Replace device names with serial numbers in MergerFS pool display

Updates disk collector and dashboard to show drive serial numbers
instead of device names (sdX) for MergerFS data/parity drives.
Agent extracts serial numbers from SMART data and dashboard
displays them when available, falling back to device names.

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.153"
+version = "0.1.154"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.153"
+version = "0.1.154"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.153"
+version = "0.1.154"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.153"
+version = "0.1.154"
 edition = "2021"
 
 [dependencies]

agent/src/collectors/disk.rs

@@ -437,12 +437,14 @@ impl DiskCollector {
             // Return unknown data rather than failing completely
             return Ok(SmartData {
                 health: "UNKNOWN".to_string(),
+                serial_number: None,
                 temperature_celsius: None,
                 wear_percent: None,
             });
         }
         
         let mut health = "UNKNOWN".to_string();
+        let mut serial_number = None;
         let mut temperature = None;
         let mut wear_percent = None;
 
@@ -455,6 +457,15 @@ impl DiskCollector {
                 }
             }
             
+            // Serial number parsing
+            if line.starts_with("Serial Number:") {
+                if let Some(serial_part) = line.split("Serial Number:").nth(1) {
+                    if let Some(serial_str) = serial_part.split_whitespace().next() {
+                        serial_number = Some(serial_str.to_string());
+                    }
+                }
+            }
+            
             // Temperature parsing for different drive types
             if line.contains("Temperature_Celsius") || line.contains("Airflow_Temperature_Cel") {
                 // Traditional SATA drives: attribute table format
@@ -497,6 +508,7 @@ impl DiskCollector {
 
         Ok(SmartData {
             health,
+            serial_number,
             temperature_celsius: temperature,
             wear_percent,
         })
@@ -587,6 +599,7 @@ impl DiskCollector {
             
             cm_dashboard_shared::PoolDriveData {
                 name: d.name.clone(),
+                serial_number: smart.and_then(|s| s.serial_number.clone()),
                 temperature_celsius: temperature,
                 health,
                 wear_percent: smart.and_then(|s| s.wear_percent),
@@ -611,6 +624,7 @@ impl DiskCollector {
             
             cm_dashboard_shared::PoolDriveData {
                 name: d.name.clone(),
+                serial_number: smart.and_then(|s| s.serial_number.clone()),
                 temperature_celsius: temperature,
                 health,
                 wear_percent: smart.and_then(|s| s.wear_percent),
@@ -808,6 +822,7 @@ impl Collector for DiskCollector {
 #[derive(Debug, Clone)]
 struct SmartData {
     health: String,
+    serial_number: Option<String>,
     temperature_celsius: Option<f32>,
     wear_percent: Option<f32>,
 }

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.153"
+version = "0.1.154"
 edition = "2021"
 
 [dependencies]

dashboard/src/ui/widgets/system.rs

@@ -311,8 +311,9 @@ impl SystemWidget {
                     Status::Unknown
                 };
                 
+                let display_name = drive.serial_number.clone().unwrap_or(drive.name.clone());
                 let storage_drive = StorageDrive {
-                    name: drive.name.clone(),
+                    name: display_name,
                     temperature: drive.temperature_celsius,
                     wear_percent: drive.wear_percent,
                     status: drive_status,
@@ -333,8 +334,9 @@ impl SystemWidget {
                     Status::Unknown
                 };
                 
+                let display_name = drive.serial_number.clone().unwrap_or(drive.name.clone());
                 let storage_drive = StorageDrive {
-                    name: drive.name.clone(),
+                    name: display_name,
                     temperature: drive.temperature_celsius,
                     wear_percent: drive.wear_percent,
                     status: drive_status,

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.153"
+version = "0.1.154"
 edition = "2021"
 
 [dependencies]

shared/src/agent_data.rs

@@ -104,6 +104,7 @@ pub struct PoolData {
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct PoolDriveData {
     pub name: String,
+    pub serial_number: Option<String>,
     pub temperature_celsius: Option<f32>,
     pub wear_percent: Option<f32>,
     pub health: String,