Add localhost-only internal Discord update route

gsm-backend/routes/servers.js

@@ -900,4 +900,35 @@ router.post("/discord/send-update", authenticateToken, requireRole("superadmin")
   }
 });
 
+// Internal route for sending updates (localhost only, no auth)
+router.post("/discord/internal-update", async (req, res) => {
+  const clientIp = req.ip || req.connection.remoteAddress;
+  if (clientIp !== '127.0.0.1' && clientIp !== '::1' && clientIp !== '::ffff:127.0.0.1') {
+    return res.status(403).json({ error: "Forbidden - localhost only" });
+  }
+
+  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: '🚂', hytale: '🏰'
+    };
+
+    const embed = new EmbedBuilder()
+      .setTitle((serverIcons[serverType] || '📢') + ' ' + title)
+      .setDescription(description)
+      .setColor(color || 0x5865F2)
+      .setTimestamp();
+
+    await sendUpdateToAllGuilds(embed);
+    res.json({ message: "Update sent" });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
 export default router;