feat(inventory): add InventorySubject enum and integrate into catalog item management

database/migrations/2026_08_12_070000_add_inventory_subject_to_catalog_items.php

@@ -0,0 +1,31 @@
+<?php
+
+use App\Domains\Catalog\Enums\InventorySubject;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('catalog_items', function (Blueprint $table): void {
+            $table->enum('inventory_subject', InventorySubject::values())
+                ->default(InventorySubject::Product->value)
+                ->after('inventory_policy');
+        });
+
+        DB::table('catalog_items')
+            ->where('tenant_code', 'desfile_pura_tendencia')
+            ->where('slug', 'entrada')
+            ->update(['inventory_subject' => InventorySubject::Seat->value]);
+    }
+
+    public function down(): void
+    {
+        Schema::table('catalog_items', function (Blueprint $table): void {
+            $table->dropColumn('inventory_subject');
+        });
+    }
+};