Phase 1 - Infrastructure Goal: prepare the dedicated ESP Platform VM and the native infrastructure required for the MVP. Scope: - Proxmox VM 675 "esp-platform". - Debian 12 Bookworm. - DHCP network with future MikroTik reservation. - User "codex" with sudo. - SSH, QEMU guest agent, UFW, fail2ban. - PostgreSQL native. - Nginx native on port 88. - Java, Maven, Python, PlatformIO, esptool. - Firmware storage in filesystem. - Project documentation and Git repository inside the VM. No backend application code is implemented in this preparation step.