style: replace interface{} with any per golangci-lint gofmt rewrite rules

backend/internal/repository/concurrency_cache.go

@@ -453,7 +453,7 @@ func (c *concurrencyCache) removeActiveIndexMembers(ctx context.Context, indexKe
 	if len(members) == 0 {
 		return
 	}
-	args := make([]interface{}, 0, len(members))
+	args := make([]any, 0, len(members))
 	for _, member := range members {
 		args = append(args, member)
 	}

backend/internal/repository/user_msg_queue_cache.go

@@ -217,8 +217,8 @@ func (c *userMsgQueueCache) ReconcileExpiredLockCandidates(ctx context.Context,
 }
 
 // redisScriptInt64At 兼容 go-redis 对 Lua 数组元素的不同返回类型。
-func redisScriptInt64At(result interface{}, index int) (int64, error) {
-	values, ok := result.([]interface{})
+func redisScriptInt64At(result any, index int) (int64, error) {
+	values, ok := result.([]any)
 	if !ok {
 		return 0, fmt.Errorf("expected redis script array, got %T", result)
 	}