fix(todo): 编辑时内容为空则自动删除任务项

src/modules/todo/TodoPage.tsx

@@ -148,7 +148,18 @@ export const TodoPage: React.FC = () => {
     if (!editingItem) return
     const { date, index } = editingItem
     const newContent = editContent.trim()
-    if (!newContent) return
+    if (!newContent) {
+      try {
+        const data = await deleteTodoItem(currentYear, currentMonth, date, index)
+        setDayTodos(data.dayTodos)
+      } catch (error) {
+        console.error('Failed to delete TODO:', error)
+      } finally {
+        setEditingItem(null)
+        setEditContent('')
+      }
+      return
+    }
 
     try {
       const data = await updateTodoItem(currentYear, currentMonth, date, index, newContent)