Add Reputation tab to character screen with colored tier progress bars

- Add Reputation tab in character screen tab bar (Equipment/Stats/Reputation/Skills)
- Implement renderReputationPanel() showing all tracked factions sorted alphabetically
- Progress bars colored per WoW reputation tier: Hated/Hostile/Unfriendly/Neutral/Friendly/Honored/Revered/Exalted
- Add public getFactionNamePublic() backed by DBC name cache with lazy load

include/game/game_handler.hpp

@@ -902,6 +902,7 @@ public:
     };
     const std::vector<FactionStandingInit>& getInitialFactions() const { return initialFactions_; }
     const std::unordered_map<uint32_t, int32_t>& getFactionStandings() const { return factionStandings_; }
+    const std::string& getFactionNamePublic(uint32_t factionId) const;
     uint32_t getLastContactListMask() const { return lastContactListMask_; }
     uint32_t getLastContactListCount() const { return lastContactListCount_; }
     bool isServerMovementAllowed() const { return serverMovementAllowed_; }

include/ui/inventory_screen.hpp

@@ -148,6 +148,7 @@ private:
     void renderEquipmentPanel(game::Inventory& inventory);
     void renderBackpackPanel(game::Inventory& inventory, bool collapseEmptySections = false);
     void renderStatsPanel(game::Inventory& inventory, uint32_t playerLevel, int32_t serverArmor = 0);
+    void renderReputationPanel(game::GameHandler& gameHandler);
 
     void renderItemSlot(game::Inventory& inventory, const game::ItemSlot& slot,
                         float size, const char* label,