In-app browser (Browser pane) crashes entire app when a page loads a Cloudflare Turnstile/verification challenge

Description:
Opening a page in the built-in Browser pane that triggers a Cloudflare verification/challenge screen (Turnstile bot-check) causes an immediate hard crash of the whole Claude app, prompting a "Repair" dialog. This is reproducible every time the in-app browser hits a Cloudflare challenge page.

Site that triggered it: nexusmods.com (specifically a Nexus Mods login/download page protected by Cloudflare)

Steps to reproduce:

1. Ask Claude to open a webpage in the in-app Browser pane that is protected by Cloudflare (e.g. via the browser preview/navigate tool)
2. Navigate to a Nexus Mods URL (e.g. nexusmods.com login or a mod file-download page) where Cloudflare serves a verification/Turnstile challenge before the real page loads
3. App crashes instantly as the challenge renders; OS prompts to repair the app

Expected behavior:
The in-app browser should render the Cloudflare challenge like a normal embedded browser (or fail gracefully) instead of crashing the host app.

Environment:

• OS: Windows 11 Pro (10.0.26200)
• Platform: win32, PowerShell primary shell
• Triggered via: Browser pane / preview tools during an interactive session

Impact: Any workflow that needs the in-app browser to reach a Cloudflare-protected site (e.g. Nexus Mods login) is currently unusable — it crashes the app instead of showing the challenge.