Add Champion brain pull from HuggingFace Hub with status display

Fix blueprint links: use expandable sections instead of broken file links

Fix brain architecture: Champion-Dreamer is a unified brain

Add git to Dockerfile for HF dev mode

Add Dockerfile for Streamlit on port 7860

Add HuggingFace Space config + Streamlit app

Add blueprints archive: ARACHNE-001, MARIONETTE-001, AIRFOIL-CORDAGE-SYSTEM, PERSPECTIVE