Refine reboot notices and sounds for in-progress state

client/src/main.ts

@@ -883,7 +883,7 @@ function classifySystemMessageSound(message: string): keyof typeof SYSTEM_SOUND_
   if (normalized.includes(' is now known as ') || normalized.startsWith('you are now known as ')) {
     return 'notify';
   }
-  if (normalized.startsWith('server rebooting in ') || normalized === 'server reboot already scheduled.') {
+  if (normalized.startsWith('server rebooting in ')) {
     return 'notify';
   }
   return null;

client/src/network/messageHandlers.ts

@@ -231,6 +231,11 @@ export function createOnMessageHandler(deps: MessageHandlerDeps): (message: Inco
           deps.playSample(deps.ACTION_SOUND_URL, 1);
         } else if (message.system) {
           deps.pushChatMessage(message.message);
+          const normalized = message.message.trim().toLowerCase();
+          if (normalized === 'server reboot already in progress.') {
+            deps.audioUiBlip();
+            break;
+          }
           const sound = deps.classifySystemMessageSound(message.message);
           if (sound) {
             deps.playSample(deps.SYSTEM_SOUND_URLS[sound], 1);