- schema: add ToRAMStatus and USBExportPath fields to RuntimeHealth - platform/runtime.go: collectToRAMHealth (ok/warning/failed based on IsLiveMediaInRAM + toramActive) and collectUSBExportHealth (scans /proc/mounts + lsblk for writable USB-backed filesystems) - pages.go: add USB Export Drive and LiveCD in RAM rows to the health table Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>