Backend:
- Add batch insert using multi-row INSERT with ON CONFLICT
- Process in batches of 500 records for optimal DB performance
- Return detailed batch results (inserted, duplicates, errors)
Frontend:
- Parse files in chunks of 500 to prevent memory issues
- Upload in batches of 200 CFDIs per request
- Add detailed progress bar with real-time stats
- Show upload statistics (loaded, duplicates, errors)
- Add cancel functionality during upload
- Refresh data after upload completes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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