Fix: use 0.0.0.0 for HF Spaces deployment

Migrate frontend to Gradio 6: fix audio upload, clean UI, update README

Fix: move all st calls inside main() to prevent SessionInfo error

Use st.image() for logos instead of HTML img tags

Fix: use GitHub raw URLs for logos, remove embedded base64

changed font type

Embed logos as base64 in app.py - no binary files needed

Fix logo paths, add Playfair Display font for Kasuku title

Rebrand to Kasuku, add Sunbird logo to header and footer

Add HF Space README with metadata

Add sunbird-ai-app