Extract Ladill Servers as standalone app at servers.ladill.com.

VPS and dedicated server ordering, managed panels, SSO, billing, and launcher integration — forked from hosting infrastructure with server-focused routes and dashboard.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Models/DomainDkimKey.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class DomainDkimKey extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'domain_id',
+        'selector',
+        'public_key_txt',
+        'private_key_path',
+        'status',
+        'generated_at',
+    ];
+
+    protected $casts = [
+        'generated_at' => 'datetime',
+    ];
+
+    public function domain(): BelongsTo
+    {
+        return $this->belongsTo(Domain::class);
+    }
+}