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Update app_hf.py

Update app_hf.py

Update app_hf.py

Update app_hf.py

Update app_hf.py

Update app_hf.py

Update app_hf.py

Update app_hf.py

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again updated app_hf.py

Updated app_hf.py

Refactor: Use Gradio native tabs for functional tab switching

Fix: Improve text visibility with CSS override

Fix: Add Gradio wrapper for HF Spaces compatibility

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Create requirements.txt

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