Changelog
- Add reverse_engineered.md section 57 with vtable map, Process/Create addresses (0x8C0743/0x8C0AAB/0x8C0B85/0x8C0D04/0x8C0ED0/0x8C0FB6/0x876C96), full field layout for all 7 packets, ActionType+ActionInfo tables, match lifecycle protocol trace, and UI message ID catalogue (0xC13/0xC19/0xC1A/0xC1D/0xC1F/0xC20/0xC26/0xBE7)
- Update ALL_PACKET_STRUCTURES_6609.txt with named fields for 2205/2206/2207/2208/2209/2210/2211 (previously marked as anonymous uint32 slots)
- Add migration table rows #49-55 for arena packets (DONE)
- Add Arena Qualifier row to systems.md under PvP subsystems