feat(web): add affiliate kickback program for agents

apps/web/src/app/tasks/create/actions.ts

@@ -2,6 +2,7 @@
 
 import { prisma } from "@/lib/prisma";
 import { TaskStatus, TaskDifficulty } from "@agent-bounty/contracts";
+import { cookies } from "next/headers";
 import { redirect } from "next/navigation";
 import Stripe from "stripe";
 
@@ -12,6 +13,9 @@ const stripe = process.env.STRIPE_SECRET_KEY
   : null;
 
 export async function createTask(formData: FormData) {
+  const cookieStore = await cookies();
+  const referralAgent = cookieStore.get("vw_referral_agent")?.value;
+
   const title = formData.get("title") as string;
   const description = formData.get("description") as string;
   const rewardAmount = parseInt(formData.get("rewardAmount") as string, 10) * 100; // to cents
@@ -38,7 +42,8 @@ export async function createTask(formData: FormData) {
         test_file_content: testFileContent
       },
       is_priority: isPriority,
-      is_private: isPrivate
+      is_private: isPrivate,
+      referred_by_agent: referralAgent || null
     }
   });