feat: 优化界面并补充网格成交分析

tests/test_services.py

@@ -298,3 +298,55 @@ def test_service_returns_open_grid_lots_with_suggested_sell_price(tmp_path):
     assert lot.suggested_sell_price == Decimal("4.12")
     assert lot.current_price == Decimal("4.12")
     assert lot.status == "可卖"
+
+
+def test_service_returns_grid_trade_matches(tmp_path):
+    service = TradingService(tmp_path / "grid.db")
+    service.ensure_defaults()
+    account = service.get_active_account()
+    instrument = service.add_instrument(Instrument(id=None, code="510300", name="沪深300ETF", market="ETF"))
+    service.save_trade(
+        Trade(
+            id=None,
+            account_id=account.id,
+            instrument_id=instrument.id,
+            trade_date=date(2026, 7, 6),
+            side=TradeSide.BUY,
+            price=Decimal("10.00"),
+            quantity=300,
+            trade_group=TradeGroup.GRID,
+        )
+    )
+    service.save_trade(
+        Trade(
+            id=None,
+            account_id=account.id,
+            instrument_id=instrument.id,
+            trade_date=date(2026, 7, 7),
+            side=TradeSide.BUY,
+            price=Decimal("9.50"),
+            quantity=200,
+            trade_group=TradeGroup.GRID,
+        )
+    )
+    service.save_trade(
+        Trade(
+            id=None,
+            account_id=account.id,
+            instrument_id=instrument.id,
+            trade_date=date(2026, 7, 8),
+            side=TradeSide.SELL,
+            price=Decimal("10.30"),
+            quantity=400,
+            trade_group=TradeGroup.GRID,
+        )
+    )
+
+    matches = service.get_grid_trade_matches(instrument.id, as_of=date(2026, 7, 9))
+
+    assert len(matches) == 2
+    assert matches[0].buy_trade_id is not None
+    assert matches[0].matched_quantity == 300
+    assert matches[0].gross_profit == Decimal("90.00")
+    assert matches[1].matched_quantity == 100
+    assert matches[1].gross_profit == Decimal("80.00")