- Create reusable .github/actions/sign-windows action for Windows binary signing
- Add standalone .github/workflows/test-windows-signing.yml for independent testing
- Update release.yml to use new sign-windows action with proper job dependencies
- Support DigiCert certificates via GitHub secrets (DIGICERT_CERTIFICATE, DIGICERT_PASSWORD)
- Include comprehensive validation, error handling, and dry-run capabilities
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>