Function warm_cache 

pub async fn warm_cache(
    memory: &Arc<SelfLearningMemory>,
    config: &CacheWarmingConfig,
) -> Result<()>

Warm the cache by pre-loading recent episodes and common query patterns

This method performs cache warming to improve initial query performance by:

1. Pre-loading recent episodes into cache
2. Pre-computing common query patterns
3. Warming up pattern extraction and retrieval systems