Add Hytale player detection via log parsing

- Add getHytalePlayers function to ssh.js that parses server logs
- Track player joins via [Universe|P] Adding player pattern
- Track disconnects via Removing player pattern
- Integrate with rcon.js getPlayers and getPlayerList functions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

gsm-backend/services/ssh.js

@@ -643,8 +643,50 @@ export async function writeOpenTTDConfig(server, content) {
   return true;
 }
 
-// Hytale Config Management
+// ============ HYTALE FUNCTIONS ============
 const HYTALE_CONFIG_PATH = "/opt/hytale/Server/config.json";
+const HYTALE_LOGS_PATH = "/opt/hytale/Server/logs";
+
+// Get Hytale players by parsing server logs
+export async function getHytalePlayers(server) {
+  const ssh = await getConnection(server.host, server.sshUser);
+
+  // Find the most recent log file
+  const logFileResult = await ssh.execCommand(`ls -t ${HYTALE_LOGS_PATH}/*.log 2>/dev/null | head -1`);
+  if (!logFileResult.stdout.trim()) {
+    return { online: 0, players: [] };
+  }
+
+  const logFile = logFileResult.stdout.trim();
+
+  // Parse log for player joins and disconnects
+  // Join pattern: [Universe|P] Adding player 'PlayerName (UUID)
+  // Disconnect pattern: Search for connection closed or player removed
+  const result = await ssh.execCommand(`grep -E "\\[Universe\\|P\\] Adding player|Removing player|Connection.*closed|disconnect" ${logFile} 2>/dev/null | tail -200`);
+
+  const players = new Map(); // UUID -> PlayerName
+
+  const lines = result.stdout.split('\n');
+  for (const line of lines) {
+    // Check for player join
+    const joinMatch = line.match(/\[Universe\|P\] Adding player '([^']+) \(([a-f0-9-]+)\)/i);
+    if (joinMatch) {
+      const playerName = joinMatch[1];
+      const uuid = joinMatch[2];
+      players.set(uuid, playerName);
+      continue;
+    }
+
+    // Check for player disconnect (various patterns)
+    const disconnectMatch = line.match(/Removing player.*\(([a-f0-9-]+)\)/i);
+    if (disconnectMatch) {
+      players.delete(disconnectMatch[1]);
+    }
+  }
+
+  const playerList = Array.from(players.values());
+  return { online: playerList.length, players: playerList };
+}
 
 export async function readHytaleConfig(server) {
   const ssh = await getConnection(server.host, server.sshUser);