WIP: Test ITKClangFormatLinterAction composite-action branch (bad format)

Temporary PR to validate PR #23 of ITKClangFormatLinterAction.
This branch has a deliberate clang-format violation — expect FAIL.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hjmjohnson

.github/workflows/clang-format-linter.yml

@@ -9,6 +9,6 @@ jobs:
     steps:
     - uses: actions/checkout@v5
 
-    - uses: InsightSoftwareConsortium/ITKClangFormatLinterAction@main
+    - uses: InsightSoftwareConsortium/ITKClangFormatLinterAction@composite-action
       with:
         itk-branch: main

include/itkCuberilleImageToMeshFilter.h

@@ -19,6 +19,7 @@
 #ifndef itkCuberilleImageToMeshFilter_h
 #define itkCuberilleImageToMeshFilter_h
 
+int    deliberately_bad_format   =    42 ;
 #define DEBUG_PRINT 0
 #define USE_GRADIENT_RECURSIVE_GAUSSIAN 0
 #define USE_ADVANCED_PROJECTION 0