PDF generation and downloads are working

backend/cmd/main.go

@@ -68,6 +68,10 @@ func main() {
 	maintenance.RegisterRoutes(protected)
 	importer.RegisterRoutes(protected)
 	pdfrender.RegisterRoutes(protected)
+
+	// Register public routes (no authentication)
+	pdfrender.RegisterPublicRoutes(r)
+
 	logger.Info("API-Routen erfolgreich registriert")
 
 	// Server starten