## Summary
- Add `bun_version` field to `link-metadata.json`
- Pass `VERSION` CMake variable to the metadata script as `BUN_VERSION`
env var
This ensures the build version is captured in the link metadata JSON
file, which is useful for tracking which version produced a given build
artifact.
## Test plan
- Build with `bun bd` and verify `link-metadata.json` includes
`bun_version`
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude <noreply@anthropic.com>
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