feat(workflow): add altenate merge tool and translate workflow node and engine errors across locales

src/js/workflow/nodes/powerpoint-to-pdf-node.ts

@@ -4,6 +4,7 @@ import { pdfSocket } from '../sockets';
 import type { PDFData, SocketData, MultiPDFData } from '../types';
 import { getLibreOfficeConverter } from '../../utils/libreoffice-loader.js';
 import { loadPdfDocument } from '../../utils/load-pdf-document.js';
+import { wfError } from '../errors';
 
 export class PowerPointToPdfNode extends BaseWorkflowNode {
   readonly category = 'Input' as const;
@@ -52,7 +53,7 @@ export class PowerPointToPdfNode extends BaseWorkflowNode {
     _inputs: Record<string, SocketData[]>
   ): Promise<Record<string, SocketData>> {
     if (this.files.length === 0)
-      throw new Error('No presentations uploaded in PowerPoint Input node');
+      throw new Error(wfError('noPowerPointUploaded'));
 
     const converter = getLibreOfficeConverter();
     await converter.initialize();