[dboyliao]

Summary

Prevents cross-instance order and trade update collisions in xmaker.HedgeMarket when multiple strategy instances share the same session and trading pair (such as fiat hedge sessions or split-source streams).

Key Changes

• Order & Trade Isolation in HedgeMarket:
  • Replaced stream auto-binding (BindStream) on orderStore, tradeCollector, and activeMakerOrders with dedicated stream listeners in NewHedgeMarket.
  • Filter incoming updates by symbol and ensure ownership via orderStore.Exists(orderID). Updates for orders not submitted by the local HedgeMarket instance are ignored, preventing sibling instances from polluting local positions and order tracking.
• Exported ActiveOrderBook.OrderUpdateHandler:
  • Exported ActiveOrderBook.OrderUpdateHandler so callers can dispatch filtered order updates directly to an active order book.
• Tests:
  • Updated activeorderbook_test.go to call the exported OrderUpdateHandler.
  • Added synchronization with assert.Eventually in synthetichedge_test.go to wait for async hedge order registration in orderStore before emitting test trade updates.