feat(satellites): file satellites under six classes with a toggle each

The satellites layer now sorts every object into Stations, Imaging,
Telecom, Starlink, Probes or Debris, each with a chip and a live count on
the layer row. Stations and Imaging show by default; the Starlink chip is
the former DENSE catalog switch. Hidden classes keep their points, so a
toggle needs no reload, and they leave the detection overlay and the voice
position lists.

A class comes, strongest evidence first, from CelesTrak SATCAT (object type
and status, served by a new /api/celestrak-satcat/<group> proxy route and
cached for a day), the bundled UCS Satellite Database pack (operator, owner
country and purpose), name patterns for later launches, and the CelesTrak
group. The core catalog also reads the resource, weather, planet, sar and
science groups. Payloads with no evidence of life launched 20 or more years
ago are filed as debris. The UCS pack, its build script and its data credit
are added.

src/i18n/locales/fr.json

@@ -1023,8 +1023,6 @@
   "Starlink {detail} — click to retry": "Starlink {detail} — cliquer pour réessayer",
   "load failed": "échec du chargement",
   "Showing the full Starlink shell — click for the core catalog only": "Constellation Starlink complète affichée — cliquer pour le catalogue de base seulement",
-  "DENSE ···": "DENSE ···",
-  "DENSE ✕": "DENSE ✕",
   "DENSE": "DENSE",
   "CelesTrak unreachable": "CelesTrak injoignable",
   "DOCKED · {name} · +{extra}": "AMARRÉ · {name} · +{extra}",
@@ -3302,5 +3300,22 @@
   "Refresh map still": "Actualiser l’image fixe sur la carte",
   "The map still uses a separate request and may show a different moment.": "L’image fixe de la carte utilise une requête distincte et peut montrer un autre moment.",
   "Video plays from Québec 511, which sees your IP address.": "La vidéo est lue depuis Québec 511, qui voit votre adresse IP.",
+  "STATIONS": "STATIONS",
+  "Crewed stations and the craft that visit them": "Stations habitées et les vaisseaux qui s’y rendent",
+  "IMAGING": "IMAGERIE",
+  "Earth observation: optical, radar, weather and science": "Observation de la Terre : optique, radar, météo et science",
+  "TELECOM": "TÉLÉCOM",
+  "Communications and navigation satellites, Starlink excepted": "Satellites de communication et de navigation, hors Starlink",
+  "STARLINK": "STARLINK",
+  "The Starlink constellation (thousands of extra points)": "La constellation Starlink (des milliers de points supplémentaires)",
+  "PROBES": "SONDES",
+  "Space science, technology demonstration and other payloads": "Sciences spatiales, démonstrations technologiques et autres charges utiles",
+  "DEBRIS": "DÉBRIS",
+  "Rocket bodies, fragments and dead satellites": "Étages de fusée, fragments et satellites hors service",
+  "Classes may lag: SATCAT is a cached copy": "Classes peut-être en retard : SATCAT est une copie en cache",
+  "Classes may lag: SATCAT unavailable": "Classes peut-être en retard : SATCAT indisponible",
+  "CelesTrak SATCAT gives each object's type and status. Without a current copy the classes rest on the UCS database, names and CelesTrak groups, so a satellite that has died since may still show as working.": "SATCAT de CelesTrak donne le type et l’état de chaque objet. Sans copie à jour, les classes reposent sur la base UCS, les noms et les groupes CelesTrak : un satellite hors service depuis peut encore apparaître comme actif.",
+  "STARLINK ···": "STARLINK ···",
+  "STARLINK ✕": "STARLINK ✕",
   "COURSE HOLD · AIS": "VERROU ROUTE · AIS"
 }