基准扩展 exhaustive（文档化）+ 12→0：枚举 switch 补显式 case（全部与现有 default 行为等价，fail-explicit 防未来枚举静默落入 default）；source_tasks.go 为控制复杂度合并两个等价校验条件。

Result: {"status":"keep","total_issues":8,"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_usestdlibvars":0,"golint_wastedassign":0,"golint_total":8,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_usetesting":0,"golint_test_total":0,"eslint_problems":0,"eslint_errors":0,"eslint_warnings":0,"tsc_errors":0,"measure_s":36}

internal/apps/agent/sync/sync_helpers.go

@@ -220,6 +220,9 @@ func updateSnapshotFromApplyOutcome(mode string, snapshot *state.Snapshot, confi
 		snapshot.OpenrestyStatus = protocol.OpenrestyStatusHealthy
 		snapshot.OpenrestyMessage = result.message
 		result.reportResult = ApplyResultWarning
+	case nginx.ApplyStatusFatal:
+		// 致命错误与普通失败同走失败路径：标记阻塞并上报 Unhealthy。
+		fallthrough
 	default:
 		if result.message == "" {
 			result.message = "openresty apply failed"