Refactor[BE] adjustment stock handling: remove stock_log_id, update relations, and enhance transfer logging

internal/entities/adjustment_stock.go

@@ -4,7 +4,6 @@ import "time"
 
 type AdjustmentStock struct {
 	Id                 uint      `gorm:"primaryKey"`
-	StockLogId         uint      `gorm:"column:stock_log_id;not null;index"`
 	ProductWarehouseId uint      `gorm:"column:product_warehouse_id;not null"`
 	TotalQty           float64   `gorm:"column:total_qty;default:0"`
 	TotalUsed          float64   `gorm:"column:total_used;default:0"`
@@ -13,6 +12,6 @@ type AdjustmentStock struct {
 	CreatedAt          time.Time `gorm:"column:created_at;autoCreateTime"`
 	UpdatedAt          time.Time `gorm:"column:updated_at;autoUpdateTime"`
 
-	StockLog         *StockLog         `gorm:"foreignKey:StockLogId;references:Id"`
 	ProductWarehouse *ProductWarehouse `gorm:"foreignKey:ProductWarehouseId;references:Id"`
+	StockLog         *StockLog         `gorm:"polymorphic:Loggable;polymorphicType:LoggableType;polymorphicId:LoggableId;polymorphicValue:ADJUSTMENT"`
 }