Add wear percentage display and NVMe temperature collection

- Display wear percentage in storage headers for single physical drives
- Remove redundant drive type indicators, show wear data instead
- Fix wear metric parsing for physical drives (underscore count issue)
- Add NVMe temperature parsing support (Temperature: format)
- Add raw metrics debugging functionality for troubleshooting
- Clean up physical drive display to remove redundant information

agent/src/collectors/disk.rs

@@ -499,6 +499,17 @@ impl DiskCollector {
                     }
                 }
             }
+            // NVMe format: "Temperature:" (capital T)
+            if line.contains("Temperature:") {
+                if let Some(temp_part) = line.split("Temperature:").nth(1) {
+                    if let Some(temp_str) = temp_part.split_whitespace().next() {
+                        if let Ok(temp) = temp_str.parse::<f32>() {
+                            return Some(temp);
+                        }
+                    }
+                }
+            }
+            // Legacy format: "temperature:" (lowercase)
             if line.contains("temperature:") {
                 if let Some(temp_part) = line.split("temperature:").nth(1) {
                     if let Some(temp_str) = temp_part.split_whitespace().next() {