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/cbpoa-backend.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=CBPOA Backend API
+After=network.target
+
+[Service]
+Type=simple
+User=www-data
+WorkingDirectory=/opt/cbpoa/backend
+ExecStart=/opt/cbpoa/backend/venv/bin/python3 -m uvicorn main:app --host 0.0.0.0 --port 8000 --workers 2
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target