chore: add processed data, outputs, and proposal

- Add processed/ ML features and GCN model inputs
- Add Outputs/ GIS analysis, deploy configs, lit review
- Add proposal document for 湖北省卫生健康科技项目
- Enable full data portability for cross-machine development

Outputs/deploy-backend/start.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$0")"
+source venv/bin/activate
+
+echo "=== CBPOA Backend ==="
+echo "API docs: http://localhost:8000/docs"
+
+exec python3 -m uvicorn main:app --host 0.0.0.0 --port 8000 --workers 2