portfolio/ ├── main.py # Application entry point ├── requirements.txt # Python dependencies ├── Dockerfile # Docker image definition ├── docker-compose.yml # Docker Compose configuration ├── ...
ebilling/ ├── app.py # Flask backend (all routes) ├── database.py # DB layer: init, seed, helpers ├── analytics.py # DA engine: all KPI queries (Pandas + SQL) ├── schema.sql # Full relational schema + ...