ui/phase-13: planet inspector — read-only

Plumbs the map → inspector pathway: a click on a planet selects it
through the new SelectionStore, the sidebar Inspector tab swaps
its empty-state copy for a per-kind read-only field set, and a
mobile-only bottom-sheet mirrors the same content over the map.
Field projection in api/game-state.ts now surfaces every documented
planet field.

ui/frontend/src/lib/i18n/locales/en.ts

@@ -124,6 +124,26 @@ const en = {
 	"game.bottom_tabs.calc": "calc",
 	"game.bottom_tabs.order": "order",
 	"game.bottom_tabs.more": "more",
+
+	"game.inspector.planet.kind.local": "your planet",
+	"game.inspector.planet.kind.other": "other race planet",
+	"game.inspector.planet.kind.uninhabited": "uninhabited planet",
+	"game.inspector.planet.kind.unidentified": "unidentified planet",
+	"game.inspector.planet.field.name": "name",
+	"game.inspector.planet.field.owner": "owner",
+	"game.inspector.planet.field.coordinates": "coordinates",
+	"game.inspector.planet.field.size": "size",
+	"game.inspector.planet.field.population": "population",
+	"game.inspector.planet.field.colonists": "colonists",
+	"game.inspector.planet.field.industry": "industry",
+	"game.inspector.planet.field.industry_stockpile": "industry stockpile ($)",
+	"game.inspector.planet.field.materials_stockpile": "materials stockpile (M)",
+	"game.inspector.planet.field.natural_resources": "natural resources",
+	"game.inspector.planet.field.production": "current production",
+	"game.inspector.planet.field.free_industry": "free production",
+	"game.inspector.planet.production_none": "none",
+	"game.inspector.planet.unidentified_no_data": "no data — only the location is known",
+	"game.inspector.sheet_close": "close",
 } as const;
 
 export default en;