Release 0.12.4

Author: francois-drielsma

.github/workflows/docker-publish.yml

@@ -9,6 +9,7 @@ on:
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
+  CACHE_IMAGE: ghcr.io/${{ github.repository }}:buildcache
 
 jobs:
   build-spine:
@@ -52,8 +53,13 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           pull: true
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          cache-from: |
+            type=registry,ref=${{ env.CACHE_IMAGE }}
+            type=gha,scope=spine-${{ github.ref_name }}
+            type=gha,scope=spine-main
+          cache-to: |
+            type=registry,ref=${{ env.CACHE_IMAGE }},mode=max
+            type=gha,scope=spine-${{ github.ref_name }},mode=max
 
   cleanup-old-images:
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -1,5 +1,20 @@
 # Changelog
 
+## [0.12.4] - 2026-05-18
+
+### Changed
+- **Docker publishing**: Add a persistent Buildx registry cache for published
+  container builds so release-tag builds can reuse expensive dependency layers
+  across workflow runs instead of relying only on GitHub Actions cache scope.
+
+### Fixed
+- **Stored property metadata**: Add missing array metadata for output data
+  derived attributes so values such as `module_ids` and truth direction
+  vectors are correctly classified for scalar expansion and serialization
+  introspection.
+- **Truth particle units**: Correct `TruthParticle.ke` metadata from rest-mass
+  units to kinetic-energy units.
+
 ## [0.12.3] - 2026-05-12
 
 ### Added

src/spine/version.py

@@ -1,3 +1,3 @@
 """Module which stores the current software version."""
 
-__version__ = "0.12.3"
+__version__ = "0.12.4"