INSTRUCTIONS TO RUN THE ARTIFACT:

1. Open a terminal / command prompt in this directory.

2. Install dependencies:
   pip install -r requirements.txt

3. Run the main POS system:
   py -m streamlit run app.py

4. Run the independent forensic audit:
   py verify_ledger.py

5. Run 5-Vector Adversarial Penetration Test Harness:
   py step4_tamper_simulation.py