fix: improve Redis handling for HF Spaces

- Add Redis installation check
- Add local Redis fallback for HF Spaces
- Improve Redis connection handling
- Add data directory for Redis persistence
- Fix Redis connection timeout issues

Dockerfile

@@ -14,7 +14,7 @@ ENV NODE_OPTIONS="--max_old_space_size=2048" \
 # Install base dependencies
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-    tzdata git curl && \
+    tzdata git curl redis-server && \
     rm -f /etc/localtime && \
     ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
     echo $TZ > /etc/timezone