README: remove Security Audit table

README: comprehensive docs with FHE architecture, security audit, full project docs

Fix: restore HF Space YAML metadata in README, full docs in GITHUB_README.md

Update README: TRUE FHE architecture, deployment docs, security audit, full project docs

Fix HF Spaces deployment: enhanced 5-tab FHE app with best_model.pth via LFS

Add Render deployment configuration

Deploy to Hugging Face - exclude test dataset

Update README.md

Add Hugging Face Space configuration

Configure Hugging Face deployment

Initial commit: SecureLens privacy-preserving medical AI