feat: 优化模板树组件，默认展开所有节点，增强用户体验；在创建模板时添加新文件和目录后自动展开树节点

src/renderer/screens/CreateTemplateScreen.vue

@@ -531,7 +531,9 @@ onMounted(async () => {
   }
 
   // Expand all nodes by default
-  expandAll()
+  nextTick(() => {
+    expandAll()
+  })
 })
 
 onUnmounted(() => {
@@ -625,16 +627,15 @@ const confirmAddDirectory = () => {
   }
 
   showDirectoryDialog.value = false
-  newDirectoryPath.value = ''
   parentDirectoryForNewItems.value = null // Clear parent context after creation
   currentEditingItem.value = null
 
-  // If we added to a parent directory, make sure it's expanded
-  if (parentDirectoryForNewItems.value) {
-    if (!expandedNodes.value.includes(`dir-${parentDirectoryForNewItems.value}`)) {
-      expandedNodes.value.push(`dir-${parentDirectoryForNewItems.value}`)
-    }
-  }
+  // After adding a new directory, expand all nodes to show the new structure
+  nextTick(() => {
+    expandAll()
+  })
+  
+  newDirectoryPath.value = ''
 }
 
 // Helper function to update paths when a directory is renamed
@@ -737,9 +738,15 @@ const selectAndAddFile = async () => {
       isAutoFindMode.value = false
 
       showFileDialog.value = false
-      newFilePath.value = ''
       parentDirectoryForNewItems.value = null // Clear parent context after creation
       currentEditingItem.value = null
+
+      // After adding new files, expand all nodes to show the new structure
+      nextTick(() => {
+        expandAll()
+      })
+
+      newFilePath.value = ''
       return
     }
 
@@ -757,9 +764,15 @@ const selectAndAddFile = async () => {
       isAutoFindMode.value = false
 
       showFileDialog.value = false
-      newFilePath.value = ''
       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()
+      })
+
+      newFilePath.value = ''
       return
     }
 
@@ -773,9 +786,15 @@ const selectAndAddFile = async () => {
   isAutoFindMode.value = false
 
   showFileDialog.value = false
-  newFilePath.value = ''
   parentDirectoryForNewItems.value = null
   currentEditingItem.value = null
+
+  // After adding a new file, expand all nodes to show the new structure
+  nextTick(() => {
+    expandAll()
+  })
+
+  newFilePath.value = ''
 }
 
 const goBack = async () => {