getProtection(): replace threshold sum<4 with hasRealArmor check.
Old logic broke when two sub-4 items (e.g. shield 2 + light armor 3)
summed >=4 and lost the base+4 bonus — causing protection to decrease
when equipping them together.
actor-sheet.hbs: remove defenseTotal from top-right combat card.
This value excluded Mêlée skill, making it always wrong vs
the per-weapon defense shown in the combat tab.
uberwald
24aac79101