The Storage Devices section on System Information showed "No storage
devices detected" because the disk info file (/storage/nomad-disk-info.json)
returned an empty array. The fsSize data from systeminformation was
available but not used as a fallback.
Applies the same fallback pattern from the Easy Setup wizard (PR #90):
- Try disk array first, filtering to entries with totalSize > 0
- Fall back to fsSize data when disk array is empty
- Deduplicate fsSize entries by size (same disk mounted multiple places)
- Filter to real block devices (/dev/), excluding virtual filesystems
- Update Storage Devices count in System Status to match
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
