First field session with real crits (#80) found a weapon subsystem with a
NULL damageZone: Mech__DamageZone::CriticalHit -> ApplyDamageAndMeasure ->
MechWeapon::TakeDamage +0xf (the engine base derefs the zone unguarded --
every 1995 subsystem shipped with one). Stack symbolized from the field log;
the path was unreachable before tonight because ApplyDamageAndMeasure was a
stub until #80.
Guards at both choke points; a one-shot [crit] log NAMES the zoneless
subsystem when hit so the root cause (build that subsystem's zone) can be
fixed from the next field log. Owens crit bench: no crash, guard inert on
zoned subsystems.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
