A monitor that can watch and stop — nothing else. It observes usage and holds exactly two powers: adjust a compartment's resource contract, and stop it. Each memory bar shows usage against that compartment's cap (the tick) — the ceiling written into its bond, so a browser tab that eats 25 GB is throttled at its own 32 GB limit and never starves the machine. CPU is a weight, not a hard percent — share under contention. "Suspend all to disk" is the calm exit (sealed snapshot, resume later); "Emergency stop" is the presence-gated panic that signals terminate into every compartment at once. Concept render in the PolymerOS design language.