Driver.AbCip.Cli-001: WriteCommand.ParseValue wraps FormatException/ OverflowException as CommandException so bad --value input yields a clean CLI error instead of a raw stack trace. Driver.AbCip.Cli-002: probe/read/subscribe commands reject Structure types up front (RejectStructure helper), matching the write guard. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>