feat: Add standalone script for enhanced Bygma CSV import with validation
test: Create simple database test to show current state and product counts
test: Develop enhanced validation demo to simulate problematic CSV data handling
test: Implement price validation tests with higher limits for edge cases
test: Conduct real enhanced validation test with actual Bygma CSV file
test: Test validation improvements with known problematic data
test: Validate logic of cleaning and validating CSV rows without database
test: Test improved VareNr cleaning functionality to remove spaces