Use invisible signature widget for borderless FirmaEC and bump to 1.2.24

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "linkedsign-backend",
-  "version": "1.2.23",
+  "version": "1.2.24",
   "private": true,
   "description": "Initial backend for LinkedSign",
   "main": "src/server.js",

backend/src/modules/signing/signing.service.js

@@ -420,17 +420,23 @@ const signPdf = async ({
   // ── Add cryptographic signature placeholder ───────────────────────
   const pdfDocForSign = await PDFDocument.load(pdfWithStamp);
   const placeholderPageIndex = Math.min(page, pdfDocForSign.getPageCount() - 1);
+  const placeholderPage = pdfDocForSign.getPages()[placeholderPageIndex];
+  const useInvisibleWidget = style === 'firmaec' && qrBorder === 'none';
+  const widgetRect = useInvisibleWidget
+    ? [0, 0, 0, 0]
+    : [sx, sy, sx + sw, sy + sh];
   pdflibAddPlaceholder({
-    pdfDoc: pdfDocForSign,
+    pdfPage: placeholderPage,
     reason: reason || 'Firma digital',
     contactInfo: signerName,
     name: signerName,
     location: location || '',
     signatureLength: 32768,
-    rect: [sx, sy, sx + sw, sy + sh],
-    pageIndex: placeholderPageIndex,
+    widgetRect,
   });
-  hideSignatureWidgetBorder(pdfDocForSign, placeholderPageIndex);
+  if (!useInvisibleWidget) {
+    hideSignatureWidgetBorder(pdfDocForSign, placeholderPageIndex);
+  }
 
   const pdfWithPlaceholder = Buffer.from(await pdfDocForSign.save({ useObjectStreams: false }));