skydick: add Telegraf monitoring with SMART, ZFS, and system metrics
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Sends metrics to door1 InfluxDB (bucket: skydick) via Telegraf.
Monitors all 5 Mach2 SAS drives, NVMe P4500, and boot SSD via SMART.
InfluxDB token encrypted with agenix.
Co-Authored-By: Claude Opus 4.6 <[email protected]>
