This skill should be used when the user asks to "deploy to Upsun", "create Upsun environment", "manage Upsun project", "backup Upsun", "check Upsun status", "sync environment", "merge branch", "scale resources", "configure domain", "manage database", "check logs", "create tunnel", or mentions Upsun CLI commands, environment management, deployment workflows, backup/restore operations, resource scaling, or Upsun project administration.