What changed

• normalize Bazel-discovered macOS wheel platform tags before packaging
• allow CI/release to override the emitted platform tag with VELARIA_PLATFORM_TAG
• make macOS wheel jobs publish an arm64 artifact instead of the incorrect universal2 tag

Why

The release pipeline was publishing a macOS wheel tagged as macosx_10_13_universal2, which does not install correctly on Apple Silicon machines like the local arm64 macOS 14.7 environment.

Impact

• release artifacts for macOS now target macosx_11_0_arm64
• future GitHub releases should produce a directly installable wheel for Apple Silicon with Python 3.12

Validation

• not run in this change