Squashed commit of the following:

commit 1dc4e29c69
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 13:58:03 2026 -0300

    refactor(reservations): unify expiration command

commit 093e894cc3
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 13:48:09 2026 -0300

    feat(cart): expire abandoned stock reservations

commit fdf0f3328f
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:53:12 2026 -0300

    refactor(stock): implement expiration for stock reservations and add configuration

commit 8d6bcdcc43
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:38:21 2026 -0300

    refactor(cart): invalidate payment on actual changes

commit 3206e293eb
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:24:48 2026 -0300

    refactor(cart): own checkout item editing

commit aed99bd05e
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:14:57 2026 -0300

    refactor(checkout): remove legacy purchase item reservations

commit f1649e0e4b
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:06:29 2026 -0300

    refactor(checkout): materialize purchase items on confirmation

commit e6c4b40a37
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Aug 19 12:06:19 2026 -0300

    feat(inventory): add traceable cart stock reservations

database/migrations/2026_08_19_000100_create_stock_reservations_table.php

@@ -0,0 +1,59 @@
+<?php
+
+use App\Domains\Cart\Models\CartItem;
+use App\Domains\Catalog\Services\StockReservationService;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('carritos', function (Blueprint $table): void {
+            $table->string('origin')->default('user')->after('status');
+        });
+
+        Schema::create('stock_reservations', function (Blueprint $table): void {
+            $table->id();
+            $table->foreignId('inventory_id')->constrained('inventories')->restrictOnDelete();
+            $table->foreignId('cart_item_id')->nullable()->constrained('carrito_items')->nullOnDelete();
+            $table->foreignId('purchase_id')->nullable()->constrained('compras')->cascadeOnDelete();
+            $table->unsignedInteger('quantity');
+            $table->string('status')->default('active');
+            $table->dateTime('expires_at')->nullable();
+            $table->dateTime('committed_at')->nullable();
+            $table->dateTime('released_at')->nullable();
+            $table->timestamps();
+
+            $table->unique(['cart_item_id', 'inventory_id']);
+            $table->index(['purchase_id', 'status']);
+            $table->index(['status', 'expires_at']);
+        });
+
+        CartItem::query()
+            ->whereHas('cart', fn ($query) => $query->where('status', 'active'))
+            ->with([
+                'catalogItem.inventory',
+                'catalogItem.bundleComponents.catalogItem.inventory',
+                'catalogItem.bundleComponents.variant.inventory',
+                'variant.inventory',
+                'variant.catalogItem',
+            ])
+            ->eachById(function (CartItem $cartItem): void {
+                $selection = $cartItem->selectedItem();
+                if ($selection !== null) {
+                    app(StockReservationService::class)->ensure($cartItem, $selection);
+                }
+            });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('stock_reservations');
+
+        Schema::table('carritos', function (Blueprint $table): void {
+            $table->dropColumn('origin');
+        });
+    }
+};

database/migrations/2026_08_19_020000_drop_reservation_status_from_compra_items_table.php

@@ -0,0 +1,24 @@
+<?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
+    {
+        Schema::table('compra_items', function (Blueprint $table): void {
+            $table->dropColumn('reservation_status');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('compra_items', function (Blueprint $table): void {
+            $table->string('reservation_status')
+                ->default('committed')
+                ->after('total');
+        });
+    }
+};