fix: protection stacking + remove misleading def from combat card

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.

modules/mournblade-cyd2-actor.js

@@ -221,16 +221,18 @@ export class MournbladeCYD2Actor extends Actor {
   }
   /* -------------------------------------------- */
   getProtection() {
-    let equipProtection = 0
+    let sum = 0
+    let hasRealArmor = false
     for (let armor of this.items) {
       if (armor.type == "protection" && armor.system.equipped) {
-        equipProtection += Number(armor.system.protection)
+        const val = Number(armor.system.protection)
+        sum += val
+        if (val >= 4) hasRealArmor = true
       }
     }
-    if (equipProtection < 4) {
+    if (sum === 0) return 4          // Aucune protection → base 4
-      return 4 + equipProtection // Cas des boucliers + sans armure
+    if (hasRealArmor) return sum     // Au moins une vraie armure → somme directe
-    }
+    return 4 + sum                   // Que des boucliers/protections légères → base + bonus
-    return equipProtection // Uniquement la protection des armures + boucliers
   }
   getProtectionTotal() {
     return this.getProtection()

templates/actor-sheet.hbs

@@ -111,10 +111,6 @@
             <label>{{localize "MNBL.initShort"}}</label>
             <span>{{combat.initTotal}}</span>
           </div>
-          <div class="stat-field">
-            <label>{{localize "MNBL.defShort"}}</label>
-            <span>{{combat.defenseTotal}}</span>
-          </div>
           <div class="stat-field">
             <label>{{localize "MNBL.protShort"}}</label>
             <span>{{protectionTotal}}</span>