Add proper hierarchical tree display for storage pools and drives:
- Pool headers with status icons and type indication (Single/multi-drive)
- Individual drive lines with ├─ tree symbols and health status
- Usage summary with └─ end symbol and capacity status
- T: and W: prefixes for temperature and wear level metrics
- Themed status icons using StatusIcons::get_icon() with proper colors
- 2-space indentation for clean tree structure appearance
Replace flat storage display with beautiful tree format:
● Storage steampool (multi-drive):
├─ ● sdb T:35°C W:12%
├─ ● sdc T:38°C W:8%
└─ ● 78.1% 1250.3GB/1600.0GB
Uses agent-calculated status from NixOS-configured thresholds.
Update CLAUDE.md with complete implementation specification.
Christoffer Martinsson
b1f294cf2f