Add PowerDNS config and DKIM/NS check tables required for zone provisioning.

Hosting had PDNS env vars but no config/pdns.php and was missing domain_dkim_keys, so linked domains never got authoritative zones.

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

database/migrations/2026_07_13_170000_create_domain_dkim_keys_and_ns_checks_tables.php

@@ -0,0 +1,56 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        if (! Schema::hasTable('domain_dkim_keys')) {
+            Schema::create('domain_dkim_keys', function (Blueprint $table) {
+                $table->id();
+                $table->foreignId('domain_id')->constrained('domains')->cascadeOnDelete();
+                $table->string('selector');
+                $table->longText('public_key_txt');
+                $table->string('private_key_path')->nullable();
+                $table->string('status')->default('active');
+                $table->timestamp('generated_at')->nullable();
+                $table->timestamps();
+
+                $table->unique(['domain_id', 'selector']);
+            });
+        }
+
+        if (! Schema::hasTable('domain_ns_checks')) {
+            Schema::create('domain_ns_checks', function (Blueprint $table) {
+                $table->id();
+                $table->foreignId('domain_id')->constrained('domains')->cascadeOnDelete();
+                $table->string('check_type')->default('onboarding');
+                $table->string('result')->default('pending');
+                $table->json('expected_nameservers')->nullable();
+                $table->json('observed_nameservers')->nullable();
+                $table->boolean('has_authoritative_answer')->nullable();
+                $table->unsignedSmallInteger('manual_records_total')->default(0);
+                $table->unsignedSmallInteger('manual_records_verified')->default(0);
+                $table->string('status_before')->nullable();
+                $table->string('status_after')->nullable();
+                $table->string('state_before')->nullable();
+                $table->string('state_after')->nullable();
+                $table->text('notes')->nullable();
+                $table->timestamp('checked_at')->nullable();
+                $table->timestamps();
+
+                $table->index(['domain_id', 'checked_at']);
+                $table->index(['domain_id', 'result']);
+            });
+        }
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('domain_ns_checks');
+        Schema::dropIfExists('domain_dkim_keys');
+    }
+};