Bug Description

browser stop (action=stop) does not disconnect the Playwright CDP connection for attachOnly profiles. The Playwright connectOverCDP session remains active until the gateway is restarted.

Impact

• prefers-color-scheme override persists — Playwright attach resets emulated media features (e.g., dark mode → light mode). Since the connection is never released, refreshing the page does not restore the system theme.
• Other CDP side effects persist — viewport overrides, navigator.webdriver, etc. remain until gateway restart.
• No clean detach path — users must restart the entire gateway just to release a browser profile connection.

Root Cause

In createProfileAvailability() (routes-GmL6Gsmc.js), the stopRunningBrowser function checks profileState.running — which is null for attachOnly profiles (since no browser process was launched). When !profileState.running, it returns { stopped: false } immediately without calling closePlaywrightBrowserConnectionForProfile().

// Current code (broken for attachOnly)
const stopRunningBrowser = async () => {
    await reconcileProfileRuntime();
    if (capabilities.usesChromeMcp) return { stopped: await closeChromeMcpSession(profile.name) };
    const profileState = getProfileState();
    if (!profileState.running) return { stopped: false }; // ← early return, no cleanup
    await stopOpenClawChrome(profileState.running);
    setProfileRunning(null);
    return { stopped: true };
};

Compare with resetProfile() in createProfileResetOps(), which does call closePlaywrightBrowserConnectionForProfile() regardless of profileState.running — and correctly releases the connection.

Proposed Fix

const stopRunningBrowser = async () => {
    await reconcileProfileRuntime();
    if (capabilities.usesChromeMcp) return { stopped: await closeChromeMcpSession(profile.name) };
    const profileState = getProfileState();
    if (!profileState.running) {
        await closePlaywrightBrowserConnectionForProfile(profile.cdpUrl);
        return { stopped: true };
    }
    await stopOpenClawChrome(profileState.running);
    setProfileRunning(null);
    return { stopped: true };
};

Steps to Reproduce

1. Configure a browser profile with attachOnly: true and cdpPort pointing to an externally launched browser (e.g., Arc with --remote-debugging-port=9222)
2. Run browser snapshot or browser navigate (this establishes the Playwright CDP connection)
3. Run browser stop — observe that status still shows running: true and Playwright emulation overrides persist
4. Refresh a page in the browser — prefers-color-scheme is still overridden (light instead of system dark)
5. Only gateway restart releases the connection

Environment

• OpenClaw 2026.3.31 (213a704)
• macOS (Apple Silicon)
• Arc browser with --remote-debugging-port=9222
• Profile config: browser.profiles.user = { cdpPort: 9222, attachOnly: true }

Verified Fix

Applied the patch locally to routes-GmL6Gsmc.js. After browser stop, refreshing the page correctly restores prefers-color-scheme to system value (dark mode).