fix(server): logging UDP — debug SMART + format erreur JSON

Cargo.lock mis à jour pour refléter la version 0.1.11 de l'agent.
Logging temporaire côté serveur pour tracer les payloads SMART.

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

agent/Cargo.lock

@@ -248,7 +248,7 @@ dependencies = [
 
 [[package]]
 name = "nanometrics-agent"
-version = "0.1.10"
+version = "0.1.11"
 dependencies = [
  "libc",
  "rumqttc",

server/transport/udp.go

@@ -2,7 +2,6 @@ package transport
 
 import (
 	"encoding/json"
-	"fmt"
 	"log"
 	"net"
 
@@ -34,19 +33,21 @@ func StartUDP(addr string, handler func(*models.AgentMetrics)) error {
 func processUDP(data []byte, src string, handler func(*models.AgentMetrics)) {
 	var m models.AgentMetrics
 	if err := json.Unmarshal(data, &m); err != nil {
-		preview := ""
-		if len(data) > 0 {
-			end := len(data)
-			if end > 32 {
-				end = 32
-			}
-			preview = fmt.Sprintf(" | src=%s | premiers octets: %x | texte: %q", src, data[:end], data[:end])
+		end := 32
+		if len(data) < end {
+			end = len(data)
 		}
-		log.Printf("[udp] JSON invalide: %v%s", err, preview)
+		log.Printf("[udp] JSON invalide: %v | src=%s | octets: %x", err, src, data[:end])
 		return
 	}
 	if m.Hostname == "" {
 		return
 	}
+	// DEBUG SMART — logguer le payload ASUS complet
+	if m.Smart != nil {
+		log.Printf("[udp] SMART reçu de %s: %d disque(s)", m.Hostname, len(m.Smart))
+	} else {
+		log.Printf("[udp] payload de %s (v%s): smart=nil hdd=%v", m.Hostname, m.Version, m.HDDTotal)
+	}
 	handler(&m)
 }