some progress

database/migrations/2026_01_18_120803_create_domains_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('domains', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('site_id')->constrained()->onDelete('cascade');
+            $table->string('domain');
+            $table->timestamp('expires_at')->nullable();
+            $table->timestamp('last_checked_at')->nullable();
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+
+            $table->index(['site_id', 'is_active']);
+            $table->index('expires_at');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('domains');
+    }
+};