Generate Endpoint Installer

Single = one host, pre-baked key (1-10 endpoints). Fleet = one enrollment installer per OS for many hosts via RMM / GPO / Ansible / MDM (each host self-enrolls). Both report through the public gateway agents.sentryglobal.net and land in tenant-<slug>.

The client's tenant. Agents are placed in tenant-<slug> (isolation + labelling).