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

app/Models/NetworkDevice.php

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+<?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',
+        };
+    }
+}

app/Models/NetworkDeviceEvent.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class NetworkDeviceEvent extends Model
+{
+    protected $fillable = [
+        'device_id', 'scan_id', 'event_type', 'old_value',
+        'new_value', 'description', 'documented',
+        'documented_by', 'documented_at',
+    ];
+
+    protected $casts = [
+        'documented'    => 'boolean',
+        'documented_at' => 'datetime',
+    ];
+
+    public function device(): BelongsTo
+    {
+        return $this->belongsTo(NetworkDevice::class, 'device_id');
+    }
+
+    public function documentedBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'documented_by');
+    }
+
+    public function getEventLabelAttribute(): string
+    {
+        return match($this->event_type) {
+            'new_device'    => 'Neues Gerät',
+            'ip_changed'    => 'IP-Adresse geändert',
+            'came_online'   => 'Gerät online',
+            'went_offline'  => 'Gerät offline',
+            'manual_note'   => 'Manuelle Notiz',
+            'label_changed' => 'Bezeichnung geändert',
+            default         => $this->event_type,
+        };
+    }
+
+    public function getEventColorAttribute(): string
+    {
+        return match($this->event_type) {
+            'new_device'    => 'blue',
+            'ip_changed'    => 'yellow',
+            'came_online'   => 'green',
+            'went_offline'  => 'red',
+            'manual_note'   => 'purple',
+            'label_changed' => 'gray',
+            default         => 'gray',
+        };
+    }
+}

app/Models/NetworkHost.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class NetworkHost extends Model
+{
+    protected $fillable = [
+        'scan_id', 'device_id', 'ip_address', 'mac_address',
+        'hostname', 'mac_vendor', 'status', 'ping_ms',
+        'netbios_info', 'ttl', 'ports', 'http_sender', 'web_detection',
+    ];
+
+    public function scan(): BelongsTo
+    {
+        return $this->belongsTo(NetworkScan::class, 'scan_id');
+    }
+
+    public function device(): BelongsTo
+    {
+        return $this->belongsTo(NetworkDevice::class, 'device_id');
+    }
+}

app/Models/NetworkScan.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class NetworkScan extends Model
+{
+    protected $fillable = [
+        'subnet', 'source', 'scanner', 'total_hosts',
+        'online_hosts', 'new_devices', 'changed_devices',
+        'notes', 'created_by',
+    ];
+
+    protected $casts = [
+        'created_at' => 'datetime',
+    ];
+
+    public function hosts(): HasMany
+    {
+        return $this->hasMany(NetworkHost::class, 'scan_id');
+    }
+
+    public function creator(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'created_by');
+    }
+}