Add .env.example with Supabase configuration

.env.example

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+# Supabase Configuration
+# Copy this file to .env and fill in your actual values
+# For Hugging Face Spaces, add these as Secrets in the Space settings
+
+SUPABASE_URL=http://supabasekong-ggosk0kkwsw8swcwsooo8o48.16.170.15.157.sslip.io
+SUPABASE_KEY=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJzdXBhYmFzZSIsImlhdCI6MTc2MzYzNDg0MCwiZXhwIjo0OTE5MzA4NDQwLCJyb2xlIjoiYW5vbiJ9.73mWaXstDrk1wQGYaWMSi2-GWSb4_MvOXMwtM96sjCI
+
+# Admin Credentials (Optional - defaults are set in app.py)
+# ADMIN_USERNAME=admin
+# ADMIN_PASSWORD=your_secure_password

Dockerfile

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+FROM python:3.10-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    libsndfile1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements and install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application files
+COPY app.py .
+COPY supabase_schema.sql .
+
+# Expose port
+EXPOSE 7860
+
+# Set environment variables
+ENV GRADIO_SERVER_NAME="0.0.0.0"
+ENV GRADIO_SERVER_PORT=7860
+
+# Run the application
+CMD ["python", "app.py"]