frontend: audit & migrate key Streamlit views to React pages (archive legacy/streamlit) #136
Description
Goal
Port important interactive dashboards that exist in legacy/streamlit into the cauweb React/TS frontend (or archive safely if deprecated). README references Streamlit in legacy/ folder. :contentReference[oaicite:1]{index=1}
Tasks
- Inventory Streamlit pages & features in
legacy/streamlit/(list components: charts, controls, upload flows). - For each feature, map to a React page or mark for deprecation (decide: migrate vs archive).
- Implement React equivalents using the existing cauweb design system (charts, controls, export).
- Add data endpoints (REST/WS) where Streamlit used local Python functions; document the API contract.
- Add a migration README: which features moved, which are archived, and how to run old Streamlit (if needed).
Acceptance criteria
- Inventory doc exists and all high-value Streamlit features are either migrated to React pages or clearly archived.
- No user-facing feature loss without an explicit deprecation note in README.