chore(game-ui): extract GameScreen domains

- Extracted `GameScreen` functionality into dedicated UI domains
- Added new panels:
  - `action_bar_panel`
  - `combat_ui`
  - `social_panel`
  - `window_manager`
- Updated `game_screen` + CMakeLists.txt integration
- Added new headers and sources under ui and ui

CMakeLists.txt

@@ -560,6 +560,10 @@ set(WOWEE_SOURCES
     src/ui/toast_manager.cpp
     src/ui/dialog_manager.cpp
     src/ui/settings_panel.cpp
+    src/ui/combat_ui.cpp
+    src/ui/social_panel.cpp
+    src/ui/action_bar_panel.cpp
+    src/ui/window_manager.cpp
     src/ui/inventory_screen.cpp
     src/ui/quest_log_screen.cpp
     src/ui/spellbook_screen.cpp

include/ui/action_bar_panel.hpp

@@ -0,0 +1,78 @@
+// ============================================================
+// ActionBarPanel — extracted from GameScreen
+// Owns all action bar rendering: main bar, stance bar, bag bar,
+// XP bar, reputation bar, macro resolution.
+// ============================================================
+#pragma once
+#include <cstdint>
+#include <unordered_map>
+#include <functional>
+#include <vulkan/vulkan.h>
+
+namespace wowee {
+namespace game { class GameHandler; }
+namespace pipeline { class AssetManager; }
+namespace ui {
+
+class ChatPanel;
+class SettingsPanel;
+class InventoryScreen;
+class SpellbookScreen;
+class QuestLogScreen;
+
+class ActionBarPanel {
+public:
+    // Callback type for resolving spell icons (spellId, assetMgr) → VkDescriptorSet
+    using SpellIconFn = std::function<VkDescriptorSet(uint32_t, pipeline::AssetManager*)>;
+
+    // ---- Action bar render methods ----
+    void renderActionBar(game::GameHandler& gameHandler,
+                         SettingsPanel& settingsPanel,
+                         ChatPanel& chatPanel,
+                         InventoryScreen& inventoryScreen,
+                         SpellbookScreen& spellbookScreen,
+                         QuestLogScreen& questLogScreen,
+                         SpellIconFn getSpellIcon);
+    void renderStanceBar(game::GameHandler& gameHandler,
+                         SettingsPanel& settingsPanel,
+                         SpellbookScreen& spellbookScreen,
+                         SpellIconFn getSpellIcon);
+    void renderBagBar(game::GameHandler& gameHandler,
+                      SettingsPanel& settingsPanel,
+                      InventoryScreen& inventoryScreen);
+    void renderXpBar(game::GameHandler& gameHandler,
+                     SettingsPanel& settingsPanel);
+    void renderRepBar(game::GameHandler& gameHandler,
+                      SettingsPanel& settingsPanel);
+
+    // ---- State owned by this panel ----
+
+    // Action bar error-flash: spellId → wall-clock time (seconds) when the flash ends
+    std::unordered_map<uint32_t, float> actionFlashEndTimes_;
+    static constexpr float kActionFlashDuration = 0.5f;
+
+    // Action bar drag state (-1 = not dragging)
+    int actionBarDragSlot_ = -1;
+    VkDescriptorSet actionBarDragIcon_ = VK_NULL_HANDLE;
+
+    // Bag bar state
+    VkDescriptorSet backpackIconTexture_ = VK_NULL_HANDLE;
+    VkDescriptorSet emptyBagSlotTexture_ = VK_NULL_HANDLE;
+    int bagBarPickedSlot_ = -1;
+    int bagBarDragSource_ = -1;
+
+    // Macro editor popup state
+    uint32_t macroEditorId_   = 0;
+    bool     macroEditorOpen_ = false;
+    char     macroEditorBuf_[256] = {};
+
+    // Macro cooldown cache: maps macro ID → resolved primary spell ID
+    std::unordered_map<uint32_t, uint32_t> macroPrimarySpellCache_;
+    size_t macroCacheSpellCount_ = 0;
+
+private:
+    uint32_t resolveMacroPrimarySpellId(uint32_t macroId, game::GameHandler& gameHandler);
+};
+
+} // namespace ui
+} // namespace wowee

include/ui/combat_ui.hpp

@@ -0,0 +1,76 @@
+#pragma once
+
+#include <imgui.h>
+#include <vulkan/vulkan.h>
+#include <string>
+#include <vector>
+#include <cstdint>
+#include <functional>
+
+namespace wowee {
+namespace game { class GameHandler; }
+namespace pipeline { class AssetManager; }
+namespace ui {
+
+class SettingsPanel;
+class SpellbookScreen;
+
+/**
+ * Combat UI overlay manager (extracted from GameScreen)
+ *
+ * Owns all combat-related rendering:
+ *   cast bar, cooldown tracker, raid warning overlay, floating combat text,
+ *   DPS/HPS meter, buff bar, battleground score HUD, combat log,
+ *   threat window, BG scoreboard.
+ */
+class CombatUI {
+public:
+    CombatUI() = default;
+
+    // ---- Callback type for spell icon lookup (stays in GameScreen) ----
+    using SpellIconFn = std::function<VkDescriptorSet(uint32_t spellId, pipeline::AssetManager*)>;
+
+    // ---- Toggle booleans (written by slash commands / escape handler / settings) ----
+    bool showCombatLog_ = false;
+    bool showThreatWindow_ = false;
+    bool showBgScoreboard_ = false;
+
+    // ---- Raid Warning / Boss Emote big-text overlay ----
+    struct RaidWarnEntry {
+        std::string text;
+        float age = 0.0f;
+        bool isBossEmote = false;
+        static constexpr float LIFETIME = 5.0f;
+    };
+    std::vector<RaidWarnEntry> raidWarnEntries_;
+    bool raidWarnCallbackSet_ = false;
+    size_t raidWarnChatSeenCount_ = 0;
+
+    // ---- DPS meter state ----
+    float dpsCombatAge_ = 0.0f;
+    bool dpsWasInCombat_ = false;
+    float dpsEncounterDamage_ = 0.0f;
+    float dpsEncounterHeal_   = 0.0f;
+    size_t dpsLogSeenCount_   = 0;
+
+    // ---- Public render methods ----
+    void renderCastBar(game::GameHandler& gameHandler, SpellIconFn getSpellIcon);
+    void renderCooldownTracker(game::GameHandler& gameHandler,
+                               const SettingsPanel& settings,
+                               SpellIconFn getSpellIcon);
+    void renderRaidWarningOverlay(game::GameHandler& gameHandler);
+    void renderCombatText(game::GameHandler& gameHandler);
+    void renderDPSMeter(game::GameHandler& gameHandler,
+                        const SettingsPanel& settings);
+    void renderBuffBar(game::GameHandler& gameHandler,
+                       SpellbookScreen& spellbookScreen,
+                       SpellIconFn getSpellIcon);
+    void renderBattlegroundScore(game::GameHandler& gameHandler);
+    void renderCombatLog(game::GameHandler& gameHandler,
+                         SpellbookScreen& spellbookScreen);
+    void renderThreatWindow(game::GameHandler& gameHandler);
+    void renderBgScoreboard(game::GameHandler& gameHandler);
+};
+
+} // namespace ui
+} // namespace wowee

include/ui/game_screen.hpp

@@ -13,6 +13,10 @@
 #include "ui/toast_manager.hpp"
 #include "ui/dialog_manager.hpp"
 #include "ui/settings_panel.hpp"
+#include "ui/combat_ui.hpp"
+#include "ui/social_panel.hpp"
+#include "ui/action_bar_panel.hpp"
+#include "ui/window_manager.hpp"
 #include <vulkan/vulkan.h>
 #include <imgui.h>
 #include <string>
@@ -59,9 +63,17 @@ private:
     // Settings panel (extracted from GameScreen — owns all settings UI and config state)
     SettingsPanel settingsPanel_;
 
-    // Action bar error-flash: spellId → wall-clock time (seconds) when the flash ends.
+    // Combat UI (extracted from GameScreen — owns all combat overlay rendering)
-    // Populated by the SpellCastFailedCallback; queried during action bar button rendering.
+    CombatUI combatUI_;
-    std::unordered_map<uint32_t, float> actionFlashEndTimes_;
+
+    // Social panel (extracted from GameScreen — owns all social/group UI rendering)
+    SocialPanel socialPanel_;
+
+    // Action bar panel (extracted from GameScreen — owns action/stance/bag/xp/rep bars)
+    ActionBarPanel actionBarPanel_;
+
+    // Window manager (extracted from GameScreen — owns NPC windows, popups, overlays)
+    WindowManager windowManager_;
 
     // UI state
     bool showEntityWindow = false;
@@ -74,59 +86,21 @@ private:
     float damageFlashAlpha_ = 0.0f; // Screen edge flash intensity (fades to 0)
 
 
-    // Raid Warning / Boss Emote big-text overlay (center-screen, fades after 5s)
-    struct RaidWarnEntry {
-        std::string text;
-        float age = 0.0f;
-        bool isBossEmote = false;  // true = amber, false (raid warning) = red+yellow
-        static constexpr float LIFETIME = 5.0f;
-    };
-    std::vector<RaidWarnEntry> raidWarnEntries_;
-    bool raidWarnCallbackSet_ = false;
-    size_t raidWarnChatSeenCount_ = 0;  // index into chat history for unread scan
-
     // UIErrorsFrame: WoW-style center-bottom error messages (spell fails, out of range, etc.)
     struct UIErrorEntry { std::string text; float age = 0.0f; };
     std::vector<UIErrorEntry> uiErrors_;
     bool uiErrorCallbackSet_ = false;
     static constexpr float kUIErrorLifetime = 2.5f;
     bool castFailedCallbackSet_ = false;
-    static constexpr float kActionFlashDuration = 0.5f;  // seconds for error-red overlay to fade
-
-
-
-    // Death screen: elapsed time since the death dialog first appeared
-    float deathElapsed_ = 0.0f;
-    bool deathTimerRunning_ = false;
-    // WoW forces release after ~6 minutes; show countdown until then
-    static constexpr float kForcedReleaseSec = 360.0f;
 
     bool showPlayerInfo = false;
-    bool showSocialFrame_ = false;  // O key toggles social/friends list
-    bool showGuildRoster_ = false;
-    bool showRaidFrames_ = true;  // F key toggles raid/party frames
     bool showWorldMap_ = false;  // W key toggles world map
-    std::string selectedGuildMember_;
-    bool showGuildNoteEdit_ = false;
-    bool editingOfficerNote_ = false;
-    char guildNoteEditBuffer_[256] = {0};
-    int guildRosterTab_ = 0;  // 0=Roster, 1=Guild Info
-    char guildMotdEditBuffer_[256] = {0};
-    bool showMotdEdit_ = false;
-    char petitionNameBuffer_[64] = {0};
-    char addRankNameBuffer_[64] = {0};
-    bool showAddRankModal_ = false;
-    bool vendorBagsOpened_ = false;  // Track if bags were auto-opened for current vendor session
     ImVec2 questTrackerPos_ = ImVec2(-1.0f, -1.0f);  // <0 = use default
     ImVec2 questTrackerSize_ = ImVec2(220.0f, 200.0f); // saved size
     float questTrackerRightOffset_ = -1.0f;            // pixels from right edge; <0 = use default
     bool questTrackerPosInit_ = false;
-    bool showEscapeMenu = false;
 
-    // Macro editor popup state
+
-    uint32_t macroEditorId_   = 0;        // macro index being edited
-    bool     macroEditorOpen_ = false;    // deferred OpenPopup flag
-    char     macroEditorBuf_[256] = {};   // edit buffer
 
     /**
      * Render player info window
@@ -170,51 +144,13 @@ private:
      */
     void updateCharacterTextures(game::Inventory& inventory);
 
-    // ---- New UI renders ----
-    void renderActionBar(game::GameHandler& gameHandler);
-    void renderStanceBar(game::GameHandler& gameHandler);
-    void renderBagBar(game::GameHandler& gameHandler);
-    void renderXpBar(game::GameHandler& gameHandler);
-    void renderRepBar(game::GameHandler& gameHandler);
-    void renderCastBar(game::GameHandler& gameHandler);
-    void renderMirrorTimers(game::GameHandler& gameHandler);
-    void renderCooldownTracker(game::GameHandler& gameHandler);
-    void renderCombatText(game::GameHandler& gameHandler);
-    void renderRaidWarningOverlay(game::GameHandler& gameHandler);
-    void renderPartyFrames(game::GameHandler& gameHandler);
-    void renderBossFrames(game::GameHandler& gameHandler);
-    void renderUIErrors(game::GameHandler& gameHandler, float deltaTime);
 
-    void renderBuffBar(game::GameHandler& gameHandler);
+    void renderMirrorTimers(game::GameHandler& gameHandler);
-    void renderSocialFrame(game::GameHandler& gameHandler);
+    void renderUIErrors(game::GameHandler& gameHandler, float deltaTime);
-    void renderLootWindow(game::GameHandler& gameHandler);
-    void renderGossipWindow(game::GameHandler& gameHandler);
-    void renderQuestDetailsWindow(game::GameHandler& gameHandler);
-    void renderQuestRequestItemsWindow(game::GameHandler& gameHandler);
-    void renderQuestOfferRewardWindow(game::GameHandler& gameHandler);
-    void renderVendorWindow(game::GameHandler& gameHandler);
-    void renderTrainerWindow(game::GameHandler& gameHandler);
-    void renderBarberShopWindow(game::GameHandler& gameHandler);
-    void renderStableWindow(game::GameHandler& gameHandler);
-    void renderTaxiWindow(game::GameHandler& gameHandler);
-    void renderLogoutCountdown(game::GameHandler& gameHandler);
-    void renderDeathScreen(game::GameHandler& gameHandler);
-    void renderReclaimCorpseButton(game::GameHandler& gameHandler);
-    void renderEscapeMenu();
     void renderQuestMarkers(game::GameHandler& gameHandler);
     void renderMinimapMarkers(game::GameHandler& gameHandler);
     void renderQuestObjectiveTracker(game::GameHandler& gameHandler);
-    void renderGuildRoster(game::GameHandler& gameHandler);
-    void renderMailWindow(game::GameHandler& gameHandler);
-    void renderMailComposeWindow(game::GameHandler& gameHandler);
-    void renderBankWindow(game::GameHandler& gameHandler);
-    void renderGuildBankWindow(game::GameHandler& gameHandler);
-    void renderAuctionHouseWindow(game::GameHandler& gameHandler);
-    void renderDungeonFinderWindow(game::GameHandler& gameHandler);
-    void renderInstanceLockouts(game::GameHandler& gameHandler);
     void renderNameplates(game::GameHandler& gameHandler);
-    void renderBattlegroundScore(game::GameHandler& gameHandler);
-    void renderDPSMeter(game::GameHandler& gameHandler);
     void renderDurabilityWarning(game::GameHandler& gameHandler);
     void takeScreenshot(game::GameHandler& gameHandler);
 
@@ -239,144 +175,13 @@ private:
     bool spellIconDbLoaded_ = false;
     VkDescriptorSet getSpellIcon(uint32_t spellId, pipeline::AssetManager* am);
 
-    // ItemExtendedCost.dbc cache: extendedCostId -> cost details
-    struct ExtendedCostEntry {
-        uint32_t honorPoints = 0;
-        uint32_t arenaPoints = 0;
-        uint32_t itemId[5] = {};
-        uint32_t itemCount[5] = {};
-    };
-    std::unordered_map<uint32_t, ExtendedCostEntry> extendedCostCache_;
-    bool extendedCostDbLoaded_ = false;
-    void loadExtendedCostDBC();
-    std::string formatExtendedCost(uint32_t extendedCostId, game::GameHandler& gameHandler);
-
-    // Macro cooldown cache: maps macro ID → resolved primary spell ID (0 = no spell found)
-    std::unordered_map<uint32_t, uint32_t> macroPrimarySpellCache_;
-    size_t macroCacheSpellCount_ = 0;  // invalidates cache when spell list changes
-    uint32_t resolveMacroPrimarySpellId(uint32_t macroId, game::GameHandler& gameHandler);
-
     // Death Knight rune bar: client-predicted fill (0.0=depleted, 1.0=ready) for smooth animation
     float runeClientFill_[6] = {1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
 
-    // Action bar drag state (-1 = not dragging)
-    int actionBarDragSlot_ = -1;
-    VkDescriptorSet actionBarDragIcon_ = VK_NULL_HANDLE;
-
-    // Bag bar state
-    VkDescriptorSet backpackIconTexture_ = VK_NULL_HANDLE;
-    VkDescriptorSet emptyBagSlotTexture_ = VK_NULL_HANDLE;
-    int bagBarPickedSlot_ = -1;   // Visual drag in progress (-1 = none)
-    int bagBarDragSource_ = -1;   // Mouse pressed on this slot, waiting for drag or click (-1 = none)
-
-    // Who Results window
-    bool  showWhoWindow_ = false;
-    void  renderWhoWindow(game::GameHandler& gameHandler);
-
-    // Combat Log window
-    bool  showCombatLog_ = false;
-    void  renderCombatLog(game::GameHandler& gameHandler);
-
-    // Instance Lockouts window
-    bool  showInstanceLockouts_ = false;
-
-    // Dungeon Finder state
-    bool  showDungeonFinder_ = false;
-
-    // Achievements window
-    bool  showAchievementWindow_ = false;
-    char  achievementSearchBuf_[128] = {};
-    void  renderAchievementWindow(game::GameHandler& gameHandler);
-
-    // Skills / Professions window (K key)
-    bool  showSkillsWindow_ = false;
-    void  renderSkillsWindow(game::GameHandler& gameHandler);
-
-    // Titles window
-    bool  showTitlesWindow_ = false;
-    void  renderTitlesWindow(game::GameHandler& gameHandler);
-
-    // Equipment Set Manager window
-    bool  showEquipSetWindow_ = false;
-    void  renderEquipSetWindow(game::GameHandler& gameHandler);
-
-    // GM Ticket window
-    bool  showGmTicketWindow_     = false;
-    bool  gmTicketWindowWasOpen_  = false; ///< Previous frame state; used to fire one-shot query
-    char  gmTicketBuf_[2048] = {};
-    void  renderGmTicketWindow(game::GameHandler& gameHandler);
-
     // Pet rename modal (triggered from pet frame context menu)
     bool petRenameOpen_ = false;
     char petRenameBuf_[16] = {};
 
-    // Inspect window
-    bool  showInspectWindow_ = false;
-    void  renderInspectWindow(game::GameHandler& gameHandler);
-
-    // Readable text window (books / scrolls / notes)
-    bool  showBookWindow_ = false;
-    int   bookCurrentPage_ = 0;
-    void  renderBookWindow(game::GameHandler& gameHandler);
-
-    // Threat window
-    bool  showThreatWindow_ = false;
-    void  renderThreatWindow(game::GameHandler& gameHandler);
-
-    // BG scoreboard window
-    bool  showBgScoreboard_ = false;
-    void  renderBgScoreboard(game::GameHandler& gameHandler);
-    uint8_t lfgRoles_ = 0x08;  // default: DPS (0x02=tank, 0x04=healer, 0x08=dps)
-    uint32_t lfgSelectedDungeon_ = 861;  // default: random dungeon (entry 861 = Random Dungeon WotLK)
-
-    // Mail compose state
-    char mailRecipientBuffer_[256] = "";
-    char mailSubjectBuffer_[256] = "";
-    char mailBodyBuffer_[2048] = "";
-    int mailComposeMoney_[3] = {0, 0, 0};  // gold, silver, copper
-
-    // Vendor search filter
-    char vendorSearchFilter_[128] = "";
-
-    // Vendor purchase confirmation for expensive items
-    bool vendorConfirmOpen_ = false;
-    uint64_t vendorConfirmGuid_ = 0;
-    uint32_t vendorConfirmItemId_ = 0;
-    uint32_t vendorConfirmSlot_ = 0;
-    uint32_t vendorConfirmQty_ = 1;
-    uint32_t vendorConfirmPrice_ = 0;
-    std::string vendorConfirmItemName_;
-
-    // Barber shop UI state
-    int barberHairStyle_ = 0;
-    int barberHairColor_ = 0;
-    int barberFacialHair_ = 0;
-    int barberOrigHairStyle_ = 0;
-    int barberOrigHairColor_ = 0;
-    int barberOrigFacialHair_ = 0;
-    bool barberInitialized_ = false;
-
-    // Trainer search filter
-    char trainerSearchFilter_[128] = "";
-
-    // Auction house UI state
-    char auctionSearchName_[256] = "";
-    int auctionLevelMin_ = 0;
-    int auctionLevelMax_ = 0;
-    int auctionQuality_ = 0;
-    int auctionSellDuration_ = 2;  // 0=12h, 1=24h, 2=48h
-    int auctionSellBid_[3] = {0, 0, 0};     // gold, silver, copper
-    int auctionSellBuyout_[3] = {0, 0, 0};  // gold, silver, copper
-    int auctionSelectedItem_ = -1;
-    int auctionSellSlotIndex_ = -1;          // Selected backpack slot for selling
-    uint32_t auctionBrowseOffset_ = 0;       // Pagination offset for browse results
-    int auctionItemClass_ = -1;              // Item class filter (-1 = All)
-    int auctionItemSubClass_ = -1;           // Item subclass filter (-1 = All)
-    bool auctionUsableOnly_ = false;         // Filter to items usable by current class/level
-
-    // Guild bank money input
-    int guildBankMoneyInput_[3] = {0, 0, 0};  // gold, silver, copper
-
     // Left-click targeting: distinguish click from camera drag
     glm::vec2 leftClickPressPos_ = glm::vec2(0.0f);
     bool leftClickWasPress_ = false;
@@ -390,15 +195,8 @@ private:
 
     void renderWeatherOverlay(game::GameHandler& gameHandler);
 
-    // DPS / HPS meter
-    float dpsCombatAge_ = 0.0f;   // seconds in current combat (for accurate early-combat DPS)
-    bool dpsWasInCombat_ = false;
-    float dpsEncounterDamage_ = 0.0f;  // total player damage this combat
-    float dpsEncounterHeal_   = 0.0f;  // total player healing this combat
-    size_t dpsLogSeenCount_   = 0;     // log entries already scanned
-
 public:
-    void openDungeonFinder() { showDungeonFinder_ = true; }
+    void openDungeonFinder() { socialPanel_.showDungeonFinder_ = true; }
     ToastManager& toastManager() { return toastManager_; }
 };
 

include/ui/social_panel.hpp

@@ -0,0 +1,77 @@
+#pragma once
+
+#include <imgui.h>
+#include <vulkan/vulkan.h>
+#include <string>
+#include <vector>
+#include <cstdint>
+#include <functional>
+
+namespace wowee {
+namespace game { class GameHandler; }
+namespace pipeline { class AssetManager; }
+namespace ui {
+
+class ChatPanel;
+class SpellbookScreen;
+class InventoryScreen;
+
+/**
+ * Social panel manager (extracted from GameScreen)
+ *
+ * Owns all social/group-related rendering:
+ *   party frames, boss frames, guild roster, social/friends frame,
+ *   dungeon finder, who window, inspect window.
+ */
+class SocialPanel {
+public:
+    SocialPanel() = default;
+
+    // ---- Callback type for spell icon lookup (stays in GameScreen) ----
+    using SpellIconFn = std::function<VkDescriptorSet(uint32_t spellId, pipeline::AssetManager*)>;
+
+    // ---- Toggle booleans (written by slash commands / escape handler / keybinds / UI buttons) ----
+    bool showSocialFrame_ = false;   // O key toggles social/friends list
+    bool showGuildRoster_ = false;
+    bool showRaidFrames_ = true;     // F key toggles raid/party frames
+    bool showWhoWindow_ = false;
+    bool showDungeonFinder_ = false;
+    bool showInspectWindow_ = false;
+
+    // ---- Guild roster state ----
+    std::string selectedGuildMember_;
+    bool showGuildNoteEdit_ = false;
+    bool editingOfficerNote_ = false;
+    char guildNoteEditBuffer_[256] = {0};
+    int guildRosterTab_ = 0;         // 0=Roster, 1=Guild Info
+    char guildMotdEditBuffer_[256] = {0};
+    bool showMotdEdit_ = false;
+    char petitionNameBuffer_[64] = {0};
+    char addRankNameBuffer_[64] = {0};
+    bool showAddRankModal_ = false;
+
+    // ---- LFG state ----
+    uint8_t lfgRoles_ = 0x08;           // default: DPS (0x02=tank, 0x04=healer, 0x08=dps)
+    uint32_t lfgSelectedDungeon_ = 861;  // default: random dungeon (entry 861)
+
+    // ---- Public render methods ----
+    void renderPartyFrames(game::GameHandler& gameHandler,
+                           ChatPanel& chatPanel,
+                           SpellIconFn getSpellIcon);
+    void renderBossFrames(game::GameHandler& gameHandler,
+                          SpellbookScreen& spellbookScreen,
+                          SpellIconFn getSpellIcon);
+    void renderGuildRoster(game::GameHandler& gameHandler,
+                           ChatPanel& chatPanel);
+    void renderSocialFrame(game::GameHandler& gameHandler,
+                           ChatPanel& chatPanel);
+    void renderDungeonFinderWindow(game::GameHandler& gameHandler,
+                                   ChatPanel& chatPanel);
+    void renderWhoWindow(game::GameHandler& gameHandler,
+                         ChatPanel& chatPanel);
+    void renderInspectWindow(game::GameHandler& gameHandler,
+                             InventoryScreen& inventoryScreen);
+};
+
+} // namespace ui
+} // namespace wowee

include/ui/window_manager.hpp

@@ -0,0 +1,182 @@
+// ============================================================
+// WindowManager — extracted from GameScreen
+// Owns all NPC interaction windows, popup dialogs, and misc
+// overlay UI: loot, gossip, quest, vendor, trainer, mail, bank,
+// auction house, barber, stable, taxi, escape menu, death screen,
+// instance lockouts, achievements, GM ticket, books, titles,
+// equipment sets, skills.
+// ============================================================
+#pragma once
+#include <cstdint>
+#include <string>
+#include <unordered_map>
+#include <functional>
+#include <vulkan/vulkan.h>
+
+namespace wowee {
+namespace game { class GameHandler; }
+namespace pipeline { class AssetManager; }
+namespace ui {
+
+class ChatPanel;
+class SettingsPanel;
+class InventoryScreen;
+class SpellbookScreen;
+
+class WindowManager {
+public:
+    // Callback type for resolving spell icons (spellId, assetMgr) → VkDescriptorSet
+    using SpellIconFn = std::function<VkDescriptorSet(uint32_t, pipeline::AssetManager*)>;
+
+    // ---- NPC interaction windows ----
+    void renderLootWindow(game::GameHandler& gameHandler,
+                          InventoryScreen& inventoryScreen,
+                          ChatPanel& chatPanel);
+    void renderGossipWindow(game::GameHandler& gameHandler,
+                            ChatPanel& chatPanel);
+    void renderQuestDetailsWindow(game::GameHandler& gameHandler,
+                                  ChatPanel& chatPanel,
+                                  InventoryScreen& inventoryScreen);
+    void renderQuestRequestItemsWindow(game::GameHandler& gameHandler,
+                                       ChatPanel& chatPanel,
+                                       InventoryScreen& inventoryScreen);
+    void renderQuestOfferRewardWindow(game::GameHandler& gameHandler,
+                                      ChatPanel& chatPanel,
+                                      InventoryScreen& inventoryScreen);
+    void renderVendorWindow(game::GameHandler& gameHandler,
+                            InventoryScreen& inventoryScreen,
+                            ChatPanel& chatPanel);
+    void renderTrainerWindow(game::GameHandler& gameHandler,
+                             SpellIconFn getSpellIcon);
+    void renderBarberShopWindow(game::GameHandler& gameHandler);
+    void renderStableWindow(game::GameHandler& gameHandler);
+    void renderTaxiWindow(game::GameHandler& gameHandler);
+
+    // ---- Mail and banking ----
+    void renderMailWindow(game::GameHandler& gameHandler,
+                          InventoryScreen& inventoryScreen,
+                          ChatPanel& chatPanel);
+    void renderMailComposeWindow(game::GameHandler& gameHandler,
+                                 InventoryScreen& inventoryScreen);
+    void renderBankWindow(game::GameHandler& gameHandler,
+                          InventoryScreen& inventoryScreen,
+                          ChatPanel& chatPanel);
+    void renderGuildBankWindow(game::GameHandler& gameHandler,
+                               InventoryScreen& inventoryScreen,
+                               ChatPanel& chatPanel);
+    void renderAuctionHouseWindow(game::GameHandler& gameHandler,
+                                  InventoryScreen& inventoryScreen,
+                                  ChatPanel& chatPanel);
+
+    // ---- Popup / overlay windows ----
+    void renderEscapeMenu(SettingsPanel& settingsPanel);
+    void renderLogoutCountdown(game::GameHandler& gameHandler);
+    void renderDeathScreen(game::GameHandler& gameHandler);
+    void renderReclaimCorpseButton(game::GameHandler& gameHandler);
+    void renderInstanceLockouts(game::GameHandler& gameHandler);
+    void renderAchievementWindow(game::GameHandler& gameHandler);
+    void renderGmTicketWindow(game::GameHandler& gameHandler);
+    void renderBookWindow(game::GameHandler& gameHandler);
+    void renderTitlesWindow(game::GameHandler& gameHandler);
+    void renderEquipSetWindow(game::GameHandler& gameHandler);
+    void renderSkillsWindow(game::GameHandler& gameHandler);
+
+    // ---- State owned by this manager ----
+
+    // Instance lockouts
+    bool showInstanceLockouts_ = false;
+
+    // Achievements
+    bool showAchievementWindow_ = false;
+    char achievementSearchBuf_[128] = {};
+
+    // Skills / Professions
+    bool showSkillsWindow_ = false;
+
+    // Titles
+    bool showTitlesWindow_ = false;
+
+    // Equipment Sets
+    bool showEquipSetWindow_ = false;
+
+    // GM Ticket
+    bool showGmTicketWindow_     = false;
+    bool gmTicketWindowWasOpen_  = false;
+    char gmTicketBuf_[2048] = {};
+
+    // Book / scroll reader
+    bool showBookWindow_ = false;
+    int  bookCurrentPage_ = 0;
+
+    // Death screen
+    float deathElapsed_ = 0.0f;
+    bool deathTimerRunning_ = false;
+    static constexpr float kForcedReleaseSec = 360.0f;
+
+    // Escape menu
+    bool showEscapeMenu = false;
+
+    // Mail compose
+    char mailRecipientBuffer_[256] = "";
+    char mailSubjectBuffer_[256] = "";
+    char mailBodyBuffer_[2048] = "";
+    int mailComposeMoney_[3] = {0, 0, 0};
+
+    // Vendor
+    char vendorSearchFilter_[128] = "";
+    bool vendorConfirmOpen_ = false;
+    uint64_t vendorConfirmGuid_ = 0;
+    uint32_t vendorConfirmItemId_ = 0;
+    uint32_t vendorConfirmSlot_ = 0;
+    uint32_t vendorConfirmQty_ = 1;
+    uint32_t vendorConfirmPrice_ = 0;
+    std::string vendorConfirmItemName_;
+    bool vendorBagsOpened_ = false;
+
+    // Barber shop
+    int barberHairStyle_ = 0;
+    int barberHairColor_ = 0;
+    int barberFacialHair_ = 0;
+    int barberOrigHairStyle_ = 0;
+    int barberOrigHairColor_ = 0;
+    int barberOrigFacialHair_ = 0;
+    bool barberInitialized_ = false;
+
+    // Trainer
+    char trainerSearchFilter_[128] = "";
+
+    // Auction house
+    char auctionSearchName_[256] = "";
+    int auctionLevelMin_ = 0;
+    int auctionLevelMax_ = 0;
+    int auctionQuality_ = 0;
+    int auctionSellDuration_ = 2;
+    int auctionSellBid_[3] = {0, 0, 0};
+    int auctionSellBuyout_[3] = {0, 0, 0};
+    int auctionSelectedItem_ = -1;
+    int auctionSellSlotIndex_ = -1;
+    uint32_t auctionBrowseOffset_ = 0;
+    int auctionItemClass_ = -1;
+    int auctionItemSubClass_ = -1;
+    bool auctionUsableOnly_ = false;
+
+    // Guild bank money input
+    int guildBankMoneyInput_[3] = {0, 0, 0};
+
+    // ItemExtendedCost.dbc cache
+    struct ExtendedCostEntry {
+        uint32_t honorPoints = 0;
+        uint32_t arenaPoints = 0;
+        uint32_t itemId[5] = {};
+        uint32_t itemCount[5] = {};
+    };
+    std::unordered_map<uint32_t, ExtendedCostEntry> extendedCostCache_;
+    bool extendedCostDbLoaded_ = false;
+
+private:
+    void loadExtendedCostDBC();
+    std::string formatExtendedCost(uint32_t extendedCostId, game::GameHandler& gameHandler);
+};
+
+} // namespace ui
+} // namespace wowee