Deliver both EDAs from one toolkit

Submit the two notebooks (Restart & Run All passes), eda_utils.py with ≥ 10 reusable functions used by both, issue logs, feature reviews and a 1-page summary per project. Concepts: Submit two notebooks (Restart & Run All passes), eda_utils.py with ≥ 10 reusable functions used by both, issue logs, feature reviews, the German Credit training-ready export + pipeline, the persona/risk-tier section, and a 1-page summary per project. Project A: German Credit EDA → training-ready dataset + persona/risk-tier segmentation. Project B: Electricity Demand EDA + benchmark comparison with the TSO forecast.