Add error handling with clear error messages for each pipeline stage

Add Chair/moderator who introduces the topic and speakers

Complete redesign: Small Talk style side-by-side robot panels with captions, embedded audio auto-play via iframe srcdoc

Fix robot sync: use polling watcher + hidden textbox for timeline data (scripts dont re-execute in gr.HTML updates)

Fix autoplay: use inline HTML (no iframe) + sync to Gradio autoplay audio element

Fix autoplay: add click-to-play overlay fallback and allow-autoplay on iframe

Auto-play audio in robot viewer with synced transcript log

Add animated robot avatars synced to speaker turns

Initial commit: GeoTalk AI Geoscience Debate Podcast