[sentry]

This change modifies the refundOrder tool in apps/storefront/lib/ai/tools.ts to gracefully handle cases where an order has no corresponding payment record. Previously, db.selectPayment(orderId) would throw an error for such orders (e.g., legacy orders predating the payments launch), leading to an unhandled exception being captured by Sentry.

Now, the call to db.selectPayment(orderId) is wrapped in a try/catch block. If selectPayment throws, the refundOrder tool will return a structured result { refunded: false, reason: error.message }. This allows the AI to receive a clear tool result and respond gracefully to the user, preventing unhandled exceptions.

Fixes DEBUGGING-AGENTS-STOREFRONT-2

_{@sentry <feedback>: Autofix iterates on these changes
@sentry stop iterating: Autofix stops iterating on this run}