ci: trial larger GitHub macOS runners for Python releases

.github/workflows/build-exe-for-python-sdk.yml

@@ -153,11 +153,15 @@ jobs:
           retention-days: 7
 
   # Blacksmith x64 CI builds use 2 vCPU for compilation, bundling, and wheel smokes.
+  # Release macOS builds use larger GitHub runners; ordinary CI and direct
+  # builder dispatches retain the standard native target matrix.
   build:
     needs: [plan, sdk-wheel]
     name: ${{ matrix.target }}
     runs-on: >-
-      ${{ inputs.ci && !inputs.release && matrix.target == 'node24-linux-x64'
+      ${{ inputs.release && matrix.target == 'node24-macos-x64' && 'macos-15-large'
+          || inputs.release && matrix.target == 'node24-macos-arm64' && 'macos-15-xlarge'
+          || inputs.ci && !inputs.release && matrix.target == 'node24-linux-x64'
           && vars.DSH_CI_FAILOVER_LINUX == 'blacksmith' && 'blacksmith-2vcpu-ubuntu-2404'
           || inputs.ci && !inputs.release && matrix.target == 'node24-win-x64'
           && vars.DSH_CI_FAILOVER_WINDOWS == 'blacksmith' && 'blacksmith-2vcpu-windows-2025'