Add uv package manager support and improve project structure

[shaunporwal]

PR: Add uv package-manager support and modernize project structure

• Introduce Astral’s uv package manager

  • Added uv.lock for fully reproducible installs
  • Updated README with uv run examples alongside existing python run.py usage

• Switch to PEP 621 (pyproject.toml) packaging

  • Declares project metadata, Python ≥ 3.10, and core dependencies (bs4, openai, pandas, requests)
  • Removes the need for ad-hoc requirements files in future commits

• Add .gitignore for common Python cruft (.python-version, __pycache__/, *.csv)

• General clean-up

  • No code logic changed—safe, packaging-only update

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Lines removed: 0