Fix talent system packet parsing and rank logic

- Parse SMSG_TALENTS_INFO with correct byte-for-byte structure:
  * Header: uint8 spec, uint8 unspent, be32 talentCount, be16 entryCount
  * Entries: entryCount × (le32 id + uint8 rank)
  * Glyphs: uint8 glyphSlots + glyphSlots × le16 glyphId
- Fix rank storage: store all talents from packet (rank 0 = first point)
- Fix UI rank logic: send rank 0 for new, rank+1 for upgrades
- Fix rank display: show (rank+1) for learned talents
- Add sanity checks: entryCount max 64, glyphSlots max 12
- Add network boundary logging for packet debugging

include/game/world_packets.hpp

@@ -1768,6 +1768,7 @@ struct TalentsInfoData {
     uint8_t talentSpec = 0;           // Active spec (0 or 1 for dual-spec)
     uint8_t unspentPoints = 0;        // Talent points available
     std::vector<TalentInfo> talents;  // Learned talents
+    std::vector<uint32_t> glyphs;     // Glyph spell IDs
 
     bool isValid() const { return true; }
 };