fix(armor): match Entropia Nexus slot naming exactly

- TORSO (was CHEST) - Harness/Chest piece
- LEGS (was THIGHS) - Thigh Guards
- Updated Frontier set with correct slots
- Display names match Nexus: Head, Torso, Arms, Hands, Legs, Shins, Feet

Now matches Nexus JSON export structure exactly

core/armor_system.py

@@ -20,20 +20,20 @@ from enum import Enum, auto
 class ArmorSlot(Enum):
     """Armor slot types in Entropia Universe.
 
-    Standard 7-piece armor structure:
+    Standard 7-piece armor structure (matches Entropia Nexus):
     - Head (Helmet)
-    - Chest (Harness)
-    - Arms (Arm Guards - both arms)
-    - Hands (Gloves - both hands)
-    - Thighs (Thigh Guards)
+    - Torso (Harness/Chest)
+    - Arms (Arm Guards)
+    - Hands (Gloves)
+    - Legs (Thigh Guards)
     - Shins (Shin Guards)
     - Feet (Foot Guards)
     """
     HEAD = "head"
-    CHEST = "chest"  # Harness
-    ARMS = "arms"  # Arm Guards (both arms)
-    HANDS = "hands"  # Gloves (both hands)
-    THIGHS = "thighs"  # Thigh Guards
+    TORSO = "torso"  # Harness/Chest
+    ARMS = "arms"  # Arm Guards
+    HANDS = "hands"  # Gloves
+    LEGS = "legs"  # Thigh Guards
     SHINS = "shins"  # Shin Guards
     FEET = "feet"  # Foot Guards
 
@@ -41,10 +41,10 @@ class ArmorSlot(Enum):
 # Full set of 7 slots
 ALL_ARMOR_SLOTS = [
     ArmorSlot.HEAD,
-    ArmorSlot.CHEST,
+    ArmorSlot.TORSO,
     ArmorSlot.ARMS,
     ArmorSlot.HANDS,
-    ArmorSlot.THIGHS,
+    ArmorSlot.LEGS,
     ArmorSlot.SHINS,
     ArmorSlot.FEET,
 ]
@@ -299,15 +299,15 @@ class ArmorPiece:
         return plate
 
     def get_slot_display_name(self) -> str:
-        """Get human-readable slot name."""
+        """Get human-readable slot name (matches Entropia Nexus)."""
         slot_names = {
-            ArmorSlot.HEAD: "Helmet",
-            ArmorSlot.CHEST: "Harness",
-            ArmorSlot.ARMS: "Arm Guards",
-            ArmorSlot.HANDS: "Gloves",
-            ArmorSlot.THIGHS: "Thigh Guards",
-            ArmorSlot.SHINS: "Shin Guards",
-            ArmorSlot.FEET: "Foot Guards",
+            ArmorSlot.HEAD: "Head",
+            ArmorSlot.TORSO: "Torso",
+            ArmorSlot.ARMS: "Arms",
+            ArmorSlot.HANDS: "Hands",
+            ArmorSlot.LEGS: "Legs",
+            ArmorSlot.SHINS: "Shins",
+            ArmorSlot.FEET: "Feet",
         }
         return slot_names.get(self.slot, self.slot.value)
 
@@ -1237,17 +1237,17 @@ def create_frontier_set() -> ArmorSet:
             protection=ProtectionProfile(impact=Decimal("4"), cut=Decimal("3"), stab=Decimal("3")),
             weight=Decimal("0.5"),
         ),
-        ArmorSlot.CHEST: ArmorPiece(
+        ArmorSlot.TORSO: ArmorPiece(
             name="Frontier Harness, Adjusted (M)",
             item_id="frontier_harness_adj_m",
-            slot=ArmorSlot.CHEST,
+            slot=ArmorSlot.TORSO,
             set_name="Frontier",
             decay_per_hp=frontier_economy,
             protection=ProtectionProfile(impact=Decimal("8"), cut=Decimal("6"), stab=Decimal("6")),
             weight=Decimal("1.0"),
         ),
         ArmorSlot.ARMS: ArmorPiece(
-            name="Frontier Arm Guards, Adjusted (M)",  # Both arms
+            name="Frontier Arm Guards, Adjusted (M)",
             item_id="frontier_arm_adj_m",
             slot=ArmorSlot.ARMS,
             set_name="Frontier",
@@ -1256,7 +1256,7 @@ def create_frontier_set() -> ArmorSet:
             weight=Decimal("0.8"),
         ),
         ArmorSlot.HANDS: ArmorPiece(
-            name="Frontier Gloves, Adjusted (M)",  # Both hands
+            name="Frontier Gloves, Adjusted (M)",
             item_id="frontier_gloves_adj_m",
             slot=ArmorSlot.HANDS,
             set_name="Frontier",
@@ -1264,10 +1264,10 @@ def create_frontier_set() -> ArmorSet:
             protection=ProtectionProfile(impact=Decimal("3"), cut=Decimal("2"), stab=Decimal("2")),
             weight=Decimal("0.6"),
         ),
-        ArmorSlot.THIGHS: ArmorPiece(
+        ArmorSlot.LEGS: ArmorPiece(
             name="Frontier Thigh Guards, Adjusted (M)",
             item_id="frontier_thigh_adj_m",
-            slot=ArmorSlot.THIGHS,
+            slot=ArmorSlot.LEGS,
             set_name="Frontier",
             decay_per_hp=frontier_economy,
             protection=ProtectionProfile(impact=Decimal("4"), cut=Decimal("3"), stab=Decimal("3")),