Per-question reviews; render questionnaire in app layout

Reviewer sees review history across all versions

Admin shows only the latest version per trial

Save every submit as a new version; let users pick a version to load

Make submissions editable; load by trial_id + username

Rename to 'Trial Design Benchmark'

Store each review as a separate file under reviews/<submission>/

Support multiple reviews per submission with full history

Add Streamlit/HF-Space version; move Next.js code into legacy/

Switch storage to Hugging Face Dataset; add /admin review console

Initial commit: clinical trial intake form