Resource regeneration

Stamina nominal rate=base*(1+(1-current/max)*timeMultiplier), then blocking*.8 or forbidden-state*0, status multiplier, StaminaRegenRate, elapsed; add only after delay and cap at maximum. Eitr uses timeMultiplier1, blocking*.8, attack/dodge*0, (status multiplier+equipment regen modifier), elapsed; no EitrRate regeneration multiplier. Player UseEitr applies EitrRate to spending.