feat: multi-platform release builds with homebrew tap automation - Build pre-compiled binaries for macOS (arm64/amd64) and Linux (arm64/amd64) - Add SHA256 checksums for all artifacts - Automate homebrew-tap formula updates on release - Remove local homebrew formula (now in vicentereig/homebrew-tap) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>