GM Notes
• Reaction rating = system's verb contention vs Hack/Operate.
• Each subsystem requires a successful contention to bypass.
• System adjectives & ICE justify contest dice.
• Consequence profile includes escalation arc & meatspace response.
• Digital environment gives the space a look, a quirk, and a detail.
• Probable ICE mode reflects that not every system is defended — tiers 1–2 never have ICE; tiers 3–4 rarely do.