diff --git a/docs/WEB_FEATURE_SMOKE_PLAN.md b/docs/WEB_FEATURE_SMOKE_PLAN.md
index 64b019d6c..880fc1e0c 100644
--- a/docs/WEB_FEATURE_SMOKE_PLAN.md
+++ b/docs/WEB_FEATURE_SMOKE_PLAN.md
@@ -23,8 +23,9 @@
 
 4. **失败处理**
    - 第一轮全部按计划执行一次；失败项记录在 `tests/golden/WBV2/feature-smoke-report.json`。
-   - 失败项标记为 `FAILED_FOCUSED_FIX_REQUIRED`，不伪造通过，也不在同一轮重复执行。
-   - 修复必须建立新的聚焦任务和新的烟测批次；已通过功能不重跑。
+- 失败项标记为 `FAILED_FOCUSED_FIX_REQUIRED`，不伪造通过，也不在同一轮重复执行。
+- 修复必须建立新的聚焦任务和新的烟测批次；已通过功能不重跑。
+- 同一 `planId` 已存在尝试记录时，运行器会拒绝再次执行；必须更换批次 ID 或使用独立的聚焦修复入口。
 
 ## 执行命令
 
diff --git a/tests/golden/WBV2/feature-smoke-manifest.json b/tests/golden/WBV2/feature-smoke-manifest.json
index f326ac9bb..1c47968fe 100644
--- a/tests/golden/WBV2/feature-smoke-manifest.json
+++ b/tests/golden/WBV2/feature-smoke-manifest.json
@@ -16,7 +16,7 @@
   },
   "planDocument": {
     "path": "docs/WEB_FEATURE_SMOKE_PLAN.md",
-    "sha256": "d3f6391efa860c7f9be2bbd5ff4ff9dad8477b1e92cd7c9d618743a0cfbe92ec"
+    "sha256": "fd3f4966351051b8feb518c898a9f9cfdf9bcfbbca17194ca41098256cabc65b"
   },
   "summary": {
     "totalFeatures": 34,
diff --git a/tools/web/run-wbv2-feature-smoke-plan.mjs b/tools/web/run-wbv2-feature-smoke-plan.mjs
index f731f5a5a..736e06fa5 100644
--- a/tools/web/run-wbv2-feature-smoke-plan.mjs
+++ b/tools/web/run-wbv2-feature-smoke-plan.mjs
@@ -42,6 +42,14 @@ if (!execute) {
   process.exit(0);
 }
 
+if (fs.existsSync(reportPath)) {
+  const previous = JSON.parse(fs.readFileSync(reportPath, "utf8"));
+  if (previous.planId === plan.planId && Array.isArray(previous.cases) && previous.cases.some((item) => Number(item.attempts ?? 0) > 0)) {
+    process.stderr.write(`feature-smoke-once-only: plan ${plan.planId} already has recorded attempts; create a new focused-fix batch instead of rerunning\n`);
+    process.exit(2);
+  }
+}
+
 const startedAt = new Date().toISOString();
 const smokeReport = {
   schemaVersion: 1,