Fix document-user relationship and optimize data fetching

[m-rousseau]

Changes Made

This PR addresses the document-user relationship issues and implements several optimizations:

Key Changes

• Fixed document-user relationship by implementing separate queries for better data consistency
• Optimized data fetching by using batch operations for user emails
• Updated admin interface to handle document management more efficiently
• Added proper error handling for document operations
• Implemented type safety improvements

Technical Details

• Modified fetchAllDocuments to use separate queries and batch processing
• Updated type definitions for better type safety
• Improved error handling across document operations
• Optimized database queries to reduce load

Testing

• Verified that documents are correctly associated with users
• Confirmed that user emails are properly fetched and displayed
• Tested error handling scenarios
• Checked performance with batch operations

Related Issues

• Fixes PGRST200 error related to document-user relationships
• Improves overall data fetching efficiency

Please review the changes and let me know if any adjustments are needed.