Fix Data_3 showing as unknown by handling smartctl warning exit codes

Root cause: sda's temperature exceeded threshold in the past, causing
smartctl to return exit code 32 (warning: "Attributes have been <= threshold
in the past"). The agent checked output.status.success() and rejected the
entire output as failed, even though the data (serial, temperature, health)
was perfectly valid.

Smartctl exit codes are bit flags for informational warnings:
- Exit 0: No warnings
- Exit 32 (bit 5): Attributes were at/below threshold in past
- Exit 64 (bit 6): Error log has entries
- etc.

The output data is valid regardless of these warning flags.

Solution: Parse output as long as it's not empty, ignore exit code.
Only return UNKNOWN if output is actually empty (command truly failed).

Result: Data_3 will now show "ZDZ4VE0B T: 31°C" instead of "? Data_3: sda"

Bump version to v0.1.225

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.223"
+version = "0.1.224"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.223"
+version = "0.1.224"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -325,7 +325,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.223"
+version = "0.1.224"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.224"
+version = "0.1.225"
 edition = "2021"
 
 [dependencies]

agent/src/collectors/disk.rs

@@ -451,8 +451,10 @@ impl DiskCollector {
 
         let output_str = String::from_utf8_lossy(&output.stdout);
 
-        if !output.status.success() {
+        // Note: smartctl returns non-zero exit codes for warnings (like exit code 32
-            // Return unknown data rather than failing completely
+        // for "temperature was high in the past"), but the output data is still valid.
+        // Only check if we got any output at all, don't reject based on exit code.
+        if output_str.is_empty() {
             return Ok(SmartData {
                 health: "UNKNOWN".to_string(),
                 serial_number: None,
@@ -460,7 +462,7 @@ impl DiskCollector {
                 wear_percent: None,
             });
         }
-        
+
         let mut health = "UNKNOWN".to_string();
         let mut serial_number = None;
         let mut temperature = None;

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.224"
+version = "0.1.225"
 edition = "2021"
 
 [dependencies]

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.224"
+version = "0.1.225"
 edition = "2021"
 
 [dependencies]