fix: create folder

backend/internal/service/script_service.go

@@ -38,6 +38,7 @@ type treeNode struct {
 
 // BuildTree builds a directory tree from all scripts in the database.
 // Each script path is treated as a file path (e.g. "deploy/nginx/restart.sh").
+// Scripts with empty content and interpreter_id=0 are treated as folder placeholders.
 func (s *ScriptService) BuildTree() ([]repository.ScriptTreeNode, error) {
 	scripts, err := s.Repo.ListScripts()
 	if err != nil {
@@ -49,10 +50,15 @@ func (s *ScriptService) BuildTree() ([]repository.ScriptTreeNode, error) {
 	for _, sc := range scripts {
 		parts := strings.Split(sc.Path, "/")
 
+		// A script with empty content and interpreter_id=0 is a folder placeholder
+		isPlaceholder := sc.Content == "" && sc.InterpreterID == 0
+
 		// Walk through path parts, creating folders as needed
 		currentMap := root
 		for i, part := range parts {
-			isFile := i == len(parts)-1
+			isLastPart := i == len(parts)-1
+			isFile := isLastPart && !isPlaceholder
+
 			if _, exists := currentMap[part]; !exists {
 				node := &treeNode{
 					name:     part,
@@ -70,6 +76,19 @@ func (s *ScriptService) BuildTree() ([]repository.ScriptTreeNode, error) {
 					node.typ = "folder"
 				}
 				currentMap[part] = node
+			} else if isFile {
+				// Node already exists but was created as a folder (e.g. by another script's path).
+				// Convert it to a file if it was a folder placeholder.
+				existing := currentMap[part]
+				if existing.typ == "folder" {
+					id := sc.ID
+					content := sc.Content
+					interpreterID := sc.InterpreterID
+					existing.typ = "file"
+					existing.id = &id
+					existing.content = &content
+					existing.interpreterID = &interpreterID
+				}
 			}
 			currentMap = currentMap[part].children
 		}