Christoffer Martinsson 1b3f8671c0 Add rebuild output logging for debugging
Redirect nixos-rebuild stdout/stderr to /var/log/cm-dashboard/nixos-rebuild.log
while keeping the process detached. This allows monitoring rebuild progress
and debugging why cargo builds in /tmp aren't visible when agent runs.

Use: tail -f /var/log/cm-dashboard/nixos-rebuild.log to monitor progress.
2025-10-25 15:23:20 +02:00
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