Implement unified pool visualization for single drives

- Group single disk filesystems by physical drive during auto-discovery
- Create physical drive pools with filesystem children
- Display temperature, wear, and health at drive level
- Provide consistent hierarchical storage visualization
- Fix borrow checker issues in create_physical_drive_pool method
- Add PhysicalDrive case to all StoragePoolType match statements

CLAUDE.md

@@ -219,6 +219,45 @@ Storage:
 - **Backwards Compatible**: Single disks continue working unchanged
 - **Future Ready**: Easy extension for additional storage technologies
 
+### Current Status (v0.1.100)
+
+**✅ Completed:**
+- Auto-discovery system implemented and deployed
+- `/proc/mounts` parsing with smart heuristics for parity detection
+- Storage topology stored at agent startup for efficient monitoring
+- Universal zero-configuration for all hosts (cmbox, steambox, simonbox, srv01, srv02, srv03)
+- Enhanced pool health calculation (healthy/degraded/critical)
+- Hierarchical tree visualization with data/parity disk separation
+
+**🔄 In Progress - Unified Pool Visualization:**
+
+Current auto-discovery works but displays filesystems separately instead of grouped by physical drives. Need to implement unified pool concept where single drives are treated as pools.
+
+**Current Display (needs improvement):**
+```
+● /boot: (separate entry)
+● /nix_store: (separate entry) 
+● /: (separate entry)
+```
+
+**Target Display (unified pools):**
+```
+● nvme0n1:
+  ├─ Drive: T: 35°C W: 1%
+  ├─ /boot: 11% 0.1GB/1.0GB
+  ├─ /nix_store: 23% 214.9GB/928.2GB
+  └─ /: 23% 214.9GB/928.2GB
+```
+
+**Required Changes:**
+1. **Enhanced Auto-Discovery**: Group filesystems by backing physical drive during discovery
+2. **UI Pool Logic**: Treat single drives as "pools" with drive name as header
+3. **Drive Info Display**: Show temperature, wear, health at pool level for single drives
+4. **Filesystem Children**: Display mount points as children under their physical drives
+5. **Hybrid Rendering**: Physical grouping for single drives, logical grouping for mergerfs pools
+
+**Expected Result**: Consistent hierarchical storage visualization where everything follows pool->children pattern, regardless of underlying storage technology.
+
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