fix library deletion and strm path handling

internal/service/strm_output_dir.go

@@ -29,6 +29,7 @@ func strmLibrarySpecificOutputDir(base string, lib *model.Library) string {
 	if outputDir == "" || outputDir == "." || lib == nil {
 		return outputDir
 	}
+	outputDir = stripSTRMLibraryCategoryAfterRoot(outputDir)
 	subdir := strmLibraryOutputSubdir(*lib)
 	if subdir == "" || strmPathHasSuffix(outputDir, subdir) || pathAlreadyEndsWith(outputDir, filepath.Base(subdir)) {
 		return outputDir
@@ -36,6 +37,34 @@ func strmLibrarySpecificOutputDir(base string, lib *model.Library) string {
 	return filepath.Join(outputDir, subdir)
 }
 
+func stripSTRMLibraryCategoryAfterRoot(pathValue string) string {
+	normalized := filepath.ToSlash(filepath.Clean(strings.TrimSpace(pathValue)))
+	parts := strings.Split(normalized, "/")
+	strmIndex := -1
+	for i, part := range parts {
+		if strings.EqualFold(strings.TrimSpace(part), "strm") {
+			strmIndex = i
+		}
+	}
+	if strmIndex < 0 || strmIndex >= len(parts)-1 {
+		return pathValue
+	}
+	tail := make([]string, 0, len(parts)-strmIndex-1)
+	for _, part := range parts[strmIndex+1:] {
+		if strings.TrimSpace(part) != "" {
+			tail = append(tail, part)
+		}
+	}
+	if len(strmCategoryPartsFromPath(tail)) == 0 {
+		return pathValue
+	}
+	root := strings.Join(parts[:strmIndex+1], "/")
+	if root == "" {
+		return pathValue
+	}
+	return filepath.FromSlash(root)
+}
+
 func strmPathHasSuffix(pathValue, suffix string) bool {
 	pathValue = strings.Trim(filepath.ToSlash(filepath.Clean(strings.TrimSpace(pathValue))), "/")
 	suffix = strings.Trim(filepath.ToSlash(filepath.Clean(strings.TrimSpace(suffix))), "/")