core/config/payment.php

<?php

use Modules\Core\Payment\Pipelines\Cart\ApplyPaymentMethodFee;

return [
    /*
    |--------------------------------------------------------------------------
    | Lunar cart pipeline additions
    |--------------------------------------------------------------------------
    |
    | Appended to config('lunar.cart.pipelines.cart') after ApplyShipping so
    | the selected payment method's own fee (if any) is added to the
    | shipping total before the final Calculate step sums everything up.
    |
    | This is the one thing left in this file — everything about WHICH
    | payment methods exist (driver mapping, capture_mode, statuses) moved
    | onto Modules\Core\Payment\Models\PaymentMethod's own row (see
    | docs/payments.md): that's a per-instance, merchant decision, not a
    | store-wide-singular setting, so it never belonged in config at all.
    | This pipeline registration IS genuinely cross-cutting — every store
    | using this driver gets the same cart-pipeline wiring, regardless of
    | how many payment methods it configures.
    |
    */
    'cart_pipeline' => [
        ApplyPaymentMethodFee::class,
    ],
];