- Extract health check handlers to new health.rs module (health, liveness, readiness, metrics endpoints)
- Extract IP conversion utilities to new ip_utils.rs module (u32_to_ipv4_string, ipv4_string_to_u32)
- Extract Redis synchronization logic to new redis_sync.rs module (RedisSyncer with sync_packet_stats, sync_credit_info, sync_credits_from_redis, sync_blocked_from_redis, sync_batch_entry methods)
- Refactor EbpfManager
