Remove repo reports and add recurrence guard

docs/reference/cloud-workbench.md

@@ -184,7 +184,7 @@ npm run web:layout:live
 默认 `web:check` 失败时会把完整 JSON 报告写入
 `tmp/dev-cloud-workbench-layout-web-check.json`，终端断言只输出 compact
 blockers/failures：`viewport`、`selector`、`failureType`、summary 和 artifact
-路径。`reports/dev-gate/dev-cloud-workbench-layout*.json` 是显式 `web:layout*`
+路径。`/tmp/hwlab-dev-gate/dev-cloud-workbench-layout*.json` 是显式 `web:layout*`
 命令的报告路径；它们属于 #273 UI layout blocker 证据，不属于 M3 trusted green
 证据。