Add ROC curve plot to credit risk Gradio app

Clarify metric descriptions and interpretation guidance

Enhance metric section with formulas in Gradio app

Add automatic model rebuild fallback for incompatible artifacts

Set HF Space SDK version to Gradio 6.14.0

Modernize credit risk Gradio app and prepare house prices app support

Pin numpy and pyarrow for pandas compatibility in HF Space

Add Hugging Face Spaces configuration front matter

Fix credit risk app paths for standalone Space deployment

Restore full project refactor with scripts and clean tracked artifacts

Refactor portfolio projects structure and modernize DS workflows