Improve backend

services/forecasting/app/models/__init__.py

@@ -14,6 +14,8 @@ AuditLog = create_audit_log_model(Base)
 # Import all models to register them with the Base metadata
 from .forecasts import Forecast, PredictionBatch
 from .predictions import ModelPerformanceMetric, PredictionCache
+from .validation_run import ValidationRun
+from .sales_data_update import SalesDataUpdate
 
 # List all models for easier access
 __all__ = [
@@ -21,5 +23,7 @@ __all__ = [
     "PredictionBatch",
     "ModelPerformanceMetric",
     "PredictionCache",
+    "ValidationRun",
+    "SalesDataUpdate",
     "AuditLog",
 ]