monitoring: increase SMART polling frequency to 30m ...

Co-Authored-By: Claude Opus 4.6 <[email protected]>

monitoring: add sudo to Telegraf PATH for SMART collection ...

Telegraf's SMART plugin with use_sudo=true needs sudo in PATH.
On NixOS, sudo lives at /run/wrappers/bin/ which wasn't included.
This caused all SMART queries to fail with exit_status=1.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

monitoring: auto-discover SMART devices instead of hardcoding ...

Remove smartDevices option and per-host device lists. Telegraf will
now scan all block devices automatically, so disks can be added or
removed without config changes.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

monitoring: add ZFS pool health exec input ...

Custom script reports zpool health as numeric metric (0=ONLINE,
1=DEGRADED, 2=FAULTED, etc.) via Telegraf inputs.exec, enabling
Grafana alerting on pool degradation.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

monitoring: fix InfluxDB URL and add nvme-cli to Telegraf PATH ...

Use door1's LAN IP (10.0.91.30) instead of WireGuard IP (172.16.1.1)
for InfluxDB endpoint. Add nvme-cli to Telegraf's PATH for NVMe SMART
attribute collection.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

monitoring: add lm_sensors and smartmontools to Telegraf PATH ...

Telegraf inputs.sensors needs the `sensors` binary in PATH.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

skydick: add Telegraf monitoring with SMART, ZFS, and system metrics ...

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]>