Change notification ID type from int to string (CHAR(12)) to match the schema migration. - Update AdminNotification.ID field to string - Change cursor format from int-based to string-based for pagination - Use validators.IsValidID instead of strconv.Atoi for notification ID validation - Update cursor format to use RFC3339Nano for precision Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>