UPLOAD ONLY app.py

Hugging Face Space: CodeAntidote/Kids-Rhyme-Studio

1. Files -> app.py -> Delete current app.py
2. Contribute -> Upload files
3. Upload the app.py in this folder
4. Commit message: Fix Gradio 6 dark theme and star background
5. Wait for Space rebuild to finish
6. Hard refresh: Cmd+Shift+R (Mac) or Ctrl+Shift+R (Windows)

Do not replace audio_engine.py, rhyme_engine.py, themes.py, requirements.txt, or README.md.