Deploy Gradio app to HF Spaces

Add CI, typed ORM models, and packaging cleanup

Refactor dashboard to native Streamlit UI

Restructure to api/src and add Streamlit UI

Restructure project layout, modernize stack, and clean up deprecated code

Phase 6: Final Cleanup and Python-First Migration Complete

Refactor project structure

Expand architecture documentation

Remove CI/CD references from docs

feat: Phase 8 - final evaluation and portfolio polish