feat: add aviation and satellite tools

Add aircraft_in_area, find_aircraft, get_aircraft_track and
get_aircraft_info over the live aircraft sources, with an optional
military feed, and next_satellite_pass and satellites_overhead over the
satellite catalog and the existing pass predictor.

Source failures from the live contract now become tool errors with the
matching code, so a rate limit reaches clients as retry_later with a
wait time. Tool schemas may use pattern.

docs/TOOLS.md

@@ -87,3 +87,9 @@ public feeds the sources already use.
 | `get_earthquakes`     | `earthquakes` | USGS M2.5+ events in the last 24 hours, strongest first        |
 | `get_active_fires`    | `fires`       | NASA FIRMS detections in an area, highest radiative power first |
 | `get_recent_launches` | `launches`    | Launch Library 2 launches in the last 30 days, newest first    |
+| `aircraft_in_area`    | `aircraft`    | Aircraft in an area, nearest first; `military: true` reads the `military` feed |
+| `find_aircraft`       | `aircraft`    | Aircraft anywhere by callsign, ICAO address or registration    |
+| `get_aircraft_track`  | `aircraft`    | Recent positions of one aircraft, thinned to 200 points        |
+| `get_aircraft_info`   | `aircraft`    | Aircraft type and registration, and flight route, from adsbdb  |
+| `next_satellite_pass` | `satellites` | Next pass over a point (default the ISS), with naked-eye visibility |
+| `satellites_overhead` | `satellites` | Satellites in a CelesTrak group above a point now, highest first |