Integrate SnapRAID parity drives into mergerfs pools

- Add SnapRAID parity drive detection to mergerfs discovery
- Remove Pool Status health line as discussed
- Update drive display to always show wear data when available
- Include /mnt/parity drives as part of mergerfs pool structure

agent/src/collectors/disk.rs

@@ -210,7 +210,7 @@ impl DiskCollector {
                     .collect();
                 
                 // Convert numeric references to actual mount points if needed
-                let member_paths = if raw_paths.iter().any(|path| !path.starts_with('/')) {
+                let mut member_paths = if raw_paths.iter().any(|path| !path.starts_with('/')) {
                     // Handle numeric format like "1:2" by finding corresponding /mnt/disk* paths
                     self.resolve_numeric_mergerfs_paths(&raw_paths)?
                 } else {
@@ -218,6 +218,10 @@ impl DiskCollector {
                     raw_paths
                 };
                 
+                // For SnapRAID setups, also include parity drives as part of the pool
+                let snapraid_parity_paths = self.discover_snapraid_parity_drives()?;
+                member_paths.extend(snapraid_parity_paths);
+                
                 // Categorize as data vs parity drives
                 let (data_drives, parity_drives) = match self.categorize_pool_drives(&member_paths) {
                     Ok(drives) => drives,
@@ -240,6 +244,16 @@ impl DiskCollector {
         Ok(pools)
     }
 
+    /// Discover SnapRAID parity drives
+    fn discover_snapraid_parity_drives(&self) -> Result<Vec<String>> {
+        let mount_devices = self.get_mount_devices()?;
+        let parity_paths: Vec<String> = mount_devices.keys()
+            .filter(|path| path.contains("parity"))
+            .cloned()
+            .collect();
+        Ok(parity_paths)
+    }
+
     /// Categorize pool member drives as data vs parity
     fn categorize_pool_drives(&self, member_paths: &[String]) -> Result<(Vec<DriveInfo>, Vec<DriveInfo>)> {
         let mut data_drives = Vec::new();