- Implement list_pools with full pool configuration parsing
- Implement create_pool and delete_pool
- Implement set_pool_quota for capacity management
- Implement list_osds with up/in status and weight
- Implement set_osd_weight, osd_out, osd_in for OSD management
- Implement list_mds, get_mds_status, mds_failover
- Implement list_rbd, create_rbd, delete_rbd, clone_rbd, resize_rbd
- Implement create_snapshot for RBD snapshots
- Implement list_monitors, get_monitor_status, quorum_health
- Implement get_ceph_health with status, summary, and details
- All operations use proper error handling with Option safety
- Add 4 unit tests for pool, OSD, monitor, and health serialization