feat: Netzwerk-Modul v0.5.0 – Import, Geräte-Tracking, Ereignislog

app/Models/NetworkDevice.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class NetworkDevice extends Model
+{
+    protected $fillable = [
+        'mac_address', 'current_ip', 'hostname', 'mac_vendor',
+        'status', 'netbios_name', 'ttl', 'ports', 'notes',
+        'label', 'first_seen_at', 'last_seen_at',
+    ];
+
+    protected $casts = [
+        'first_seen_at' => 'datetime',
+        'last_seen_at'  => 'datetime',
+    ];
+
+    public function hosts(): HasMany
+    {
+        return $this->hasMany(NetworkHost::class, 'device_id');
+    }
+
+    public function events(): HasMany
+    {
+        return $this->hasMany(NetworkDeviceEvent::class, 'device_id')->latest();
+    }
+
+    public function getDisplayNameAttribute(): string
+    {
+        return $this->label
+            ?? $this->hostname
+            ?? $this->current_ip
+            ?? $this->mac_address;
+    }
+
+    public function getStatusColorAttribute(): string
+    {
+        return match($this->status) {
+            'online'  => 'green',
+            'offline' => 'red',
+            default   => 'gray',
+        };
+    }
+}