Revert "feat: migrate frontend to Astro SSG with design system"

This reverts commit 8ad888da28.

services/frontend/src/shared/ws/socket.ts

@@ -6,9 +6,9 @@ import type {
   VoiceRecordingUploadData,
 } from "@bete/shared";
 import { useCallback, useEffect, useRef, useState } from "react";
-import { getSessionToken } from "../api/client.js";
+import type { MediaState } from "../../entities/media/types.js";
 import { createLogger } from "../lib/logger.js";
-import type { MediaState } from "../types/media.js";
+import { getSessionToken } from "../api/client.js";
 import type { ActiveSpeakerData } from "./events.js";
 
 const logger = createLogger("socket");
@@ -391,43 +391,3 @@ export function useDashboardSocket(handlers: WsHandlers) {
 
   return { status, send, socketRef: { current: _wsInstance } };
 }
-
-/**
- * Singleton manager for the WebSocket connection.
- * Provides imperative connect/disconnect/send access alongside useDashboardSocket.
- */
-export class SocketManager {
-  private static _instance: SocketManager;
-
-  private constructor() {}
-
-  static getInstance(): SocketManager {
-    if (!SocketManager._instance) {
-      SocketManager._instance = new SocketManager();
-    }
-    return SocketManager._instance;
-  }
-
-  /** Ensure the WebSocket is connected (reconnects if closed). */
-  connect(): void {
-    _closed = false;
-    ensureConnected();
-  }
-
-  /** Close the WebSocket and stop reconnection. */
-  disconnect(): void {
-    _closed = true;
-    if (_reconnectTimer) clearTimeout(_reconnectTimer);
-    if (_wsInstance) {
-      _wsInstance.close();
-      _wsInstance = null;
-    }
-  }
-
-  /** Send data through the WebSocket (no-op if not connected). */
-  send(data: ArrayBuffer | string): void {
-    if (_wsInstance?.readyState === WebSocket.OPEN) {
-      _wsInstance.send(data);
-    }
-  }
-}