change: version infor added to partitions schema

PARTITIONING.md

@@ -62,6 +62,12 @@ System state can be monitored via the `partitions.monitoring` view.
 SELECT * FROM partitions.monitoring;
 ```
 
+### Versioning
+To check the installed version of the partitioning solution:
+```sql
+SELECT * FROM partitions.version ORDER BY installed_at DESC LIMIT 1;
+```
+
 ### Least Privilege Access (`zbx_monitor`)
 For monitoring purposes, it is recommended to create a dedicated user with read-only access to the monitoring view.