feat(addons): finalize event addon catalog and ai styling upgrade flow

resources/js/admin/api.ts

@@ -1990,7 +1990,14 @@ export async function getEventAiEditSummary(slug: string): Promise<AiEditUsageSu
 
 export async function createEventAddonCheckout(
   eventSlug: string,
-  params: { addon_key: string; quantity?: number; success_url?: string; cancel_url?: string }
+  params: {
+    addon_key: string;
+    quantity?: number;
+    success_url?: string;
+    cancel_url?: string;
+    accepted_terms?: boolean;
+    accepted_waiver?: boolean;
+  }
 ): Promise<{ checkout_url: string | null; checkout_id: string | null; expires_at: string | null }> {
   const response = await authorizedFetch(`${eventEndpoint(eventSlug)}/addons/checkout`, {
     method: 'POST',
@@ -2656,6 +2663,8 @@ export type Package = {
   included_package_slug?: string | null;
   lemonsqueezy_variant_id?: string | null;
   lemonsqueezy_product_id?: string | null;
+  can_checkout?: boolean;
+  checkout_provider?: 'paypal' | 'lemonsqueezy' | string;
   branding_allowed?: boolean | null;
   watermark_allowed?: boolean | null;
   features: string[] | Record<string, boolean> | null;