removed resetShippingManifest() workaround from CheckoutController

app/Http/Controllers/Checkout/CheckoutController.php

@@ -13,7 +13,6 @@
 use Lunar\Exceptions\Carts\CartException;
 use Lunar\Exceptions\FingerprintMismatchException;
 use Lunar\Facades\CartSession;
-use Lunar\Facades\ShippingManifest;
 use Lunar\Models\Cart;
 use Lunar\Models\Country;
 use Lunar\Models\Order;
@@ -62,7 +61,6 @@ public function show(string $locale): View
         $shippingOptions = collect();
 
         if ($cart?->shippingAddress) {
-            $this->resetShippingManifest($cart);
             $shippingOptions = $this->syncShipping($cart);
             $cart->refresh();
         }
@@ -181,15 +179,6 @@ public function saveAddress(string $locale, Request $request): JsonResponse
         // Deliberately its own scope, not merged with any future newsletter opt-in.
         $this->checkout->setRecoveryConsent($request->boolean('recovery_consent'));
 
-        // ShippingManifest is a request-lifetime singleton whose getOptions()
-        // appends without ever clearing, and addOption() keeps the FIRST entry
-        // per identifier. The setBillingAddress() recalc above ran ApplyShipping
-        // against the still-stale shipping address, so an option resolved for
-        // the old region can shadow the correct one for the new region (a
-        // carrier priced differently across two matching zones). Reset it and
-        // recompute totals from a clean slate before we read anything back.
-        $this->resetShippingManifest($cart);
-
         $rateKeyAfter = $cart->shippingAddress?->only(['postcode', 'state', 'country_id']);
 
         // Nothing rate-relevant moved — persist and acknowledge, no re-render.
@@ -204,10 +193,6 @@ public function selectShippingOption(string $locale, Request $request): JsonResp
     {
         $identifier = (string) $request->input('shipping_option');
 
-        if ($cart = $this->cart->current()) {
-            $this->resetShippingManifest($cart);
-        }
-
         try {
             $this->checkout->selectShippingOption($identifier);
         } catch (InvalidShippingOptionException) {
@@ -414,18 +399,6 @@ private function fragments(?Cart $cart, ?Collection $options, array $errors = []
         ]);
     }
 
-    /**
-     * Wipe the request-lifetime ShippingManifest singleton and recompute the
-     * cart's totals, so both the options list and the cart's shippingTotal are
-     * resolved against the current address rather than an accumulation of
-     * every resolution that ran earlier in the request. See saveAddress().
-     */
-    private function resetShippingManifest(Cart $cart): void
-    {
-        ShippingManifest::clearOptions();
-        $cart->calculate();
-    }
-
     private function storeCountry(): ?Country
     {
         if (self::STORE_COUNTRY_ISO3 === null) {