World airport dataset + distance cap on generated jobs (ISS-079, v0.44.0)

lib/airports.ts

@@ -52,11 +52,13 @@ export function parseCsv(text: string): CsvRow[] {
 // The 2026 schema splits "airport" into small/medium/large_airport (older dumps used a
 // single "airport" type + category column) — both spellings are accepted. Heliports are
 // excluded — no fixed-wing transport ops; other types (closed, balloonport, ...) are
-// irrelevant to an airline-ops game.
+// irrelevant to an airline-ops game. The committed dataset is pre-curated to large_airport
+// only (scripts/build-world-airports.mjs); this check stays as a cheap guard against an
+// uncurated dump being swapped in.
 const INCLUDED_TYPES = new Set(['airport', 'small_airport', 'medium_airport', 'large_airport', 'seaplane_base']);
 
-export function filterEuAirports(rows: CsvRow[]): CsvRow[] {
-  return rows.filter((r) => r.continent === 'EU' && INCLUDED_TYPES.has(r.type));
+export function filterWorldAirports(rows: CsvRow[]): CsvRow[] {
+  return rows.filter((r) => INCLUDED_TYPES.has(r.type));
 }
 
 export interface AirportProperties {
@@ -93,13 +95,26 @@ export function toGeoJson(rows: CsvRow[]): GeoJsonFeatureCollection {
   return { type: 'FeatureCollection', features };
 }
 
+// Three consumers key features by ICAO with silent-overwrite semantics (the map's airport
+// index, the route/queue GeoJSON builders and the sim's airport lookups) — a duplicate would
+// corrupt state without any error, so fail loud at load instead.
+export function assertUniqueIcaos(fc: GeoJsonFeatureCollection): void {
+  const seen = new Set<string>();
+  for (const f of fc.features) {
+    if (seen.has(f.properties.icao)) throw new Error(`duplicate ICAO in airport dataset: ${f.properties.icao}`);
+    seen.add(f.properties.icao);
+  }
+}
+
 let cached: GeoJsonFeatureCollection | null = null;
 
 export async function loadAirportsGeoJson(): Promise<GeoJsonFeatureCollection> {
   if (cached) return cached;
-  const file = path.join(process.cwd(), 'data', 'airports_eu.csv');
+  const file = path.join(process.cwd(), 'data', 'airports_world.csv');
   const text = await fs.readFile(file, 'utf8');
-  cached = toGeoJson(filterEuAirports(parseCsv(text)));
+  const fc = toGeoJson(filterWorldAirports(parseCsv(text)));
+  assertUniqueIcaos(fc);
+  cached = fc;
   return cached;
 }