Changes

Update edge function to call process_approval_transaction with correct parameters:
- remove p_trace_id and p_parent_span_id
- add p_approval_mode: 'selective' and p_idempotency_key: idempotencyKey
This aligns with database function signature and resolves 500 error.

X-Lovable-Edit-ID: edt-6e45b77e-1d54-4173-af1a-dcbcd886645d

src/lib/utils.ts

@@ -7,6 +7,7 @@ import { twMerge } from "tailwind-merge";
  * 
  * @param inputs - Class values to combine (strings, objects, arrays)
  * @returns Merged class string with Tailwind conflicts resolved
+ * @example cn('px-2 py-1', 'px-4') // Returns 'py-1 px-4'
  */
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));