feat(variants): implement restoration of previously suspended variants with usable dates

database/migrations/2026_09_16_000000_restore_variants_with_remaining_event_dates.php

@@ -0,0 +1,17 @@
+<?php
+
+use App\Domains\Catalog\Services\VariantReplacementService;
+use Illuminate\Database\Migrations\Migration;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        app(VariantReplacementService::class)->restorePreviouslySuspendedVariants();
+    }
+
+    public function down(): void
+    {
+        // Historical variants and their purchases must remain intact.
+    }
+};