Fix gossip message parsing for Vanilla/Turtle (flight master hang)

Classic gossip packets lack the menuId field and quest items don't have
questFlags/isRepeatable, causing the WotLK parser to read garbage counts
(541M quests) and hang. Added ClassicPacketParsers::parseGossipMessage
override with the correct vanilla format.

include/game/packet_parsers.hpp

@@ -117,6 +117,13 @@ public:
         return NameQueryResponseParser::parse(packet, data);
     }
 
+    // --- Gossip ---
+
+    /** Parse SMSG_GOSSIP_MESSAGE */
+    virtual bool parseGossipMessage(network::Packet& packet, GossipMessageData& data) {
+        return GossipMessageParser::parse(packet, data);
+    }
+
     // --- Destroy Object ---
 
     /** Parse SMSG_DESTROY_OBJECT */
@@ -226,6 +233,7 @@ public:
     network::Packet buildCastSpell(uint32_t spellId, uint64_t targetGuid, uint8_t castCount) override;
     bool parseCastFailed(network::Packet& packet, CastFailedData& data) override;
     bool parseMessageChat(network::Packet& packet, MessageChatData& data) override;
+    bool parseGossipMessage(network::Packet& packet, GossipMessageData& data) override;
     bool parseGuildRoster(network::Packet& packet, GuildRosterData& data) override;
     bool parseGuildQueryResponse(network::Packet& packet, GuildQueryResponseData& data) override;
     network::Packet buildJoinChannel(const std::string& channelName, const std::string& password) override;

src/game/game_handler.cpp

@@ -7655,7 +7655,9 @@ void GameHandler::handleLootRemoved(network::Packet& packet) {
 }
 
 void GameHandler::handleGossipMessage(network::Packet& packet) {
-    if (!GossipMessageParser::parse(packet, currentGossip)) return;
+    bool ok = packetParsers_ ? packetParsers_->parseGossipMessage(packet, currentGossip)
+                             : GossipMessageParser::parse(packet, currentGossip);
+    if (!ok) return;
     if (questDetailsOpen) return; // Don't reopen gossip while viewing quest
     gossipWindowOpen = true;
     vendorWindowOpen = false; // Close vendor if gossip opens

src/game/packet_parsers_classic.cpp

@@ -580,5 +580,54 @@ bool ClassicPacketParsers::parseGuildQueryResponse(network::Packet& packet, Guil
     return true;
 }
 
+// ============================================================================
+// Gossip — Classic has no menuId, and quest items lack questFlags + isRepeatable
+// ============================================================================
+
+bool ClassicPacketParsers::parseGossipMessage(network::Packet& packet, GossipMessageData& data) {
+    size_t remaining = packet.getSize() - packet.getReadPos();
+    if (remaining < 8 + 4 + 4) {
+        LOG_ERROR("Classic SMSG_GOSSIP_MESSAGE too small: ", remaining, " bytes");
+        return false;
+    }
+
+    data.npcGuid = packet.readUInt64();
+    // Classic: NO menuId field (WotLK adds uint32 menuId here)
+    data.menuId = 0;
+    data.titleTextId = packet.readUInt32();
+    uint32_t optionCount = packet.readUInt32();
+
+    data.options.clear();
+    data.options.reserve(optionCount);
+    for (uint32_t i = 0; i < optionCount; ++i) {
+        GossipOption opt;
+        opt.id = packet.readUInt32();
+        opt.icon = packet.readUInt8();
+        opt.isCoded = (packet.readUInt8() != 0);
+        opt.boxMoney = packet.readUInt32();
+        opt.text = packet.readString();
+        opt.boxText = packet.readString();
+        data.options.push_back(opt);
+    }
+
+    uint32_t questCount = packet.readUInt32();
+    data.quests.clear();
+    data.quests.reserve(questCount);
+    for (uint32_t i = 0; i < questCount; ++i) {
+        GossipQuestItem quest;
+        quest.questId = packet.readUInt32();
+        quest.questIcon = packet.readUInt32();
+        quest.questLevel = static_cast<int32_t>(packet.readUInt32());
+        // Classic: NO questFlags, NO isRepeatable
+        quest.questFlags = 0;
+        quest.isRepeatable = 0;
+        quest.title = packet.readString();
+        data.quests.push_back(quest);
+    }
+
+    LOG_INFO("Classic Gossip: ", optionCount, " options, ", questCount, " quests");
+    return true;
+}
+
 } // namespace game
 } // namespace wowee