- Change `LevelUpInfo` to signed to match vanilla behavior
- Add parse test for negative values in SMSG_LEVELUP_INFO, update comments
- grammar
- level-up gains: cite the %d fire and vmangos's wrapped deltas; pin the reported line
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Sam <samuv.eth@gmail.com>