[Crash] Unchecked mentions[0] array access in whisper chat

[coderabbitai]

Summary

Game server crashes when mentions[0] is undefined in whisper message handling.

Affected Code

server-game/src/client.js:351-353

if (mentions[0]) {
  this.room.packChat(output, text, this.id, Comm.Chat.whisper);
  mentions[0].forEach(player => { // CRASH if mentions is [undefined]

Vulnerability

If mentions[0] is explicitly undefined (array containing undefined), forEach crashes.

Impact

• Game server crash on whisper
• Denial of service

Recommended Fix

if (mentions[0] && Array.isArray(mentions[0])) {
  mentions[0].forEach(player => {

References

• PR: New Blocks & Ported fancyMuzzle flash #43