fix: deekseek model tool call fail cause by "\nObservation" args input

Author: quanbisen

agents/conversational.go

@@ -157,8 +157,10 @@ func (a *ConversationalAgent) parseOutput(output string) ([]schema.AgentAction,
 		return nil, nil, fmt.Errorf("%w: %s", ErrUnableToParseOutput, output)
 	}
 
+	toolInput := strings.TrimRight(matches[2], "\nObservation:")
+	toolInput = strings.TrimRight(toolInput, "\nObservation")
 	return []schema.AgentAction{
-		{Tool: strings.TrimSpace(matches[1]), ToolInput: strings.TrimSpace(matches[2]), Log: output},
+		{Tool: strings.TrimSpace(matches[1]), ToolInput: strings.TrimSpace(toolInput), Log: output},
 	}, nil, nil
 }
 

agents/executor.go

@@ -135,7 +135,9 @@ func (e *Executor) doAction(
 		}), nil
 	}
 
-	observation, err := tool.Call(ctx, strings.TrimSuffix(action.ToolInput, "\nObservation:"))
+	toolInput := strings.TrimSuffix(action.ToolInput, "\nObservation:")
+	toolInput = strings.TrimSuffix(toolInput, "\nObservation")
+	observation, err := tool.Call(ctx, toolInput)
 	if err != nil {
 		return nil, err
 	}