Included pdf download

v0.17.0 - 2025-11-19

Added

Created initial PDF export pipeline with download/view/print controls so stakeholders can grab WIP reports without leaving the app; appended the Assumptions & Methodology appendix for shared context.
Introduced in-app Terms & Conditions / Privacy Policy links and versioned footer, plus lightweight legal docs under docs/.
Added changelog tracking to capture release content before tagging.
Verification

pytest
black / ruff pre-commit hooks
Manual Streamlit run, PDF download/view/print smoke test