- Remove EUR_TRADE_MIN, EUR_TRADE_MAX, PREMIUM_PERCENTAGE from shared_constants.py
- Remove eurTradeMin, eurTradeMax, premiumPercentage from shared/constants.json
- Update validate_constants.py to not require removed fields
- Update seed.py and seed_e2e.py to use defaults if fields don't exist
- Update tests to handle missing constants gracefully
- Add seed_pricing_config() function to seed.py
- Seed initial values from shared/constants.json
- Add seeding to seed_e2e.py for E2E tests
- Add tests for seeding functionality
- Create PricingConfig model with all required fields (premium settings, trade limits)
- Implement PricingRepository with singleton pattern (get_current, create_or_update)
- Add comprehensive tests for repository functionality
- Export model and repository in __init__.py files
