Build 060.2: add REST trade transport model

app/src/market_data/acquisition/adapters/dzengi/models.py

@@ -150,6 +150,17 @@ class DzengiKlinesResponse:
     items: tuple[DzengiKline, ...]
 
 
+# Транспортное представление одной агрегированной сделки
+# Dzengi GET /api/v2/aggTrades.
+@dataclass(frozen=True, slots=True)
+class DzengiRestAggTrade:
+    aggregate_trade_id: int
+    price: DzengiRawNumeric
+    quantity: DzengiRawNumeric
+    timestamp: int
+    buyer_is_maker: bool
+
+
 # Транспортное представление одного события Dzengi WebSocket ohlc.event.
 #
 # Событие содержит завершённую OHLC-свечу без объёма и поэтому не является

app/tests/unit/market_data/acquisition/adapters/dzengi/test_models.py

@@ -13,6 +13,7 @@ from src.market_data.acquisition.adapters.dzengi.models import (
     DzengiLotSizeFilter,
     DzengiMinNotionalFilter,
     DzengiRateLimit,
+    DzengiRestAggTrade,
     DzengiUnknownFilter,
 )
 
@@ -204,3 +205,48 @@ def test_raw_models_are_immutable() -> None:
 
     with pytest.raises(FrozenInstanceError):
         response.status = "OK"  # type: ignore[misc]
+
+def test_rest_agg_trade_stores_complete_transport_contract() -> None:
+    trade = DzengiRestAggTrade(
+        aggregate_trade_id=2134857062,
+        price="64497.25",
+        quantity="0.005",
+        timestamp=1784218066823,
+        buyer_is_maker=False,
+    )
+
+    assert trade.aggregate_trade_id == 2134857062
+    assert trade.price == "64497.25"
+    assert trade.quantity == "0.005"
+    assert trade.timestamp == 1784218066823
+    assert trade.buyer_is_maker is False
+
+
+def test_rest_agg_trade_preserves_raw_numeric_values() -> None:
+    trade = DzengiRestAggTrade(
+        aggregate_trade_id=2134846831,
+        price=64555.55,
+        quantity=2,
+        timestamp=1784218012030,
+        buyer_is_maker=True,
+    )
+
+    assert trade.price == 64555.55
+    assert isinstance(trade.price, float)
+    assert trade.quantity == 2
+    assert isinstance(trade.quantity, int)
+
+
+def test_rest_agg_trade_is_immutable_and_uses_slots() -> None:
+    trade = DzengiRestAggTrade(
+        aggregate_trade_id=2134857062,
+        price="64497.25",
+        quantity="0.005",
+        timestamp=1784218066823,
+        buyer_is_maker=False,
+    )
+
+    assert not hasattr(trade, "__dict__")
+
+    with pytest.raises(FrozenInstanceError):
+        trade.price = "1.00"  # type: ignore[misc]