All Shellies log in with their own Dynamic Security account; the ESP32
open3e-int is decommissioned (owner, REN-1109). Drops both users from the
passwd/ACL, their env and Secret refs, the shellies bootstrap Job, the
open3e-int ExternalSecret, rotator and policy file.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>