feat: fix Bybit Unified Account support and enhance Docker logging for ping_pong_bot

- Added accountType='UNIFIED' to wallet balance requests
- Updated balance retrieval to support totalWalletBalance for UTA
- Replaced rich.Live with standard logging for better Docker compatibility
- Added PYTHONUNBUFFERED=1 to ensure real-time logs in containers
- Updated docker-compose to point to NAS database (20.20.20.20)
- Created GEMINI.md with comprehensive project context

docker/Dockerfile.bot

@@ -13,6 +13,9 @@ COPY src/ ./src/
 COPY config/ ./config/
 COPY .env .
 
+# Create logs directory
+RUN mkdir -p /app/logs
+
 # Set Python path
 ENV PYTHONPATH=/app