Two device-critical pieces previously applied only by the dev restore
script: masked sleep targets (idle-suspend resets the WCN combo firmware
and kills wifi ~40min - a device defect, not personalization) and imsd
enabled at boot, gated on /etc/imsd.env existing so unconfigured systems
don't boot a failing unit. A stranger now needs exactly: flash, wifi via
UI, write imsd.env, restart imsd.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
