fix(chat): resolve /r reply target when name arrives after whisper

Whisper sender name may not be in the player name cache when the packet
arrives. Store the sender GUID and lazily resolve the name from the
cache in getLastWhisperSender(). Also backfill lastWhisperSender_ when
the SMSG_NAME_QUERY_RESPONSE arrives.

include/game/game_handler.hpp

@@ -606,7 +606,16 @@ public:
     bool isAfk() const { return afkStatus_; }
     bool isDnd() const { return dndStatus_; }
     void replyToLastWhisper(const std::string& message);
-    std::string getLastWhisperSender() const { return lastWhisperSender_; }
+    std::string getLastWhisperSender() const {
+        if (!lastWhisperSender_.empty()) return lastWhisperSender_;
+        // Name may not have been cached when whisper arrived — resolve from GUID
+        if (lastWhisperSenderGuid_ != 0) {
+            const auto& cache = getPlayerNameCache();
+            auto it = cache.find(lastWhisperSenderGuid_);
+            if (it != cache.end()) return it->second;
+        }
+        return "";
+    }
     void setLastWhisperSender(const std::string& name) { lastWhisperSender_ = name; }
 
     // Party/Raid management
@@ -2436,6 +2445,7 @@ private:
     std::string afkMessage_;
     std::string dndMessage_;
     std::string lastWhisperSender_;
+    uint64_t lastWhisperSenderGuid_ = 0;
 
     // ---- Online item tracking ----
     struct OnlineItemInfo {

src/game/chat_handler.cpp

@@ -255,15 +255,22 @@ void ChatHandler::handleMessageChat(network::Packet& packet) {
     }
 
     // Track whisper sender for /r command
-    if (data.type == ChatType::WHISPER && !data.senderName.empty()) {
-        owner_.lastWhisperSender_ = data.senderName;
+    if (data.type == ChatType::WHISPER) {
+        // Always store GUID so getLastWhisperSender() can resolve the name
+        // from the player name cache even if name wasn't available yet
+        if (data.senderGuid != 0)
+            owner_.lastWhisperSenderGuid_ = data.senderGuid;
+        if (!data.senderName.empty())
+            owner_.lastWhisperSender_ = data.senderName;
 
-        if (owner_.afkStatus_ && !data.senderName.empty()) {
-            std::string reply = owner_.afkMessage_.empty() ? "Away from Keyboard" : owner_.afkMessage_;
-            sendChatMessage(ChatType::WHISPER, "<AFK> " + reply, data.senderName);
-        } else if (owner_.dndStatus_ && !data.senderName.empty()) {
-            std::string reply = owner_.dndMessage_.empty() ? "Do Not Disturb" : owner_.dndMessage_;
-            sendChatMessage(ChatType::WHISPER, "<DND> " + reply, data.senderName);
+        if (!data.senderName.empty()) {
+            if (owner_.afkStatus_) {
+                std::string reply = owner_.afkMessage_.empty() ? "Away from Keyboard" : owner_.afkMessage_;
+                sendChatMessage(ChatType::WHISPER, "<AFK> " + reply, data.senderName);
+            } else if (owner_.dndStatus_) {
+                std::string reply = owner_.dndMessage_.empty() ? "Do Not Disturb" : owner_.dndMessage_;
+                sendChatMessage(ChatType::WHISPER, "<DND> " + reply, data.senderName);
+            }
         }
     }
 

src/game/entity_controller.cpp

@@ -1988,6 +1988,11 @@ void EntityController::handleNameQueryResponse(network::Packet& packet) {
             }
         }
 
+        // Backfill whisper reply target if the name arrived after the whisper.
+        if (owner_.lastWhisperSenderGuid_ == data.guid && owner_.lastWhisperSender_.empty()) {
+            owner_.lastWhisperSender_ = data.name;
+        }
+
         // Backfill mail inbox sender names
         for (auto& mail : owner_.mailInbox_) {
             if (mail.messageType == 0 && mail.senderGuid == data.guid) {