feat(shared): reorder AppError constructor to (message, code, status), add singleton logger, retry and TTL cache utilities

services/backend/src/ws/broadcast.ts

@@ -12,7 +12,6 @@
 type BroadcastFn = (data: unknown) => void;
 type BroadcastRawFn = (type: string, data: unknown) => void;
 
-// Extend globalThis with broadcast function types
 declare global {
   // biome-ignore lint/suspicious/noAssignInExpressions: intentional global broadcast registry
   var __broadcastFns:

services/backend/src/ws/redis-bridge.ts

@@ -1,6 +1,7 @@
 import Redis from "ioredis";
 import { config } from "../shared/config/index.js";
-import { createChildLogger } from "../shared/logger/index.js";
+import { getCommandPublisher } from "../shared/redis/index.js";
+import { createChildLogger } from "@bete/shared/logger";
 import { broadcastRaw } from "./broadcast.js";
 
 const logger = createChildLogger("ws.redis-bridge");
@@ -27,9 +28,8 @@ const SUBSCRIPTIONS: ChannelMapping[] = [
 ];
 
 let subscriber: Redis | null = null;
-let publisher: Redis | null = null;
 
-function createRedisInstance(): Redis {
+function createSubscriber(): Redis {
   if (config.REDIS_URL) {
     return new Redis(config.REDIS_URL, { keyPrefix: "" });
   }
@@ -40,17 +40,6 @@ function createRedisInstance(): Redis {
   });
 }
 
-function createSubscriber(): Redis {
-  return createRedisInstance();
-}
-
-function getPublisher(): Redis {
-  if (!publisher) {
-    publisher = createRedisInstance();
-  }
-  return publisher;
-}
-
 /**
  * Publish a command to the Discord Gateway via Redis.
  * The DG's commandHandler listens on "backend:command" channel.
@@ -58,7 +47,7 @@ function getPublisher(): Redis {
 export async function publishCommand(
   payload: Record<string, unknown>,
 ): Promise<void> {
-  const pub = getPublisher();
+  const pub = getCommandPublisher();
   const envelope = {
     type: "command",
     data: payload,

services/backend/src/ws/server.ts

@@ -1,6 +1,6 @@
 import type { Server } from "node:http";
 import { WebSocket, WebSocketServer } from "ws";
-import { createChildLogger } from "../shared/logger/index.js";
+import { createChildLogger } from "@bete/shared/logger";
 
 const logger = createChildLogger("ws.server");
 
@@ -10,7 +10,6 @@ interface BroadcastEvent {
   timestamp: string;
 }
 
-// Extend globalThis with broadcast function types
 declare global {
   var __broadcastFns:
     | {