Fix lsblk parsing for filesystem discovery

Remove unused debug code and fix device name parsing to properly
handle lsblk tree characters. This resolves the issue where only
/boot filesystem was discovered instead of both /boot and /.

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.115"
+version = "0.1.116"
 edition = "2021"
 
 [dependencies]

agent/src/collectors/disk.rs

@@ -119,10 +119,7 @@ impl DiskCollector {
             let parts: Vec<&str> = line.split_whitespace().collect();
             if parts.len() >= 2 {
                 let device_name = parts[0]
-                    .trim_start_matches('├')
-                    .trim_start_matches('└')
-                    .trim_start_matches('─')
-                    .trim();
+                    .trim_start_matches(&['├', '└', '─', ' '][..]);
                 let mount_point = parts[1];
                 
                 // Skip unwanted mount points
@@ -665,11 +662,6 @@ impl DiskCollector {
         });
 
         // Individual filesystem metrics
-        debug!("Drive {} has {} filesystems", drive_name, drive.filesystems.len());
-        for filesystem in &drive.filesystems {
-            debug!("Filesystem {}: {} bytes used / {} bytes total", 
-                filesystem.mount_point, filesystem.used_bytes, filesystem.total_bytes);
-        }
         for filesystem in &drive.filesystems {
             let fs_name = if filesystem.mount_point == "/" {
                 "root".to_string()