Normalize task IDs and artifact folder prefixes

audit/internal/webui/tasks.go

@@ -1149,7 +1149,32 @@ func taskArtifactsDir(root string, t *Task, status string) string {
 	if strings.TrimSpace(root) == "" || t == nil {
 		return ""
 	}
-	return filepath.Join(root, fmt.Sprintf("%s_%s_%s", t.ID, sanitizeTaskFolderPart(t.Name), taskFolderStatus(status)))
+	prefix := taskFolderNumberPrefix(t.ID)
+	return filepath.Join(root, fmt.Sprintf("%s_%s_%s", prefix, sanitizeTaskFolderPart(t.Name), taskFolderStatus(status)))
+}
+
+func taskFolderNumberPrefix(taskID string) string {
+	taskID = strings.TrimSpace(taskID)
+	if strings.HasPrefix(taskID, "TASK-") && len(taskID) >= len("TASK-000") {
+		num := strings.TrimSpace(strings.TrimPrefix(taskID, "TASK-"))
+		if len(num) == 3 {
+			allDigits := true
+			for _, r := range num {
+				if r < '0' || r > '9' {
+					allDigits = false
+					break
+				}
+			}
+			if allDigits {
+				return num
+			}
+		}
+	}
+	fallback := sanitizeTaskFolderPart(taskID)
+	if fallback == "" {
+		return "000"
+	}
+	return fallback
 }
 
 func ensureTaskReportPaths(t *Task) {