user.email account.plan_name - cleanup context and service construction - config for stripe callback - initial plan

.env_example

@@ -3,6 +3,7 @@ SUPABASE_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxx.xxxxxxxxx.xxxxxx-xxxxx
 
 STRIPE_SECRET_KEY=sk_test_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 STRIPE_ENDPOINT_SECRET=whsec_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+STRIPE_CALLBACK_URL=http://localhost:3000
 
 # This was inserted by `prisma init`:
 # Environment variables declared in this file are automatically made available to Prisma.