Characters die from damage when their health is reduced below their negative Constitution score. However, some spells stabilize you when you'd die. Can these spells stabilize you even from damage that reduces your health below your negative Constitution?
For example, Shadow Endurance says:
If you are reduced below 0 hit points or rendered unconscious, shadow endurance immediately discharges, shunting your injured body into a hidden alcove on the Shadow Plane.
You immediately stabilize, but cannot awaken or take any further actions until the second duration expires.
Nine Lives does similar:
Rejuvenate: The target uses this ability when it is reduced to 0 or fewer hit points. The target is instantly healed 3d6 points of damage. If enough hit points are regained to bring the target to positive hit points, it does not fall unconscious. If it is not enough to leave the target with positive hit points, the target automatically stabilizes. Both of these effects work even if the damage was originally enough to kill the target.
I feel it's made fairly clear in the case of nine-lives that you wouldn't die, but it's less clear for me whether it'd work the same way in the case of Shadow Endurance. How do spells that stabilize you from dying interact with outright death? Can they successfully stabilize you, or do you die anyway?