refactor(CreateTemplateScreen): 移除展开/收起全部功能及相关代码

移除不再使用的展开/收起全部按钮及其相关函数，简化组件逻辑

src/renderer/screens/CreateTemplateScreen.vue

@@ -107,34 +107,7 @@
               添加根文件
             </v-tooltip>
           </v-btn>
-          <v-btn
+          
-            icon
-            variant="text"
-            @click="expandAll"
-            size="small"
-          >
-            <v-icon>mdi-arrow-expand-down</v-icon>
-            <v-tooltip
-              activator="parent"
-              location="bottom"
-            >
-              展开全部
-            </v-tooltip>
-          </v-btn>
-          <v-btn
-            icon
-            variant="text"
-            @click="collapseAll"
-            size="small"
-          >
-            <v-icon>mdi-arrow-collapse-up</v-icon>
-            <v-tooltip
-              activator="parent"
-              location="bottom"
-            >
-              收起全部
-            </v-tooltip>
-          </v-btn>
         </div>
 
         <TemplateTree
@@ -287,10 +260,7 @@ onMounted(async () => {
     }
   }
 
-  // Expand all nodes by default
+  
-  nextTick(() => {
-    expandAll()
-  })
 })
 
 onUnmounted(() => {
@@ -405,10 +375,7 @@ const handleDirectoryDialogConfirm = (data: { path: string; fullPath: string })
   parentDirectoryForNewItems.value = null // Clear parent context after creation
   currentEditingItem.value = null
 
-  // After adding a new directory, expand all nodes to show the new structure
+  
-  nextTick(() => {
-    expandAll()
-  })
 }
 
 // 在树状结构中更新节点的辅助函数
@@ -551,10 +518,7 @@ const handleFileDialogConfirm = (data: { path: string; fullPath: string; sourceF
   parentDirectoryForNewItems.value = null // Clear parent context after creation
   currentEditingItem.value = null
 
-  // After adding a new file, expand all nodes to show the new structure
+  
-  nextTick(() => {
-    expandAll()
-  })
 }
 
 // 检查树中是否有重复路径的辅助函数
@@ -593,25 +557,7 @@ const goBack = async () => {
   }
 }
 
-const expandAll = () => {
-  const allIds: string[] = []
 
-  const collectIds = (items: TreeItem[]) => {
-    items.forEach((item) => {
-      if (item.children && item.children.length > 0) {
-        allIds.push(item.id)
-        collectIds(item.children)
-      }
-    })
-  }
-
-  collectIds(treeItems.value)
-  expandedNodes.value = allIds
-}
-
-const collapseAll = () => {
-  expandedNodes.value = []
-}