fix(app):

1.Handling of large file upload issues;
2. Handling of abnormal display of conversation titles when the opening remarks function is enabled

api/app/models/conversation_model.py

@@ -57,6 +57,12 @@ class Conversation(Base):
     workspace = relationship("Workspace")
     messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")
 
+    @property
+    def is_first_user_message(self):
+        """判断当前是否是用户的第一条消息（无视开场白）"""
+        user_message_count = sum(1 for msg in self.messages if msg.role == "user")
+        return user_message_count == 1
+
 
 class ConversationDetail(Base):
     __tablename__ = "conversation_details"