v1.7.23

Protocol routing and STATS delta compression

E-3: Centralize Protocol Routing

• Moved TIME_ACK and VISIBILITY handling from connection layer into driver's onPlayerInput()
• All protocol message dispatch now centralized in one method
• Added setTabVisible() and sendTimePong() public methods on Connection

E-4: STATS Delta Compression

• Server tracks last-sent stats and sends only changed fields as type: 'delta'
• Full snapshot every 10th send; deltas in between
• No message sent when nothing changed (idle players)
• ~92% bandwidth reduction for combat HP/MP updates, 100% for idle