Fix urlopen timeout arg + unwrap ExceptionGroup in error display

Fix cancel-scope error: run the async agent on a dedicated worker thread

Stream Gemini reply tokens to the answer panel

Agentic loop: Gemini Pro iterates the 4 CanLex MCP tools

Expand the intro: name the source types and corpus contents

Fix Gradio 6 launch() crash: drop show_api, pin versions

Add CanLex Path B web app: Gradio thin client