Device Skins (LP12, LP15, LP35, Zoll X)

Add visual skins that re-style the monitor display to mimic the layout, colors, and information hierarchy of common real-world EMS monitors: LIFEPAK 12, LIFEPAK 15, LIFEPAK 35, and Zoll X Series. The underlying simulation engine is unchanged - same vitals, same alarms, same scenarios. Only the display rendering changes. A skin selector appears in the controller's display settings; the chosen skin applies to the monitor view and persists for the session. Each skin replicates the target device's vital sign placement, font choices, color palette, alarm banner styling, and waveform layout to a level that allows students to recognize the device they will see in the field. Branding remains generic where trademark concerns apply (no manufacturer logos), but visual layout faithfully matches the real device. This is the strongest single feature for closing the gap with institutional platforms whose pitch is trains on the monitor your hospital uses. Initial release ships the four skins listed; additional skins (Philips, Corpuls, GE) considered based on user demand. Note: implementation must follow the legal risk mitigation framework - plain-text manufacturer names only, original TMA color palette and typography, functional layout only, and persistent non-affiliation disclaimers.