feat(billing): renewals, coupons, VAT numbering, billing cycles and invoice payment tracking

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/Http/Resources/Api/Admin/ProductResource.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Resources\Api\Admin;
 
+use App\Support\BillingCycleCatalog;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
 
@@ -37,6 +38,8 @@ class ProductResource extends JsonResource
             'bandwidth'    => $this->bandwidth,
             'domain_count' => $this->domain_count,
             'features'     => $this->features,
+            'short_description' => $this->short_description,
+            'description'  => $this->description,
             'setup_fee'    => $this->setup_fee,
             'min_price'    => $minPrice,
             'billing_type' => $this->whenLoaded('pricings', function () {
@@ -52,6 +55,9 @@ class ProductResource extends JsonResource
             'price_annually'     => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'annually'))->price),
             'price_biennially'   => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'biennially'))->price),
             'price_triennially'  => $this->whenLoaded('pricings', fn () => optional($this->pricings->firstWhere('billing_cycle', 'triennially'))->price),
+            'custom_prices'      => $this->whenLoaded('pricings', fn () => $this->pricings
+                ->filter(fn ($pricing) => str_starts_with((string) $pricing->billing_cycle, BillingCycleCatalog::CODE_PREFIX))
+                ->mapWithKeys(fn ($pricing) => [$pricing->billing_cycle => $pricing->price])),
             'price_onetime'      => $this->whenLoaded('pricings', fn () => optional($this->pricings->first(fn ($pricing) => in_array($pricing->billing_cycle, ['onetime', 'one_time'], true)))->price),
             'is_active'    => $this->is_active,
             'created_at'   => $this->created_at,