Variable VITAL_SIGNS`Const`

VITAL_SIGNS: readonly [
    "coreTemperature",
    "heartRate",
    "respiratoryRate",
    "bloodPressureSystolic",
    "bloodPressureDiastolic",
    "spo2",
    "bloodVolume",
] = ...

The engine's vital-sign vocabulary — the canonical key list, used by the band profile (Species.VitalProfile), the per-sign storage, and anatomy's governsVital coupling. Re-exported as the single source of truth so BodyPlan can validate against it value-only.