Add Discord update API route

Adds POST /api/servers/discord/send-update endpoint that allows
superadmins to send announcements to all Discord guild update channels.

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

gsm-backend/routes/servers.js

@@ -2,6 +2,7 @@ import { Router } from 'express';
 import { readFileSync } from 'fs';
 import { dirname, join } from 'path';
 import { fileURLToPath } from 'url';
+import { EmbedBuilder } from 'discord.js';
 import { authenticateToken, optionalAuth, requireRole, rejectGuest } from '../middleware/auth.js';
 import { getServerStatus, startServer, stopServer, restartServer, getConsoleLog, getProcessUptime, listFactorioSaves, createFactorioWorld, deleteFactorioSave, getFactorioCurrentSave, isHostFailed, listZomboidConfigs, readZomboidConfig, writeZomboidConfig, listPalworldConfigs, readPalworldConfig, writePalworldConfig, readTerrariaConfig, writeTerrariaConfig, readOpenTTDConfig, writeOpenTTDConfig } from '../services/ssh.js';
 import { sendRconCommand, getPlayers, getPlayerList } from '../services/rcon.js';
@@ -9,6 +10,7 @@ import { getServerMetricsHistory, getCurrentMetrics } from '../services/promethe
 import { initWhitelistCache, getCachedWhitelist, setCachedWhitelist, initFactorioTemplates, getFactorioTemplates, createFactorioTemplate, deleteFactorioTemplate, initFactorioWorldSettings, getFactorioWorldSettings, saveFactorioWorldSettings, deleteFactorioWorldSettings, initAutoShutdownSettings, getAutoShutdownSettings, setAutoShutdownSettings, initActivityLog, logActivity, getActivityLog, initServerDisplaySettings, getServerDisplaySettings, getAllServerDisplaySettings, setServerDisplaySettings, initGuildSettings } from '../db/init.js';
 import { getEmptySince } from '../services/autoshutdown.js';
 import { getDefaultMapGenSettings, getPresetNames, getPreset } from '../services/factorio.js';
+import { sendUpdateToAllGuilds } from '../services/discordBot.js';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -825,4 +827,36 @@ router.put("/:id/display-settings", authenticateToken, requireRole("superadmin")
     res.status(500).json({ error: err.message });
   }
 });
+
+// ============ DISCORD UPDATE ROUTES ============
+
+// Send update to all Discord guilds (superadmin only)
+router.post("/discord/send-update", authenticateToken, requireRole("superadmin"), async (req, res) => {
+  const { title, description, color, serverType } = req.body;
+
+  if (!title || !description) {
+    return res.status(400).json({ error: "Title and description required" });
+  }
+
+  try {
+    const serverIcons = {
+      minecraft: '⛏️', factorio: '⚙️', zomboid: '🧟', vrising: '🧛',
+      palworld: '🦎', terraria: '⚔️', openttd: '🚂'
+    };
+
+    const embed = new EmbedBuilder()
+      .setTitle((serverIcons[serverType] || '📢') + ' ' + title)
+      .setDescription(description)
+      .setColor(color || 0x5865F2)
+      .setTimestamp();
+
+    await sendUpdateToAllGuilds(embed);
+    logActivity(req.user.id, req.user.username, 'discord_update', serverType || 'general', title, req.user.discordId, req.user.avatar);
+    res.json({ message: "Update sent to all Discord guilds" });
+  } catch (err) {
+    console.error('[Discord] Error sending update:', err);
+    res.status(500).json({ error: err.message });
+  }
+});
+
 export default router;