fix: add repo-owned playwright probe guard (#850)

Co-authored-by: Codex Agent <codex@hwlab.local>

package.json

@@ -40,6 +40,8 @@
     "web:layout:build": "node scripts/dev-cloud-workbench-layout-smoke.mjs --build --report /tmp/hwlab-dev-gate/dev-cloud-workbench-layout-build.json",
     "web:layout:live": "node scripts/dev-cloud-workbench-layout-smoke.mjs --live --url http://74.48.78.17:16666/ --report /tmp/hwlab-dev-gate/dev-cloud-workbench-layout-live.json",
     "web:browser:doctor": "node scripts/web-browser-doctor.mjs",
+    "web:browser:guard": "node scripts/playwright-launch-guard.mjs",
+    "web:dom-probe": "node scripts/web-live-dom-probe.mjs",
     "gateway:demo:smoke": "node scripts/run-bun.mjs scripts/gateway-outbound-demo-smoke.mjs",
     "gateway:demo:edge-smoke": "node scripts/run-bun.mjs scripts/gateway-outbound-demo-smoke.mjs --edge"
   },