Fix Wren API request body to match official API specification

Changed request parameters to match Wren API docs:
- 'portfolio' → 'portfolioId' (correct parameter name)
- 'dry_run' → 'dryRun' (camelCase as per API)
- Removed 'currency' and 'amount_charged' (API calculates amount)
- Removed 'source' object (not in API spec)
- Added 'note' with customer email for record keeping

API will now calculate and return the amount charged based on tons and portfolio.
Reference: https://www.wren.co/api/offset-orders documentation

server/routes/webhooks.js

@@ -231,8 +231,6 @@ async function fulfillOrder(order, session) {
       tons: order.tons,
       portfolioId: order.portfolio_id,
       customerEmail: session.customer_details?.email || order.customer_email,
-      currency: order.currency,
-      amountCents: order.total_amount,
       dryRun: isDryRun,
     });
 

server/utils/wrenClient.js

@@ -7,18 +7,14 @@ const WREN_API_BASE_URL = 'https://www.wren.co/api';
  * @param {Object} orderData - Order data
  * @param {number} orderData.tons - Number of tons to offset
  * @param {number} orderData.portfolioId - Portfolio ID
- * @param {string} orderData.customerEmail - Customer email
- * @param {string} orderData.currency - Currency code
- * @param {number} orderData.amountCents - Amount in cents
+ * @param {string} orderData.customerEmail - Customer email (included in note)
  * @param {boolean} orderData.dryRun - Dry run mode (default: false)
- * @returns {Promise<Object>} Wren order response
+ * @returns {Promise<Object>} Wren order response with amountCharged, currency, portfolio, tons
  */
 export async function createWrenOffsetOrder({
   tons,
   portfolioId,
   customerEmail,
-  currency,
-  amountCents,
   dryRun = false
 }) {
   const startTime = Date.now();
@@ -32,10 +28,8 @@ export async function createWrenOffsetOrder({
   console.log('🔵 [WREN API SERVER] Parameters:', JSON.stringify({
     tons: parseFloat(tons),
     portfolioId,
-    customerEmail,
-    currency: currency.toUpperCase(),
-    amountCents,
-    dryRun
+    dryRun,
+    note: `Puffin App order - Customer: ${customerEmail}`
   }, null, 2));
 
   if (!apiToken) {
@@ -48,14 +42,9 @@ export async function createWrenOffsetOrder({
       `${WREN_API_BASE_URL}/offset-orders`,
       {
         tons: parseFloat(tons),
-        portfolio: portfolioId,
-        currency: currency.toUpperCase(),
-        amount_charged: amountCents,
-        dry_run: dryRun,
-        source: {
-          name: 'Puffin App',
-          email: customerEmail
-        }
+        portfolioId: portfolioId,
+        dryRun: dryRun,
+        note: `Puffin App order - Customer: ${customerEmail}`
       },
       {
         headers: {