Update PDF parsing and document upload handling in team management

Enhanced the PDFParserService to support layout-based text extraction from PDFs using pdfjs-dist, improving parsing accuracy. Updated the team management view to streamline document uploads and parsing processes, removing unnecessary UI elements and consolidating upload logic. Improved error handling and user feedback during document processing, ensuring better user experience and clarity in case of issues.

backend/controllers/teamDocumentController.js

@@ -1,5 +1,6 @@
 import multer from 'multer';
 import path from 'path';
+import fs from 'fs';
 import TeamDocumentService from '../services/teamDocumentService.js';
 import PDFParserService from '../services/pdfParserService.js';
 import { getUserByToken } from '../utils/userUtils.js';
@@ -8,6 +9,11 @@ import { devLog } from '../utils/logger.js';
 // Multer-Konfiguration für Datei-Uploads
 const storage = multer.diskStorage({
     destination: (req, file, cb) => {
+        try {
+            fs.mkdirSync('uploads/temp', { recursive: true });
+        } catch (mkdirError) {
+            console.error('[multer] - Failed to ensure temp upload directory exists:', mkdirError);
+        }
         cb(null, 'uploads/temp/');
     },
     filename: (req, file, cb) => {