e18bf79395
- Added DocumentImportModule, DocumentImportController, and DocumentImportService for handling PDF uploads. - Integrated pdf-parse for extracting text from PDF files. - Created PdfParser for parsing PDF documents and converting them to Markdown format. - Updated frontend to support file uploads via drag-and-drop and file input for PDF documents. - Modified API routes to handle document import requests. - Enhanced error handling for unsupported file types and file size limits. - Updated README to reflect new features and usage instructions.