```markdown
# app24 — EA_24_data Viewer

This is a small Streamlit app that loads an Excel file (EA_24_data.xlsx) and lets you view and download it as CSV.

Quick start
1. Create a virtual environment and install dependencies:
   pip install -r requirements.txt

2. Place your Excel file named `EA_24_data.xlsx` in the repository root, or run the app and use the built-in file uploader.

3. Run the app:
   streamlit run app24.py

Notes
- The app supports uploading an Excel file through the UI if `EA_24_data.xlsx` is not present.
- The app uses `openpyxl` to read .xlsx files.
- CI (GitHub Actions) runs flake8 and pytest on push/PR to main.
- The Dockerfile is configured to run the Streamlit app on port 8501.
```