diff --git a/tests/e2e.mjs b/tests/e2e.mjs
index e3aa105..73ef654 100644
--- a/tests/e2e.mjs
+++ b/tests/e2e.mjs
@@ -7,7 +7,7 @@
 import { chromium } from 'playwright';
 import { mkdirSync } from 'node:fs';
 
-const BASE = 'http://127.0.0.1:18743';
+const BASE = process.env.E2E_BASE ?? 'http://127.0.0.1:18743'; // 5f：本地 dist 口可覆写（staging=origin/main 纪律下验未推代码）
 const SHOTS = '/tmp/e2e-shots';
 mkdirSync(SHOTS, { recursive: true });