Merge branch 'main' into fix/geo-distance-dateline

# Conflicts:
#	CHANGELOG.md

src/layers/flights/ingestion.js

@@ -1,5 +1,9 @@
 import { ERROR_BACKOFF_INTERVAL } from './recordPolicy.js';
 
+// Marks English the Layers panel translates when it shows the error. Kept
+// local: this module stays free of browser globals (package boundaries).
+const msg = (text) => text;
+
 /** Own acquisition, cancellation, freshness and backoff independently of rendering. */
 export function createIngestion({
   feed,
@@ -41,9 +45,10 @@ export function createIngestion({
         const sourceStale = snapshot.stale || snapshot.freshness === 'unknown';
         feed._backoff = sourceStale;
         feed._retryAt = 0;
+        // i18n-ignore: English data; the panel shows it through FEED_ERROR_PATTERNS (ui/statusText.js)
         feed._lastError = sourceStale
           ? sourceAgeMs == null
-            ? 'Source snapshot time unavailable'
+            ? msg('Source snapshot time unavailable')
             : `Source snapshot ${Math.max(2, Math.round(sourceAgeMs / 60_000))} min old`
           : null;
         feed._lastSource = snapshot.source;
@@ -77,7 +82,9 @@ export function createIngestion({
           setSourceLabel(feed._lastSource);
         }
         feed._lastError =
-          e?.name === 'LiveSourceError' ? e.message : 'Live data unavailable';
+          e?.name === 'LiveSourceError'
+            ? e.message
+            : msg('Live data unavailable');
       } finally {
         feed._activeUpdateControllers.delete(resourceController);
       }

src/layers/flights/tracking.js

@@ -1,4 +1,6 @@
 import * as Cesium from 'cesium';
+import { formatNumber, t } from '../../i18n/index.js';
+import { unitLabel } from '../../ui/unitLabels.js';
 import { nextCockpitNearContacts } from '../../data/cockpitAirLod.js';
 import { trackedModelZoomActive } from '../../data/trackedModelRegime.js';
 import {
@@ -130,6 +132,7 @@ export function createTracking({
         icao24,
         // Honesty cue: the contact is coasting on dead reckoning, so the
         // narrated position/velocity are last-known rather than live.
+        // i18n-ignore: voice-context data, English for the model
         status: described.stale ? 'stale (missed polls)' : 'live',
       },
     };
@@ -751,11 +754,18 @@ export function createTracking({
     // the tail number rather than raw hex.
     const cs = parts.queries._contactLabel(icao24, info);
     const altFt = Math.round((info.altitude || 0) * 3.28084);
-    const fl = altFt >= 18000 ? `FL${Math.round(altFt / 100)}` : `${altFt} ft`;
-    const spd = info.velocity ? `${Math.round(info.velocity * 1.944)} kts` : '';
+    // Flight levels are an aviation code; feet and knots read in the active
+    // language ("0 фт · 1 уз").
+    const quantity = (value, unit) =>
+      `${formatNumber(value, { useGrouping: false })} ${unitLabel(unit)}`;
+    const fl =
+      altFt >= 18000 ? `FL${Math.round(altFt / 100)}` : quantity(altFt, 'ft');
+    const spd = info.velocity
+      ? quantity(Math.round(info.velocity * 1.944), 'kts')
+      : '';
     const stale =
       flightState.records.missingPolls.get(icao24) || flightState.feed._backoff
-        ? 'STALE'
+        ? t('STALE')
         : '';
     const lines = [[cs, fl, spd, stale].filter(Boolean).join(' · ')];
     // Converted contacts report their class as TR-3B and nothing else — the