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

app/Domains/Cart/routes/api.php

@@ -10,3 +10,9 @@ Route::prefix('tenants/{tenant:codigo}')
         Route::patch('cart/items/{cartItem}', [CartController::class, 'updateItemQuantity']);
         Route::delete('cart/items/{cartItem}', [CartController::class, 'removeItem']);
     });
+
+Route::prefix('tenants/{tenant:codigo}')
+    ->middleware('auth:sanctum')
+    ->group(function (): void {
+        Route::patch('checkout-carts/{cart}/items/{cartItem}', [CartController::class, 'updateCheckoutItem']);
+    });