In this poem Golden Cat, the sun symbolises the colour of the cat's fur, which is shining brightly. The sun also symbolises the provision of light apart from the other distinct functions that it possesses. The representation done by the animal is towards the sun which makes the fur shine.
The answers are, 1.) It supports the idea that the burglary was planned in advance by men who were not career criminals or “typical” burglars. 2.) It suggests that the burglary was complicated and needed to be deliberately planned. 3.) It creates an unbiased tone, which allows the facts to speak for themselves.