added reason for already attributed case

Author: waleedlatif1

apps/sim/app/api/attribution/route.ts

@@ -207,6 +207,7 @@ export async function POST() {
     return NextResponse.json({
       attributed,
       bonusAmount: attributed ? bonusAmount : undefined,
+      reason: attributed ? undefined : 'already_attributed',
     })
   } catch (error) {
     logger.error('Attribution error', { error })

apps/sim/hooks/use-referral-attribution.ts

@@ -12,6 +12,7 @@ const TERMINAL_REASONS = new Set([
   'invalid_cookie',
   'no_utm_cookie',
   'no_matching_campaign',
+  'already_attributed',
 ])
 
 /**