Route deploy-staging, deploy-production, and smoke jobs through the org self-hosted runner [self-hosted, peptide-vps] on KVM8 VPS. This fixes the Hostinger SSH throttle: Azure eastus2/ncus ranges are blocked at :65002; the VPS has a stable, allowlisted IP. Callers' CI/validate jobs remain on ubuntu-latest (GitHub-hosted). Bumps to v1.7.1. Agent-Session: deploy-self-hosted-20260617