feat: 归档佣金计算触发和快照变更，同步规范文档

- 归档 OpenSpec 变更到 archive 目录
- 创建 2 个新的主规范文件：commission-trigger 和 order-commission-snapshot
- 实现订单佣金快照字段和支付自动触发
- 确保事务一致性，所有佣金操作在同一事务内完成
- 提取成本价计算为公共工具函数

internal/bootstrap/services.go

@@ -119,6 +119,6 @@ func initServices(s *stores, deps *Dependencies) *services {
 		ShopPackageBatchPricing:    shopPackageBatchPricingSvc.New(deps.DB, s.ShopPackageAllocation, s.ShopPackageAllocationPriceHistory, s.Shop),
 		CommissionStats:            commissionStatsSvc.New(s.ShopSeriesCommissionStats),
 		PurchaseValidation:         purchaseValidation,
-		Order:                      orderSvc.New(deps.DB, s.Order, s.OrderItem, s.Wallet, purchaseValidation, s.ShopSeriesAllocationConfig),
+		Order:                      orderSvc.New(deps.DB, s.Order, s.OrderItem, s.Wallet, purchaseValidation, s.ShopSeriesAllocationConfig, deps.QueueClient, deps.Logger),
 	}
 }