The lock condition was "(effectively off) && (not own-disabled)", so a child that was ALREADY
individually disabled stayed clickable after the group was disabled — and clicking it merely flipped
it into the locked state. Lock now keys purely on whether a parent group is off (ancestorOff), so
once a group is disabled ALL its children are consistently 🚫 + non-toggleable until the group is
re-enabled.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
