package-windows.bat builds gosentry.exe then bundles it with README and
CHANGELOG into a versioned .zip via PowerShell Compress-Archive.
package-linux.sh does the same for linux-amd64 and linux-arm64 (arm64
cross-compiles via aarch64-linux-gnu-gcc; skips gracefully if absent),
producing .tar.gz archives with files at the archive root.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
mixeme