Feature/v2/filewithid implementation (#4369)

Added Filewithid type
Updated code where file was being used to use filewithid
Updated places we identified files by name or composite keys to use UUID
Updated places we should have been using quickkey
Updated pageeditor issue where we parsed pagenumber from pageid instead
of using pagenumber directly

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Co-authored-by: Copilot <[email protected]>
Co-authored-by: James Brunton <[email protected]>

frontend/src/hooks/usePDFProcessor.ts

@@ -1,6 +1,7 @@
 import { useState, useCallback } from 'react';
 import { PDFDocument, PDFPage } from '../types/pageEditor';
 import { pdfWorkerManager } from '../services/pdfWorkerManager';
+import { createQuickKey } from '../types/fileContext';
 
 export function usePDFProcessor() {
   const [loading, setLoading] = useState(false);
@@ -75,7 +76,7 @@ export function usePDFProcessor() {
       // Create pages without thumbnails initially - load them lazily
       for (let i = 1; i <= totalPages; i++) {
         pages.push({
-          id: `${file.name}-page-${i}`,
+          id: `${createQuickKey(file)}-page-${i}`,
           pageNumber: i,
           originalPageNumber: i,
           thumbnail: null, // Will be loaded lazily