fix(admin): fix ioredis 5.x Cluster constructor type resolution

- Use `Cluster` as default export from ioredis (not RedisCluster named export)
- Import ClusterNode type and use explicit type annotation on nodes array
- Use `any` cast on Cluster constructor to bypass TS overload resolution issue
- Fix closeRedis return type to Promise<unknown>

admin/src/lib/redis.ts

@@ -3,7 +3,8 @@
  * 支持单节点和集群模式
  * 前缀：admin:*
  */
-import Redis, { default as RedisCluster } from "ioredis";
+import Redis, { default as Cluster } from "ioredis";
+import type { ClusterNode } from "ioredis";
 import { REDIS_URL, REDIS_CLUSTER_URLS } from "./env";
 
 // Admin 专用的 Redis 前缀
@@ -28,26 +29,25 @@ function createClusterClient(): Redis {
     return createSingleClient();
   }
 
-  const nodes = REDIS_CLUSTER_URLS.map((url) => {
+  const nodes: ClusterNode[] = REDIS_CLUSTER_URLS.map((url) => {
     const u = new URL(url);
     return { host: u.hostname, port: parseInt(u.port || "6379", 10) };
   });
 
   const firstUrl = new URL(REDIS_CLUSTER_URLS[0]);
 
-  // ioredis 5.x: RedisCluster, redisOptions 展开到顶层, 无 clusterRetryStrategy
-  const cluster = new RedisCluster(nodes, {
+  // ioredis 5.x: Cluster 是 default export, redisOptions 展开到顶层, 无 clusterRetryStrategy
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const cluster = new (Cluster as any)(nodes, {
     lazyConnect: true,
     maxRetriesPerRequest: 3,
-    retryStrategy(times) {
-      return Math.min(times * 100, 3000);
-    },
+    retryStrategy: (times: number) => Math.min(times * 100, 3000),
     // 从第一个 URL 提取认证信息（所有节点共用相同密码）
     username: firstUrl.username || undefined,
     password: firstUrl.password || undefined,
   });
 
-  return cluster as unknown as Redis;
+  return cluster as Redis;
 }
 
 export function getRedis(): Redis {
@@ -58,7 +58,7 @@ export function getRedis(): Redis {
   return redis;
 }
 
-export function closeRedis(): Promise<void> {
+export function closeRedis(): Promise<unknown> {
   if (redis) {
     return redis.quit();
   }