Summary

• Make Redis lorry role detection confirm Sentinel-reported primary against local Redis INFO replication.
• Use Sentinel majority when the Sentinel pod list is available, instead of trusting the first reachable Sentinel.
• Avoid reporting a Redis pod as primary when the local Redis process is still running as a replica.
• Add parser/unit coverage for Redis replication role and Sentinel master parsing helpers.

Test plan

• go test ./pkg/lorry/engines/redis ./pkg/lorry/operations/replica