This release enhances system observability and performance for critical business workflows. Key improvements include new metrics for monitoring LDAP health, detailed tracing for IAM operations, and optimized site replication, enabling administrators to proactively manage system health and reduce operational latency.

### Improvements
*   Introduced a new health metric (`minio_cluster_iam_ldap_idp_health`) to monitor LDAP Identity Provider connectivity, enabling proactive alerting and faster troubleshooting of authentication issues. (#1195)
*   Added detailed OpenTelemetry tracing for all IAM storage operations, providing deeper performance insights into user, group, and policy management. (#1253)
*   Optimized IAM site replication by batching user, group, and policy data, significantly reducing latency for initial synchronization in multi-site deployments. (#1269)
*   Strengthened object lifecycle tiering by automatically reverting interrupted transitions, ensuring data integrity and preventing partial data states during network or disk failures. (#1268)

### Bug Fixes
*   Resolved a performance degradation issue by eliminating duplicate background healing tasks, reducing latency during I/O-intensive locking operations. (#1266)
*   Fixed a cluster startup failure when upgrading from legacy deployments (c. 2021) by adding support for an older checksum format, ensuring a seamless upgrade path. (#1280)