fix(sdk/go): return structured APIError instead of flattening error response (closes #436)#442

yw13931835525-cyber wants to merge 1 commit intoAgent-Field:mainAgent-Field/agentfield:mainfrom

yw13931835525-cyber:fix/436-sdk-error-structyw13931835525-cyber/agentfield:fix/436-sdk-error-structCopy head branch name to clipboard