- Add NowFunc to GORM config for UTC auto-generated timestamps
- Add .UTC() to all time.UnixMilli() calls in trader files
- Add .UTC() to all time.Now() calls in store and api files
- Fix TypeScript unused imports in frontend
- Add BitgetTrader with full trading implementation
- Support one-way position mode with proper API parameters
- Add Bitget to all exchange switch statements
- Update exchange icons (Bybit, OKX, Bitget, Lighter)
- Add Bitget to frontend exchange config modal