macSandbox for Windows 0.2.3

Fixes

• Prevented the host app from terminating with SIGPIPE when QEMU closes the QMP socket during guest shutdown.
• Added graceful QMP disconnection handling for partial writes, interrupted system calls, and closed peers.
• Added startup recovery for a completed baseline left in the creating state after a host interruption.
• Recovery verifies the guest completion marker, baseline disk, UEFI variables, and saved credential before promoting the baseline to ready.

Validation

• All 9 regression tests passed on the macOS 14 ARM64 release runner.
• Branded EDK II firmware and the bundled QEMU runtime built successfully.
• GitHub Actions verified the generated DMG integrity before publishing it.

Distribution

This release uses ad-hoc code signing and is not notarized because Developer ID and notarization credentials are not configured in the repository secrets.

Full Changelog: v0.2.2...v0.2.3