fix: render the live browser panel from the tool's liveUrl
The bug
The Agent's browser panel rendered empty even while the agent was on a page. extractLiveUrl scraped the liveUrl from the model's markdown-bolded chat text and captured the trailing **, corrupting the wss host so the live view couldn't connect.
The fix
Read the canonical liveUrl from the open_cloud_browser tool output (structured data) instead of the prose. Origin-safe (only accepts https://live.browser-use.com). Verified the panel now renders the live cloud browser (Hacker News) next to the chat. The cubic sandbox on the iframe stays — it was never the cause.
Also
- Adds
public/banner.png(AmbientHacker-style social-preview card) and uses it at the top of the README.
Typecheck + next build pass.
🤖 Generated with Claude Code
Summary by cubic
Fixes the Agent browser panel by reading the live URL from the open_cloud_browser tool output, avoiding markdown corruption and restoring the live view. Validates the URL by parsing it (https + exact host live.browser-use.com, no substring matches); adds public/banner.png and updates the README banner.