fix(smart v0.1.14): filtre NVMe correct + SmartStatus défensif

- Filtre nvme : n[4..].contains('n') au lieu de n.contains('n')
  pour distinguer nvme0n1 (namespace) de nvme0 (contrôleur)
- SmartStatus.passed : #[serde(default)] pour éviter crash si absent

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

agent/Cargo.lock

@@ -248,7 +248,7 @@ dependencies = [
 
 [[package]]
 name = "nanometrics-agent"
-version = "0.1.12"
+version = "0.1.14"
 dependencies = [
  "libc",
  "rumqttc",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "nanometrics-agent"
-version = "0.1.12"
+version = "0.1.14"
 edition = "2021"
 
 [lib]

agent/src/metrics/smart.rs

@@ -9,10 +9,16 @@ struct SmartJson {
 }
 
 #[derive(Deserialize)]
-struct SmartStatus { passed: bool }
+struct SmartStatus {
+    #[serde(default)]
+    passed: bool,
+}
 
 #[derive(Deserialize)]
-struct SmartTemp { current: i64 }
+struct SmartTemp {
+    #[serde(default)]
+    current: Option<i64>,
+}
 
 #[derive(Deserialize)]
 struct SmartAttrs { table: Vec<SmartAttr> }
@@ -44,7 +50,7 @@ pub fn is_available() -> bool {
 pub fn parse_json(json: &str) -> Result<crate::payload::SmartMetrics, serde_json::Error> {
     let s: SmartJson = serde_json::from_str(json)?;
 
-    let temperature = s.temperature.as_ref().map(|t| t.current)
+    let temperature = s.temperature.as_ref().and_then(|t| t.current)
         .or_else(|| s.nvme_smart_health_information_log.as_ref()?.temperature);
 
     let mut reallocated = None;
@@ -93,7 +99,8 @@ pub fn collect() -> Option<Vec<crate::payload::SmartMetrics>> {
         .filter_map(|n| {
             if n.starts_with("sd") {
                 Some(format!("/dev/{}", n))
-            } else if n.starts_with("nvme") && n.contains('n') {
+            } else if n.starts_with("nvme") && n[4..].contains('n') {
+                // nvme0n1, nvme1n1 — namespace block device ; "nvme0" (contrôleur) ne passerait pas
                 Some(format!("/dev/{}", n))
             } else {
                 None