Aeronautics: touchdown

# Changelog

## 1.0.1 — Bugfix release

### Fixed
- **RETARD** now re-arms when you climb above ~40 blocks and descend through 20 again (go-arounds / multiple approaches work)
- **TERRAIN** warning triggers much more reliably — relaxed vertical-speed and consecutive-descent requirements so it no longer needs the strict approach/landing flags
- **TOO LOW TERRAIN** also fires more consistently on short final
- **Create: Aeronautics / Sable support** — callouts now work while standing or sitting on a flying ship/contraption (uses world position deltas + soft Sable detection)
- **No more false PULL UP / TERRAIN while walking** — ground walking is no longer treated as airborne
- **GPWS now angle-aware** — SINK RATE / PULL UP / TERRAIN require a real descent path angle (and/or nose-down pitch), so gentle flight and level ships no longer spam warnings

### Notes
- Takeoff voice files are still silent placeholders — replace the `.ogg` files under `assets/.../takeoff/` to enable them
- Sable integration uses reflection + heuristics; full rigid-body velocity still planned for a later version