try to fix training

core/unified_data_stream.py

@@ -33,7 +33,17 @@ import json
 from .config import get_config
 from .data_provider import DataProvider, MarketTick
 from .universal_data_adapter import UniversalDataAdapter, UniversalDataStream
-from .enhanced_orchestrator import MarketState, TradingAction
+from .trading_action import TradingAction
+
+# Simple MarketState placeholder
+@dataclass
+class MarketState:
+    """Market state for unified data stream"""
+    timestamp: datetime
+    symbol: str
+    price: float
+    volume: float
+    data: Dict[str, Any] = field(default_factory=dict)
 
 logger = logging.getLogger(__name__)