周期性 -race 重跑抓到真实 bug：wsClientCore.enqueue close 后 select 随机选择致契约违反；确定性先查 done 修复+测试循环加固+gofmt 存量漂移清理

Result: {"status":"keep","total_issues":8,"eslint_errors":0,"eslint_problems":0,"eslint_warnings":0,"golint_canonicalheader":0,"golint_errname":0,"golint_errorlint":1,"golint_exhaustive":0,"golint_forcetypeassert":0,"golint_gosec":0,"golint_intrange":0,"golint_modernize":3,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":0,"golint_recvcheck":1,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_total":0,"golint_test_usetesting":0,"golint_total":8,"golint_usestdlibvars":0,"golint_vetx_total":0,"golint_wastedassign":0,"measure_s":95,"tsc_errors":0,"vitest_failed":0,"vitest_total":126}

internal/apps/openflare/websocket/flared_hub.go

@@ -23,7 +23,6 @@ type flaredClient struct {
 	wsClientCore
 }
 
-
 type flaredHub struct {
 	mu      sync.RWMutex
 	clients map[string]*flaredClient