[n4dh1x]

What & why

Adds opt-in one-click extraction in Settings → General with three destinations: beside the archive, a fresh folder named after the archive, or a native folder chooser. Recognized files opened from Finder extract without an archive browser; cancellation leaves the archive alone, and split volumes are processed once.

Existing output is preserved. Extraction stages on the destination volume, then moves whole top-level items using numbered names for conflicts (including file/directory conflicts and dangling symlinks). Ordinary browser extraction retains its existing behavior.

Includes the fork's GitHub build/prerelease workflow and generated localization catalog. The feature addresses sarensw#280.

How it was verified

• Reproduced the collision with both engines before the fix: failing regression run. 7-Zip reported Extraction failed: Failed to create output file; XAD reported Could not create directory (error 16).
• Normal PR CI passed: 657 tests in 144 suites; direct and App Store schemes compiled and passed architecture checks.
• The regression passes for both 7-Zip and XAD, preserving existing output and dangling symlinks while byte-comparing new output to the fixture.
• Ad-hoc universal release build passed all tests, architecture and signature checks; fixed prerelease published. The downloaded ZIP's checksum, integrity, architectures, feature/fix, and fork settings were independently checked.
• UI evidence attempt: the unchanged upstream baseline timed out querying its accessibility hierarchy. Manual UI verification and before/after screenshots remain incomplete; the upstream PR #359 is a draft with this gap disclosed.

AI disclosure: Codex was the primary author of the implementation, tests, and release setup.

Checklist

• Core/build verification evidence included above; manual UI verification gap disclosed
• Changelog entry in Config/products/macpacker.json references upstream issue Feature request: Extract archives on open sarensw/MacPacker#280
• AI involvement disclosed