Real-world testing showed the unsigned app just needs the original 0.3.2
one-liner after the "damaged" prompt (System Settings "Open Anyway" also
works). Drop the Sequoia / "don't trash it" / clear-DMG-first / script
walkthrough noise and match the historical release-note style.
- release-notes/v0.4.0.md: macOS = drag in + `xattr -cr ...`, Windows one
line, Linux kept short.
- docs/desktop/04-installation.md: same trim, remove duplicated FAQ entry.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>