feat: Add LuckPerms group assignment to tier sync — sets group + meta on checkout

services/arbiter-3.0/src/services/luckpermsSync.js

@@ -25,6 +25,20 @@ const TIER_META = {
   10: { maxclaims: 225, maxchunkloaders: 81 }, // Sovereign
 };
 
+// Tier level -> LuckPerms group name
+const TIER_GROUP = {
+  1:  'awakened',
+  2:  'elemental',
+  3:  'elemental',
+  4:  'knight',
+  5:  'knight',
+  6:  'master',
+  7:  'master',
+  8:  'legend',
+  9:  'legend',
+  10: 'sovereign',
+};
+
 /**
  * Get all online Minecraft server identifiers from server_config
  */
@@ -83,11 +97,12 @@ async function syncLuckPermsMeta(discordId, tierLevel) {
     return { success: false, reason: 'no_online_servers' };
   }
 
-  // Send meta commands to all online servers
+  // Send meta + group commands to all online servers
   const results = await Promise.allSettled(
     onlineServers.flatMap(serverId => [
       sendCommand(serverId, `lp user ${username} meta set maxclaims ${meta.maxclaims}`),
-      sendCommand(serverId, `lp user ${username} meta set maxchunkloaders ${meta.maxchunkloaders}`)
+      sendCommand(serverId, `lp user ${username} meta set maxchunkloaders ${meta.maxchunkloaders}`),
+      sendCommand(serverId, `lp user ${username} group set ${TIER_GROUP[tierLevel]}`)
     ])
   );