Add format_transfer_rate() to convert mdstat rates (e.g., 133628K/sec) into readable values like "130.5 MB/s" using 1024-based units. Add format_remaining_time() to convert mdstat durations (e.g., 450.1min) into compact German format like "7 Std. 30 Min." with day/hour/minute components. Update raid_status() to parse member devices directly from array_line in /proc/mdstat to avoid cross