Add Space Engineers server support

Integrates Space Engineers dedicated server (docker+wine on 192.168.2.78) into GSM:
- config.json entry with docker runtime and log-based player detection
- getSpaceEngineersPlayers() parses docker logs for connect/disconnect events
- Extends type-check sites in rcon, autoshutdown, discordBot, servers routes
- Frontend ServerCard/ServerDetail logo + address wiring

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

gsm-backend/services/ssh.js

@@ -694,6 +694,42 @@ export async function getTerrariaPlayers(server) {
   }
 }
 
+// ============ SPACE ENGINEERS FUNCTIONS ============
+
+// Get Space Engineers players by parsing docker logs
+export async function getSpaceEngineersPlayers(server) {
+  try {
+    const ssh = await getConnection(server.host, server.sshUser);
+
+    // SE logs connect/disconnect lines through the wine-wrapped dedicated server.
+    // Typical patterns emitted by SpaceEngineersDedicated:
+    //   "User <name> joined"          / "User <name> connected"
+    //   "User <name> left"            / "User <name> disconnected"
+    //   "Player '<name>' connected"   / "Player '<name>' disconnected"
+    const result = await ssh.execCommand(
+      `docker logs --tail 2000 ${server.containerName} 2>&1 | ` +
+      `grep -iE "user .* (joined|connected|left|disconnected)|player '.*' (connected|disconnected)" | tail -200`
+    );
+
+    const players = new Map();
+    const lines = result.stdout.split('\n').filter(l => l.trim());
+
+    for (const line of lines) {
+      let m;
+      if ((m = line.match(/Player '([^']+)' connected/i))) { players.set(m[1], true); continue; }
+      if ((m = line.match(/Player '([^']+)' disconnected/i))) { players.delete(m[1]); continue; }
+      if ((m = line.match(/User\s+(.+?)\s+(?:joined|connected)/i))) { players.set(m[1].trim(), true); continue; }
+      if ((m = line.match(/User\s+(.+?)\s+(?:left|disconnected)/i))) { players.delete(m[1].trim()); continue; }
+    }
+
+    const playerList = Array.from(players.keys());
+    return { online: playerList.length, players: playerList };
+  } catch (err) {
+    console.error(`[SpaceEngineers] 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";