- Refactor PDF loading across workflow nodes to use loadPdfDocument utility

- Replaced direct calls to PDFDocument.load with loadPdfDocument in multiple nodes to standardize PDF loading process.

src/js/types/page-dimensions-type.ts

@@ -1,6 +1,22 @@
 import { PDFDocument } from 'pdf-lib';
 
 export interface PageDimensionsState {
-    file: File | null;
-    pdfDoc: PDFDocument | null;
+  file: File | null;
+  pdfDoc: PDFDocument | null;
+}
+
+export interface AnalyzedPageData {
+  pageNum: number;
+  width: number;
+  height: number;
+  orientation: string;
+  standardSize: string;
+  rotation: number;
+}
+
+export interface UniqueSizeEntry {
+  count: number;
+  label: string;
+  width: number;
+  height: number;
 }

src/js/types/sign-pdf-type.ts

@@ -1,5 +1,32 @@
+import { PDFDocument } from 'pdf-lib';
+
 export interface SignPdfState {
-    file: File | null;
-    pdfBytes: ArrayBuffer | null;
-    signatureData: string | null;
+  file: File | null;
+  pdfBytes: ArrayBuffer | null;
+  signatureData: string | null;
+}
+
+export interface PDFViewerEventBus {
+  _on: (event: string, callback: () => void) => void;
+  dispatch: (event: string, data: Record<string, unknown>) => void;
+}
+
+export interface PDFViewerApplication {
+  eventBus?: PDFViewerEventBus;
+  pdfDocument?: {
+    saveDocument: (storage: unknown) => Promise<ArrayBuffer>;
+    annotationStorage: unknown;
+  };
+}
+
+export interface PDFViewerWindow extends Window {
+  PDFViewerApplication?: PDFViewerApplication;
+}
+
+export interface SignState {
+  file: File | null;
+  pdfDoc: PDFDocument | null;
+  viewerIframe: HTMLIFrameElement | null;
+  viewerReady: boolean;
+  blobUrl: string | null;
 }