Responsive Viewport Testing

POST /tabs/:tabId/viewport — set any viewport size on a live tab for responsive testing. Pass { width, height } and the page re-renders at that size. Useful for testing mobile breakpoints, tablet layouts, or unusual screen dimensions without creating a new session.

Tab Leak Fix

Two fixes for pages that survive normal cleanup:

• safePageClose force-kill: If page.close() hangs (e.g., stuck unload handler), the page is force-closed after timeout instead of leaked. Previously a single stuck page would starve Firefox of DOM threads.
• Orphan page reaper: Background interval detects Playwright pages that escaped tabGroups tracking and force-closes them.

Session Lifecycle Robustness

• Navigation timeout → session destroy: A poisoned proxy (Cloudflare holding a connection for 30s) used to kill all subsequent navigations in that context. Now click/navigate/open_url timeouts destroy the session so the next request gets a fresh proxy.
• Drain locks before close: Queued tab operations get clean 410 Tab destroyed instead of cascading 500 Target page closed errors.
• Dead-context → 503: Cascade errors return session_expired with retry semantics instead of generic 500.
• Transparent proxy retry: Navigation failures from proxy blocks or timeouts automatically retry once with a fresh session.
• goBack timeout 10s → 20s: Back navigation uses browser cache; 10s was too short for complex SPA re-renders.

Install Hardening

• Ship compiled plugin.js so install works even when TypeScript compilation is skipped — by @Yeraze (#2140)
• Cross-platform postinstall script with cache validation — by @gustavosmendes (#2149)
• Graceful handling of PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 (warns + skips warm-up instead of crash loop) — by @gustavosmendes (#2149)

Fixes & Improvements

• Native memory pressure: restart browser when idle if heap exceeds threshold
• Memory leak false-positive reduction (3 safeguards for watchdog stall detection)
• Crash reporter renamed to telemetry, credentials moved to Cloudflare Worker relay
• OpenClaw plugin metadata + ClawHub publish workflow

Thank You

• @cunninghambe — co-authored viewport endpoint and tab leak fix (#2470, #2471)
• @gustavosmendes — install hardening and PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD support (#2149)
• @Yeraze — compiled plugin.js fix (#2140)
• @Xy2002 — Railway deployment configuration (#651)