Added release notes and version entries for 2025.43.0

Author: GitHub Actions

blog/2025-10-08-Release-0.md

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+---
+author: meshcloud
+title: Release 2025.43.0
+---
+
+Release period: 2025-10-01 to 2025-10-08
+
+This release includes the following issues:
+* Building Block Definitions Filter Results Improvement
+* Fix Rare Race Condition in Tenant Replication
+* Improved Workspace Role Expiration Alert Modal
+* Fix Authentication in OpenStack With Custom Configuration
+* View Runner assigned to Building Block Definition
+* Prevent Stuck Building Block Upgrades
+* Improved meshPlatform API Validation for Publication Status
+<!--truncate-->
+
+## Ticket Details
+### Building Block Definitions Filter Results Improvement
+**Audience:** User<br>
+
+#### Description
+The building block definitions overview page now shows proper message in the table when applied 
+filters don't match any definitions, instead of showing the empty state. This provides clearer 
+feedback that definitions exist but are filtered out.
+
+### Fix Rare Race Condition in Tenant Replication
+**Audience:** User<br>
+
+#### Description
+We fixed an issue where a race condition could occur during tenant replication. In very rare cases, when a new tenant
+replication was triggered while a retry of a previous replication was still running, the newer replication failed
+but was never retried. This could lead to tenants remaining in the failed state until the nightly replication.
+Tenant replications will now be handled correctly even when multiple replication attempts overlap, ensuring that 
+the most recent replication request is always processed.
+
+### Improved Workspace Role Expiration Alert Modal
+**Audience:** User<br>
+
+#### Description
+The workspace role expiration alert modal has been enhanced with a better layout and clearer navigation. 
+The modal now displays workspace expiration information in a more structured format with direct "Go to 
+Workspace" buttons for each workspace, making it easier to extend or modify access permissions.
+
+### Fix Authentication in OpenStack With Custom Configuration
+**Audience:** User<br>
+
+#### Description
+We fixed an issue where OpenStack authentication would fail when configuring a custom project or domain. 
+The platform now correctly uses the configured domain and project values for authentication.
+
+### View Runner assigned to Building Block Definition
+**Audience:** User<br>
+
+#### Description
+Platform engineers can now see which runner is associated with a building block definition version in the "Implementation"
+tab of the building block definition. This information enables you to access the workload identity federation information
+for that runner.
+
+#### How to use
+Navigate to a building block definition implementation in the platform builder or admin area to see its associated runner. 
+Changing the runner assignment is not yet supported but will be available in a future update.
+
+### Prevent Stuck Building Block Upgrades
+**Audience:** User<br>
+
+#### Description
+We fixed an issue where building block upgrades could get stuck when you triggered an upgrade while a 
+building block run was still in progress. Now we prevent you from upgrading a building block if its 
+current run hasn't finished yet, ensuring your upgrades complete successfully.
+
+### Improved meshPlatform API Validation for Publication Status
+**Audience:** User<br>
+
+#### Description
+We improved validation for the meshPlatform API to ensure that when you create a meshPlatform, it must be in a
+publication status of either PUBLISHED or UNPUBLISHED. If you attempt to create a meshPlatform with an invalid
+publication status, the API now returns a clear and meaningful error message explaining the requirement. This helps
+prevent configuration errors and provides better guidance when working with the meshPlatform API programmatically.
+