadingToast({
+      message: '保存中...',
+      forbidClick: true,
+      duration: 0
+    })
+
+    const { success, message } = await updateCategory({
+      id: editForm.value.id,
+      name: editForm.value.name
+    })
+
+    if (success) {
+      showSuccessToast('保存成功')
+      showEditDialog.value = false
+      await loadCategories()
+    } else {
+      showToast(message || '保存失败')
+    }
+  } catch (error) {
+    console.error('保存失败:', error)
+    showToast('保存失败: ' + (error.message || '未知错误'))
+  } finally {
+    closeToast()
+  }
+}
+
 /**
  * 删除分类
  */