Fix Turtle WoW compatibility: NPC spawning, quests, spells, realm display, and music

- Add TurtlePacketParsers with dedicated movement block parser (Classic format + transport timestamp)
- Fix quest giver status: read uint32 and translate vanilla enum values for Classic/Turtle
- Fix quest accept packet: remove trailing uint32 that vanilla servers reject
- Fix quest details parser: auto-detect vanilla vs WotLK format (informUnit field)
- Fix spellbook and action bar icons: fallback to WotLK DBC field indices when expansion layout fails
- Fix spell cast failure messages: translate vanilla SpellCastResult codes (+1 offset)
- Fix realm list: correct type values (6=RP, 8=RP-PvP) and population thresholds
- Fix music: disable looping for zone music, auto-advance to next random track when finished
- Add music anti-repeat: avoid playing the same track back-to-back
- Make TBC update block parsing resilient (keep parsed blocks on failure instead of aborting)
- Add right-click attack on hostile mobs
- Add name query diagnostic logging

src/game/zone_manager.cpp

@@ -430,14 +430,26 @@ const ZoneInfo* ZoneManager::getZoneInfo(uint32_t zoneId) const {
     return nullptr;
 }
 
-std::string ZoneManager::getRandomMusic(uint32_t zoneId) const {
+std::string ZoneManager::getRandomMusic(uint32_t zoneId) {
     auto it = zones.find(zoneId);
     if (it == zones.end() || it->second.musicPaths.empty()) {
         return "";
     }
 
     const auto& paths = it->second.musicPaths;
-    return paths[std::rand() % paths.size()];
+    if (paths.size() == 1) {
+        lastPlayedMusic_ = paths[0];
+        return paths[0];
+    }
+
+    // Avoid playing the same track back-to-back
+    std::string pick;
+    for (int attempts = 0; attempts < 5; ++attempts) {
+        pick = paths[std::rand() % paths.size()];
+        if (pick != lastPlayedMusic_) break;
+    }
+    lastPlayedMusic_ = pick;
+    return pick;
 }
 
 std::vector<std::string> ZoneManager::getAllMusicPaths() const {