Fix armor stat in character stats panel via UNIT_FIELD_RESISTANCES

The character stats panel was showing Armor: 0 because summing armor
from item query responses is fragile (depends on correct BuyCount/damage
block parsing). Instead, read the server-authoritative total armor
directly from UNIT_FIELD_RESISTANCES (physical resistance, index 0)
in the player entity update fields.

Added UNIT_FIELD_RESISTANCES to the UF enum and all four expansion
JSON files with correct wire indices:
  WotLK 3.3.5a: 99   (NPC_FLAGS=82 + emotestate + stat×5 + posstat×5 + negstat×5)
  TBC 2.4.3:   185   (NPC_FLAGS=168 + same relative layout)
  Classic 1.12: 154  (NPC_FLAGS=147 + emotestate + stat×5, no posstat/negstat)
  Turtle WoW:  154   (same as Classic)

Stats panel uses server armor when > 0, falls back to summed item-query
armor otherwise. Armor rating resets to 0 on world entry and is updated
from both CREATE_OBJECT and VALUES update blocks.

Data/expansions/classic/update_fields.json

@@ -15,6 +15,7 @@
   "UNIT_FIELD_AURAS": 50,
   "UNIT_NPC_FLAGS": 147,
   "UNIT_DYNAMIC_FLAGS": 143,
+  "UNIT_FIELD_RESISTANCES": 154,
   "UNIT_END": 188,
   "PLAYER_FLAGS": 190,
   "PLAYER_BYTES": 191,

Data/expansions/tbc/update_fields.json

@@ -15,6 +15,7 @@
   "UNIT_FIELD_MOUNTDISPLAYID": 154,
   "UNIT_NPC_FLAGS": 168,
   "UNIT_DYNAMIC_FLAGS": 164,
+  "UNIT_FIELD_RESISTANCES": 185,
   "UNIT_END": 234,
   "PLAYER_FLAGS": 236,
   "PLAYER_BYTES": 237,

Data/expansions/turtle/update_fields.json

@@ -15,6 +15,7 @@
   "UNIT_FIELD_AURAS": 50,
   "UNIT_NPC_FLAGS": 147,
   "UNIT_DYNAMIC_FLAGS": 143,
+  "UNIT_FIELD_RESISTANCES": 154,
   "UNIT_END": 188,
   "PLAYER_FLAGS": 190,
   "PLAYER_BYTES": 191,

Data/expansions/wotlk/update_fields.json

@@ -15,6 +15,7 @@
   "UNIT_FIELD_MOUNTDISPLAYID": 69,
   "UNIT_NPC_FLAGS": 82,
   "UNIT_DYNAMIC_FLAGS": 147,
+  "UNIT_FIELD_RESISTANCES": 99,
   "UNIT_END": 148,
   "PLAYER_FLAGS": 150,
   "PLAYER_BYTES": 151,

include/game/game_handler.hpp

@@ -273,6 +273,9 @@ public:
     // Money (copper)
     uint64_t getMoneyCopper() const { return playerMoneyCopper_; }
 
+    // Server-authoritative armor (UNIT_FIELD_RESISTANCES[0])
+    int32_t getArmorRating() const { return playerArmorRating_; }
+
     // Inventory
     Inventory& getInventory() { return inventory; }
     const Inventory& getInventory() const { return inventory; }
@@ -1435,6 +1438,7 @@ private:
     float pendingLootMoneyNotifyTimer_ = 0.0f;
     std::unordered_map<uint64_t, float> recentLootMoneyAnnounceCooldowns_;
     uint64_t playerMoneyCopper_ = 0;
+    int32_t playerArmorRating_ = 0;
     // Some servers/custom clients shift update field indices. We can auto-detect coinage by correlating
     // money-notify deltas with update-field diffs and then overriding UF::PLAYER_FIELD_COINAGE at runtime.
     uint32_t pendingMoneyDelta_ = 0;

include/game/update_field_table.hpp

@@ -32,6 +32,7 @@ enum class UF : uint16_t {
     UNIT_FIELD_AURAS,           // Start of aura spell ID array (48 consecutive uint32 slots, classic/vanilla only)
     UNIT_NPC_FLAGS,
     UNIT_DYNAMIC_FLAGS,
+    UNIT_FIELD_RESISTANCES,   // Physical armor (index 0 of the resistance array)
     UNIT_END,
 
     // Player fields

include/ui/inventory_screen.hpp

@@ -131,7 +131,7 @@ private:
                          int bagIndex, float defaultX, float defaultY, uint64_t moneyCopper);
     void renderEquipmentPanel(game::Inventory& inventory);
     void renderBackpackPanel(game::Inventory& inventory, bool collapseEmptySections = false);
-    void renderStatsPanel(game::Inventory& inventory, uint32_t playerLevel);
+    void renderStatsPanel(game::Inventory& inventory, uint32_t playerLevel, int32_t serverArmor = 0);
 
     // Slot rendering with interaction support
     enum class SlotKind { BACKPACK, EQUIPMENT };

src/game/game_handler.cpp

@@ -2772,6 +2772,7 @@ void GameHandler::selectCharacter(uint64_t characterGuid) {
     lastPlayerFields_.clear();
     onlineEquipDirty_ = false;
     playerMoneyCopper_ = 0;
+    playerArmorRating_ = 0;
     knownSpells.clear();
     spellCooldowns.clear();
     actionBar = {};
@@ -4427,6 +4428,7 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
                     const uint16_t ufPlayerNextXp = fieldIndex(UF::PLAYER_NEXT_LEVEL_XP);
                     const uint16_t ufPlayerLevel = fieldIndex(UF::UNIT_FIELD_LEVEL);
                     const uint16_t ufCoinage = fieldIndex(UF::PLAYER_FIELD_COINAGE);
+                    const uint16_t ufArmor = fieldIndex(UF::UNIT_FIELD_RESISTANCES);
                     for (const auto& [key, val] : block.fields) {
                         if (key == ufPlayerXp) { playerXp_ = val; }
                         else if (key == ufPlayerNextXp) { playerNextLevelXp_ = val; }
@@ -4440,6 +4442,10 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
                             playerMoneyCopper_ = val;
                             LOG_INFO("Money set from update fields: ", val, " copper");
                         }
+                        else if (ufArmor != 0xFFFF && key == ufArmor) {
+                            playerArmorRating_ = static_cast<int32_t>(val);
+                            LOG_INFO("Armor rating from update fields: ", playerArmorRating_);
+                        }
                         // Do not synthesize quest-log entries from raw update-field slots.
                         // Slot layouts differ on some classic-family realms and can produce
                         // phantom "already accepted" quests that block quest acceptance.
@@ -4684,6 +4690,7 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
                         const uint16_t ufPlayerLevel = fieldIndex(UF::UNIT_FIELD_LEVEL);
                         const uint16_t ufCoinage = fieldIndex(UF::PLAYER_FIELD_COINAGE);
                         const uint16_t ufPlayerFlags = fieldIndex(UF::PLAYER_FLAGS);
+                        const uint16_t ufArmor = fieldIndex(UF::UNIT_FIELD_RESISTANCES);
                         for (const auto& [key, val] : block.fields) {
                             if (key == ufPlayerXp) {
                                 playerXp_ = val;
@@ -4711,6 +4718,9 @@ void GameHandler::handleUpdateObject(network::Packet& packet) {
                                 playerMoneyCopper_ = val;
                                 LOG_INFO("Money updated via VALUES: ", val, " copper");
                             }
+                            else if (ufArmor != 0xFFFF && key == ufArmor) {
+                                playerArmorRating_ = static_cast<int32_t>(val);
+                            }
                             else if (key == ufPlayerFlags) {
                                 constexpr uint32_t PLAYER_FLAGS_GHOST = 0x00000010;
                                 bool wasGhost = releasedSpirit_;

src/game/update_field_table.cpp

@@ -35,6 +35,7 @@ static const UFNameEntry kUFNames[] = {
     {"UNIT_FIELD_AURAS", UF::UNIT_FIELD_AURAS},
     {"UNIT_NPC_FLAGS", UF::UNIT_NPC_FLAGS},
     {"UNIT_DYNAMIC_FLAGS", UF::UNIT_DYNAMIC_FLAGS},
+    {"UNIT_FIELD_RESISTANCES", UF::UNIT_FIELD_RESISTANCES},
     {"UNIT_END", UF::UNIT_END},
     {"PLAYER_FLAGS", UF::PLAYER_FLAGS},
     {"PLAYER_BYTES", UF::PLAYER_BYTES},
@@ -76,6 +77,7 @@ void UpdateFieldTable::loadWotlkDefaults() {
         {UF::UNIT_FIELD_MOUNTDISPLAYID, 69},
         {UF::UNIT_NPC_FLAGS, 82},
         {UF::UNIT_DYNAMIC_FLAGS, 147},
+        {UF::UNIT_FIELD_RESISTANCES, 99},
         {UF::UNIT_END, 148},
         {UF::PLAYER_FLAGS, 150},
         {UF::PLAYER_BYTES, 151},

src/ui/inventory_screen.cpp

@@ -1066,7 +1066,7 @@ void InventoryScreen::renderCharacterScreen(game::GameHandler& gameHandler) {
 
         if (ImGui::BeginTabItem("Stats")) {
             ImGui::Spacing();
-            renderStatsPanel(inventory, gameHandler.getPlayerLevel());
+            renderStatsPanel(inventory, gameHandler.getPlayerLevel(), gameHandler.getArmorRating());
             ImGui::EndTabItem();
         }
 
@@ -1269,15 +1269,13 @@ void InventoryScreen::renderEquipmentPanel(game::Inventory& inventory) {
 // Stats Panel
 // ============================================================
 
-void InventoryScreen::renderStatsPanel(game::Inventory& inventory, uint32_t playerLevel) {
+void InventoryScreen::renderStatsPanel(game::Inventory& inventory, uint32_t playerLevel, int32_t serverArmor) {
     // Sum equipment stats
-    int32_t totalArmor = 0;
     int32_t totalStr = 0, totalAgi = 0, totalSta = 0, totalInt = 0, totalSpi = 0;
 
     for (int s = 0; s < game::Inventory::NUM_EQUIP_SLOTS; s++) {
         const auto& slot = inventory.getEquipSlot(static_cast<game::EquipSlot>(s));
         if (slot.empty()) continue;
-        totalArmor += slot.item.armor;
         totalStr += slot.item.strength;
         totalAgi += slot.item.agility;
         totalSta += slot.item.stamina;
@@ -1285,6 +1283,15 @@ void InventoryScreen::renderStatsPanel(game::Inventory& inventory, uint32_t play
         totalSpi += slot.item.spirit;
     }
 
+    // Use server-authoritative armor from UNIT_FIELD_RESISTANCES when available.
+    // Falls back to summing item query armors if server armor wasn't received yet.
+    int32_t itemQueryArmor = 0;
+    for (int s = 0; s < game::Inventory::NUM_EQUIP_SLOTS; s++) {
+        const auto& slot = inventory.getEquipSlot(static_cast<game::EquipSlot>(s));
+        if (!slot.empty()) itemQueryArmor += slot.item.armor;
+    }
+    int32_t totalArmor = (serverArmor > 0) ? serverArmor : itemQueryArmor;
+
     // Base stats: 20 + level
     int32_t baseStat = 20 + static_cast<int32_t>(playerLevel);