[Feature]: Add cross-platform binary builds to GoReleaser

[mrhillsman]

Problem Statement

GoReleaser is currently configured to build only linux/amd64. Users who work from macOS (common for developers targeting remote OpenShift clusters) have no pre-built binary and must build from source with CGo enabled (required by the SQLite dependency), which adds friction.

Proposed Solution

Add darwin/amd64 and darwin/arm64 build targets to .goreleaser.yaml. Since the project uses github.com/mattn/go-sqlite3 (CGo), cross-compilation requires either:

• Cross-compilation toolchains in CI (e.g. zig cc as the C compiler)
• Separate macOS CI runners
• Switching to a pure-Go SQLite driver like modernc.org/sqlite to eliminate the CGo requirement entirely

Alternatives Considered

• Status quo — macOS users build from source. Acceptable for an internal tool but not ideal for GA.
• Pure-Go SQLite driver — modernc.org/sqlite is a CGo-free alternative. This would make cross-compilation trivial but requires migration and testing of the audit system.

Area

CLI / Configuration

Additional Context

The container image only targets linux/amd64 as well. Multi-arch container images (linux/arm64) could be a follow-up if there's demand for ARM-based OpenShift nodes.

[mrhillsman]

Resolved by #151
Resolved by #153