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backend/models.py

@@ -78,7 +78,7 @@ class Message(Base):
     response_time_ms = Column(Float, nullable=True)
     is_error = Column(Boolean, default=False)
     error_message = Column(Text, nullable=True)
-    metadata = Column(JSON, default=dict)
+    extra_data = Column(JSON, default=dict)
     created_at = Column(DateTime(timezone=True), server_default=func.now())
 
     # Relationships