Каркас проекта: ТЗ, nginx+gameserver(uWebSockets) в Docker, /ws echo

Frontend — чистый HTML/CSS/JS без сборки (резюме, проекты, игра-заглушки).
Gameserver — C++ на uWebSockets (CMake FetchContent), протокол hello/lobby.list_rooms/error проверен end-to-end.

frontend/js/game/network.js

@@ -0,0 +1,38 @@
+import { ClientMessage, ServerMessage } from './protocol.js';
+
+export class Network {
+  constructor() {
+    const proto = location.protocol === 'https:' ? 'wss' : 'ws';
+    this.socket = new WebSocket(`${proto}://${location.host}/ws`);
+    this.handlers = new Map();
+
+    this.socket.addEventListener('open', () => this._emit('_open'));
+    this.socket.addEventListener('close', () => this._emit('_close'));
+    this.socket.addEventListener('message', (event) => {
+      const msg = JSON.parse(event.data);
+      this._emit(msg.type, msg.payload);
+    });
+  }
+
+  on(type, handler) {
+    this.handlers.set(type, handler);
+  }
+
+  _emit(type, payload) {
+    this.handlers.get(type)?.(payload);
+  }
+
+  send(type, payload = {}) {
+    this.socket.send(JSON.stringify({ type, payload }));
+  }
+
+  hello(nickname) {
+    this.send(ClientMessage.HELLO, { nickname });
+  }
+
+  listRooms() {
+    this.send(ClientMessage.LOBBY_LIST_ROOMS);
+  }
+}
+
+export { ServerMessage };