### What does this PR do?
### How did you verify your code works?
---------
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
## Summary
- Implements automated Windows code signing for x64 and x64-baseline
builds
- Integrates DigiCert KeyLocker for secure certificate management
- Adds CI/CD pipeline support for signing during builds
## Changes
- Added `.buildkite/scripts/sign-windows.sh` script for automated
signing
- Updated CMake configurations to support signing workflow
- Modified build scripts to integrate signing step
## Testing
- Script tested locally with manual signing process
- Successfully signed test binaries at:
- `C:\Builds\bun-windows-x64\bun.exe`
- `C:\Builds\bun-windows-x64-baseline\bun.exe`
## References
Uses DigiCert KeyLocker tools for Windows signing
## Next Steps
- Validate Buildkite environment variables in CI
- Test full pipeline in CI environment
---------
Co-authored-by: Jarred Sumner <jarred@bun.sh>
Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
### What does this PR do?
reduce number of zombie build processes that can happen in CI or when
building locally
### How did you verify your code works?
