Add Terraria player detection via log parsing

- Add getTerrariaPlayers function in ssh.js for PM2 log parsing
- Support German and English join/leave messages
- Update rcon.js to use Terraria log parsing
- Add Terraria to player fetch conditions in servers.js
- Update autoshutdown.js and discordBot.js for Terraria support
- Update config path to tModLoader directory
- Add global error handlers in server.js
- Update CLAUDE.md with deployment rules and Terraria info

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

gsm-backend/services/ssh.js

@@ -580,7 +580,7 @@ export async function writePalworldConfig(server, filename, content) {
 }
 
 // ============ TERRARIA CONFIG ============
-const TERRARIA_CONFIG_PATH = "/home/terraria/serverconfig.txt";
+const TERRARIA_CONFIG_PATH = "/home/terraria/tModLoader/serverconfig.txt";
 
 export async function readTerrariaConfig(server) {
   const ssh = await getConnection(server.host, server.sshUser);
@@ -598,7 +598,7 @@ export async function writeTerrariaConfig(server, content) {
 
   // Create backup
   const backupName = `serverconfig.txt.backup.${Date.now()}`;
-  await ssh.execCommand(`cp ${TERRARIA_CONFIG_PATH} /home/terraria/${backupName} 2>/dev/null || true`);
+  await ssh.execCommand(`cp ${TERRARIA_CONFIG_PATH} /home/terraria/tModLoader/${backupName} 2>/dev/null || true`);
 
   // Write file using sftp
   const sftp = await ssh.requestSFTP();
@@ -611,7 +611,7 @@ export async function writeTerrariaConfig(server, content) {
   });
 
   // Clean up old backups (keep last 5)
-  await ssh.execCommand(`ls -t /home/terraria/serverconfig.txt.backup.* 2>/dev/null | tail -n +6 | xargs rm -f 2>/dev/null || true`);
+  await ssh.execCommand(`ls -t /home/terraria/tModLoader/serverconfig.txt.backup.* 2>/dev/null | tail -n +6 | xargs rm -f 2>/dev/null || true`);
 
   return true;
 }
@@ -643,6 +643,57 @@ export async function writeOpenTTDConfig(server, content) {
   return true;
 }
 
+// ============ TERRARIA FUNCTIONS ============
+// Get Terraria players by parsing PM2 logs
+export async function getTerrariaPlayers(server) {
+  try {
+    const ssh = await getConnection(server.host, server.sshUser);
+
+    // Get last 500 lines of PM2 logs
+    const nvmPrefix = "source ~/.nvm/nvm.sh && ";
+    const result = await ssh.execCommand(nvmPrefix + `pm2 logs ${server.serviceName} --lines 500 --nostream 2>/dev/null | grep -E "ist beigetreten|hat das Spiel verlassen|has joined|has left" | tail -100`);
+
+    const players = new Map(); // PlayerName -> true
+
+    const lines = result.stdout.split('\n').filter(l => l.trim());
+    for (const line of lines) {
+      // German: "Lokführer ist beigetreten." / "Lokführer hat das Spiel verlassen."
+      // English: "PlayerName has joined." / "PlayerName has left."
+
+      // Join patterns
+      const joinMatchDE = line.match(/^\d+\|[^\|]+\s*\|\s*(.+?)\s+ist beigetreten\.?$/i);
+      const joinMatchEN = line.match(/^\d+\|[^\|]+\s*\|\s*(.+?)\s+has joined\.?$/i);
+
+      if (joinMatchDE) {
+        players.set(joinMatchDE[1].trim(), true);
+        continue;
+      }
+      if (joinMatchEN) {
+        players.set(joinMatchEN[1].trim(), true);
+        continue;
+      }
+
+      // Leave patterns
+      const leaveMatchDE = line.match(/^\d+\|[^\|]+\s*\|\s*(.+?)\s+hat das Spiel verlassen\.?$/i);
+      const leaveMatchEN = line.match(/^\d+\|[^\|]+\s*\|\s*(.+?)\s+has left\.?$/i);
+
+      if (leaveMatchDE) {
+        players.delete(leaveMatchDE[1].trim());
+        continue;
+      }
+      if (leaveMatchEN) {
+        players.delete(leaveMatchEN[1].trim());
+      }
+    }
+
+    const playerList = Array.from(players.keys());
+    return { online: playerList.length, players: playerList };
+  } catch (err) {
+    console.error(`[Terraria] Error getting players:`, err.message);
+    return { online: 0, players: [] };
+  }
+}
+
 // ============ HYTALE FUNCTIONS ============
 const HYTALE_CONFIG_PATH = "/opt/hytale/Server/config.json";
 const HYTALE_LOGS_PATH = "/opt/hytale/Server/logs";