Orphan EBS volumes: ₹80K/mo silent drain

Every AWS audit I run, I find the same thing: 15-40% of EBS volumes orphaned. Detached. Running. Billing. The team's reaction is always identical: "Oh, we'll run a cleanup script this weekend." They do. Two months later, the orphans are back. Because cleanup is a downstream fix. It doesn't stop the upstream leak. The actual causes: → Auto-scaling groups that terminate instances but can't delete attached volumes → Terraform runs that recreate resources but leave old volumes dangling → Dev scripts