freewrite-editor 0.1.0

First downloadable Mac build of freewrite-editor.\n\nIncludes:\n- DMG drag-to-Applications installer\n- Zip app bundle archive\n- SHA256 checksums\n\nNote: this build is signed with an Apple Development certificate, not Developer ID notarized yet. If macOS blocks the first launch, right-click the app and choose Open. A fully smooth public install flow will require Developer ID signing and Apple notarization.