Question about Dreame A1 Pro

Hello I have a question about the A1 Pro: What is the minimum distance it keeps to a post (e.g. pergola) that stands directly in the meadow? For lawn edging stones that are approx. 8 cm wide and flush with the lawn: How accurately can the A1 Pro drive over them or mow right up to the edge? Does it follow the path exactly? What is the situation with a wall in front of which there is also a level lawn edging stone (approx. 8 cm) - how close does it drive or mow to the wall in this case? Many thanks for the information.