Merge branch 'main' into docker-support

src/annotations/annotationEngine.test.mjs

@@ -313,7 +313,9 @@ test('retry: a plain HTTP 500 still exhausts the existing 8s/25s transient ladde
   t.mock.timers.enable({ apis: ['setTimeout', 'Date'], now: 100_000 });
   globalThis.window = { setTimeout: globalThis.setTimeout, clearTimeout: globalThis.clearTimeout };
   const requestTimes = [];
-  globalThis.fetch = async () => {
+  globalThis.fetch = async (url) => {
+    if (String(url).endsWith('/status'))
+      return Response.json({ configured: true });
     requestTimes.push(Date.now());
     return httpFailure(500);
   };
@@ -402,7 +404,7 @@ test('outline upgrade updates the rendered element in place without remove/add',
   };
   let overpassCall = 0;
   globalThis.fetch = async (url) => {
-    if (String(url).startsWith('https://maps.googleapis.com/')) {
+    if (String(url).startsWith('/api/google/geocode')) {
       return { json: async () => ({
         status: 'OK',
         results: [{

src/annotations/annotationResolver.test.mjs

@@ -200,7 +200,7 @@ test('ask-side admin bypass: "the Texas Capitol" recovers near-view despite a fa
   const calls = [];
   installGoogleMocks(t, async (url) => {
     calls.push(String(url));
-    if (String(url).startsWith('https://maps.googleapis.com/')) {
+    if (String(url).startsWith('/api/google/geocode')) {
       return { json: async () => geocodePayload({
         lat: 31.0000,
         lon: -99.0000,
@@ -235,7 +235,7 @@ test('ask-side admin bypass: explicit "state of Texas" skips recovery and proxim
   const calls = [];
   installGoogleMocks(t, async (url) => {
     calls.push(String(url));
-    assert.match(String(url), /^https:\/\/maps\.googleapis\.com\/maps\/api\/geocode/);
+    assert.match(String(url), /^\/api\/google\/geocode\?/);
     return { json: async () => geocodePayload({
       lat: 31.0000,
       lon: -99.0000,
@@ -273,7 +273,7 @@ for (const fixture of [
     const calls = [];
     installGoogleMocks(t, async (url) => {
       calls.push(String(url));
-      if (String(url).startsWith('https://maps.googleapis.com/')) {
+      if (String(url).startsWith('/api/google/geocode')) {
         return { json: async () => geocodePayload({
           lat: fixture.lat,
           lon: fixture.lon,
@@ -299,7 +299,7 @@ test('ask-side admin bypass: bare "Texas" remains on the guarded recovery path',
   const calls = [];
   installGoogleMocks(t, async (url) => {
     calls.push(String(url));
-    if (String(url).startsWith('https://maps.googleapis.com/')) {
+    if (String(url).startsWith('/api/google/geocode')) {
       return { json: async () => geocodePayload({
         lat: 31.0000,
         lon: -99.0000,
@@ -328,7 +328,7 @@ test('ask-side admin bypass: admin level 2/3 result types never grant a township
   const calls = [];
   installGoogleMocks(t, async (url) => {
     calls.push(String(url));
-    if (String(url).startsWith('https://maps.googleapis.com/')) {
+    if (String(url).startsWith('/api/google/geocode')) {
       const query = new URL(String(url)).searchParams.get('address');
       return { json: async () => geocodePayload({
         lat: 39.7817,
@@ -380,7 +380,7 @@ function installCapitolMocks(t, elements, components = [
   { long_name: 'Capitol Hill', types: ['neighborhood', 'political'] },
 ]) {
   installGoogleMocks(t, async (url) => {
-    if (String(url).startsWith('https://maps.googleapis.com/')) {
+    if (String(url).startsWith('/api/google/geocode')) {
       return { json: async () => ({ status: 'OK', results: [{
         formatted_address: 'Washington, DC 20004, USA',
         types: ['establishment', 'landmark', 'point_of_interest', 'tourist_attraction'],
@@ -458,7 +458,7 @@ test('keyless: a key that geocodes to nothing still anchors the annotation', asy
   const requests = [];
   installGoogleMocks(t, async (url) => {
     requests.push(String(url));
-    if (String(url).startsWith('https://maps.googleapis.com/')) return GOOGLE_FOUND_NOTHING;
+    if (String(url).startsWith('/api/google/geocode')) return GOOGLE_FOUND_NOTHING;
     return {
       ok: true,
       json: async () => ({
@@ -495,7 +495,7 @@ test('keyless: a key that geocodes to nothing still anchors the annotation', asy
     high: { latitude: 30.28, longitude: -97.68 },
   });
   // Google is asked first and exactly once; one Photon call answers it.
-  assert.equal(requests.filter((url) => url.includes('maps.googleapis.com')).length, 1);
+  assert.equal(requests.filter((url) => url.includes('/api/google/geocode')).length, 1);
   assert.equal(requests.filter((url) => url.includes('photon.komoot.io')).length, 1);
 });
 
@@ -512,7 +512,7 @@ test('keyless: OSM matching uses the feature\'s canonical name, not the user\'s
 
   installGoogleMocks(t, async (url, init) => {
     const href = String(url);
-    if (href.startsWith('https://maps.googleapis.com/')) return GOOGLE_FOUND_NOTHING;
+    if (href.startsWith('/api/google/geocode')) return GOOGLE_FOUND_NOTHING;
     if (href.startsWith('/api/google/text-search')) return { ok: true, json: async () => ({ places: [] }) };
     if (href.startsWith('https://photon.komoot.io/')) {
       return {
@@ -575,7 +575,7 @@ test('keyless: a Photon outage is not remembered as "no such place"', async (t)
   const requests = [];
   installGoogleMocks(t, async (url) => {
     requests.push(String(url));
-    if (String(url).startsWith('https://maps.googleapis.com/')) return GOOGLE_FOUND_NOTHING;
+    if (String(url).startsWith('/api/google/geocode')) return GOOGLE_FOUND_NOTHING;
     if (!photonReachable) throw new Error('network down');
     return photonUp;
   });

src/annotations/regionRing.test.mjs

@@ -51,9 +51,11 @@ test('region ring: Natural Earth names resolve without a geocoder', async () =>
 test('region ring: a slow admin-boundary lookup returns region-timeout within the budget', async () => {
   let adminSignal;
   let release;
+  let lookupStarted;
   const { resolveRegionRingForQuery } = createAnnotationResolver({
     featureSource: featureSource({
       getAdministrativeAreas(_point, { signal }) {
+        lookupStarted = Date.now();
         adminSignal = signal;
         return new Promise((resolve) => {
           release = resolve;
@@ -61,7 +63,6 @@ test('region ring: a slow admin-boundary lookup returns region-timeout within th
       },
     }),
   });
-  const started = Date.now();
   const region = await resolveRegionRingForQuery(
     'Atlantis',
     undefined,
@@ -73,8 +74,10 @@ test('region ring: a slow admin-boundary lookup returns region-timeout within th
     ring: null,
     error: 'region-timeout',
   });
+  // Timed from the boundary lookup, so the bundled pack scans before it do not
+  // count. Under the 3 s default budget, so an ignored budgetMs still fails.
   assert.ok(
-    Date.now() - started < 1000,
+    Date.now() - lookupStarted < 2_000,
     'returns at the budget, not the lookup',
   );
   // The lookup is left running so it can fill the boundary cache.

src/app/constructCatalog.js

@@ -25,6 +25,7 @@ import { createApplicationAwareness } from './layers/militaryAwareness.js';
 import { createApplicationFirms } from './layers/firms.js';
 import { createApplicationEarthquakes } from './layers/earthquakes.js';
 import { createApplicationFirePerimeters } from './layers/perimeters.js';
+import { createApplicationGnssIntegrity } from './layers/gnss.js';
 import { createApplicationCables } from './layers/submarineCables.js';
 import { createApplicationStreetLevel } from './layers/streetLevel.js';
 import { createInfrastructureLayers } from '../data/infrastructure.js';
@@ -120,6 +121,9 @@ export function createApplicationCatalog({
         createApplicationFirePerimeters({
           source: sources['fire-perimeters'],
         }),
+        createApplicationGnssIntegrity({
+          source: sources['gnss-integrity'],
+        }),
         createApplicationAlpr({ surface, source: sources.alpr }),
         createApplicationStreetLevel({
           surface,

src/app/constructCatalog.test.mjs

@@ -40,7 +40,7 @@ test('catalogs construct distinct layers and classification from their supplied
     signal: b.signal,
     surface: fixtureSurface(b.signal),
   });
-  assert.equal(first.layers.length, 30);
+  assert.equal(first.layers.length, 31);
   assert.ok(first.get('local-adsb'), 'Local ADS-B is registered');
   assert.deepEqual(
     first.metadata.find(({ id }) => id === 'local-adsb'),
@@ -60,6 +60,7 @@ test('catalogs construct distinct layers and classification from their supplied
       '2026-09-21T12:00:00.000Z',
     );
   assert.ok(first.get('fire-perimeters'));
+  assert.ok(first.get('gnss-integrity'));
   assert.ok(first.get('transit'));
   const order = first.layers.map(({ id }) => id);
   assert.deepEqual(
@@ -153,7 +154,7 @@ test('Mapillary can be omitted or replaced without changing catalog membership',
     surface: fixtureSurface(lifetime.signal),
   };
   const catalog = createApplicationCatalog(options);
-  assert.equal(catalog.layers.length, 30);
+  assert.equal(catalog.layers.length, 31);
   assert.deepEqual(catalog.get('street-level').providerIds, []);
   assert.equal(
     catalogControlServices(catalog).streetLevelLayer,

src/app/layers/gnss.js

@@ -0,0 +1,6 @@
+import { createGnssIntegrityLayer } from '../../layers/gnss/index.js';
+
+/** Wire the adsb.lol GNSS navigation-integrity layer into the application catalog. */
+export function createApplicationGnssIntegrity(options) {
+  return createGnssIntegrityLayer(options);
+}

src/app/layers/streetLevel.js

@@ -1,21 +1,40 @@
 import { createStreetLevelLayer } from '../../layers/streetLevel/index.js';
 import { createMapillaryProvider } from '../../layers/streetLevel/providers/mapillary/index.js';
+import { createGoogleProvider } from '../../layers/streetLevel/providers/google/index.js';
+import { createKartaViewProvider } from '../../layers/streetLevel/providers/kartaview/index.js';
+import { createPanoramaxProvider } from '../../layers/streetLevel/providers/panoramax/index.js';
 import * as sprites from '../../data/spriteOrder.js';
 import * as picking from '../../data/pickRegistry.js';
 import * as input from '../../data/inputOwnership.js';
+import * as scenePick from '../../data/scenePick.js';
 import * as render from '../../renderGovernor.js';
 
+/** The browser Maps key the scene was started with (src/app/scene.js). */
+const googleApiKey = () => globalThis.window?.__GOOGLE_MAPS_API_KEY__ || null;
+
 /**
- * Inject providers, or use Mapillary only when its source is supplied.
- * An explicit provider list replaces the default; unused sources.mapillary is
- * neither constructed nor validated, including when the list is empty.
+ * Mapillary, Google Street View, KartaView and Panoramax, once the Mapillary
+ * source is supplied; else none.
+ */
+function defaultProviders(sources) {
+  if (sources.mapillary == null) return [];
+  return [
+    createMapillaryProvider({ source: sources.mapillary }),
+    createGoogleProvider({ getApiKey: googleApiKey }),
+    createKartaViewProvider(),
+    createPanoramaxProvider(),
+  ];
+}
+
+/**
+ * Inject providers, or use the defaults. An explicit provider list replaces
+ * them; an unused sources.mapillary is neither constructed nor validated,
+ * including when the list is empty.
  */
 export function createApplicationStreetLevel({
   surface,
   sources = {},
-  providers = sources.mapillary == null
-    ? []
-    : [createMapillaryProvider({ source: sources.mapillary })],
+  providers = defaultProviders(sources),
 }) {
   return createStreetLevelLayer({
     providers,
@@ -23,6 +42,7 @@ export function createApplicationStreetLevel({
       sprites,
       picking,
       input,
+      scenePick,
       render,
       ground: surface?.groundFloor ?? null,
       meshFloor: surface?.meshFloor ?? null,

src/app/layers/streetLevel.test.mjs

@@ -27,3 +27,48 @@ test('explicit providers replace the default source and an empty list removes it
     /array/,
   );
 });
+
+test('the defaults are Mapillary (given its source), Street View, KartaView and Panoramax, which start off and travel as provider switches', async () => {
+  const { createDefaultLayerState } = await import('../../data/layerState.js');
+  const mapillary = {
+    getStatus() {},
+    getTile() {},
+    getSequenceImages() {},
+    nearestImages() {},
+  };
+  const layer = createApplicationStreetLevel({ sources: { mapillary } });
+  assert.deepEqual(layer.providerIds, [
+    'mapillary',
+    'google',
+    'kartaview',
+    'panoramax',
+  ]);
+  // A fresh page and a restored default agree: Street View is billed, so off.
+  layer.setParams(createDefaultLayerState().options['street-level']);
+  assert.equal(layer.getParams().google, false);
+  assert.equal(layer.getParams().mapillary, true);
+  // A link that lit Street View carries it in the shared switch field.
+  layer.setParams({ providerSwitches: 'google-1' });
+  assert.equal(layer.getParams().google, true);
+  assert.equal(
+    layer.getParams().providerSwitches,
+    'google-1*kartaview-0*panoramax-0',
+  );
+  // KartaView is keyless and free, but one source shows at a time.
+  layer.setParams({ providerSwitches: 'kartaview-1' });
+  assert.equal(layer.getParams().kartaview, true);
+  assert.equal(layer.getParams().google, false);
+  assert.equal(layer.getParams().mapillary, false);
+  // As is Panoramax: lighting it puts KartaView out.
+  layer.setParams({ providerSwitches: 'panoramax-1' });
+  assert.equal(layer.getParams().panoramax, true);
+  assert.equal(layer.getParams().kartaview, false);
+  assert.equal(layer.getParams().mapillary, false);
+  // The form the app writes (the README and CHANGELOG quote it).
+  assert.equal(
+    layer.getParams().providerSwitches,
+    'google-0*kartaview-0*panoramax-1',
+  );
+  // Without the application's Street Level source there are none.
+  assert.deepEqual(createApplicationStreetLevel({}).providerIds, []);
+});

src/app/sourceComposition.js

@@ -46,6 +46,7 @@ export const CATALOG_SOURCE_CONTRACTS = Object.freeze({
   cyclones: contract(['weather-cyclones'], ['getSnapshot']),
   earthquakes: contract(['earthquakes'], ['getSnapshot']),
   'fire-perimeters': contract(['fire-perimeters'], ['getSnapshot']),
+  'gnss-integrity': contract(['gnss-integrity'], ['getSnapshot']),
   cables: contract(['telegeography-submarine-cables'], ['fetch']),
   transit: contract(['transit'], ['requestSnapshot', 'getHistory']),
 });

src/app/sourceComposition.test.mjs

@@ -37,7 +37,7 @@ test('every acquisition source can be omitted without losing catalog membership'
 
 test('all acquisition sources may be absent, and enable fails before initializing or fetching', async (t) => {
   const actual = catalog({}, t);
-  assert.equal(actual.layers.length, 30);
+  assert.equal(actual.layers.length, 31);
   const manager = new LayerLifecycle(
     {},
     { getSourceAvailability: actual.getSourceAvailability },

src/app/tools.js

@@ -1,6 +1,7 @@
 import { SceneDirector } from '../scenes/director.js';
 import { initAnnotations } from '../annotations/index.js';
 import { initDrawTool } from '../annotations/drawTool.js';
+import { initGeoFileImport } from '../ui/geoFileImport.js';
 import { initImageryBoxTool } from '../ui/imageryBoxTool.js';
 import { createRecentImageryPanel } from '../ui/recentImagery.js';
 import { initGevVoiceCommands } from '../voice/gevRealtime.js';
@@ -56,6 +57,16 @@ export function createApplicationTools({
   // lifetime rather than to whoever last pressed the button.
   const drawTool = initDrawTool({ viewer, annotations });
   defer(() => drawTool?.destroy());
+  // DISPLAY ▸ Import: the person's own GeoJSON/KML/KMZ/GPX files, each its
+  // own data source. They live for the page session, so the application
+  // lifetime removes them and the drop listeners on the viewer container.
+  const geoFileImport = initGeoFileImport({
+    viewer,
+    navigation: styleManager,
+    ground: operations.surface?.groundFloor,
+    subscribeMapSource: (listener) => mapStackController?.subscribe?.(listener),
+  });
+  defer(() => geoFileImport?.destroy());
   // DATA ▸ Recent Imagery: the box tool claims the pointer like Draw and the
   // panel lives on the right rail, so both belong to the application
   // lifetime. The tileset lets the layer drape while the globe is hidden.

src/cockpitMath.js

@@ -83,6 +83,26 @@ export function cockpitAltitudeDisplayFt(altitudeM, onGround) {
   return Number.isFinite(altitudeM) ? altitudeM * 3.28084 : null;
 }
 
+/**
+ * HUD wording for a tracked aircraft's transponder emergency, or null.
+ * States what was broadcast, never a conclusion about the flight: the Mode A
+ * code when it names the status, else the ADS-B field it came from (an
+ * unrelated squawk is dropped).
+ * @param {{label?: string, squawk?: string|null, source?: string,
+ *   severity?: string}|null|undefined} emergency
+ * @returns {string|null}
+ */
+export function formatCockpitEmergency(emergency) {
+  const label = String(emergency?.label || '')
+    .trim()
+    .toUpperCase();
+  if (!label) return null;
+  if (emergency.source === 'squawk' && emergency.squawk)
+    return `SQUAWK ${emergency.squawk} · ${label}`;
+  const field = emergency.severity === 'priority' ? 'PRIORITY' : 'EMERGENCY';
+  return `ADS-B ${field} · ${label}`;
+}
+
 /** Format the cockpit Context scope without overstating installation coverage. */
 export function formatCockpitContextScope(
   subjectLabel,

src/cockpitMath.test.mjs

@@ -13,6 +13,7 @@ import {
   compassDivisions,
   formatAltitudeRulerTick,
   formatCockpitContextScope,
+  formatCockpitEmergency,
   formatCompassDivision,
   formatSpeedRulerTick,
   normalizeHeading,
@@ -364,3 +365,21 @@ test('tracked-identity resolution falls back to layer precedence', () => {
   assert.equal(resolveTrackedAircraftInfo({ trackedId: 'flights:aaa077' }), null);
   assert.equal(resolveTrackedAircraftInfo(), null);
 });
+
+test('cockpit emergency wording states the broadcast code, not a conclusion', () => {
+  assert.equal(
+    formatCockpitEmergency({ label: 'General emergency', squawk: '7700', source: 'squawk', severity: 'emergency' }),
+    'SQUAWK 7700 · GENERAL EMERGENCY',
+  );
+  assert.equal(
+    formatCockpitEmergency({ label: 'Downed aircraft', squawk: '1200', source: 'ads-b', severity: 'emergency' }),
+    'ADS-B EMERGENCY · DOWNED AIRCRAFT',
+    'an unrelated squawk is not quoted beside an ADS-B status',
+  );
+  assert.equal(
+    formatCockpitEmergency({ label: 'Minimum fuel', squawk: null, source: 'ads-b', severity: 'priority' }),
+    'ADS-B PRIORITY · MINIMUM FUEL',
+  );
+  assert.equal(formatCockpitEmergency(null), null);
+  assert.equal(formatCockpitEmergency({ label: '' }), null);
+});

src/codexOauthRealtime.test.mjs

@@ -145,17 +145,20 @@ test('Codex OAuth reader enforces expiry margin and bounds tokens without exp by
 
 test('Codex login resolves an installed executable before PATH and starts browser auth detached', async () => {
   const checked = [];
+  // Built with path.join so the stub matches the resolver on Windows too,
+  // where the separators are backslashes.
+  const installed = path.join('/home/fixture', '.local', 'bin', 'codex');
   assert.equal(
     resolveCodexExecutable({
       environment: {},
       home: '/home/fixture',
       access(candidate) {
         checked.push(candidate);
-        if (candidate.endsWith('/.local/bin/codex')) return;
+        if (candidate === installed) return;
         throw new Error('missing');
       },
     }),
-    path.join('/home/fixture', '.local', 'bin', 'codex'),
+    installed,
   );
   assert.equal(checked.length, 1);
 

src/data/adsbLolFallback.js

@@ -43,11 +43,18 @@ export function normalizeAdsbLolAircraftState(aircraft, nowSeconds) {
     .toLowerCase();
   const latitude = finiteNumber(aircraft?.lat);
   const longitude = finiteNumber(aircraft?.lon);
-  if (!hex || latitude === null || longitude === null) return null;
+  if (
+    !hex ||
+    latitude === null ||
+    longitude === null ||
+    Math.abs(latitude) > 90 ||
+    Math.abs(longitude) > 180
+  )
+    return null;
 
   const seenPosition = Math.max(
     0,
-    finiteNumber(aircraft?.seen_pos) ?? finiteNumber(aircraft?.seen) ?? 0,
+    finiteNumber(aircraft?.seen_pos) ?? finiteNumber(aircraft?.seen) ?? NaN,
   );
   const seen = Math.max(0, finiteNumber(aircraft?.seen) ?? seenPosition);
   const onGround = aircraft?.alt_baro === 'ground';
@@ -62,8 +69,10 @@ export function normalizeAdsbLolAircraftState(aircraft, nowSeconds) {
     hex,
     String(aircraft?.flight || aircraft?.r || '').trim() || null,
     null,
-    Math.max(0, nowSeconds - seenPosition),
-    Math.max(0, nowSeconds - seen),
+    Number.isFinite(seenPosition)
+      ? Math.max(0, nowSeconds - seenPosition)
+      : null,
+    Number.isFinite(seen) ? Math.max(0, nowSeconds - seen) : null,
     longitude,
     latitude,
     barometricFeet === null ? null : barometricFeet * FOOT_TO_M,
@@ -94,8 +103,28 @@ export function normalizeAdsbLolPointResponse(payload) {
       : Math.floor(
           responseNow > 10_000_000_000 ? responseNow / 1000 : responseNow,
         );
-  const states = (Array.isArray(payload?.ac) ? payload.ac : [])
-    .map((aircraft) => normalizeAdsbLolAircraftState(aircraft, nowSeconds))
-    .filter(Boolean);
-  return { time: nowSeconds, states };
+  const aircraft = Array.isArray(payload?.ac) ? payload.ac : [];
+  const states = [];
+  // Keep the OpenSky vectors unchanged. The regional fallback's extra readsb
+  // status travels alongside them, keyed only to admitted aircraft.
+  const admitted = new Set();
+  const statuses = [];
+  for (const row of aircraft) {
+    const state = normalizeAdsbLolAircraftState(row, nowSeconds);
+    if (!state) continue;
+    states.push(state);
+    // The live contract admits the first valid vector for each ICAO. Its
+    // status must come from that same row, never an invalid or later duplicate.
+    const id = state[0];
+    if (admitted.has(id)) continue;
+    admitted.add(id);
+    if (typeof row.emergency === 'string')
+      statuses.push([id, row.emergency.trim().toLowerCase()]);
+  }
+  const emergencyByIcao = Object.fromEntries(statuses);
+  return {
+    time: nowSeconds,
+    states,
+    ...(Object.keys(emergencyByIcao).length ? { emergencyByIcao } : {}),
+  };
 }

src/data/aircraftEmergency.js

@@ -0,0 +1,93 @@
+/**
+ * Transponder emergency status for one aircraft, from the Mode A squawk and
+ * the ADS-B emergency/priority field.
+ *
+ * Emergency squawks are ICAO-standard worldwide: 7500 unlawful interference,
+ * 7600 radio failure, 7700 general emergency. readsb (adsb.lol) also reports
+ * `emergency`, "a superset of the 7x00 squawks": none, general, lifeguard,
+ * minfuel, nordo, unlawful, downed, reserved. OpenSky state vectors carry the
+ * squawk only.
+ *
+ * The status is what the transponder broadcast in THIS poll, never a finding:
+ * crews pass through 7x00 codes while dialling. Highlighting follows the latest
+ * broadcast, which does not confirm an incident or its resolution.
+ */
+
+/** @constant {string} Tint for aircraft broadcasting an emergency (not a priority). */
+export const EMERGENCY_TINT_CSS = '#FF4444';
+
+const SQUAWK_KINDS = { 7500: 'unlawful', 7600: 'nordo', 7700: 'general' };
+
+const KINDS = {
+  general: { label: 'General emergency', severity: 'emergency' },
+  unlawful: { label: 'Unlawful interference', severity: 'emergency' },
+  nordo: { label: 'Radio failure', severity: 'emergency' },
+  downed: { label: 'Downed aircraft', severity: 'emergency' },
+  minfuel: { label: 'Minimum fuel', severity: 'priority' },
+  lifeguard: { label: 'Lifeguard (medical priority)', severity: 'priority' },
+};
+
+/**
+ * A Mode A code as its four octal digits, else null.
+ * @param {unknown} value
+ * @returns {string|null}
+ */
+export function normalizeSquawk(value) {
+  const code = String(value ?? '').trim();
+  return /^[0-7]{4}$/.test(code) ? code : null;
+}
+
+/**
+ * Emergency status from one observation. Higher severity wins; an ADS-B
+ * emergency wins a tie. A
+ * 7x00 squawk counts even when the ADS-B field says `none`.
+ * @param {{squawk?: unknown, emergency?: unknown}} [observation]
+ * @returns {{kind: string, label: string, severity: 'emergency'|'priority',
+ *   squawk: string|null, source: 'ads-b'|'squawk'}|null} `source` is
+ *   'squawk' when the Mode A code itself names the status (so it can be
+ *   quoted), else 'ads-b'.
+ */
+export function aircraftEmergency({ squawk, emergency } = {}) {
+  const code = normalizeSquawk(squawk);
+  const reported = String(emergency ?? '')
+    .trim()
+    .toLowerCase();
+  const fromAdsb = Object.hasOwn(KINDS, reported);
+  const squawkKind = SQUAWK_KINDS[code] ?? null;
+  const kind =
+    fromAdsb && (KINDS[reported].severity === 'emergency' || !squawkKind)
+      ? reported
+      : squawkKind;
+  if (!kind) return null;
+  return {
+    kind,
+    ...KINDS[kind],
+    squawk: code,
+    source: SQUAWK_KINDS[code] === kind ? 'squawk' : 'ads-b',
+  };
+}
+
+/**
+ * How a summary may phrase the status without flattening it into an incident:
+ * quote the code when the Mode A squawk itself names the status, otherwise
+ * attribute it to the ADS-B emergency field.
+ * @param {{kind?: string, squawk?: string|null, source?: string}|null|undefined} status
+ * @returns {string|null} e.g. 'broadcasting squawk 7700 (general emergency)'
+ *   or 'ADS-B reports general emergency'; null when there is no status.
+ */
+export function emergencyBroadcastPhrase(status) {
+  if (!status || !Object.hasOwn(KINDS, status.kind)) return null;
+  const label = KINDS[status.kind].label.toLowerCase();
+  return status.source === 'squawk' && status.squawk
+    ? `broadcasting squawk ${status.squawk} (${label})`
+    : `ADS-B reports ${label}`;
+}
+
+/**
+ * True when the aircraft is broadcasting an emergency (not a priority status).
+ * @param {{severity?: string}|null|undefined} status
+ * @returns {boolean}
+ */
+export function isEmergency(status) {
+  return status?.severity === 'emergency';
+}

src/data/aircraftEmergency.test.mjs

@@ -0,0 +1,95 @@
+// src/data/aircraftEmergency.test.mjs
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  aircraftEmergency,
+  emergencyBroadcastPhrase,
+  isEmergency,
+  normalizeSquawk,
+} from './aircraftEmergency.js';
+
+test('the three ICAO emergency squawks map to their kinds', () => {
+  assert.equal(aircraftEmergency({ squawk: '7500' }).kind, 'unlawful');
+  assert.equal(aircraftEmergency({ squawk: '7600' }).kind, 'nordo');
+  const general = aircraftEmergency({ squawk: ' 7700 ' });
+  assert.deepEqual(general, {
+    kind: 'general',
+    label: 'General emergency',
+    severity: 'emergency',
+    squawk: '7700',
+    source: 'squawk',
+  });
+});
+
+test('ordinary codes, blanks and non-octal values are not emergencies', () => {
+  for (const squawk of ['1200', '7000', '2000', '', null, undefined, '7800'])
+    assert.equal(aircraftEmergency({ squawk }), null, String(squawk));
+  assert.equal(aircraftEmergency(), null);
+  assert.equal(normalizeSquawk('7800'), null);
+  assert.equal(normalizeSquawk(7700), '7700');
+  assert.equal(normalizeSquawk('770'), null);
+});
+
+test('the ADS-B emergency field wins, and `none` defers to the squawk', () => {
+  const minfuel = aircraftEmergency({ squawk: '4521', emergency: 'MinFuel' });
+  assert.equal(minfuel.kind, 'minfuel');
+  assert.equal(minfuel.severity, 'priority');
+  assert.equal(minfuel.source, 'ads-b');
+  assert.equal(minfuel.squawk, '4521');
+  assert.equal(
+    aircraftEmergency({ squawk: '7700', emergency: 'none' }).source,
+    'squawk',
+  );
+  assert.equal(
+    aircraftEmergency({ squawk: '7700', emergency: 'general' }).source,
+    'squawk',
+    'a code that names the status stays quotable',
+  );
+  assert.equal(
+    aircraftEmergency({ squawk: '1200', emergency: 'general' }).source,
+    'ads-b',
+  );
+  assert.equal(aircraftEmergency({ emergency: 'downed' }).kind, 'downed');
+  assert.equal(aircraftEmergency({ emergency: 'none' }), null);
+  assert.equal(aircraftEmergency({ emergency: 'reserved' }), null);
+});
+
+test('priority statuses are reported but are not emergencies', () => {
+  assert.equal(isEmergency(aircraftEmergency({ squawk: '7700' })), true);
+  assert.equal(
+    isEmergency(aircraftEmergency({ emergency: 'lifeguard' })),
+    false,
+  );
+  assert.equal(isEmergency(aircraftEmergency({ emergency: 'minfuel' })), false);
+  assert.equal(isEmergency(null), false);
+});
+
+test('the broadcast phrase quotes a naming code, else attributes ADS-B', () => {
+  assert.equal(
+    emergencyBroadcastPhrase(aircraftEmergency({ squawk: '7700' })),
+    'broadcasting squawk 7700 (general emergency)',
+  );
+  assert.equal(
+    emergencyBroadcastPhrase(
+      aircraftEmergency({ squawk: '1200', emergency: 'general' }),
+    ),
+    'ADS-B reports general emergency',
+  );
+  assert.equal(
+    emergencyBroadcastPhrase(aircraftEmergency({ emergency: 'lifeguard' })),
+    'ADS-B reports lifeguard (medical priority)',
+  );
+  assert.equal(emergencyBroadcastPhrase(null), null);
+  assert.equal(emergencyBroadcastPhrase({ kind: 'reserved' }), null);
+});
+
+test('an emergency squawk outranks an ADS-B priority', () => {
+  assert.equal(
+    aircraftEmergency({ squawk: '7700', emergency: 'lifeguard' }).kind,
+    'general',
+  );
+  assert.equal(
+    aircraftEmergency({ squawk: '7500', emergency: 'minfuel' }).kind,
+    'unlawful',
+  );
+});

src/data/aircraftEmergencyAnalyst.test.mjs

@@ -0,0 +1,524 @@
+import * as Cesium from 'cesium';
+import { TRACKED_ICON_COLOR } from '../layers/military/policy.js';
+import { createRendering as civilRendering } from '../layers/flights/rendering.js';
+import { createRendering as militaryRendering } from '../layers/military/rendering.js';
+import { createMilitarySnapshotRenderer } from '../layers/military/snapshotRenderer.js';
+import { aircraftEmergency } from './aircraftEmergency.js';
+// Source-to-voice provenance, status retention/clearing, contact-time contracts,
+// and civil/military billboard, Cockpit and model tint regressions.
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { openSkySnapshot, readsbSnapshot } from '../sources/live/index.js';
+import { FlightRecords } from '../layers/flights/records.js';
+import { MilitaryFlightRecords } from '../layers/military/records.js';
+import { mapAnalystRecord as mapFlight } from './flights.js';
+import { mapAnalystRecord as mapMilitary } from './militaryFlights.js';
+import { createAnalystEngine } from './analystEngine.js';
+import { normalizeAdsbLolPointResponse } from './adsbLolFallback.js';
+import { createGevActionRunner } from '../voice/gevActions.js';
+
+const NOW_MS = 1800000000000;
+
+test('fallback status belongs to the first valid admitted aircraft row', () => {
+  const valid = { hex: 'a1b2c3', lat: 30, lon: -97, squawk: '1200' };
+  for (const status of [undefined, 'general', 'none']) {
+    const payload = normalizeAdsbLolPointResponse({
+      now: NOW_MS,
+      ac: [
+        { ...valid, lat: 100, emergency: 'general' },
+        { ...valid, emergency: status },
+        { ...valid, lat: null, emergency: 'general' },
+        { ...valid, emergency: status === 'general' ? 'none' : 'general' },
+      ],
+    });
+    const snapshot = openSkySnapshot(payload, { now: NOW_MS });
+    assert.equal(snapshot.records.length, 1);
+    assert.equal(snapshot.records[0].emergency, status);
+    assert.equal(snapshot.records[0].latitude, 30);
+  }
+});
+
+function civilStore() {
+  return new FlightRecords({
+    geoidHeight: () => 0,
+    cachedGroundFloor: () => null,
+    floorAltitudeM: (value) => value,
+    approxDistanceKm: () => 0,
+  });
+}
+const receiveContext = {
+  viewerLatDeg: null,
+  viewerLonDeg: null,
+  trackedId: null,
+  floorWarmPoints: [],
+};
+
+test('real civil fallback preserves ADS-B emergency and priority, then clears', () => {
+  const store = civilStore();
+  const aircraft = {
+    hex: 'a1b2c3',
+    flight: 'TEST1',
+    lat: 30,
+    lon: -97,
+    alt_baro: 10000,
+    gs: 150,
+    track: 90,
+    squawk: '1200',
+    seen: 3,
+    seen_pos: 1,
+  };
+  for (const [status, expectedKind, flagged] of [
+    ['general', 'general', true],
+    ['minfuel', 'minfuel', false],
+    ['none', null, false],
+  ]) {
+    const payload = normalizeAdsbLolPointResponse({
+      now: NOW_MS,
+      ac: [{ ...aircraft, emergency: status }],
+    });
+    assert.equal(
+      payload.states[0].length,
+      18,
+      'fallback vectors retain the OpenSky shape',
+    );
+    const [observation] = openSkySnapshot(payload, { now: NOW_MS }).records;
+    const result = mapFlight(
+      aircraft.hex,
+      store.receive(observation, receiveContext).meta,
+    );
+    assert.equal(result.emergency, flagged);
+    assert.equal(result.emergencyKind, expectedKind);
+    assert.equal(result.emergencySource, expectedKind ? 'ads-b' : null);
+    assert.equal(result.lastContactAtMs, NOW_MS - 3000);
+  }
+});
+
+test('changed status without contact time retains general contact, including voice projection', async () => {
+  const store = civilStore();
+  const [observation] = readsbSnapshot(
+    {
+      ac: [
+        {
+          hex: 'a1b2c3',
+          flight: 'TEST1',
+          lat: 30,
+          lon: -97,
+          alt_baro: 10000,
+          gs: 150,
+          track: 90,
+          squawk: '1200',
+          emergency: 'general',
+          seen: 3,
+          seen_pos: 1,
+        },
+      ],
+    },
+    { observedAtMs: NOW_MS, now: NOW_MS },
+  ).records;
+  store.receive(observation, receiveContext);
+  const meta = store.receive(
+    { ...observation, contactTimeMs: null, squawk: '7600', emergency: 'none' },
+    receiveContext,
+  ).meta;
+  const record = mapFlight(observation.id, meta);
+  assert.equal(record.emergencyKind, 'nordo');
+  assert.equal(record.lastContactAtMs, NOW_MS - 3000);
+  assert.equal(Object.hasOwn(record, 'observedAtMs'), false);
+  globalThis.window = globalThis.window || {
+    clearTimeout,
+    setTimeout,
+    requestIdleCallback: null,
+  };
+  const flights = {
+    id: 'flights',
+    source: 'fixture',
+    getStats: () => ({ count: 1 }),
+    getAnalystRecords: () => [record],
+  };
+  const runner = createGevActionRunner({
+    viewer: {
+      clock: { onTick: { addEventListener: () => () => {} } },
+      scene: { canvas: { addEventListener() {}, removeEventListener() {} } },
+      camera: {
+        moveEnd: { addEventListener() {} },
+        positionCartographic: {
+          height: 300000,
+          latitude: 0.52,
+          longitude: -1.71,
+        },
+      },
+    },
+    styleManager: {
+      getContextModeState: () => ({ mode: null, active: false }),
+      getCockpitState: () => ({ active: false }),
+    },
+    dataManager: {
+      layers: new Map([['flights', { module: flights }]]),
+      isEnabled: (id) => id === 'flights',
+      getAll: () => [
+        { id: 'flights', name: 'Flights', enabled: true, stats: { count: 1 } },
+      ],
+    },
+  });
+  try {
+    const result = await runner('analyst_query', {
+      layers: ['flights'],
+      scope: { kind: 'anywhere' },
+      filters: [{ field: 'emergency', op: 'eq', value: true }],
+    });
+    assert.equal(result.ok, true);
+    assert.equal(result.items[0].emergency, true);
+    assert.equal(result.items[0].lastContactAtMs, NOW_MS - 3000);
+    assert.equal(result.items[0].emergencySource, 'squawk');
+    assert.equal(
+      result.items[0].emergencyBroadcast,
+      'broadcasting squawk 7600 (radio failure)',
+    );
+    assert.equal(
+      Object.hasOwn(result.items[0], 'time'),
+      false,
+      'general contact is not a generic incident timestamp',
+    );
+  } finally {
+    runner.dispose?.();
+  }
+});
+
+// OpenSky /states/all: [icao24, callsign, origin_country, time_position,
+// last_contact, lon, lat, baro_alt, on_ground, velocity, true_track,
+// vertical_rate, sensors, geo_alt, squawk, spi, position_source, category].
+const OPENSKY = {
+  time: NOW_MS / 1000,
+  states: [
+    [
+      'a1b2c3',
+      'SWA696  ',
+      'United States',
+      NOW_MS / 1000 - 6,
+      NOW_MS / 1000 - 3,
+      -97.67,
+      30.19,
+      3000,
+      false,
+      150,
+      180,
+      -5,
+      null,
+      3040,
+      '7700',
+      false,
+      0,
+      4,
+    ],
+  ],
+};
+
+// adsb.lol /v2/mil: readsb aircraft with `seen`/`seen_pos` ages in seconds.
+const ADSB_LOL = {
+  ac: [
+    {
+      hex: 'ae01ce',
+      flight: 'RCH123  ',
+      t: 'C17',
+      lat: 31.1,
+      lon: -97.4,
+      alt_baro: 18000,
+      gs: 300,
+      track: 90,
+      squawk: '1200',
+      emergency: 'general',
+      seen: 1.5,
+      seen_pos: 2,
+    },
+  ],
+};
+
+function civilAnalystRecord() {
+  const [row] = openSkySnapshot(OPENSKY, { now: NOW_MS }).records;
+  const store = new FlightRecords({
+    geoidHeight: () => 0,
+    cachedGroundFloor: () => null,
+    floorAltitudeM: (altitude) => altitude,
+    approxDistanceKm: () => 0,
+  });
+  const { meta } = store.receive(row, {
+    viewerLatDeg: null,
+    viewerLonDeg: null,
+    trackedId: null,
+    floorWarmPoints: [],
+  });
+  return mapFlight(row.id, meta);
+}
+
+function militaryAnalystRecord() {
+  const [row] = readsbSnapshot(ADSB_LOL, {
+    observedAtMs: NOW_MS,
+    now: NOW_MS,
+  }).records;
+  const store = new MilitaryFlightRecords({
+    geoidHeight: () => 0,
+    cachedGroundFloor: () => null,
+    floorAltitudeM: (altitude) => altitude,
+  });
+  const { meta } = store.receive(row, {
+    observedAtMs: NOW_MS,
+    floorWarmPoints: [],
+    modelOwnsVisual: false,
+  });
+  return mapMilitary(row.id, meta);
+}
+
+test('OpenSky 7700 and adsb.lol emergency=general differ only in provenance', () => {
+  const civil = civilAnalystRecord();
+  const military = militaryAnalystRecord();
+
+  assert.equal(civil.emergency, true);
+  assert.equal(civil.emergencyKind, 'general');
+  assert.equal(civil.squawk, '7700');
+  assert.equal(civil.emergencySource, 'squawk');
+  assert.equal(
+    civil.emergencyBroadcast,
+    'broadcasting squawk 7700 (general emergency)',
+  );
+  assert.equal(civil.lastContactAtMs, NOW_MS - 3000, 'OpenSky last_contact');
+
+  assert.equal(military.emergency, true);
+  assert.equal(military.emergencyKind, 'general');
+  assert.equal(military.squawk, '1200', 'the code is not an emergency code');
+  assert.equal(military.emergencySource, 'ads-b');
+  assert.equal(military.emergencyBroadcast, 'ADS-B reports general emergency');
+  assert.equal(military.lastContactAtMs, NOW_MS - 1500, 'snapshot time - seen');
+});
+
+test('the analyst can filter emergencies by source', async () => {
+  const records = {
+    flights: [civilAnalystRecord()],
+    military: [militaryAnalystRecord()],
+  };
+  const engine = createAnalystEngine({
+    getRecords: (key) => records[key] || [],
+    resolveRegionRing: async () => null,
+    getViewContext: () => ({ lat: 30.5, lon: -97.5, viewRadiusKm: 500 }),
+  });
+  const query = (value) =>
+    engine.query({
+      layers: ['flights', 'military'],
+      scope: { kind: 'anywhere' },
+      filters: [
+        { field: 'emergency', op: 'eq', value: true },
+        { field: 'emergencySource', op: 'eq', value },
+      ],
+    });
+  const bySquawk = await query('squawk');
+  assert.deepEqual(
+    bySquawk.items.map((item) => [item.icao24, item.emergencyBroadcast]),
+    [['a1b2c3', 'broadcasting squawk 7700 (general emergency)']],
+  );
+  const byAdsb = await query('ads-b');
+  assert.deepEqual(
+    byAdsb.items.map((item) => [item.icao24, item.emergencyBroadcast]),
+    [['ae01ce', 'ADS-B reports general emergency']],
+  );
+});
+
+test('military status changes retain only the latest known general contact', () => {
+  const store = new MilitaryFlightRecords({
+    geoidHeight: () => 0,
+    cachedGroundFloor: () => null,
+    floorAltitudeM: (v) => v,
+  });
+  const [observation] = readsbSnapshot(ADSB_LOL, {
+    observedAtMs: NOW_MS,
+    now: NOW_MS,
+  }).records;
+  const context = {
+    observedAtMs: NOW_MS,
+    floorWarmPoints: [],
+    modelOwnsVisual: false,
+  };
+  const unknown = mapMilitary(
+    observation.id,
+    store.receive({ ...observation, contactTimeMs: null }, context).meta,
+  );
+  assert.equal(unknown.lastContactAtMs, null);
+  store.receive(observation, context);
+  const changed = mapMilitary(
+    observation.id,
+    store.receive(
+      {
+        ...observation,
+        contactTimeMs: null,
+        squawk: '7600',
+        emergency: 'none',
+      },
+      context,
+    ).meta,
+  );
+  assert.equal(changed.emergencyKind, 'nordo');
+  assert.equal(changed.lastContactAtMs, NOW_MS - 1500);
+});
+
+test('fallback missing contact age retains known contact through the real converter', () => {
+  const store = civilStore();
+  const row = {
+    hex: 'a1b2c3',
+    lat: 30,
+    lon: -97,
+    squawk: '1200',
+    emergency: 'general',
+    seen: 3,
+    seen_pos: 1,
+  };
+  const receive = (row) =>
+    store.receive(
+      openSkySnapshot(
+        normalizeAdsbLolPointResponse({ now: NOW_MS, ac: [row] }),
+        { now: NOW_MS },
+      ).records[0],
+      receiveContext,
+    ).meta;
+  const first = receive(row);
+  const second = receive({ ...row, seen: undefined, seen_pos: undefined });
+  assert.equal(second.lastContactEpochMs, first.lastContactEpochMs);
+});
+
+test('one omitted ADS-B status poll is retained; explicit none and changed squawk clear immediately', () => {
+  const store = civilStore();
+  const row = {
+    hex: 'a1b2c3',
+    lat: 30,
+    lon: -97,
+    squawk: '1200',
+    emergency: 'general',
+    seen: 3,
+  };
+  const receive = (row) =>
+    store.receive(
+      openSkySnapshot(
+        normalizeAdsbLolPointResponse({ now: NOW_MS, ac: [row] }),
+        { now: NOW_MS },
+      ).records[0],
+      receiveContext,
+    ).meta;
+  assert.equal(receive(row).emergency.kind, 'general');
+  assert.equal(
+    receive({ ...row, emergency: undefined }).emergency?.kind,
+    'general',
+  );
+  assert.equal(receive({ ...row, emergency: undefined }).emergency, null);
+  receive(row);
+  assert.equal(receive({ ...row, emergency: 'none' }).emergency, null);
+  receive(row);
+  assert.equal(
+    receive({ ...row, emergency: undefined, squawk: '2000' }).emergency,
+    null,
+  );
+});
+
+function renderHarness(factory) {
+  const flightState = { records: { data: new Map() }, _trackedIcao: null };
+  const rendering = factory({
+    flightState,
+    services: {
+      militaryRegistry: { isMilitaryIcao: (id) => id === 'mil' },
+      aircraftPresentation: {},
+      camera: {},
+      focus: {},
+      recession: {},
+    },
+    parts: {},
+  });
+  return { flightState, rendering };
+}
+
+test('tint priorities cover normal, priority, emergency, tracking and Cockpit dots', () => {
+  for (const factory of [civilRendering, militaryRendering]) {
+    const { flightState, rendering } = renderHarness(factory);
+    const normal = rendering._fleetBillboardColor('civil', {});
+    assert.equal(
+      rendering._fleetBillboardColor('civil', {
+        emergency: aircraftEmergency({ emergency: 'minfuel' }),
+      }),
+      normal,
+    );
+    const red = rendering._fleetBillboardColor('civil', {
+      emergency: aircraftEmergency({ squawk: '7700' }),
+    });
+    assert.ok(red.red > 0.9 && red.green < 0.5);
+    flightState.records.data.set('civil', {
+      emergency: aircraftEmergency({ squawk: '7700' }),
+    });
+    assert.equal(rendering._modelColor('civil'), red);
+    if (rendering._cockpitContactColor)
+      assert.equal(rendering._cockpitContactColor('civil'), red);
+    flightState._trackedIcao = 'civil';
+    assert.equal(
+      rendering._modelColor('civil'),
+      factory === civilRendering ? Cesium.Color.CYAN : TRACKED_ICON_COLOR,
+    );
+    flightState._trackedIcao = null;
+    flightState.records.data.set('civil', { emergency: null });
+    assert.equal(rendering._modelColor('civil'), normal);
+  }
+});
+
+test('GERMAN: an existing untracked military billboard repaints each poll without alpha loss', () => {
+  const { flightState, rendering } = renderHarness(militaryRendering);
+  const bb = {
+    color: rendering._fleetBillboardColor('abc123').withAlpha(0.65),
+  };
+  Object.assign(flightState, {
+    _billboards: new Map([['abc123', bb]]),
+    _models: new Map(),
+    _positionHistory: new Map(),
+    _cullPositions: new Map(),
+    _groundSnap: { forget() {} },
+    _cockpitContactMode: false,
+  });
+  const records = new MilitaryFlightRecords({
+    geoidHeight: () => 0,
+    cachedGroundFloor: () => null,
+    floorAltitudeM: (value) => value,
+  });
+  flightState.records = records;
+  const apply = createMilitarySnapshotRenderer({
+    flightState,
+    records,
+    groundFloor: { warmGroundFloor() {}, cachedGroundFloor: () => null },
+    meshFloor: { sampleMeshFloorCells() {} },
+    militaryRegistry: { registerMilitaryIcaos() {} },
+    rendering: {
+      ...rendering,
+      _syncModelToClass() {},
+      _applyFleetBillboardPresentation() {},
+    },
+    motion: {},
+    tracking: {},
+    queries: {},
+  });
+  for (const [emergency, red] of [
+    ['general', true],
+    ['none', false],
+    ['general', true],
+  ]) {
+    const snapshot = readsbSnapshot(
+      {
+        ac: [
+          {
+            hex: 'abc123',
+            lat: 30,
+            lon: -97,
+            alt_baro: 10000,
+            squawk: '1200',
+            emergency,
+            seen_pos: 1,
+          },
+        ],
+      },
+      { observedAtMs: NOW_MS },
+    );
+    apply(snapshot, {});
+    assert.equal(bb.color.green < 0.5, red);
+    assert.equal(bb.color.alpha, 0.65);
+  }
+});

src/data/aircraftRecession.js

@@ -242,7 +242,7 @@ export function applyAircraftBillboardTreatment({
 }
 
 /**
- * Apply the already-composed aircraft alpha to an ambient glTF model without
+ * Apply layer-owned hue and composed aircraft alpha to an ambient glTF model without
  * disturbing Cesium's existing MIX/colorBlendAmount presentation semantics.
  * @param {object} input
  * @param {object} input.model
@@ -261,7 +261,10 @@ export function applyAircraftModelTreatment({
   if (!model || !baseColor || !Number.isFinite(alpha)) return 0;
   if (
     Number.isFinite(model.color?.alpha) &&
-    Math.abs(model.color.alpha - alpha) <= tuning.writeEpsilon
+    Math.abs(model.color.alpha - alpha) <= tuning.writeEpsilon &&
+    model.color.red === baseColor.red &&
+    model.color.green === baseColor.green &&
+    model.color.blue === baseColor.blue
   )
     return 0;
   model.color = baseColor.withAlpha(alpha);

src/data/aircraftRecession.test.mjs

@@ -142,3 +142,15 @@ test('ambient model presentation receives composed alpha without changing blend
   assert.equal(model.colorBlendAmount, 0.9);
   assert.equal(applyAircraftModelTreatment({ model, baseColor: color, alpha: 0.2, params }), 0);
 });
+
+
+test('model hue changes at constant alpha, then clears without redundant writes', () => {
+  const color = (red,green,blue) => ({red,green,blue,withAlpha(alpha){return {red,green,blue,alpha};}});
+  const model = {color:color(1,1,1).withAlpha(0.65)};
+  assert.equal(applyAircraftModelTreatment({model,baseColor:color(1,0.2,0.2),alpha:0.65}),1);
+  assert.equal(model.color.green,0.2);
+  assert.equal(model.color.alpha,0.65);
+  assert.equal(applyAircraftModelTreatment({model,baseColor:color(1,0.2,0.2),alpha:0.65}),0);
+  assert.equal(applyAircraftModelTreatment({model,baseColor:color(1,1,1),alpha:0.65}),1);
+  assert.equal(model.color.green,1);
+});

src/data/ambiguous-camera-direction.test.mjs

@@ -0,0 +1,30 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { directionToHeading } from './directionText.js';
+test('conflicting facing directions cannot manufacture one heading', () => {
+  for (const bare of [false, true]) {
+    for (const value of ['NB / SB', 'EASTBOUND WESTBOUND', 'NE SW'])
+      assert.ok(Number.isNaN(directionToHeading(value, bare)), value);
+    assert.equal(directionToHeading('NB northbound', bare), 0);
+    assert.equal(directionToHeading('IH-35 SOUTHBOUND AT 15TH', bare), 180);
+  }
+  assert.ok(Number.isNaN(directionToHeading('North / East', true)));
+  assert.equal(directionToHeading('West / SR-24', true), 270);
+});
+
+test('travel tokens retain precedence over quadrant streets and bare words', () => {
+  for (const [text, heading] of [
+    ['I-5 NB at NE 45th St', 0],
+    ['SR 520 EB at NE 148th', 90],
+    ['US 13 SB @ SW Front St', 180],
+  ]) {
+    for (const bare of [false, true])
+      assert.equal(directionToHeading(text, bare), heading);
+  }
+  assert.equal(
+    directionToHeading('Hwy 401 east of Keele St - Westbound', true),
+    270,
+  );
+  assert.equal(directionToHeading('NE near West St', true), 45);
+  assert.ok(Number.isNaN(directionToHeading('NB SB near NE St', true)));
+});

src/data/cameraFraming.js

@@ -0,0 +1,15 @@
+import * as Cesium from 'cesium';
+
+/** Camera range with breathing room in both viewport dimensions. */
+export function rangeForBoundingSphere(viewer, radius) {
+  const frustum = viewer.camera?.frustum;
+  const verticalFov = Number(frustum?.fov) || Cesium.Math.toRadians(60);
+  const aspectRatio = Math.max(0.5, Number(frustum?.aspectRatio) || 1);
+  const horizontalFov = 2 * Math.atan(Math.tan(verticalFov / 2) * aspectRatio);
+  const limitingFov = Math.min(verticalFov, horizontalFov);
+  // Target 57% sphere occupancy so perspective still leaves at least 40%
+  // measured roof-to-base breathing room in ordinary oblique building views.
+  const occupiedViewportFraction = 0.57;
+  const desiredAngularRadius = (limitingFov * occupiedViewportFraction) / 2;
+  return (radius / Math.sin(desiredAngularRadius)) * 1.05;
+}

src/data/cctvNyc.test.mjs

@@ -0,0 +1,391 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+
+import {
+  loadNycSourcesFromOpenData,
+  nycCameraIsOnline,
+  nycCameraName,
+  nycCameraToSource,
+} from '../../server/providers/cctv/sources.js';
+import {
+  DEFAULT_CCTV_MAX_SOURCES,
+  DEFAULT_NYC_MAX_SOURCES,
+  NYC_CAMERAS_URL,
+  NYC_GROUND_ELEVATION_M,
+  NYC_IMAGE_ORIGIN,
+  NYC_IMAGE_URL,
+  NYC_MAX_CATALOG_BYTES,
+} from '../../server/providers/cctv/constants.js';
+import {
+  CAMERA_CODE_MAX_CHARS,
+  isLikelyNycCoordinate,
+} from '../../server/providers/cctv/normalize.js';
+import { createCctvCatalog } from '../../server/providers/cctv/catalog.js';
+
+/**
+ * A response whose body is a live stream, plus a flag that flips when the
+ * stream is cancelled. A rejection path that returns without cancelling holds
+ * the transport open, so the flag is what the refusal tests actually assert.
+ */
+const streamingResponse = (init = {}) => {
+  const state = { cancelled: false };
+  const body = new ReadableStream({
+    start(controller) {
+      controller.enqueue(new TextEncoder().encode('['));
+    },
+    cancel() {
+      state.cancelled = true;
+    },
+  });
+  return { response: new Response(body, init), state };
+};
+
+const MIDTOWN_ID = '8a6bc417-4877-4ebe-8052-88c1b261baf1';
+const BROOKLYN_ID = '11111111-2222-3333-4444-555555555555';
+
+/** One TMC camera row, shaped like the live `webcams.nyctmc.org` payload. */
+const row = (overrides = {}) => ({
+  id: MIDTOWN_ID,
+  name: 'Central Park West @ 86 St',
+  latitude: 40.785302,
+  longitude: -73.969353,
+  area: 'Manhattan',
+  isOnline: 'true',
+  imageUrl: NYC_IMAGE_URL(MIDTOWN_ID),
+  ...overrides,
+});
+
+test('a NYC row maps to a source on the pinned HTTPS frame host', () => {
+  const source = nycCameraToSource(row());
+  assert.equal(source.id, `nyc-${MIDTOWN_ID}`);
+  assert.equal(source.name, 'Central Park West @ 86 St');
+  assert.equal(source.city, 'Manhattan');
+  assert.equal(source.cityId, 'nyc');
+  assert.equal(source.provider, 'NYC DOT Traffic Management Center');
+  assert.equal(source.lat, 40.785302);
+  assert.equal(source.lon, -73.969353);
+  assert.equal(source.feedType, 'image');
+  assert.equal(source.sourceKind, 'nyc-dot-tmc');
+  assert.equal(
+    source.license,
+    'Public NYC DOT Traffic Management Center traffic camera',
+  );
+  assert.equal(source.groundElevationM, NYC_GROUND_ELEVATION_M);
+  assert.equal(source.url, NYC_IMAGE_URL(MIDTOWN_ID));
+  assert.equal(source.url, source.snapshotUrl);
+  assert.ok(source.url.startsWith(NYC_IMAGE_ORIGIN));
+  assert.equal(source.headingConfidence, 'low');
+  assert.ok(Number.isFinite(source.headingDeg));
+});
+
+test('frame URLs are synthesized from the UUID; the payload URL is ignored', () => {
+  const source = nycCameraToSource(
+    row({ imageUrl: 'https://evil.example/cameras/x/image' }),
+  );
+  assert.equal(source.url, NYC_IMAGE_URL(MIDTOWN_ID));
+  assert.equal(source.snapshotUrl, source.url);
+});
+
+test('offline cameras, off-city geometry and unusable ids are dropped', () => {
+  assert.equal(nycCameraToSource(row({ isOnline: 'false' })), null);
+  assert.equal(nycCameraToSource(row({ isOnline: false })), null);
+  assert.equal(
+    nycCameraToSource(row({ isOnline: 'TRUE' })).id,
+    `nyc-${MIDTOWN_ID}`,
+  );
+  assert.equal(
+    nycCameraToSource(row({ isOnline: true })).id,
+    `nyc-${MIDTOWN_ID}`,
+  );
+  // Austin: a plausible lat/lon, but not a New York camera.
+  assert.equal(
+    nycCameraToSource(row({ latitude: 30.2672, longitude: -97.7431 })),
+    null,
+  );
+  assert.equal(nycCameraToSource(row({ latitude: 0, longitude: 0 })), null);
+  assert.equal(nycCameraToSource(row({ id: '../etc/passwd' })), null);
+  assert.equal(nycCameraToSource(row({ id: 'not-a-uuid' })), null);
+  assert.equal(nycCameraToSource(row({ id: `${MIDTOWN_ID}/../x` })), null);
+  assert.equal(nycCameraToSource(null), null);
+});
+
+test('ids lower-case the UUID and unknown boroughs fall back to New York', () => {
+  const mixed = nycCameraToSource(
+    row({ id: MIDTOWN_ID.toUpperCase(), area: 'Long Island' }),
+  );
+  assert.equal(mixed.id, `nyc-${MIDTOWN_ID}`);
+  assert.equal(mixed.city, 'New York');
+  assert.equal(
+    mixed.url,
+    NYC_IMAGE_URL(MIDTOWN_ID.toUpperCase()),
+    'the registered frame path keeps the catalog UUID spelling',
+  );
+});
+
+test('a nameless row still gets a label', () => {
+  assert.equal(
+    nycCameraName({ name: '  FDR Drive @ 23 St ' }, 'nyc-x'),
+    'FDR Drive @ 23 St',
+  );
+  assert.equal(nycCameraName({}, `nyc-${MIDTOWN_ID}`), 'NYC Camera 8a6bc417');
+  assert.equal(nycCameraIsOnline('true'), true);
+  assert.equal(nycCameraIsOnline('false'), false);
+});
+
+test('the unselected label is the intersection, trimmed to the code width', () => {
+  assert.equal(nycCameraToSource(row()).code, 'CENTRAL PARK WEST @ 86 ST');
+  const long = nycCameraToSource(
+    row({
+      name: 'Brooklyn Queens Expressway @ Atlantic Avenue / Flatbush Avenue Extension',
+    }),
+  );
+  assert.ok(long.code.length <= CAMERA_CODE_MAX_CHARS);
+  assert.ok(long.code.endsWith('…'));
+  assert.ok(long.code.startsWith('BROOKLYN'));
+});
+
+test('the loader reads the keyless catalog and collapses duplicate ids', async (t) => {
+  t.mock.method(console, 'log', () => {});
+  const requested = [];
+  t.mock.method(globalThis, 'fetch', async (url, init) => {
+    requested.push([String(url), init.redirect]);
+    return Response.json([
+      row({ latitude: 40.758, longitude: -73.9855 }),
+      row({
+        name: 'Central Park West @ 86 St (duplicate)',
+        latitude: 40.758,
+        longitude: -73.9855,
+      }),
+      row({
+        id: BROOKLYN_ID,
+        name: 'Atlantic Ave @ Flatbush Ave',
+        latitude: 40.65,
+        longitude: -73.96,
+        area: 'Brooklyn',
+        imageUrl: NYC_IMAGE_URL(BROOKLYN_ID),
+      }),
+      row({ isOnline: 'false', name: 'Offline camera' }),
+      row({ id: 'https://evil.example/x' }),
+    ]);
+  });
+  const cameras = await loadNycSourcesFromOpenData();
+  assert.deepEqual(requested, [[NYC_CAMERAS_URL, 'manual']]);
+  assert.deepEqual(
+    cameras.map((camera) => camera.id),
+    // Nearest to a borough anchor first: the Times Square camera before Brooklyn.
+    [`nyc-${MIDTOWN_ID}`, `nyc-${BROOKLYN_ID}`],
+  );
+  assert.equal(cameras[0].name, 'Central Park West @ 86 St');
+  assert.equal(cameras[1].city, 'Brooklyn');
+});
+
+test('an upstream failure yields an empty pack and releases the response', async (t) => {
+  t.mock.method(console, 'warn', () => {});
+  const failed = streamingResponse({ status: 503 });
+  t.mock.method(globalThis, 'fetch', async () => failed.response);
+  assert.deepEqual(await loadNycSourcesFromOpenData(), []);
+  assert.equal(failed.state.cancelled, true, 'the failed body is cancelled');
+
+  t.mock.restoreAll();
+  t.mock.method(console, 'warn', () => {});
+  t.mock.method(globalThis, 'fetch', async () => {
+    throw new Error('network down');
+  });
+  assert.deepEqual(await loadNycSourcesFromOpenData(), []);
+});
+
+test('the catalog fetch refuses redirects and oversized bodies', async (t) => {
+  t.mock.method(console, 'warn', () => {});
+  const seen = [];
+  const redirected = streamingResponse({
+    status: 302,
+    headers: { location: 'https://evil.example/cameras.json' },
+  });
+  t.mock.method(globalThis, 'fetch', async (url, init) => {
+    seen.push([String(url), init.redirect]);
+    return redirected.response;
+  });
+  assert.deepEqual(await loadNycSourcesFromOpenData(), []);
+  assert.deepEqual(seen, [[NYC_CAMERAS_URL, 'manual']]);
+  assert.equal(
+    redirected.state.cancelled,
+    true,
+    'the redirect body is cancelled',
+  );
+
+  t.mock.restoreAll();
+  t.mock.method(console, 'warn', () => {});
+  t.mock.method(globalThis, 'fetch', async () => {
+    const body = JSON.stringify([row()]);
+    return new Response(body, {
+      headers: {
+        'Content-Type': 'application/json',
+        'content-length': String(NYC_MAX_CATALOG_BYTES + 1),
+      },
+    });
+  });
+  assert.deepEqual(await loadNycSourcesFromOpenData(), []);
+
+  t.mock.restoreAll();
+  t.mock.method(console, 'warn', () => {});
+  t.mock.method(globalThis, 'fetch', async () => {
+    const oversized = 'x'.repeat(NYC_MAX_CATALOG_BYTES + 1024);
+    return new Response(
+      new ReadableStream({
+        start(controller) {
+          controller.enqueue(new TextEncoder().encode(oversized));
+          controller.close();
+        },
+      }),
+      { headers: { 'Content-Type': 'application/json' } },
+    );
+  });
+  assert.deepEqual(await loadNycSourcesFromOpenData(), []);
+});
+
+test('a reduced pack cap keeps cameras nearest the borough anchors', async (t) => {
+  t.mock.method(console, 'log', () => {});
+  const saved = process.env.CCTV_NYC_MAX_SOURCES;
+  t.after(() => {
+    if (saved === undefined) delete process.env.CCTV_NYC_MAX_SOURCES;
+    else process.env.CCTV_NYC_MAX_SOURCES = saved;
+  });
+  process.env.CCTV_NYC_MAX_SOURCES = '8';
+  const rows = [
+    // Far southern Staten Island, listed first so only distance can keep them.
+    ...[40.5, 40.505, 40.51, 40.515, 40.52, 40.525].map((lat, i) =>
+      row({
+        id: `aaaaaaaa-bbbb-cccc-dddd-${String(i).padStart(12, '0')}`,
+        latitude: lat,
+        longitude: -74.24,
+        area: 'Staten Island',
+        name: `SI ${i}`,
+      }),
+    ),
+    ...[40.758, 40.757, 40.756, 40.755, 40.754, 40.753].map((lat, i) =>
+      row({
+        id: `bbbbbbbb-cccc-dddd-eeee-${String(i).padStart(12, '0')}`,
+        latitude: lat,
+        longitude: -73.9855,
+        area: 'Manhattan',
+        name: `Midtown ${i}`,
+      }),
+    ),
+  ];
+  t.mock.method(globalThis, 'fetch', async () => Response.json(rows));
+  const cameras = await loadNycSourcesFromOpenData();
+  assert.equal(cameras.length, 8);
+  assert.deepEqual(
+    cameras.map((camera) => camera.city),
+    [
+      'Manhattan',
+      'Manhattan',
+      'Manhattan',
+      'Manhattan',
+      'Manhattan',
+      'Manhattan',
+      'Staten Island',
+      'Staten Island',
+    ],
+    'Midtown fills first; the Staten Island anchor still keeps a share',
+  );
+});
+
+/**
+ * Serve the NYC catalog to the NYC endpoint and an empty payload to every
+ * other pack, so one catalog refresh exercises the registration without
+ * reaching the network.
+ */
+const runCatalogWithMockedUpstreams = async (t) => {
+  const requested = [];
+  t.mock.method(console, 'log', () => {});
+  t.mock.method(console, 'warn', () => {});
+  t.mock.method(globalThis, 'fetch', async (url) => {
+    const href = String(url);
+    requested.push(href);
+    if (href === NYC_CAMERAS_URL) {
+      return Response.json([
+        row({ latitude: 40.758, longitude: -73.9855 }),
+        row({
+          id: BROOKLYN_ID,
+          name: 'Atlantic Ave @ Flatbush Ave',
+          latitude: 40.65,
+          longitude: -73.96,
+          area: 'Brooklyn',
+        }),
+      ]);
+    }
+    return Response.json([]);
+  });
+  const sources = await createCctvCatalog({ sourceRoot: '/nonexistent' })();
+  return { requested, sources };
+};
+
+/** Run one catalog refresh with CCTV_NYC_ENABLED set to `flag` (undefined
+ * leaves it unset), restoring the environment afterwards. */
+const runCatalogWithNycFlag = async (t, flag) => {
+  const saved = { ...process.env };
+  try {
+    delete process.env.CCTV_SOURCES_FILE;
+    delete process.env.CCTV_SOURCES_JSON;
+    if (flag === undefined) delete process.env.CCTV_NYC_ENABLED;
+    else process.env.CCTV_NYC_ENABLED = flag;
+    return await runCatalogWithMockedUpstreams(t);
+  } finally {
+    for (const key of Object.keys(process.env)) {
+      if (!(key in saved)) delete process.env[key];
+    }
+    Object.assign(process.env, saved);
+  }
+};
+
+test('CCTV_NYC_ENABLED=1 wires the NYC lane into the catalog', async (t) => {
+  const { requested, sources } = await runCatalogWithNycFlag(t, '1');
+  assert.ok(
+    requested.includes(NYC_CAMERAS_URL),
+    'the catalog refresh invokes the NYC loader',
+  );
+  assert.deepEqual(
+    sources.filter((s) => s.cityId === 'nyc').map((s) => s.id),
+    [`nyc-${MIDTOWN_ID}`, `nyc-${BROOKLYN_ID}`],
+    'NYC cameras reach the served catalog through the registered lane',
+  );
+});
+
+// NYC DOT requires a data-sharing agreement for this feed, so an install that
+// has not opted in must never contact it.
+for (const [label, flag] of [
+  ['an unset CCTV_NYC_ENABLED', undefined],
+  ['an empty CCTV_NYC_ENABLED', ''],
+  ['CCTV_NYC_ENABLED=0', '0'],
+  ['CCTV_NYC_ENABLED=true', 'true'],
+]) {
+  test(`${label} makes no NYC request`, async (t) => {
+    const { requested, sources } = await runCatalogWithNycFlag(t, flag);
+    assert.ok(requested.length > 0, 'the other packs still refreshed');
+    assert.equal(
+      requested.some((href) => href.includes('nyctmc.org')),
+      false,
+      'the lane never reaches its upstream',
+    );
+    assert.deepEqual(
+      sources.filter((s) => s.cityId === 'nyc'),
+      [],
+    );
+  });
+}
+
+test('the shipped catalog ceiling is not raised to make room for this pack', () => {
+  assert.equal(DEFAULT_CCTV_MAX_SOURCES, 4000);
+  assert.equal(DEFAULT_NYC_MAX_SOURCES, 250);
+});
+
+test('isLikelyNycCoordinate spans the five boroughs and rejects the rest', () => {
+  assert.equal(isLikelyNycCoordinate(40.758, -73.9855), true); // Times Square
+  assert.equal(isLikelyNycCoordinate(40.5795, -74.1502), true); // Staten Island
+  assert.equal(isLikelyNycCoordinate(40.8448, -73.8648), true); // Bronx
+  assert.equal(isLikelyNycCoordinate(40.5077, -74.2304), true); // southern SI slack
+  assert.equal(isLikelyNycCoordinate(30.2672, -97.7431), false); // Austin
+  assert.equal(isLikelyNycCoordinate(0, 0), false);
+  assert.equal(isLikelyNycCoordinate(NaN, -73.98), false);
+});

src/data/dataCredits.js

@@ -91,6 +91,13 @@ export function hideOsmCredit(viewer, owner) {
   return true;
 }
 
+/** NYC DOT asks every application that uses its data to carry this
+ * disclaimer verbatim (nyc.gov/html/dot/html/about/datafeeds.shtml). */
+export const NYC_DOT_DISCLAIMER =
+  'This application may contain and/or utilize information which was originally compiled by the New York City Department of Transportation (NYC DOT) for governmental purposes; the information may subsequently been modified by entity/entities other than NYC DOT. ' +
+  'NYC DOT and the City of New York make no representation as to the accuracy or usefulness of the information provided by this application or the information's suitability for any purpose and disclaim any liability for omissions or errors that may be contained therein. ' +
+  'The public is advised to observe posted signage for compliance with applicable laws and regulations.';
+
 export const DATA_CREDITS = [
   // ── Live sources ────────────────────────────────────────────────
   {
@@ -104,7 +111,7 @@ export const DATA_CREDITS = [
   {
     key: 'adsblol',
     html:
-      'Military flights, aircraft traces & bounded regional flight fallback: ' +
+      'Military flights, aircraft traces, bounded regional flight fallback & GNSS navigation integrity: ' +
       '<a href="https://adsb.lol" target="_blank" rel="noopener">adsb.lol</a> ' +
       '(ODbL 1.0)',
   },
@@ -247,10 +254,37 @@ export const DATA_CREDITS = [
       '<a href="https://data.norge.no/nlod/en/2.0" target="_blank" rel="noopener">Norwegian licence for Open Government data (NLOD)</a> ' +
       'distributed by Statens vegvesen',
   },
+  {
+    key: 'nyc-cctv',
+    html:
+      'CCTV cameras &amp; frames (New York City, when enabled): ' +
+      '<a href="https://webcams.nyctmc.org/" target="_blank" rel="noopener">NYC DOT Traffic Management Center</a>. ' +
+      NYC_DOT_DISCLAIMER,
+  },
   {
     key: 'gbfs',
     html: 'Bikeshare availability: GBFS operator feeds (e.g. Austin BCycle)',
   },
+  {
+    key: 'urbansharing-gbfs',
+    html:
+      'City bikes (Norway): contains data under the ' +
+      '<a href="https://data.norge.no/nlod/en/2.0" target="_blank" rel="noopener">Norwegian licence for Open Government data (NLOD)</a> ' +
+      'made available by Oslo Bysykkel, Bergen Bysykkel and Trondheim Bysykkel',
+  },
+  {
+    key: 'entur-mobility-gbfs',
+    html:
+      'City bikes (Stavanger, Skien/Porsgrunn): contains data under the ' +
+      '<a href="https://data.norge.no/nlod/en/2.0" target="_blank" rel="noopener">Norwegian licence for Open Government data (NLOD)</a> ' +
+      'made available by Entur (Kolumbus Bysykkel, Farte Bysykkel)',
+  },
+  {
+    key: 'jcdecaux-gbfs',
+    html:
+      'City bikes (Lillestrøm): Bysykkel Lillestrøm, JCDecaux — ' +
+      '<a href="https://developer.jcdecaux.com/files/Open-Licence-fr.pdf" target="_blank" rel="noopener">Licence Ouverte</a>',
+  },
   {
     key: 'osrm-routing',
     // The service asks for its attribution to carry a "fix the map" link, so

src/data/dataCredits.test.mjs

@@ -1,6 +1,6 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
-import { DATA_CREDITS } from './dataCredits.js';
+import { DATA_CREDITS, NYC_DOT_DISCLAIMER } from './dataCredits.js';
 
 test('every credit carries a unique key and some markup to render', () => {
   const keys = DATA_CREDITS.map((entry) => entry.key);
@@ -120,3 +120,11 @@ test('tile attribution follows source changes and viewers have independent owner
   assert.equal(a.credits.size, 0);
   assert.equal(b.credits.size, 1);
 });
+
+test('the NYC camera credit carries NYC DOT’s requested disclaimer', () => {
+  const credit = DATA_CREDITS.find((entry) => entry.key === 'nyc-cctv');
+  assert.ok(credit, 'NYC DOT camera frames must be credited');
+  assert.ok(credit.html.includes(NYC_DOT_DISCLAIMER));
+  assert.match(credit.html, /make no representation as to the accuracy/);
+  assert.match(credit.html, /observe posted signage/);
+});

src/data/directionText.js

@@ -28,22 +28,34 @@ export function directionToHeading(value, allowBare = false) {
     .trim()
     .toUpperCase();
   if (!text) return NaN;
-  // Explicit travel/intercardinal forms — safe on free-form text (a street
-  // name almost never contains "NORTHBOUND" or a lone "NB" token).
-  if (/\bNORTHBOUND\b|\bNB\b/.test(text)) return 0;
-  if (/\bSOUTHBOUND\b|\bSB\b/.test(text)) return 180;
-  if (/\bEASTBOUND\b|\bEB\b/.test(text)) return 90;
-  if (/\bWESTBOUND\b|\bWB\b/.test(text)) return 270;
-  if (/\bNORTHEAST\b|\bNE\b/.test(text)) return 45;
-  if (/\bNORTHWEST\b|\bNW\b/.test(text)) return 315;
-  if (/\bSOUTHEAST\b|\bSE\b/.test(text)) return 135;
-  if (/\bSOUTHWEST\b|\bSW\b/.test(text)) return 225;
-  // Bare cardinals — dedicated direction fields only.
-  if (allowBare) {
-    if (/\bNORTH\b/.test(text)) return 0;
-    if (/\bSOUTH\b/.test(text)) return 180;
-    if (/\bEAST\b/.test(text)) return 90;
-    if (/\bWEST\b/.test(text)) return 270;
+  const tiers = [
+    [
+      [/\bNORTHBOUND\b|\bNB\b/, 0],
+      [/\bSOUTHBOUND\b|\bSB\b/, 180],
+      [/\bEASTBOUND\b|\bEB\b/, 90],
+      [/\bWESTBOUND\b|\bWB\b/, 270],
+    ],
+    [
+      [/\bNORTHEAST\b|\bNE\b/, 45],
+      [/\bNORTHWEST\b|\bNW\b/, 315],
+      [/\bSOUTHEAST\b|\bSE\b/, 135],
+      [/\bSOUTHWEST\b|\bSW\b/, 225],
+    ],
+  ];
+  if (allowBare)
+    tiers.push([
+      [/\bNORTH\b/, 0],
+      [/\bSOUTH\b/, 180],
+      [/\bEAST\b/, 90],
+      [/\bWEST\b/, 270],
+    ]);
+  for (const forms of tiers) {
+    const headings = new Set();
+    for (const [pattern, heading] of forms) {
+      if (pattern.test(text)) headings.add(heading);
+    }
+    if (headings.size)
+      return headings.size === 1 ? headings.values().next().value : NaN;
   }
   return NaN;
 }

src/data/firms-calendar-validity.test.mjs

@@ -0,0 +1,23 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { acquisitionMsUtc } from './firmsCsv.js';
+test('FIRMS acquisition dates cannot roll into a different calendar day', () => {
+  for (const [date, time] of [
+    ['2026-02-30', '1200'],
+    ['2026-04-31', '1200'],
+    ['2026-13-01', '1200'],
+    ['2026-07-16junk', '1200'],
+    ['2026-07-16', '2400'],
+    ['2026-07-16', '1260'],
+    ['2026-07-16', null],
+    ['2026-07-16', ''],
+  ]) {
+    assert.ok(Number.isNaN(acquisitionMsUtc(date, time)), `${date}:${time}`);
+  }
+  for (const [date, time, expected] of [
+    ['2024-02-29', '45', Date.UTC(2024, 1, 29, 0, 45)],
+    ['2026-07-16', '0', Date.UTC(2026, 6, 16)],
+  ]) {
+    assert.equal(acquisitionMsUtc(date, time), expected);
+  }
+});

src/data/firms-coordinate-evidence.test.mjs

@@ -0,0 +1,69 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { parseFirmsCsv } from './firmsCsv.js';
+import { adaptFirmsRecords } from './firmsAdapt.js';
+test('missing positions do not become fire detections at zero coordinates', () => {
+  const csv =
+    'latitude,longitude,acq_date,acq_time,confidence,frp\n,1,2026-07-16,1200,n,1\n1, ,2026-07-16,1200,n,1\n95,1,2026-07-16,1200,n,1\n1,181,2026-07-16,1200,n,1\n0,0,2026-07-16,1200,n,1\n-90,-180,2026-07-16,1200,n,1';
+  assert.deepEqual(
+    parseFirmsCsv(csv).map((r) => [r.lat, r.lon]),
+    [
+      [0, 0],
+      [-90, -180],
+    ],
+  );
+  const records = [
+    { lat: null, lon: 1 },
+    { lat: '', lon: 1 },
+    { lat: false, lon: 1 },
+    { lat: 95, lon: 1 },
+    { lat: 1, lon: 181 },
+    { lat: '0', lon: 0 },
+    { lat: -90, lon: -180 },
+  ];
+  assert.deepEqual(
+    adaptFirmsRecords(records).map((r) => [r.index, r.lat, r.lon]),
+    [
+      [0, 0, 0],
+      [1, -90, -180],
+    ],
+  );
+});
+
+test('both axes keep their exact bounds and drop values just past them', () => {
+  const row = (lat, lon) => `${lat},${lon},2026-07-16,1200,n,1`;
+  const csv = [
+    'latitude,longitude,acq_date,acq_time,confidence,frp',
+    row(90, 180),
+    row(-90, -180),
+    row(90.000001, 0),
+    row(-90.000001, 0),
+    row(0, 180.000001),
+    row(0, -180.000001),
+    row(' ', 5),
+    row(5, '\t'),
+  ].join('\n');
+  assert.deepEqual(
+    parseFirmsCsv(csv).map((r) => [r.lat, r.lon]),
+    [
+      [90, 180],
+      [-90, -180],
+    ],
+  );
+  const kept = adaptFirmsRecords([
+    { lat: 90, lon: 180 },
+    { lat: '-90', lon: '-180' },
+    { lat: -90.000001, lon: 0 },
+    { lat: 0, lon: -180.000001 },
+    { lat: 5, lon: ' ' },
+    { lat: 5, lon: undefined },
+    { lat: [5], lon: 5 },
+  ]);
+  assert.deepEqual(
+    kept.map((r) => [r.lat, r.lon]),
+    [
+      [90, 180],
+      [-90, -180],
+    ],
+  );
+});

src/data/firmsAdapt.js

@@ -7,8 +7,8 @@
  */
 
 /**
- * Map proxy fire records into internal fire records. Records with
- * non-finite coordinates are skipped; `index` is the post-skip position
+ * Map proxy fire records into internal fire records. Records with missing,
+ * non-numeric or out-of-range (WGS84) coordinates are skipped; `index` is the post-skip position
  * (it keys pick ids and context-store ids, so it must stay sequential).
  * `contextEntity`/`position` start null and are lazily filled by the layer.
  * @param {?Array<Object>} records - /api/firms `fires` array.
@@ -21,7 +21,15 @@ export function adaptFirmsRecords(records) {
   for (const record of records) {
     const lat = Number(record?.lat);
     const lon = Number(record?.lon);
-    if (!Number.isFinite(lat) || !Number.isFinite(lon)) continue;
+    if (
+      !hasCoordinateValue(record?.lat) ||
+      !hasCoordinateValue(record?.lon) ||
+      !Number.isFinite(lat) ||
+      !Number.isFinite(lon) ||
+      Math.abs(lat) > 90 ||
+      Math.abs(lon) > 180
+    )
+      continue;
     fires.push({
       index: fires.length,
       lat,
@@ -110,3 +118,11 @@ function finiteNumber(value) {
   const number = Number(value);
   return Number.isFinite(number) ? number : 0;
 }
+
+// Same rule as parseFirmsCsv: a blank or non-numeric value is not a zero.
+function hasCoordinateValue(value) {
+  return (
+    typeof value === 'number' ||
+    (typeof value === 'string' && value.trim() !== '')
+  );
+}

src/data/firmsCsv.js

@@ -105,7 +105,17 @@ export function parseFirmsCsv(text) {
     if (parts.length < header.length) continue; // malformed row — skip
     const lat = Number(parts[iLat]);
     const lon = Number(parts[iLon]);
-    if (!Number.isFinite(lat) || !Number.isFinite(lon)) continue;
+    // Blank or out-of-range positions are dropped, never read as 0 (see
+    // hasCoordinateValue in firmsAdapt.js for the proxy-record side).
+    if (
+      !parts[iLat].trim() ||
+      !parts[iLon].trim() ||
+      !Number.isFinite(lat) ||
+      !Number.isFinite(lon) ||
+      Math.abs(lat) > 90 ||
+      Math.abs(lon) > 180
+    )
+      continue;
 
     records.push({
       lat,
@@ -153,7 +163,13 @@ export function acquisitionMsUtc(acqDate, acqTime) {
     minutes > 59
   )
     return NaN;
-  return Date.UTC(year, month - 1, day, hours, minutes);
+  const ms = Date.UTC(year, month - 1, day, hours, minutes);
+  const parsed = new Date(ms);
+  return parsed.getUTCFullYear() === year &&
+    parsed.getUTCMonth() === month - 1 &&
+    parsed.getUTCDate() === day
+    ? ms
+    : NaN;
 }
 
 /**

src/data/flights.test.mjs

@@ -79,6 +79,12 @@ test('flights analyst record: full record maps every contract field', () => {
     aircraftClass: 'airliner',
     originCountry: 'United States',
     operator: 'Southwest Airlines',
+    squawk: null,
+    emergency: false,
+    emergencyKind: null,
+    emergencySource: null,
+    emergencyBroadcast: null,
+    lastContactAtMs: null,
     routeOrigin: 'AUS',
     routeDestination: 'LAX',
   });

src/data/gbfsProxy.test.mjs

@@ -1,6 +1,7 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import {
+  GBFS_CLIENT_IDENTIFIER,
   GBFS_MAX_BODY_BYTES,
   fetchGbfsUpstream,
 } from '../../server/providers/gbfs.js';
@@ -56,6 +57,41 @@ test('GBFS upstream fetch passes a direct 200 through unchanged', async () => {
   });
 });
 
+test('GBFS upstream fetch names the app in the Client-Identifier header', async () => {
+  let observedHeaders = null;
+  await fetchGbfsUpstream(
+    'https://gbfs.urbansharing.com/oslobysykkel.no/station_status.json',
+    {
+      fetchImpl: async (_url, options) => {
+        observedHeaders = options.headers;
+        return new Response(STATION_BODY, { status: 200 });
+      },
+    },
+  );
+  assert.equal(GBFS_CLIENT_IDENTIFIER, 'gods-eye-view');
+  assert.equal(observedHeaders['Client-Identifier'], GBFS_CLIENT_IDENTIFIER);
+});
+
+test('GBFS upstream fetch adds ET-Client-Name for Entur and only for Entur', async () => {
+  const headersFor = async (url) => {
+    let observed = null;
+    await fetchGbfsUpstream(url, {
+      fetchImpl: async (_url, options) => {
+        observed = options.headers;
+        return new Response(STATION_BODY, { status: 200 });
+      },
+    });
+    return observed;
+  };
+  const entur = await headersFor(
+    'https://api.entur.io/mobility/v2/gbfs/v2/kolumbusbysykkel/station_status',
+  );
+  assert.equal(entur['ET-Client-Name'], 'gods-eye-view-bikeshare');
+  assert.equal(entur['Client-Identifier'], GBFS_CLIENT_IDENTIFIER);
+  const lyft = await headersFor(STATION_URL);
+  assert.equal(lyft['ET-Client-Name'], undefined);
+});
+
 test('GBFS upstream fetch forwards a non-redirect error status for the middleware to relay', async () => {
   const result = await fetchGbfsUpstream(STATION_URL, {
     fetchImpl: async () => new Response(null, { status: 404 }),

src/data/gbfsSource.js

@@ -8,6 +8,31 @@ const GBFS_ALLOWED_HOSTS = new Set([
   'austin.publicbikesystem.net',
   'hon.publicbikesystem.net',
   'chat.publicbikesystem.net',
+  'gbfs.urbansharing.com',
+  'api.entur.io',
+  'api.cyclocity.fr',
+]);
+
+/**
+ * Hosts that serve more than GBFS keep the proxy to their GBFS tree: Entur's
+ * api.entur.io fronts every Entur API, and api.cyclocity.fr every JCDecaux
+ * contract endpoint.
+ */
+const GBFS_HOST_PATH_PREFIXES = new Map([
+  ['api.entur.io', '/mobility/v2/gbfs/'],
+  ['api.cyclocity.fr', '/contracts/'],
+]);
+
+/**
+ * Identifying headers an operator asks every GBFS client to send. Entur rate
+ * limits or blocks consumers that do not send ET-Client-Name, in the form
+ * "company-application".
+ */
+const GBFS_HOST_HEADERS = new Map([
+  [
+    'api.entur.io',
+    Object.freeze({ 'ET-Client-Name': 'gods-eye-view-bikeshare' }),
+  ],
 ]);
 
 /**
@@ -28,13 +53,40 @@ export function isAllowedGbfsHost(hostname) {
 }
 
 /**
- * Only allow station_information.json and station_status.json endpoints.
+ * Only allow station_information and station_status endpoints. The `.json`
+ * suffix is optional because Entur serves its feeds without one. When a
+ * hostname is given and that host serves more than GBFS, the path must also
+ * sit under the host's GBFS prefix.
  *
  * @param {string} pathname
+ * @param {string} [hostname]
  * @returns {boolean}
  */
-export function isAllowedGbfsPath(pathname) {
-  return /\/station_(information|status)\.json$/i.test(String(pathname || ''));
+export function isAllowedGbfsPath(pathname, hostname = '') {
+  const path = String(pathname || '');
+  if (!/\/station_(information|status)(\.json)?$/i.test(path)) return false;
+  const prefix = GBFS_HOST_PATH_PREFIXES.get(
+    String(hostname || '')
+      .trim()
+      .toLowerCase(),
+  );
+  return !prefix || path.startsWith(prefix);
+}
+
+/**
+ * Extra request headers an upstream GBFS host asks clients to send.
+ *
+ * @param {string} hostname
+ * @returns {Record<string, string>}
+ */
+export function gbfsUpstreamHeaders(hostname) {
+  return (
+    GBFS_HOST_HEADERS.get(
+      String(hostname || '')
+        .trim()
+        .toLowerCase(),
+    ) || {}
+  );
 }
 
 /**
@@ -47,7 +99,7 @@ export function isAllowedGbfsPath(pathname) {
  * @returns {string} Cache-Control header value.
  */
 export function gbfsCacheControl(pathname) {
-  if (/\/station_information\.json$/i.test(String(pathname || ''))) {
+  if (/\/station_information(\.json)?$/i.test(String(pathname || ''))) {
     return 'public, max-age=300';
   }
   return 'no-store';

src/data/geoImportImages.js

@@ -0,0 +1,74 @@
+// Inspect encoded headers before allowing the browser to decode local images.
+export const MAX_IMPORT_IMAGE_PIXELS = 16 * 1024 * 1024;
+const MAX_SIDE = 8192;
+
+/** Width and height from a supported raster header; no image is decoded. */
+export function importImageSize(bytes) {
+  const v = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
+  const ascii = (at, n) => String.fromCharCode(...bytes.subarray(at, at + n));
+  const u24 = (at) => bytes[at] | (bytes[at + 1] << 8) | (bytes[at + 2] << 16);
+  if (
+    bytes.length >= 24 &&
+    v.getUint32(0) === 0x89504e47 &&
+    ascii(12, 4) === 'IHDR'
+  )
+    return [v.getUint32(16), v.getUint32(20)];
+  if (bytes.length >= 10 && /^GIF8[79]a$/.test(ascii(0, 6)))
+    return [v.getUint16(6, true), v.getUint16(8, true)];
+  if (bytes.length >= 26 && ascii(0, 2) === 'BM') {
+    if (v.getUint32(14, true) === 12)
+      return [v.getUint16(18, true), v.getUint16(20, true)];
+    return [Math.abs(v.getInt32(18, true)), Math.abs(v.getInt32(22, true))];
+  }
+  if (bytes.length >= 30 && ascii(0, 4) === 'RIFF' && ascii(8, 4) === 'WEBP') {
+    const kind = ascii(12, 4);
+    if (kind === 'VP8X') return [1 + u24(24), 1 + u24(27)];
+    if (kind === 'VP8 ' && u24(23) === 0x2a019d)
+      return [v.getUint16(26, true) & 0x3fff, v.getUint16(28, true) & 0x3fff];
+    if (kind === 'VP8L' && bytes[20] === 0x2f) {
+      const bits = v.getUint32(21, true);
+      return [(bits & 0x3fff) + 1, ((bits >>> 14) & 0x3fff) + 1];
+    }
+  }
+  if (bytes.length >= 4 && v.getUint16(0) === 0xffd8) {
+    for (let at = 2; at + 4 <= bytes.length;) {
+      if (bytes[at++] !== 0xff) break;
+      while (bytes[at] === 0xff) at++;
+      const marker = bytes[at++];
+      if (marker === 0xd9 || marker === 0xda) break;
+      if (marker === 1 || (marker >= 0xd0 && marker <= 0xd7)) continue;
+      const length = v.getUint16(at);
+      if (length < 2 || at + length > bytes.length) break;
+      if (
+        [
+          0xc0, 0xc1, 0xc2, 0xc3, 0xc5, 0xc6, 0xc7, 0xc9, 0xca, 0xcb, 0xcd,
+          0xce, 0xcf,
+        ].includes(marker) &&
+        length >= 8
+      )
+        return [v.getUint16(at + 5), v.getUint16(at + 3)];
+      at += length;
+    }
+  }
+  return null;
+}
+
+/** Charge each distinct encoded image once against the file's decoded budget. */
+export function createImportImageBudget() {
+  const seen = new Set();
+  let pixels = 0;
+  return (key, bytes) => {
+    if (seen.has(key)) return;
+    const size = importImageSize(bytes);
+    if (
+      !size ||
+      size.some((n) => !Number.isInteger(n) || n <= 0 || n > MAX_SIDE) ||
+      pixels + size[0] * size[1] > MAX_IMPORT_IMAGE_PIXELS
+    )
+      throw new Error(
+        'Local images exceed the decoded image limit or have an unreadable header.',
+      );
+    pixels += size[0] * size[1];
+    seen.add(key);
+  };
+}

src/data/geoImportPins.js

@@ -0,0 +1,128 @@
+import * as Cesium from 'cesium';
+
+const STYLE = [
+  'image',
+  'scale',
+  'rotation',
+  'alignedAxis',
+  'horizontalOrigin',
+  'verticalOrigin',
+  'color',
+  'eyeOffset',
+  'pixelOffset',
+  'width',
+  'height',
+  'scaleByDistance',
+  'translucencyByDistance',
+  'pixelOffsetScaleByDistance',
+  'distanceDisplayCondition',
+  'sizeInMeters',
+  'disableDepthTestDistance',
+  'imageSubRegion',
+];
+
+class ImportedBillboards extends Cesium.BillboardCollection {
+  update(frameState) {
+    // Height queries should find the map, never another imported marker.
+    // Ordinary click picks and rendered screenshots still include the pins.
+    if (frameState.passes.pick && frameState.passes.offscreen) return;
+    super.update(frameState);
+  }
+}
+
+/** Own static imported pins without a per-frame Entity visualizer walk. */
+export function createImportedPins(dataSource, viewer) {
+  const all = dataSource.entities.values.slice();
+  const now = Cesium.JulianDate.now();
+  const pins = all.filter((entity) => entity.billboard && entity.position);
+  if (!pins.length) return { mount() {}, sync() {}, destroy() {} };
+  const collection = new ImportedBillboards({ scene: viewer.scene });
+  const billboards = [];
+  try {
+    for (const entity of pins) {
+      const position = entity.position.getValue(now);
+      if (
+        !position ||
+        ![position.x, position.y, position.z].every(Number.isFinite)
+      )
+        throw new Error('Invalid imported point position.');
+      const options = {
+        id: entity,
+        position,
+        show:
+          entity.isShowing && entity.billboard.show?.getValue(now) !== false,
+        heightReference: Cesium.HeightReference.NONE,
+      };
+      for (const key of STYLE) {
+        const value = entity.billboard[key]?.getValue(now);
+        if (value !== undefined) options[key] = value;
+      }
+      billboards.push(collection.add(options));
+    }
+  } catch (error) {
+    collection.destroy();
+    throw error;
+  }
+  // Rebuild once before the source is added to DataSourceDisplay. Removing
+  // one entity at a time would itself make this transition quadratic.
+  dataSource.entities.suspendEvents();
+  try {
+    dataSource.entities.removeAll();
+    for (const entity of all)
+      if (!entity.billboard || !entity.position)
+        dataSource.entities.add(entity);
+  } finally {
+    dataSource.entities.resumeEvents();
+  }
+  Object.defineProperty(dataSource, 'importedEntities', {
+    value: all,
+    configurable: true,
+  });
+  Object.defineProperty(dataSource, 'importedBillboards', {
+    value: collection,
+    configurable: true,
+  });
+  let show = dataSource.show,
+    mounted = false,
+    destroyed = false;
+  Object.defineProperty(dataSource, 'show', {
+    configurable: true,
+    get: () => show,
+    set(value) {
+      show = Boolean(value);
+      dataSource.entities.show = show;
+      collection.show = show;
+    },
+  });
+  collection.show = show;
+  return {
+    mount() {
+      if (destroyed || mounted) return;
+      viewer.scene.primitives?.add(collection);
+      mounted = true;
+    },
+    sync() {
+      if (destroyed) return;
+      for (let i = 0; i < pins.length; i++) {
+        billboards[i].position = pins[i].position.getValue(now);
+        billboards[i].show =
+          pins[i].isShowing && pins[i].billboard.show?.getValue(now) !== false;
+      }
+      viewer.scene.requestRender?.();
+    },
+    destroy() {
+      if (destroyed) return;
+      destroyed = true;
+      if (viewer.trackedEntity && pins.includes(viewer.trackedEntity))
+        viewer.trackedEntity = undefined;
+      if (viewer.selectedEntity && pins.includes(viewer.selectedEntity))
+        viewer.selectedEntity = undefined;
+      if (mounted && !viewer.scene.primitives?.isDestroyed?.())
+        viewer.scene.primitives?.remove(collection);
+      if (!collection.isDestroyed()) collection.destroy();
+      all.length = 0;
+      pins.length = 0;
+      billboards.length = 0;
+    },
+  };
+}

src/data/gnssIntegrityProxy.test.mjs

@@ -0,0 +1,429 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  gnssIntegrityAnchor,
+  gnssIntegrityProxy,
+  gnssRetryCooldownMs,
+} from '../../server/providers/gnssIntegrity.js';
+
+const snapshot = {
+  now: 4_000_000_000_000,
+  ac: [
+    {
+      hex: '4ca7b5',
+      type: 'adsb_icao',
+      version: 2,
+      alt_baro: 36000,
+      lat: 50.1,
+      lon: 19.9,
+      nic: 0,
+      nac_p: 0,
+      seen_pos: 1,
+      flight: 'RYR1AB  ',
+      r: 'EI-ABC',
+    },
+    { hex: '000001', type: 'mlat', lat: 50, lon: 20, nic: 0, nac_p: 0 },
+  ],
+};
+
+function install(options = {}, hook = 'configureServer') {
+  let handler;
+  const plugin = gnssIntegrityProxy({ monotonicNow: options.now, ...options });
+  assert.equal(plugin.name, 'gnss-integrity');
+  plugin[hook]({
+    middlewares: {
+      use(path, callback) {
+        assert.equal(path, '/api/gnss-integrity');
+        handler = callback;
+      },
+    },
+  });
+  return async (url = '/?lat=50&lon=20', method = 'GET', peer = 'local') => {
+    const res = {
+      writeHead(status, headers) {
+        this.status = status;
+        this.headers = headers;
+      },
+      end(body) {
+        this.body = JSON.parse(body);
+      },
+    };
+    await handler({ url, method, socket: { remoteAddress: peer } }, res);
+    return res;
+  };
+}
+
+test('anchors snap to whole degrees and reject missing or out-of-range values', () => {
+  assert.deepEqual(gnssIntegrityAnchor('/?lat=50.44&lon=19.51'), {
+    lat: 50,
+    lon: 20,
+  });
+  assert.equal(gnssIntegrityAnchor('/?lat=91&lon=0'), null);
+  assert.equal(gnssIntegrityAnchor('/?lat=0&lon=-181'), null);
+  assert.equal(gnssIntegrityAnchor('/?lat=0'), null);
+  assert.equal(gnssIntegrityAnchor('/?lat=abc&lon=1'), null);
+});
+
+for (const hook of ['configureServer', 'configurePreviewServer']) {
+  test(`${hook}: fetches the fixed adsb.lol origin and returns only integrity facts`, async () => {
+    const calls = [];
+    const request = install(
+      {
+        now: () => 1234,
+        fetchImpl: async (url, options) => {
+          calls.push(url);
+          assert.ok(options.signal instanceof AbortSignal);
+          assert.equal(options.redirect, 'error');
+          return Response.json(snapshot);
+        },
+      },
+      hook,
+    );
+    const res = await request(
+      '/?lat=50.2&lon=19.8&url=https://invalid.example',
+    );
+    assert.equal(res.status, 200);
+    assert.deepEqual(calls, ['https://api.adsb.lol/v2/lat/50/lon/20/dist/250']);
+    assert.deepEqual(res.body, {
+      fetchedAt: 1234,
+      ageMs: 0,
+      anchor: { lat: 50, lon: 20 },
+      radiusNm: 250,
+      classifier: 'gev-nic-nacp-v2',
+      rows: [
+        {
+          hex: '4ca7b5',
+          lat: 50.1,
+          lon: 19.9,
+          nic: 0,
+          nacp: 0,
+          gpsLost: false,
+          degraded: true,
+        },
+      ],
+    });
+    assert.equal(res.headers['Cache-Control'], 'no-store');
+  });
+}
+
+test('snapshots are cached per anchor and concurrent reads share one upstream call', async () => {
+  let clock = 0;
+  let calls = 0;
+  const request = install({
+    now: () => clock,
+    fetchImpl: async () => {
+      calls += 1;
+      return Response.json(snapshot);
+    },
+  });
+  await Promise.all([request(), request('/?lat=50.3&lon=20.2')]);
+  assert.equal(calls, 1);
+  clock = 59_000;
+  const cached = await request();
+  assert.equal(calls, 1);
+  assert.equal(cached.body.fetchedAt, 0);
+  assert.equal(
+    cached.body.ageMs,
+    59_000,
+    'a cached answer reports its age on the server clock',
+  );
+  clock = 61_000;
+  await request();
+  assert.equal(calls, 2);
+  await request('/?lat=10&lon=10');
+  assert.equal(calls, 3);
+});
+
+test('an upstream failure serves the last snapshot as stale, else 502', async () => {
+  let clock = 0;
+  let fail = false;
+  const request = install({
+    now: () => clock,
+    fetchImpl: async () =>
+      fail ? new Response('down', { status: 503 }) : Response.json(snapshot),
+  });
+  await request();
+  fail = true;
+  clock = 120_000;
+  const stale = await request();
+  assert.equal(stale.status, 200);
+  assert.equal(stale.body.stale, true);
+  assert.equal(
+    stale.body.fetchedAt,
+    0,
+    'a stale answer keeps the time it was observed',
+  );
+  assert.equal(stale.body.ageMs, 120_000);
+  assert.equal(stale.headers['X-Data-Stale'], 'true');
+  const missing = await request('/?lat=-10&lon=-10');
+  assert.equal(missing.status, 502);
+  assert.deepEqual(missing.body, { error: 'gnss_integrity_unavailable' });
+});
+
+test('a stale snapshot older than the layer window is no longer served', async () => {
+  let clock = 0;
+  let fail = false;
+  const request = install({
+    now: () => clock,
+    fetchImpl: async () =>
+      fail ? new Response('down', { status: 503 }) : Response.json(snapshot),
+  });
+  await request();
+  fail = true;
+  clock = 30 * 60_000;
+  assert.equal((await request()).status, 200);
+  clock = 30 * 60_000 + 1;
+  const expired = await request();
+  assert.equal(expired.status, 502);
+  assert.deepEqual(expired.body, { error: 'gnss_integrity_unavailable' });
+});
+
+test('an upstream 429 starts a cooldown with no further upstream calls', async () => {
+  let clock = 0;
+  let calls = 0;
+  const request = install({
+    now: () => clock,
+    fetchImpl: async () => {
+      calls += 1;
+      return new Response('slow down', {
+        status: 429,
+        headers: { 'retry-after': '90' },
+      });
+    },
+  });
+  const first = await request();
+  assert.equal(first.status, 429);
+  assert.equal(first.headers['Retry-After'], '90');
+  clock = 30_500;
+  const cooling = await request('/?lat=1&lon=1');
+  assert.equal(cooling.status, 429);
+  // The browser is told the remaining shared cooldown, rounded up.
+  assert.equal(cooling.headers['Retry-After'], '60');
+  assert.equal(calls, 1);
+  clock = 91_000;
+  await request('/?lat=2&lon=2');
+  assert.equal(calls, 2);
+});
+
+test('Retry-After accepts sane seconds or HTTP dates up to one hour', () => {
+  const nowMs = Date.parse('2026-09-29T12:00:00Z');
+  assert.equal(gnssRetryCooldownMs('30', nowMs), 30_000);
+  assert.equal(gnssRetryCooldownMs('1', nowMs), 5_000);
+  assert.equal(gnssRetryCooldownMs('3600', nowMs), 3_600_000);
+  assert.equal(
+    gnssRetryCooldownMs('Tue, 29 Sep 2026 13:00:00 GMT', nowMs),
+    3_600_000,
+  );
+  assert.equal(gnssRetryCooldownMs('1e309', nowMs), 60_000);
+  assert.equal(
+    gnssRetryCooldownMs('Tue, 29 Sep 2026 12:00:45 GMT', nowMs),
+    45_000,
+  );
+  // Garbage, a past date or no header fall back to the default minute.
+  assert.equal(gnssRetryCooldownMs('soon', nowMs), 60_000);
+  assert.equal(
+    gnssRetryCooldownMs('Tue, 29 Sep 2026 11:00:00 GMT', nowMs),
+    60_000,
+  );
+  assert.equal(gnssRetryCooldownMs(null, nowMs), 60_000);
+});
+
+test('overlapping 429s preserve the longest shared deadline', async () => {
+  let clock = 0,
+    calls = 0;
+  const pending = [];
+  const request = install({
+    now: () => clock,
+    fetchImpl: () => {
+      calls += 1;
+      return new Promise((resolve) => pending.push(resolve));
+    },
+  });
+  const long = request('/?lat=1&lon=0'),
+    short = request('/?lat=2&lon=0');
+  await new Promise((resolve) => setImmediate(resolve));
+  pending[0](
+    new Response('', { status: 429, headers: { 'Retry-After': '3600' } }),
+  );
+  assert.equal((await long).headers['Retry-After'], '3600');
+  clock = 1000;
+  pending[1](
+    new Response('', { status: 429, headers: { 'Retry-After': '5' } }),
+  );
+  assert.equal((await short).headers['Retry-After'], '3599');
+  clock = 7000;
+  assert.equal((await request('/?lat=3&lon=0')).status, 429);
+  assert.equal(calls, 2);
+  clock = 3_600_001;
+  const resumed = request('/?lat=3&lon=0');
+  await new Promise((resolve) => setImmediate(resolve));
+  pending[2](Response.json(snapshot));
+  assert.equal((await resumed).status, 200);
+  assert.equal(calls, 3);
+});
+
+test('a cached anchor keeps serving its last snapshot as stale during a cooldown', async () => {
+  let clock = 0;
+  let limited = false;
+  let calls = 0;
+  const request = install({
+    now: () => clock,
+    fetchImpl: async () => {
+      calls += 1;
+      return limited
+        ? new Response('slow down', { status: 429 })
+        : Response.json(snapshot);
+    },
+  });
+  await request();
+  limited = true;
+  clock = 61_000;
+  // Another anchor trips the shared cooldown…
+  assert.equal((await request('/?lat=5&lon=5')).status, 429);
+  clock = 62_000;
+  // …and the cached anchor is answered from cache without an upstream call.
+  const stale = await request();
+  assert.equal(stale.status, 200);
+  assert.equal(stale.body.stale, true);
+  assert.equal(stale.body.rows.length, 1);
+  assert.equal(calls, 2);
+});
+
+test('an oversized upstream body is refused as 502 without being parsed', async () => {
+  const request = install({
+    fetchImpl: async () =>
+      new Response('{}', {
+        headers: { 'content-length': String(9 * 1024 * 1024) },
+      }),
+  });
+  const res = await request();
+  assert.equal(res.status, 502);
+  assert.deepEqual(res.body, { error: 'gnss_integrity_unavailable' });
+});
+
+test('the route rejects other methods, paths, bad anchors, a malformed feed and floods', async () => {
+  const request = install({
+    fetchImpl: async () => Response.json({ nope: true }),
+  });
+  assert.equal((await request('/', 'POST')).status, 405);
+  assert.equal((await request('/other?lat=1&lon=1')).status, 404);
+  assert.equal((await request('/?lat=1')).status, 400);
+  assert.equal((await request('/?lat=1&lon=1')).status, 502);
+  const flood = install({ fetchImpl: async () => Response.json(snapshot) });
+  let limited = 0;
+  for (let i = 0; i < 40; i += 1)
+    if ((await flood(`/?lat=${i}&lon=1`, 'GET', 'flood')).status === 429)
+      limited += 1;
+  assert.ok(limited > 0);
+});
+
+test('GERMAN: pathological retry deadlines are bounded', () => {
+  const at = Date.parse('2026-10-14T12:00:00Z');
+  assert.ok(gnssRetryCooldownMs('1e305', at) <= 3600000);
+  assert.equal(gnssRetryCooldownMs('9999999999999999999999', at), 3600000);
+  assert.equal(
+    gnssRetryCooldownMs('Wed, 14 Oct 2099 12:00:00 GMT', at),
+    3600000,
+  );
+  assert.equal(gnssRetryCooldownMs('0x10', at), 60000);
+});
+
+test('GERMAN: 5xx, network timeouts and malformed JSON share a short cooldown', async () => {
+  for (const fail of [
+    async () => new Response('', { status: 503 }),
+    async () => {
+      throw new DOMException('timeout', 'TimeoutError');
+    },
+    async () => new Response('bad JSON'),
+  ]) {
+    let clock = 0,
+      calls = 0;
+    const request = install({
+      now: () => clock,
+      fetchImpl: async () => {
+        calls++;
+        return fail();
+      },
+    });
+    assert.equal((await request()).status, 502);
+    clock = 14000;
+    assert.equal((await request('/?lat=1&lon=1')).status, 502);
+    assert.equal(calls, 1);
+    clock = 15001;
+    await request('/?lat=2&lon=2');
+    assert.equal(calls, 2);
+  }
+});
+
+test('GERMAN: source timestamp dates evidence; frozen old snapshots are rejected', async () => {
+  const now = 1800000000000;
+  const request = install({
+    now: () => now,
+    fetchImpl: async () =>
+      Response.json({ ...snapshot, now: (now - 120000) / 1000 }),
+  });
+  const res = await request();
+  assert.equal(res.body.ageMs, 120000);
+  assert.equal(res.body.stale, true);
+  for (const sourceNow of [(now - 1800001) / 1000, undefined, NaN]) {
+    const missing = install({
+      now: () => now,
+      fetchImpl: async () => Response.json({ ...snapshot, now: sourceNow }),
+    });
+    assert.equal((await missing()).status, 502);
+  }
+});
+
+test('GERMAN: cache age and cooldown remain stable across a wall-clock rollback', async () => {
+  let wall = 1800000000000,
+    mono = 0,
+    calls = 0;
+  const request = install({
+    now: () => wall,
+    monotonicNow: () => mono,
+    fetchImpl: async () => {
+      calls++;
+      return calls === 1
+        ? Response.json({ ...snapshot, now: wall / 1000 })
+        : new Response('', { status: 429, headers: { 'Retry-After': '60' } });
+    },
+  });
+  await request();
+  wall -= 3600000;
+  mono = 61000;
+  const stale = await request();
+  assert.equal(stale.body.ageMs, 61000);
+  assert.equal(stale.body.stale, true);
+  mono += 1000;
+  assert.equal((await request('/?lat=1&lon=1')).headers['Retry-After'], '59');
+  assert.equal(calls, 2);
+});
+
+test('GERMAN: cache hits and coalesced reads do not consume upstream admission', async () => {
+  let calls = 0;
+  const request = install({
+    now: () => 1800000000000,
+    fetchImpl: async () => {
+      calls++;
+      return Response.json(snapshot);
+    },
+  });
+  for (let i = 0; i < 100; i++) assert.equal((await request()).status, 200);
+  assert.equal((await request('/?lat=1&lon=1')).status, 200);
+  assert.equal(calls, 2);
+});
+
+test('GERMAN: distinct concurrent upstream reads are bounded', async () => {
+  const pending = [];
+  const request = install({
+    fetchImpl: () => new Promise((resolve) => pending.push(resolve)),
+  });
+  const jobs = Array.from({ length: 30 }, (_, i) =>
+    request(`/?lat=${i}&lon=1`),
+  );
+  await new Promise((resolve) => setImmediate(resolve));
+  assert.ok(pending.length <= 8);
+  pending.forEach((resolve) => resolve(Response.json(snapshot)));
+  const results = await Promise.all(jobs);
+  assert.ok(results.some((result) => result.status === 429));
+});

src/data/installationProxy.test.mjs

@@ -26,6 +26,7 @@ import {
   validMilitaryInstallationBox,
   writeMilitaryInstallationDisk,
 } from '../../vite.config.js';
+import { resolveOverpassUpstreamTag } from '../../server/providers/overpass/constants.js';
 
 const DAY_MS = 86_400_000;
 test('installation failure reasons disclose no raw upstream error and do not guess overload', () => {
@@ -274,3 +275,30 @@ test('an unwritable cache directory degrades to a miss instead of throwing', asy
     await fsp.rm(dir, { recursive: true, force: true });
   }
 });
+
+test('an installation entry is not served after OVERPASS_UPSTREAMS is repointed', async (t) => {
+  const prior = process.env.OVERPASS_UPSTREAMS;
+  t.after(() => {
+    if (prior === undefined) delete process.env.OVERPASS_UPSTREAMS;
+    else process.env.OVERPASS_UPSTREAMS = prior;
+  });
+  const dir = tempCacheDir();
+  const key = '30.250,-97.750,30.300,-97.700';
+  try {
+    process.env.OVERPASS_UPSTREAMS = 'https://a.example/api/interpreter,https://b.example/api/interpreter';
+    const tag = resolveOverpassUpstreamTag();
+    await writeMilitaryInstallationDisk(key, { ...entry(Date.now()), upstreams: tag }, dir);
+    assert.ok(await readMilitaryInstallationDisk(key, TTL_MS, dir), 'its own entry is a hit');
+    process.env.OVERPASS_UPSTREAMS = 'https://b.example/api/interpreter,https://a.example/api/interpreter';
+    assert.equal(resolveOverpassUpstreamTag(), tag, 'reordering the same instances keeps the tag');
+    process.env.OVERPASS_UPSTREAMS = 'https://c.example/api/interpreter';
+    assert.equal(await readMilitaryInstallationDisk(key, TTL_MS, dir), null, 'fresh read refused');
+    assert.equal(await readMilitaryInstallationDisk(key, Infinity, dir), null, 'stale read refused');
+    await writeMilitaryInstallationDisk('legacy', entry(Date.now()), dir);
+    assert.equal(await readMilitaryInstallationDisk('legacy', Infinity, dir), null, 'untagged entry refused');
+    delete process.env.OVERPASS_UPSTREAMS;
+    assert.ok(await readMilitaryInstallationDisk(key, Infinity, dir), 'nothing configured accepts any entry');
+  } finally {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+});

src/data/layerState.js

@@ -296,6 +296,24 @@ function imageryPinOption(key, token) {
   });
 }
 
+function satelliteFilterOption() {
+  const percentage = boundedIntegerOption('infrared', 'i', 100, {
+    min: 0,
+    max: 100,
+  });
+  return Object.freeze({
+    ...percentage,
+    normalize: (value) =>
+      value === 'filtered'
+        ? 100
+        : value === 'full'
+          ? 0
+          : percentage.normalize(value),
+    decode: (value) =>
+      value === 'f' ? 100 : value === 'a' ? 0 : percentage.decode(value),
+  });
+}
+
 const OPTION_GROUPS = Object.freeze({
   traffic: Object.freeze([
     enumOption('roadMode', 'r', null, ['tomtom', 'osm', 'hybrid'], {
@@ -317,10 +335,7 @@ const OPTION_GROUPS = Object.freeze({
     }),
   ]),
   'weather-satellite': Object.freeze([
-    enumOption('infrared', 'i', 'filtered', ['filtered', 'full'], {
-      filtered: 'f',
-      full: 'a',
-    }),
+    satelliteFilterOption(),
     enumOption('opacity', 'o', 'strong', ['light', 'strong'], {
       light: 'l',
       strong: 's',
@@ -607,6 +622,11 @@ export const LAYER_STATE_REGISTRY = Object.freeze([
     disposition: 'enabled+options',
     optionOwner: 'flights',
   }),
+  Object.freeze({
+    id: 'gnss-integrity',
+    token: '3',
+    disposition: 'enabled-only',
+  }),
   Object.freeze({ id: 'local-dams', token: 'q', disposition: 'enabled-only' }),
   Object.freeze({
     id: 'local-datacenters',

src/data/layerState.test.mjs

@@ -202,8 +202,8 @@ function encode(state) {
 
 test('production registry is exact, canonical, and rejects incomplete contracts', async () => {
   assert.equal(validateLayerStateRegistry(), true);
-  assert.equal(REGISTERED_LAYER_IDS.length, 29);
-  assert.equal(new Set(REGISTERED_LAYER_IDS).size, 29);
+  assert.equal(REGISTERED_LAYER_IDS.length, 30);
+  assert.equal(new Set(REGISTERED_LAYER_IDS).size, 30);
   assert.ok(REGISTERED_LAYER_IDS.includes('transit'));
   assert.deepEqual(REGISTERED_LAYER_IDS, [...REGISTERED_LAYER_IDS].sort());
   assert.deepEqual(LEGACY_LAYER_STATE_TOKENS, {
@@ -242,19 +242,19 @@ test('production registry is exact, canonical, and rejects incomplete contracts'
   for (const [id, token] of Object.entries(LEGACY_LAYER_STATE_TOKENS)) {
     assert.equal(LAYER_STATE_TOKEN_RESERVATIONS[id], token);
   }
-  assert.equal(nextLayerStateToken(), '3');
+  assert.equal(nextLayerStateToken(), '4');
   assert.equal(
     nextLayerStateToken({
       ...LAYER_STATE_TOKEN_RESERVATIONS,
-      alpha: '3',
-      bravo: '4',
+      alpha: '4',
+      bravo: '5',
     }),
-    '5',
+    '6',
   );
   const digitsExhausted = {
     ...LAYER_STATE_TOKEN_RESERVATIONS,
     ...Object.fromEntries(
-      [...'3456789'].map((digit) => [`prior-${digit}`, digit]),
+      [...'456789'].map((digit) => [`prior-${digit}`, digit]),
     ),
   };
   assert.equal(nextLayerStateToken(digitsExhausted), '00');
@@ -307,8 +307,8 @@ test('production registry is exact, canonical, and rejects incomplete contracts'
   assert.equal(
     validateLayerStateAllocations(LAYER_STATE_TOKEN_RESERVATIONS, {
       ...LAYER_STATE_TOKEN_RESERVATIONS,
-      future: '3',
-      next: '4',
+      future: '4',
+      next: '5',
     }),
     true,
   );
@@ -318,7 +318,7 @@ test('production registry is exact, canonical, and rejects incomplete contracts'
         ...LAYER_STATE_TOKEN_RESERVATIONS,
         future: '00',
       }),
-    /next free token 3/,
+    /next free token 4/,
   );
   const beforeLastDigit = { ...digitsExhausted };
   delete beforeLastDigit['prior-9'];
@@ -341,10 +341,10 @@ test('production registry is exact, canonical, and rejects incomplete contracts'
   assert.throws(
     () =>
       validateLayerStateAllocations(
-        { ...LAYER_STATE_TOKEN_RESERVATIONS, merged: '3' },
-        { ...LAYER_STATE_TOKEN_RESERVATIONS, merged: '3', competing: '3' },
+        { ...LAYER_STATE_TOKEN_RESERVATIONS, merged: '4' },
+        { ...LAYER_STATE_TOKEN_RESERVATIONS, merged: '4', competing: '4' },
       ),
-    /next free token 4/,
+    /next free token 5/,
   );
   assert.throws(
     () => validateLayerStateAllocations({ future: '00' }, { future: '01' }),
@@ -2422,23 +2422,74 @@ test('wind appearance shares round trip while old links retain weather defaults'
   assert.deepEqual(invalid.options.wind, defaults);
 });
 
-test('observed weather round trips product and opacity without persisting historical playback', () => {
+test('observed weather round trips product and presets without persisting historical playback', () => {
   const state = normalizeLayerState({
     enabledLayerIds: ['weather-radar', 'weather-satellite'],
     options: {
       'weather-radar': { opacity: 'light', play: true },
-      'weather-satellite': { product: 'clouds', opacity: 'light', step: -1 },
+      'weather-satellite': {
+        product: 'clouds',
+        opacity: 'light',
+        infrared: 'filtered',
+        step: -1,
+      },
     },
   });
   const params = new URLSearchParams(encode(state));
   const decoded = decodeLayerStateParams(params);
   assert.deepEqual(decoded, state);
   assert.equal(state.options['weather-satellite'].product, 'clouds');
+  assert.equal(state.options['weather-satellite'].opacity, 'light');
+  assert.equal(state.options['weather-satellite'].infrared, 100);
   assert.equal(Object.hasOwn(state.options['weather-radar'], 'play'), false);
 });
 
-test('satellite infrared display mode round trips and invalid or absent values use filtered', () => {
-  for (const infrared of ['full', 'filtered', undefined, 'invalid']) {
+test('satellite filter strength percentages round-trip and legacy mode codes remain readable', () => {
+  const state = normalizeLayerState({
+    enabledLayerIds: ['weather-satellite'],
+    options: { 'weather-satellite': { infrared: 53, opacity: 'light' } },
+  });
+  const params = encodeLayerStateParams(
+    new URLSearchParams([['v', '2']]),
+    state,
+  );
+  assert.deepEqual(decodeLayerStateParams(params), state);
+  assert.equal(state.options['weather-satellite'].infrared, 53);
+  assert.equal(state.options['weather-satellite'].opacity, 'light');
+  for (const [legacy, expected] of [
+    ['f', 100],
+    ['a', 0],
+  ]) {
+    const decoded = decodeLayerStateParams(
+      new URLSearchParams(`v=2&l=o&lo=o.i.${legacy}`),
+    );
+    assert.equal(decoded.options['weather-satellite'].infrared, expected);
+  }
+  for (const [legacy, expected] of [
+    ['filtered', 100],
+    ['full', 0],
+  ]) {
+    const normalized = normalizeLayerState({
+      enabledLayerIds: ['weather-satellite'],
+      options: { 'weather-satellite': { infrared: legacy } },
+    });
+    assert.equal(normalized.options['weather-satellite'].infrared, expected);
+  }
+  const invalid = normalizeLayerState({
+    enabledLayerIds: ['weather-satellite'],
+    options: { 'weather-satellite': { infrared: 101 } },
+  });
+  assert.equal(invalid.options['weather-satellite'].infrared, 100);
+});
+
+test('satellite cloud filter round trips and invalid or absent values default to Clouds only', () => {
+  for (const [infrared, expected] of [
+    ['full', 0],
+    ['filtered', 100],
+    [53, 53],
+    [undefined, 100],
+    ['invalid', 100],
+  ]) {
     const state = normalizeLayerState({
       enabledLayerIds: ['weather-satellite'],
       options: {
@@ -2454,10 +2505,7 @@ test('satellite infrared display mode round trips and invalid or absent values u
       decodeLayerStateParams(new URLSearchParams(encode(state))),
       state,
     );
-    assert.equal(
-      state.options['weather-satellite'].infrared,
-      infrared === 'full' ? 'full' : 'filtered',
-    );
+    assert.equal(state.options['weather-satellite'].infrared, expected);
     assert.equal(
       Object.hasOwn(state.options['weather-satellite'], 'step'),
       false,
@@ -2639,6 +2687,23 @@ test('the recent-imagery split is share-link only: never stored locally, and a s
   );
 });
 
+test('GNSS interference uses digit 3 without colliding with other digit tokens', () => {
+  const decoded = decodeLayerStateParams(new URLSearchParams('v=2&l=3.2.1'));
+  assert.deepEqual(decoded.enabledLayerIds, [
+    'fire-perimeters',
+    'gnss-integrity',
+    'recent-imagery',
+  ]);
+  assert.equal(
+    LAYER_STATE_REGISTRY.find(({ id }) => id === 'gnss-integrity').token,
+    '3',
+  );
+  assert.deepEqual(
+    decodeLayerStateParams(new URLSearchParams(encode(decoded))),
+    decoded,
+  );
+});
+
 test('fire perimeters uses digit 2 without colliding with wind or recent imagery', () => {
   const decoded = decodeLayerStateParams(new URLSearchParams('v=2&l=2.k.1'));
   assert.deepEqual(decoded.enabledLayerIds, [
@@ -2703,13 +2768,19 @@ test('Street Level: the link codec accepts exactly the windows the filter keeps'
   assert.equal(streetLevelOptions('0.s.3652').sinceDays, 3652);
 });
 
-test('Street Level: a link without the provider switch keeps Mapillary on', () => {
+test('Street Level: a link without the provider switches keeps Mapillary on and Street View off', () => {
   assert.deepEqual(streetLevelOptions(''), {
     mapillary: true,
     providerSwitches: '',
     pano: 'all',
     sinceDays: 0,
   });
+  // Street View rides the shared provider-switch field, off unless lit.
+  assert.equal(streetLevelOptions('0.r.google-1').providerSwitches, 'google-1');
+  assert.equal(
+    createDefaultLayerState().options['street-level'].providerSwitches,
+    '',
+  );
   assert.equal(streetLevelOptions('0.p.f').mapillary, true);
   assert.equal(streetLevelOptions('0.m.0').mapillary, false);
   assert.equal(

src/data/layerStateTokenLedger.test.mjs

@@ -128,10 +128,14 @@ test('reservation ledger is complete, pinned, and rejects duplicate or malformed
     { ...parseLayerStateTokenReservations(reservationRows) },
     { ...LAYER_STATE_TOKEN_RESERVATIONS },
   );
-  assert.equal(Object.keys(LAYER_STATE_TOKEN_RESERVATIONS).length, 29);
+  assert.equal(Object.keys(LAYER_STATE_TOKEN_RESERVATIONS).length, 30);
   assert.deepEqual(
     { ...LAYER_STATE_TOKEN_RESERVATIONS },
-    { ...LEGACY_LAYER_STATE_TOKENS, 'street-level': '0' },
+    {
+      ...LEGACY_LAYER_STATE_TOKENS,
+      'street-level': '0',
+      'gnss-integrity': '3',
+    },
   );
   assert.throws(
     () => parseLayerStateTokenReservations(reservationRows.slice(1)),
@@ -151,9 +155,9 @@ test('reservation ledger is complete, pinned, and rejects duplicate or malformed
     /Duplicate layer-state token reservation/,
   );
   assert.equal(
-    parseLayerStateTokenReservations([...reservationRows, ['future', '3']])
+    parseLayerStateTokenReservations([...reservationRows, ['future', '4']])
       .future,
-    '3',
+    '4',
   );
   assert.throws(
     () =>
@@ -171,14 +175,14 @@ test('reservation ledger is complete, pinned, and rejects duplicate or malformed
 
 test('published retired digits and competing PRs advance the merge-time allocation', () => {
   withPublishedBase(
-    { rows: [...reservationRows, ['retired-layer', '3']] },
+    { rows: [...reservationRows, ['retired-layer', '4']] },
     (cwd) => {
       const published = readPublishedLayerStateReservations('HEAD', cwd);
-      assert.equal(nextLayerStateToken(published), '4');
+      assert.equal(nextLayerStateToken(published), '5');
       assert.equal(
         validateLayerStateAllocations(published, {
           ...published,
-          newcomer: '4',
+          newcomer: '5',
         }),
         true,
       );
@@ -186,15 +190,15 @@ test('published retired digits and competing PRs advance the merge-time allocati
         () =>
           validateLayerStateAllocations(published, {
             ...published,
-            competing: '3',
+            competing: '4',
           }),
-        /next free token 4/,
+        /next free token 5/,
       );
       assert.throws(
         () =>
           validateLayerStateAllocations(published, {
             ...LAYER_STATE_TOKEN_RESERVATIONS,
-            newcomer: '3',
+            newcomer: '4',
           }),
         /changed or removed: retired-layer/,
       );
@@ -202,8 +206,8 @@ test('published retired digits and competing PRs advance the merge-time allocati
   );
 });
 
-test('PR B manually replaces provisional 3 with 4 after PR A publishes 3', () => {
-  withPublishedBase({ rows: [...reservationRows, ['pr-a', '3']] }, (cwd) => {
+test('PR B manually replaces provisional 4 with 5 after PR A publishes 4', () => {
+  withPublishedBase({ rows: [...reservationRows, ['pr-a', '4']] }, (cwd) => {
     mkdirSync(path.join(cwd, 'scripts'));
     const fixtureChecker = path.join(
       cwd,
@@ -224,8 +228,8 @@ test('PR B manually replaces provisional 3 with 4 after PR A publishes 3', () =>
 
     writeCodecFixture(
       cwd,
-      [...reservationRows, ['pr-b', '3']],
-      [{ id: 'pr-b', token: '3' }],
+      [...reservationRows, ['pr-b', '4']],
+      [{ id: 'pr-b', token: '4' }],
     );
     const beforeRebase = runCheck();
     assert.equal(beforeRebase.status, 1);
@@ -233,10 +237,10 @@ test('PR B manually replaces provisional 3 with 4 after PR A publishes 3', () =>
 
     writeCodecFixture(
       cwd,
-      [...reservationRows, ['pr-a', '3'], ['pr-b', '3']],
+      [...reservationRows, ['pr-a', '4'], ['pr-b', '4']],
       [
-        { id: 'pr-a', token: '3' },
-        { id: 'pr-b', token: '3' },
+        { id: 'pr-a', token: '4' },
+        { id: 'pr-b', token: '4' },
       ],
     );
     const staleRebase = runCheck();
@@ -244,16 +248,16 @@ test('PR B manually replaces provisional 3 with 4 after PR A publishes 3', () =>
     assert.match(staleRebase.stderr, /Duplicate layer-state token reservation/);
 
     const published = readPublishedLayerStateReservations('HEAD', cwd);
-    assert.equal(nextLayerStateToken(published), '4');
-    const validBaselineRows = [...reservationRows, ['pr-a', '3']];
-    writeCodecFixture(cwd, validBaselineRows, [{ id: 'pr-a', token: '3' }]);
+    assert.equal(nextLayerStateToken(published), '5');
+    const validBaselineRows = [...reservationRows, ['pr-a', '4']];
+    writeCodecFixture(cwd, validBaselineRows, [{ id: 'pr-a', token: '4' }]);
     const helper = spawnSync(
       process.execPath,
       [realpathSync(fixtureNext), 'pr-b'],
       { cwd, encoding: 'utf8' },
     );
     assert.equal(helper.status, 0, helper.stderr);
-    assert.match(helper.stdout, /pr-b: 4/);
+    assert.match(helper.stdout, /pr-b: 5/);
     assert.deepEqual(
       JSON.parse(readFileSync(path.join(cwd, LEDGER_PATH), 'utf8')),
       validBaselineRows,
@@ -261,20 +265,20 @@ test('PR B manually replaces provisional 3 with 4 after PR A publishes 3', () =>
     );
     writeCodecFixture(
       cwd,
-      [...reservationRows, ['pr-a', '3'], ['pr-b', '4']],
+      [...reservationRows, ['pr-a', '4'], ['pr-b', '5']],
       [
-        { id: 'pr-a', token: '3' },
-        { id: 'pr-b', token: '4' },
+        { id: 'pr-a', token: '4' },
+        { id: 'pr-b', token: '5' },
       ],
     );
     const corrected = runCheck();
     assert.equal(corrected.status, 0, corrected.stderr);
-    assert.match(corrected.stdout, /30 published, 1 new/);
+    assert.match(corrected.stdout, /31 published, 1 new/);
   });
 });
 
 test('allocation batches cross the last digit and base-36 pair boundaries in order', () => {
-  const digitRows = [...'3456789'].map((digit) => [`retired-${digit}`, digit]);
+  const digitRows = [...'456789'].map((digit) => [`retired-${digit}`, digit]);
   const allDigits = parseLayerStateTokenReservations([
     ...reservationRows,
     ...digitRows,
@@ -326,7 +330,7 @@ test('allocation batches cross the last digit and base-36 pair boundaries in ord
 test('an isolated valid two-character fixture round-trips an l field beyond the old 64-character cap', async () => {
   const cwd = mkdtempSync(path.join(tmpdir(), 'gev-layer-token-width-'));
   try {
-    const priorDigits = [...'3456789'].map((digit) => [
+    const priorDigits = [...'456789'].map((digit) => [
       `qa-prior-digit-${digit}`,
       digit,
     ]);
@@ -363,7 +367,7 @@ test('an isolated valid two-character fixture round-trips an l field beyond the
     const params = new URLSearchParams([['v', '2']]);
     codec.encodeLayerStateParams(params, state);
     assert.ok(params.get('l').length > 64, 'fixture must cross the old cap');
-    assert.equal(params.get('l').length, 69);
+    assert.equal(params.get('l').length, 71);
     const restored = codec.decodeLayerStateParams(params);
     assert.deepEqual(restored?.enabledLayerIds, expectedLayerIds);
     assert.deepEqual(restored?.options, state.options);
@@ -381,7 +385,7 @@ test('checker reads a complete future base ledger and rejects retired-token reus
     },
     (cwd) => {
       const published = readPublishedLayerStateReservations('HEAD', cwd);
-      assert.equal(Object.keys(published).length, 30);
+      assert.equal(Object.keys(published).length, 31);
       assert.equal(published['retired-layer'], '00');
       assert.throws(
         () =>

src/data/layerStateTokenReservations.json

@@ -9,6 +9,7 @@
   ["earthquakes", "e"],
   ["fire-perimeters", "2"],
   ["flights", "f"],
+  ["gnss-integrity", "3"],
   ["local-dams", "q"],
   ["local-datacenters", "d"],
   ["local-firms", "w"],

src/data/manager.test.mjs

@@ -2398,10 +2398,13 @@ test('a newer absolute intent aborts a hung guard-compensation instead of starvi
   removeGuard();
   // The newest intent must be able to abort the hung compensation and run.
   const pendingFinalOn = mgr.setEnabled('flights', true, { origin: 'user' });
+  let giveUpTimer;
   const finalOn = await Promise.race([
     pendingFinalOn,
-    new Promise((resolve) => setTimeout(() => resolve('starved'), 2000)),
-  ]);
+    new Promise((resolve) => {
+      giveUpTimer = setTimeout(() => resolve('starved'), 2000);
+    }),
+  ]).finally(() => clearTimeout(giveUpTimer));
   assert.notEqual(finalOn, 'starved', 'newest intent must not starve behind the compensation');
   assert.equal(compensationAborted, true, 'the hung compensation was aborted');
   assert.equal(await pendingBlockedOn, false, 'the guard-blocked request stays unfulfilled');
@@ -2451,10 +2454,13 @@ test('re-entrant setEnabled from a blocked-adoption listener supersedes the comp
   releaseFirstDisable();
 
   const blockedOn = await pendingBlockedOn;
+  let giveUpTimer;
   const reentrant = await Promise.race([
     (async () => reentrantResult === null ? 'never-fired' : await reentrantResult)(),
-    new Promise((resolve) => setTimeout(() => resolve('starved'), 2000)),
-  ]);
+    new Promise((resolve) => {
+      giveUpTimer = setTimeout(() => resolve('starved'), 2000);
+    }),
+  ]).finally(() => clearTimeout(giveUpTimer));
   await pendingOff;
   await mgr.waitForLayerSettled('flights');
   unsubscribe();

src/data/militaryFlights.test.mjs

@@ -71,6 +71,12 @@ test('military analyst record: full record maps every contract field', () => {
     aircraftClass: 'widebody',
     originCountry: null,
     operator: 'United States Air Force',
+    squawk: null,
+    emergency: false,
+    emergencyKind: null,
+    emergencySource: null,
+    emergencyBroadcast: null,
+    lastContactAtMs: null,
     routeOrigin: null,
     routeDestination: null,
   });

src/data/radioProxy.test.mjs

@@ -1,5 +1,9 @@
 import assert from 'node:assert/strict';
+import { EventEmitter } from 'node:events';
+import https from 'node:https';
+import { Readable } from 'node:stream';
 import test from 'node:test';
+import { fetchPinnedRadioResponse } from '../../server/providers/radio/transport.js';
 import {
   createRadioProxyMiddleware,
   isPublicRadioAddress,
@@ -469,3 +473,63 @@ test('proxy rejects any hostname resolution containing a forbidden address befor
   }
   assert.equal(fetchCount, 0);
 });
+
+// Answer every pinned request with `status`, invoking the response callback
+// asynchronously as `https.request` does, outside the caller's promise.
+// The returned promise rejects on an uncaught exception, so a regression fails
+// the race at once instead of leaving the fetch pending.
+function mockMirrorStatus(t, status, statusMessage = '') {
+  let crash;
+  const crashed = new Promise((_resolve, reject) => (crash = reject));
+  const onUncaught = (error) =>
+    crash(new Error(`uncaught exception: ${error.message}`));
+  process.on('uncaughtException', onUncaught);
+  t.after(() => process.off('uncaughtException', onUncaught));
+  t.mock.method(https, 'request', (_url, _options, callback) => {
+    const request = new EventEmitter();
+    request.end = () =>
+      setImmediate(() =>
+        callback(
+          Object.assign(Readable.from([]), {
+            statusCode: status,
+            statusMessage,
+            headers: { 'content-type': 'application/json' },
+          }),
+        ),
+      );
+    return request;
+  });
+  return crashed;
+}
+
+function fetchMirror() {
+  return fetchPinnedRadioResponse(
+    new URL('https://de1.api.radio-browser.info/json/servers'),
+    { headers: {} },
+    [{ address: '93.184.216.34', family: 4 }],
+  );
+}
+
+for (const status of [204, 205, 304]) {
+  test(`a mirror answering null-body status ${status} resolves with a null body instead of crashing`, async (t) => {
+    const crashed = mockMirrorStatus(t, status);
+    const response = await Promise.race([fetchMirror(), crashed]);
+    assert.equal(response.status, status);
+    assert.equal(response.body, null);
+  });
+}
+
+for (const status of [600, 999]) {
+  test(`a mirror answering out-of-range status ${status} rejects instead of crashing`, async (t) => {
+    const crashed = mockMirrorStatus(t, status);
+    await assert.rejects(
+      Promise.race([fetchMirror(), crashed]),
+      new RegExp(`unsupported status ${status}`),
+    );
+  });
+}
+
+test('a mirror answering an invalid reason phrase rejects instead of crashing', async (t) => {
+  const crashed = mockMirrorStatus(t, 200, 'OK\x7f');
+  await assert.rejects(Promise.race([fetchMirror(), crashed]), TypeError);
+});

src/data/regional-calendar-evidence.test.mjs

@@ -0,0 +1,43 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { normalizeRegionalArticles } from './regionalModel.js';
+test('compact source dates must denote an actual calendar instant', () => {
+  for (const date of [
+    '20260230T120000Z',
+    '20260431T120000Z',
+    '20261301T120000Z',
+    '20260716T240000Z',
+    '20260716T126000Z',
+    '20260716T120060Z',
+  ]) {
+    const [article] = normalizeRegionalArticles({
+      articles: [
+        {
+          title: 'Fixture',
+          url: 'https://fixture.example/news',
+          seendate: date,
+        },
+      ],
+    });
+    assert.equal(article.publishedAt, null, date);
+    assert.equal(article.title, 'Fixture');
+  }
+  for (const [input, expected] of [
+    ['20240229T004500Z', '2024-02-29T00:45:00Z'],
+    ['20260716T000000Z', '2026-07-16T00:00:00Z'],
+    ['2026-07-16T12:00:00Z', '2026-07-16T12:00:00.000Z'],
+  ]) {
+    assert.equal(
+      normalizeRegionalArticles({
+        articles: [
+          {
+            title: 'Fixture',
+            url: 'https://fixture.example/news',
+            seendate: input,
+          },
+        ],
+      })[0].publishedAt,
+      expected,
+    );
+  }
+});

src/data/regionalModel.js

@@ -67,11 +67,20 @@ export function normalizeRegionalArticles(payload, limit = MAX_ARTICLES) {
     seen.add(signature);
     const rawDate = cleanText(row?.seendate, 32);
     const compactDate = /^(\d{8})T(\d{6})Z$/.exec(rawDate);
-    const publishedAt = compactDate
+    const candidateDate = compactDate
       ? `${compactDate[1].slice(0, 4)}-${compactDate[1].slice(4, 6)}-${compactDate[1].slice(6, 8)}T${compactDate[2].slice(0, 2)}:${compactDate[2].slice(2, 4)}:${compactDate[2].slice(4, 6)}Z`
-      : Number.isNaN(Date.parse(rawDate))
-        ? null
-        : new Date(rawDate).toISOString();
+      : rawDate;
+    const parsedMs = Date.parse(candidateDate);
+    const validDate =
+      Number.isFinite(parsedMs) &&
+      (!compactDate ||
+        new Date(parsedMs).toISOString().slice(0, 19) ===
+          candidateDate.slice(0, 19));
+    const publishedAt = validDate
+      ? compactDate
+        ? candidateDate
+        : new Date(parsedMs).toISOString()
+      : null;
     articles.push({
       title,
       url,
@@ -87,14 +96,22 @@ export function normalizeRegionalArticles(payload, limit = MAX_ARTICLES) {
   return articles;
 }
 
+/** A reported number, or null when the observation is missing or not numeric. */
+function observedNumber(value) {
+  if (
+    value == null ||
+    typeof value === 'boolean' ||
+    (typeof value === 'string' && !value.trim())
+  )
+    return null;
+  return Number.isFinite(Number(value)) ? Number(value) : null;
+}
+
 /** Normalize Open-Meteo current conditions into a small source-stamped record. */
 export function normalizeRegionalWeather(payload) {
   const current = payload?.current;
-  if (!current || !Number.isFinite(Number(current.temperature_2m))) return null;
-  const numberOrNull = (value) => {
-    if (value === null || value === undefined || value === '') return null;
-    return Number.isFinite(Number(value)) ? Number(value) : null;
-  };
+  if (!current || observedNumber(current.temperature_2m) == null) return null;
+  const numberOrNull = observedNumber;
   // Open-Meteo reports zone-naive timestamps ("2026-08-17T00:15") that are UTC,
   // but JS parses zoneless date-times as LOCAL — pin them to UTC explicitly.
   const observedRaw =
@@ -119,8 +136,8 @@ export function normalizeRegionalWeather(payload) {
 
 /** Translate the WMO weather code used by Open-Meteo into concise cockpit copy. */
 export function weatherCodeLabel(code) {
-  const value = Number(code);
-  if (!Number.isFinite(value)) return 'CONDITIONS UNKNOWN';
+  const value = observedNumber(code);
+  if (value == null) return 'CONDITIONS UNKNOWN';
   if (value === 0) return 'CLEAR';
   if ([1, 2].includes(value)) return 'PARTLY CLOUDY';
   if (value === 3) return 'OVERCAST';

src/data/route-cap-truthfulness.test.mjs

@@ -0,0 +1,24 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { normalizeOsrmSteps, ROUTE_STEPS_MAX } from './routeSteps.js';
+const step = (type) => ({
+  maneuver: { type, location: [10, 20] },
+  distance: 10,
+  duration: 1,
+});
+test('exact-cap routes remain complete and boundary exits retain their distance', () => {
+  const steps = Array.from({ length: ROUTE_STEPS_MAX }, () => step('turn'));
+  assert.equal(normalizeOsrmSteps({ legs: [{ steps }] }).truncated, false);
+  assert.equal(
+    normalizeOsrmSteps({ legs: [{ steps: [...steps, step('turn')] }] })
+      .truncated,
+    true,
+  );
+  steps[steps.length - 1] = step('roundabout');
+  const result = normalizeOsrmSteps({
+    legs: [{ steps: [...steps, step('exit roundabout')] }],
+  });
+  assert.equal(result.truncated, false);
+  assert.equal(result.steps.length, ROUTE_STEPS_MAX);
+  assert.equal(result.steps.at(-1).distanceM, 20);
+});

src/data/routeSteps.js

@@ -185,9 +185,9 @@ export function normalizeOsrmSteps(route) {
         }
         continue;
       }
+      if (out.length >= ROUTE_STEPS_MAX) return { steps: out, truncated: true };
       step.instruction = instructionFor(step);
       out.push(step);
-      if (out.length >= ROUTE_STEPS_MAX) return { steps: out, truncated: true };
     }
   }
   return { steps: out, truncated: false };

src/data/routeSteps.test.mjs

@@ -206,9 +206,9 @@ test('the step list is capped, and the cap is reported rather than hidden', () =
   // would present a route that simply stops in the middle of a road.
   assert.equal(cut.truncated, true);
   const exact = normalizeOsrmSteps({
-    legs: [{ steps: many.slice(0, ROUTE_STEPS_MAX - 1) }],
+    legs: [{ steps: many.slice(0, ROUTE_STEPS_MAX) }],
   });
-  assert.equal(exact.steps.length, ROUTE_STEPS_MAX - 1);
+  assert.equal(exact.steps.length, ROUTE_STEPS_MAX);
   assert.equal(exact.truncated, false, 'a route that fits is not cut');
 });
 

src/data/scenePick.js

@@ -47,3 +47,52 @@ export function isPickedWorldPosition(position) {
   const magnitude = Math.hypot(x, y, z);
   return magnitude >= MIN_PICK_MAGNITUDE_M && magnitude <= MAX_PICK_MAGNITUDE_M;
 }
+
+/**
+ * The world position under a screen point: the rendered surface where the
+ * depth buffer has it, else the ellipsoid; null over the sky.
+ *
+ * @param {object} viewer A Cesium viewer.
+ * @param {{x: number, y: number}} screenPosition
+ * @returns {{x: number, y: number, z: number}|null} A Cartesian3.
+ */
+export function pickGroundPosition(viewer, screenPosition) {
+  const scene = viewer?.scene;
+  let position = null;
+  if (
+    scene?.pickPositionSupported &&
+    typeof scene.pickPosition === 'function'
+  ) {
+    try {
+      position = scene.pickPosition(screenPosition);
+    } catch {
+      position = null;
+    }
+  }
+  if (
+    !isPickedWorldPosition(position) &&
+    typeof viewer?.camera?.pickEllipsoid === 'function'
+  ) {
+    try {
+      position = viewer.camera.pickEllipsoid(screenPosition);
+    } catch {
+      position = null;
+    }
+  }
+  return isPickedWorldPosition(position) ? position : null;
+}
+
+/**
+ * Whether a `scene.pick()` result is the map itself: nothing, or 3D tile
+ * content (which has no id).
+ *
+ * @param {object|null|undefined} picked
+ * @returns {boolean}
+ */
+export function isSurfacePick(picked) {
+  if (!picked) return true;
+  if (picked.id !== undefined) return false;
+  return (
+    picked.content !== undefined || picked.primitive?.isCesium3DTileset === true
+  );
+}

src/data/scenePick.test.mjs

@@ -3,9 +3,8 @@ import assert from 'node:assert/strict';
 import * as Cesium from 'cesium';
 import { isPickedWorldPosition } from './scenePick.js';
 
-const describe = (position) => (position
-  ? `(${position.x}, ${position.y}, ${position.z})`
-  : String(position));
+const describe = (position) =>
+  position ? `(${position.x}, ${position.y}, ${position.z})` : String(position);
 
 test('a degenerate depth pick is rejected before it reaches Cesium', () => {
   // These are the shapes `scene.pickPosition()` can produce when the depth read
@@ -21,7 +20,11 @@ test('a degenerate depth pick is rejected before it reaches Cesium', () => {
     new Cesium.Cartesian3(0.2, -0.3, 0.1),
   ];
   for (const position of degenerate) {
-    assert.equal(isPickedWorldPosition(position), false, `must reject ${describe(position)}`);
+    assert.equal(
+      isPickedWorldPosition(position),
+      false,
+      `must reject ${describe(position)}`,
+    );
   }
 });
 
@@ -38,11 +41,18 @@ test('the guard is an Earth-sized band, not just a non-zero check', () => {
     new Cesium.Cartesian3(0, 0, 5_999_999),
   ];
   for (const position of belowTheFloor) {
-    assert.equal(isPickedWorldPosition(position), false, `must reject ${describe(position)}`);
+    assert.equal(
+      isPickedWorldPosition(position),
+      false,
+      `must reject ${describe(position)}`,
+    );
     // Each one converts WITHOUT throwing — that is exactly what makes it dangerous.
     const carto = Cesium.Cartographic.fromCartesian(position);
     assert.ok(carto, `Cesium converts ${describe(position)} without complaint`);
-    assert.ok(carto.height < -300_000, 'and puts the "target" hundreds of km underground');
+    assert.ok(
+      carto.height < -300_000,
+      'and puts the "target" hundreds of km underground',
+    );
   }
 
   const aboveTheCeiling = [
@@ -52,7 +62,11 @@ test('the guard is an Earth-sized band, not just a non-zero check', () => {
     new Cesium.Cartesian3(1e155, 0, 0),
   ];
   for (const position of aboveTheCeiling) {
-    assert.equal(isPickedWorldPosition(position), false, `must reject ${describe(position)}`);
+    assert.equal(
+      isPickedWorldPosition(position),
+      false,
+      `must reject ${describe(position)}`,
+    );
   }
   assert.throws(
     () => Cesium.Cartographic.fromCartesian(new Cesium.Cartesian3(1e155, 0, 0)),
@@ -61,8 +75,14 @@ test('the guard is an Earth-sized band, not just a non-zero check', () => {
   );
 
   // Both edges of the band are inclusive, and both are real magnitudes.
-  assert.equal(isPickedWorldPosition(new Cesium.Cartesian3(6_000_000, 0, 0)), true);
-  assert.equal(isPickedWorldPosition(new Cesium.Cartesian3(1_000_000_000, 0, 0)), true);
+  assert.equal(
+    isPickedWorldPosition(new Cesium.Cartesian3(6_000_000, 0, 0)),
+    true,
+  );
+  assert.equal(
+    isPickedWorldPosition(new Cesium.Cartesian3(1_000_000_000, 0, 0)),
+    true,
+  );
 });
 
 test('a real picked position is accepted', () => {
@@ -81,13 +101,22 @@ test('a real picked position is accepted', () => {
     Cesium.Cartesian3.fromDegrees(0, 0, 35_786_000),
   ];
   for (const position of real) {
-    assert.equal(isPickedWorldPosition(position), true, `must accept ${describe(position)}`);
+    assert.equal(
+      isPickedWorldPosition(position),
+      true,
+      `must accept ${describe(position)}`,
+    );
   }
 
   // The floor has real margin under the smallest legitimate magnitude, so no
   // plausible pick sits anywhere near the boundary.
-  const polarSurface = Cesium.Cartesian3.magnitude(Cesium.Cartesian3.fromDegrees(0, 90, -10_935));
-  assert.ok(polarSurface > 6_300_000, `smallest real magnitude was ${polarSurface}`);
+  const polarSurface = Cesium.Cartesian3.magnitude(
+    Cesium.Cartesian3.fromDegrees(0, 90, -10_935),
+  );
+  assert.ok(
+    polarSurface > 6_300_000,
+    `smallest real magnitude was ${polarSurface}`,
+  );
 });
 
 test('the guard rejects each way Cesium mishandles a degenerate pick', () => {
@@ -118,7 +147,10 @@ test('the guard rejects each way Cesium mishandles a degenerate pick', () => {
   //    Earth's core. That is the quietest failure of the three and the reason
   //    the guard needs a magnitude band, not just a finiteness check.
   const nearCenter = new Cesium.Cartesian3(0.2, -0.3, 0.1);
-  assert.ok(Cesium.Cartographic.fromCartesian(nearCenter), 'Cesium converts it without complaint');
+  assert.ok(
+    Cesium.Cartographic.fromCartesian(nearCenter),
+    'Cesium converts it without complaint',
+  );
   assert.equal(isPickedWorldPosition(nearCenter), false);
 
   // …and every position the guard accepts must convert to the right place.
@@ -129,3 +161,26 @@ test('the guard rejects each way Cesium mishandles a degenerate pick', () => {
   assert.ok(Math.abs(Cesium.Math.toDegrees(carto.longitude) + 97.7431) < 1e-6);
   assert.ok(Math.abs(Cesium.Math.toDegrees(carto.latitude) - 30.2672) < 1e-6);
 });
+
+test('the ground under a click: the rendered surface, else the ellipsoid, never the sky', async () => {
+  const { pickGroundPosition } = await import('./scenePick.js');
+  const ground = { x: 6378137, y: 0, z: 0 };
+  const sky = { x: 500, y: 0, z: 0 };
+  const viewer = (picked, ellipsoid) => ({
+    scene: { pickPositionSupported: true, pickPosition: () => picked },
+    camera: { pickEllipsoid: () => ellipsoid },
+  });
+  assert.equal(pickGroundPosition(viewer(ground, null), {}), ground);
+  assert.equal(pickGroundPosition(viewer(sky, ground), {}), ground);
+  assert.equal(pickGroundPosition(viewer(undefined, undefined), {}), null);
+  assert.equal(pickGroundPosition(null, {}), null);
+});
+
+test('a surface pick is nothing, or Google 3D tile content without an id', async () => {
+  const { isSurfacePick } = await import('./scenePick.js');
+  assert.equal(isSurfacePick(undefined), true);
+  assert.equal(isSurfacePick({ content: {} }), true);
+  assert.equal(isSurfacePick({ primitive: { isCesium3DTileset: true } }), true);
+  assert.equal(isSurfacePick({ id: 'flight:1', content: {} }), false);
+  assert.equal(isSurfacePick({ primitive: {} }), false, 'an unnamed primitive');
+});

src/data/terrainHeightsProxy.js

@@ -35,7 +35,13 @@ export function parseTerrainPoints(raw) {
     if (parts.length !== 2) return null;
     const lon = Number(parts[0]);
     const lat = Number(parts[1]);
-    if (!Number.isFinite(lon) || !Number.isFinite(lat)) return null;
+    if (
+      !Number.isFinite(lon) ||
+      !Number.isFinite(lat) ||
+      Math.abs(lon) > 180 ||
+      Math.abs(lat) > 90
+    )
+      return null;
     points.push([lon, lat]);
   }
   return points;

src/data/terrainHeightsProxy.test.mjs

@@ -3,6 +3,7 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import {
+  parseTerrainPoints,
   fetchTerrainChunkWithRetry,
   resolveTerrainHeightRequest,
   terrainPointKey,
@@ -227,3 +228,13 @@ test('malformed height objects remain refresh failures, not absent readings', as
     assert.equal(response.cacheChanged, false);
   }
 });
+
+test('terrain parser rejects out-of-range WGS84 points and accepts inclusive bounds', () => {
+  for (const value of ['181,0', '-181,0', '0,91', '0,-91', '1,2;0,91'])
+    assert.equal(parseTerrainPoints(value), null, value);
+  assert.deepEqual(parseTerrainPoints('-180,-90;180,90;0,0'), [
+    [-180, -90],
+    [180, 90],
+    [0, 0],
+  ]);
+});

src/data/weather-missing-observations.test.mjs

@@ -0,0 +1,20 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { normalizeRegionalWeather, weatherCodeLabel } from './regionalModel.js';
+test('missing weather observations never assert clear conditions', () => {
+  for (const value of [null, undefined, '', ' ', false, true]) {
+    assert.equal(weatherCodeLabel(value), 'CONDITIONS UNKNOWN');
+    assert.equal(
+      normalizeRegionalWeather({ current: { temperature_2m: value } }),
+      null,
+    );
+  }
+  assert.equal(weatherCodeLabel(0), 'CLEAR');
+  assert.equal(weatherCodeLabel('0'), 'CLEAR');
+  const record = normalizeRegionalWeather({
+    current: { temperature_2m: 0, weather_code: null, wind_speed_10m: false },
+  });
+  assert.equal(record.temperatureC, 0);
+  assert.equal(record.weatherCode, null);
+  assert.equal(record.windKph, null);
+});

src/director/camera.js

@@ -28,6 +28,11 @@ export function resolveCameraMove(scene, shot) {
   };
 }
 
+/** Wrap an interpolated camera longitude to WGS84 without changing authored endpoints. */
+export function normalizeCameraLongitude(longitude) {
+  return ((((longitude + 180) % 360) + 360) % 360) - 180;
+}
+
 /** Sample the same authored curve for playback and seeking, taking the short longitude/angle arc. */
 export function sampleCameraMove(move, progress) {
   const t = Math.max(0, Math.min(1, Number(progress) || 0));
@@ -45,7 +50,7 @@ export function sampleCameraMove(move, progress) {
   const { from, to } = move;
   return {
     lat: lerp(from.lat, to.lat),
-    lon: ((((angle(from.lon, to.lon) + 180) % 360) + 360) % 360) - 180,
+    lon: normalizeCameraLongitude(angle(from.lon, to.lon)),
     alt: lerp(from.alt, to.alt),
     heading: angle(from.heading, to.heading),
     pitch: lerp(from.pitch, to.pitch),

src/director/director-dateline-seek.test.mjs

@@ -0,0 +1,53 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { cameraAtProgress } from './timeline.js';
+const camera = (lon) => ({
+  lat: 10,
+  lon,
+  alt: 1000,
+  heading: 0,
+  pitch: -40,
+  roll: 0,
+});
+test('director seek follows the short dateline arc in both directions', () => {
+  for (const [a, b] of [
+    [179, -179],
+    [-179, 179],
+  ]) {
+    assert.equal(
+      Math.abs(cameraAtProgress(camera(a), camera(b), 0.5).lon),
+      180,
+    );
+    assert.equal(cameraAtProgress(camera(a), camera(b), 0).lon, a);
+    assert.equal(cameraAtProgress(camera(a), camera(b), 1).lon, b);
+    assert.ok(Math.abs(cameraAtProgress(camera(a), camera(b), 0.25).lon) > 179);
+  }
+  assert.equal(cameraAtProgress(camera(20), camera(24), 0.5).lon, 22);
+});
+
+test('director seek keeps exact ±180 endpoints and picks the short arc near the antipode', () => {
+  for (const [a, b] of [
+    [180, -180],
+    [-180, 180],
+  ]) {
+    assert.equal(cameraAtProgress(camera(a), camera(b), 0).lon, a);
+    assert.equal(cameraAtProgress(camera(a), camera(b), 1).lon, b);
+    assert.equal(
+      Math.abs(cameraAtProgress(camera(a), camera(b), 0.5).lon),
+      180,
+    );
+  }
+  // 10°E to 169.9°W is 179.9° westward through Greenwich, not 180.1° east.
+  const mid = cameraAtProgress(camera(10), camera(-169.9), 0.5).lon;
+  assert.ok(mid > -81 && mid < -79, `short arc midpoint, got ${mid}`);
+});
+
+test('director seek turns heading and roll the short way for any authored angles', () => {
+  const pose = (heading, roll) => ({ ...camera(0), heading, roll });
+  const mid = cameraAtProgress(pose(350, 350), pose(-350, -350), 0.5);
+  // 350° and -350° are 20° apart through 0°/360°, not 340° through 180°.
+  for (const value of [mid.heading, mid.roll]) {
+    const wrapped = ((value % 360) + 360) % 360;
+    assert.ok(wrapped < 1e-9 || 360 - wrapped < 1e-9, `got ${value}`);
+  }
+});

src/director/packs/asset-stream-cancellation.test.mjs

@@ -0,0 +1,79 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createAssetDirectorySource } from './source.js';
+test('cancellation during the terminating read cannot return a scene asset', async () => {
+  for (const cancel of [true, false]) {
+    const controller = new AbortController();
+    let reads = 0,
+      cancelled = 0,
+      released = 0;
+    const source = createAssetDirectorySource({
+      baseUrl: 'https://fixture.example/assets/',
+      fetchImpl: async () => ({
+        ok: true,
+        headers: new Headers({ 'content-type': 'application/octet-stream' }),
+        body: {
+          getReader() {
+            return {
+              async read() {
+                reads++;
+                if (reads === 1)
+                  return { done: false, value: new Uint8Array([1, 2]) };
+                if (cancel) controller.abort();
+                return { done: true };
+              },
+              async cancel() {
+                cancelled++;
+              },
+              releaseLock() {
+                released++;
+              },
+            };
+          },
+        },
+      }),
+    });
+    const pending = source({ path: 'scene.bin', signal: controller.signal });
+    if (cancel) await assert.rejects(pending, { name: 'AbortError' });
+    else assert.deepEqual([...(await pending).bytes], [1, 2]);
+    assert.equal(cancelled, 1);
+    assert.equal(released, 1);
+  }
+});
+
+test('cancellation during reader cleanup cannot return a scene asset', async () => {
+  const controller = new AbortController();
+  const reason = new DOMException('scene changed', 'AbortError');
+  let released = 0;
+  const source = createAssetDirectorySource({
+    baseUrl: 'https://fixture.example/assets/',
+    fetchImpl: async () => ({
+      ok: true,
+      headers: new Headers(),
+      body: {
+        getReader() {
+          let reads = 0;
+          return {
+            async read() {
+              reads++;
+              return reads === 1
+                ? { done: false, value: new Uint8Array([1]) }
+                : { done: true };
+            },
+            async cancel() {
+              controller.abort(reason);
+            },
+            releaseLock() {
+              released++;
+            },
+          };
+        },
+      },
+    }),
+  });
+  await assert.rejects(
+    source({ path: 'scene.bin', signal: controller.signal }),
+    (error) => error === reason,
+  );
+  assert.equal(released, 1);
+});

src/director/packs/source.js

@@ -41,6 +41,7 @@ export function createAssetDirectorySource({
       for (;;) {
         signal?.throwIfAborted();
         const { done, value } = await reader.read();
+        signal?.throwIfAborted();
         if (done) break;
         length += value.byteLength;
         if (length > maxBytes) throw new Error('Asset exceeds byte limit');
@@ -50,6 +51,8 @@ export function createAssetDirectorySource({
       await reader.cancel().catch(() => {});
       reader.releaseLock();
     }
+    // Cleanup awaits too; a cancel during it must still discard the asset.
+    signal?.throwIfAborted();
     const bytes = new Uint8Array(length);
     let offset = 0;
     for (const chunk of chunks) {

src/director/timeline.js

@@ -2,6 +2,7 @@ import {
   resolveCameraPose,
   resolveCameraMove,
   sampleCameraMove,
+  normalizeCameraLongitude,
 } from './camera.js';
 
 const DEFAULT_SHOT_DURATION_SEC = 4;
@@ -40,12 +41,19 @@ export function cameraAtProgress(fromCamera, toCamera, progress) {
   const lerp = (from, to) => Number(from) + (Number(to) - Number(from)) * eased;
   const lerpAngle = (from, to) => {
     const start = Number(from) || 0;
-    const delta = ((Number(to) - start + 540) % 360) - 180;
+    // Double modulo keeps the delta in [-180, 180) for any authored angles,
+    // as sampleCameraMove does; a single % goes negative below -540.
+    const delta = ((((Number(to) - start + 540) % 360) + 360) % 360) - 180;
     return start + delta * eased;
   };
   return {
     lat: lerp(source.lat, target.lat),
-    lon: lerp(source.lon, target.lon),
+    lon:
+      t === 0
+        ? Number(source.lon)
+        : t === 1
+          ? Number(target.lon)
+          : normalizeCameraLongitude(lerpAngle(source.lon, target.lon)),
     alt: lerp(source.alt, target.alt),
     heading: lerpAngle(source.heading, target.heading),
     pitch: lerp(source.pitch, target.pitch),

src/firstRunExperience.test.mjs

@@ -673,11 +673,11 @@ test('the voice TOOL SCHEMA matches the pinned contract — the mission mapping
   // referent-only track_entity alternative (kept out of the model-facing
   // schema, which may not carry top-level anyOf), and Contacts requested-radius
   // list descriptions; the missions still ride existing tools.
-  // Street Level adds toggle enum values and the generated alias hint.
-  assert.equal(block.length, 29802, 'serialized tool schema length drifted');
+  // Street Level and GNSS extend the manifest; broadcast caveats describe tracked and analyst aircraft.
+  assert.equal(block.length, 30511, 'serialized tool schema length drifted');
   assert.equal(
     crypto.createHash('sha256').update(block).digest('hex'),
-    'b316ca2e67848eb565b6847ac044a19d1465d8ef8252a5dfbd7d947a2a36d5ed',
+    '62d5df9cedf413403e4fd0a7cbe94bb2cd13736c3d8fedc84bcccd63ad253eb6',
     'the first-run missions must ride EXISTING tools: no schema edit, no cache bust',
   );
   const instructions = fs.readFileSync(new URL('../server/providers/openai/instructions.js', import.meta.url), 'utf8');

src/googleGeocodeProxy.test.mjs

@@ -0,0 +1,204 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  googlePlacesContextProxy,
+  validateGeocodeAddress,
+  geocodeBounds,
+} from '../vite.config.js';
+
+const UPSTREAM = 'https://geocode.test/json';
+
+function installRoutes({ apiKey = 'server-secret', fetchImpl } = {}) {
+  const routes = new Map();
+  googlePlacesContextProxy({
+    resolveApiKey: () => apiKey,
+    fetchImpl,
+    endpoints: { geocode: UPSTREAM },
+  }).configureServer({
+    middlewares: { use: (name, handler) => routes.set(name, handler) },
+  });
+  return routes;
+}
+
+function invokeRoute(handler, { method = 'GET', url = '/' } = {}) {
+  return new Promise((resolve, reject) => {
+    const headers = new Map();
+    const res = {
+      statusCode: 200,
+      setHeader(name, value) {
+        headers.set(String(name).toLowerCase(), String(value));
+      },
+      end(body = '') {
+        resolve({
+          statusCode: this.statusCode,
+          headers: Object.fromEntries(headers),
+          body: body ? JSON.parse(String(body)) : null,
+        });
+      },
+    };
+    Promise.resolve(
+      handler(
+        { method, url, headers: {}, socket: { remoteAddress: '127.0.0.1' } },
+        res,
+      ),
+    ).catch(reject);
+  });
+}
+
+test('geocoder query and viewport bias are validated before Google is paid', () => {
+  assert.deepEqual(validateGeocodeAddress(new URLSearchParams()), {
+    ok: false,
+    error: 'address is required',
+  });
+  assert.deepEqual(validateGeocodeAddress(new URLSearchParams({ address: '  ' })), {
+    ok: false,
+    error: 'address is required',
+  });
+  assert.deepEqual(
+    validateGeocodeAddress(new URLSearchParams({ address: 'x'.repeat(201) })),
+    { ok: false, error: 'address is too long' },
+  );
+  assert.deepEqual(
+    validateGeocodeAddress(new URLSearchParams({ address: ' Austin ' })),
+    { ok: true, address: 'Austin' },
+  );
+
+  // A bias only ranks results, so an unusable one is dropped, not refused.
+  const bias = '30.1,-97.9|30.4,-97.6';
+  assert.equal(geocodeBounds(new URLSearchParams({ bounds: bias })), bias);
+  for (const bounds of [
+    '',
+    '30.1,-97.9',
+    '30.1,-97.9|30.4',
+    'north,-97.9|30.4,-97.6',
+    '91,-97.9|30.4,-97.6',
+    '30.1,-181|30.4,-97.6',
+    // A blank component must not read as 0 — that is the equator, not a corner.
+    '30.1,-97.9|30.4,',
+    '30.1,|30.4,-97.6',
+    '30.1,-97.9| ,-97.6',
+  ])
+    assert.equal(geocodeBounds(new URLSearchParams({ bounds })), null);
+});
+
+test('the geocode routes keep the key server-side and answer in Google shape', async () => {
+  const upstream = [];
+  const routes = installRoutes({
+    fetchImpl: async (url) => {
+      upstream.push(new URL(String(url)));
+      return Response.json({ status: 'OK', results: [{ place_id: 'fixture' }] });
+    },
+  });
+  const forward = routes.get('/api/google/geocode');
+  const reverse = routes.get('/api/google/reverse-geocode');
+  assert.equal(typeof forward, 'function');
+  assert.equal(typeof reverse, 'function');
+
+  const forwarded = await invokeRoute(forward, {
+    url: '/?address=Austin&bounds=30.1,-97.9|30.4,-97.6',
+  });
+  assert.equal(forwarded.statusCode, 200);
+  assert.deepEqual(forwarded.body, {
+    status: 'OK',
+    results: [{ place_id: 'fixture' }],
+  });
+  assert.equal(upstream.at(-1).searchParams.get('address'), 'Austin');
+  assert.equal(upstream.at(-1).searchParams.get('bounds'), '30.1,-97.9|30.4,-97.6');
+  assert.equal(upstream.at(-1).searchParams.get('key'), 'server-secret');
+
+  const reversed = await invokeRoute(reverse, { url: '/?lat=30.27&lon=-97.74' });
+  assert.equal(reversed.statusCode, 200);
+  assert.equal(upstream.at(-1).searchParams.get('latlng'), '30.27,-97.74');
+  assert.equal(upstream.at(-1).searchParams.get('key'), 'server-secret');
+
+  // The key travels to Google, never back to the page that asked.
+  assert.ok(!JSON.stringify(forwarded.body).includes('server-secret'));
+  assert.ok(!JSON.stringify(reversed.body).includes('server-secret'));
+
+  // A malformed bias is dropped rather than forwarded.
+  await invokeRoute(forward, { url: '/?address=Austin&bounds=north' });
+  assert.equal(upstream.at(-1).searchParams.has('bounds'), false);
+});
+
+test('a bad or keyless geocode request never reaches Google', async () => {
+  const upstream = [];
+  const fetchImpl = async (url) => {
+    upstream.push(String(url));
+    return Response.json({ status: 'OK', results: [] });
+  };
+
+  const routes = installRoutes({ fetchImpl });
+  for (const [path, url] of [
+    ['/api/google/geocode', '/?address='],
+    ['/api/google/reverse-geocode', '/?lat=91&lon=-97.74'],
+  ]) {
+    const response = await invokeRoute(routes.get(path), { url });
+    assert.equal(response.statusCode, 400);
+    assert.deepEqual(response.body.results, []);
+    assert.equal(response.body.status, 'REQUEST_DENIED');
+  }
+
+  for (const path of ['/api/google/geocode', '/api/google/reverse-geocode']) {
+    const rejected = await invokeRoute(routes.get(path), {
+      method: 'POST',
+      url: '/?address=Austin&lat=30&lon=-97',
+    });
+    assert.equal(rejected.statusCode, 405);
+  }
+
+  // Keyless is an empty capability, not an outage: a 200 the browser adapters
+  // read as "this provider did not answer", so the chain moves on. It resolves
+  // ahead of validation, like the Places routes: with nothing configured there
+  // is no request to validate and no quota to protect.
+  const keyless = installRoutes({ apiKey: '  ', fetchImpl });
+  for (const path of ['/api/google/geocode', '/api/google/reverse-geocode'])
+    for (const url of ['/?address=Austin&lat=30&lon=-97', '/?address=&lat=91']) {
+      const response = await invokeRoute(keyless.get(path), { url });
+      assert.equal(response.statusCode, 200);
+      assert.equal(response.headers['cache-control'], 'no-store');
+      assert.deepEqual(response.body, {
+        configured: false,
+        status: 'REQUEST_DENIED',
+        results: [],
+        error: null,
+      });
+    }
+
+  assert.deepEqual(upstream, []);
+});
+
+test('an upstream failure reaches the browser as fixed public text', async () => {
+  const routes = installRoutes({
+    fetchImpl: async () => {
+      throw new Error('connect ECONNREFUSED 10.0.0.7:443');
+    },
+  });
+  for (const path of ['/api/google/geocode', '/api/google/reverse-geocode']) {
+    const response = await invokeRoute(routes.get(path), {
+      url: '/?address=Austin&lat=30&lon=-97',
+    });
+    assert.equal(response.statusCode, 502);
+    assert.deepEqual(response.body, {
+      status: 'UNKNOWN_ERROR',
+      results: [],
+      error: 'Google Geocoding request failed',
+    });
+  }
+});
+
+test('an oversized upstream body is dropped rather than buffered', async () => {
+  const routes = installRoutes({
+    // Two hundred times the 256 KiB ceiling, declared honestly.
+    fetchImpl: async () =>
+      Response.json({ status: 'OK', results: [{ pad: 'x'.repeat(52_428_800) }] }),
+  });
+  const response = await invokeRoute(routes.get('/api/google/geocode'), {
+    url: '/?address=Austin',
+  });
+  assert.equal(response.statusCode, 502);
+  assert.deepEqual(response.body, {
+    status: 'UNKNOWN_ERROR',
+    results: [],
+    error: 'Google Geocoding request failed',
+  });
+});

src/googleServerKey.test.mjs

@@ -67,11 +67,19 @@ test('the Street View tool resolves per-variable overrides before preferring the
   }
 });
 
-test('both Places routes select the intended key and keep it out of responses', async (t) => {
+test('every Google route selects the intended key and keeps it out of responses', async (t) => {
   const original = { server: process.env.GOOGLE_MAPS_SERVER_API_KEY, browser: process.env.GOOGLE_MAPS_API_KEY, limit: process.env.GEV_RATELIMIT_GOOGLE_PER_MIN };
   const calls = [];
   t.mock.method(globalThis, 'fetch', async (url, options) => {
-    calls.push({ url, key: options.headers['X-Goog-Api-Key'] });
+    // Places sends the key as a header; Geocoding's web service takes it as a
+    // query parameter. Either way it must be the server key, and never the
+    // browser's copy of it.
+    calls.push({
+      url,
+      key:
+        options?.headers?.['X-Goog-Api-Key'] ??
+        new URL(String(url)).searchParams.get('key'),
+    });
     return Response.json({ places: [] });
   });
   try {
@@ -88,12 +96,12 @@ test('both Places routes select the intended key and keep it out of responses',
       for (const install of ['configureServer', 'configurePreviewServer']) {
         const routes = new Map();
         googlePlacesContextProxy()[install]({ middlewares: { use: (name, handler) => routes.set(name, handler) } });
-        assert.equal(routes.size, 2);
+        assert.equal(routes.size, 4);
         for (const handler of routes.values()) {
           const before = calls.length;
           let body;
           const res = { setHeader() {}, end(value) { body = value; } };
-          await handler({ method: 'GET', url: '/?lat=30&lon=-97&q=capitol', headers: {}, socket: { remoteAddress: '127.0.0.1' } }, res);
+          await handler({ method: 'GET', url: '/?lat=30&lon=-97&q=capitol&address=capitol', headers: {}, socket: { remoteAddress: '127.0.0.1' } }, res);
           assert.equal(res.statusCode, 200);
           assert.ok(!body.includes('server-secret'));
           if (expected) {

src/keySetupCore.mjs

@@ -36,7 +36,7 @@ export const KEY_SETUP_KEYS = Object.freeze([
   Object.freeze({
     id: 'google-maps',
     title: 'GOOGLE MAPS',
-    unlocks: 'The photorealistic 3D planet + place search',
+    unlocks: 'The photorealistic 3D planet, place search + Street View',
     getUrl: 'https://developers.google.com/maps/documentation/tile/get-api-key',
     envVars: Object.freeze(['GOOGLE_MAPS_API_KEY']),
     tier: 'metered',
@@ -383,6 +383,28 @@ export function keySetupRequirement(id) {
   return `Needs ${entry.envVars.join(' + ')} — add it in Provider Settings`;
 }
 
+/**
+ * Key guidance that also names switched-off sources whose key is already set.
+ * @param {string} requirement What `keySetupRequirement` said ('' allowed).
+ * @param {Array<{label: string, requiresKeyId?: string|null}>} [alternatives]
+ */
+export function keySetupWithAlternatives(requirement, alternatives = []) {
+  const options = alternatives.map(({ label, requiresKeyId }) => {
+    const entry = KEY_SETUP_KEYS.find(
+      (candidate) => candidate.id === requiresKeyId,
+    );
+    const name = entry
+      ? entry.title
+          .toLowerCase()
+          .replace(/\b\w/g, (letter) => letter.toUpperCase())
+      : null;
+    return name ? `light ${label} to use your ${name} key` : `light ${label}`;
+  });
+  if (!options.length) return requirement;
+  const offer = `or ${options.join(', or ')}`;
+  return requirement ? `${requirement}, ${offer}` : offer.replace(/^or l/, 'L');
+}
+
 /**
  * Decide whether a live provider value belongs to a source outside the store
  * Provider Settings is allowed to edit. `wasExternalAtBoot` carries source

src/keySetupCore.test.mjs

@@ -9,6 +9,7 @@ import {
   isKeySetupExternallyManaged,
   keySetupStatus,
   keySetupRequirement,
+  keySetupWithAlternatives,
   knownKeySetupEnvVars,
   parseWindowsUserSid,
   upsertDotenvValues,
@@ -379,3 +380,16 @@ test('server Google key remains supported without appearing in setup or its miss
   assert.ok(!JSON.stringify(status).includes('GOOGLE_MAPS_SERVER_API_KEY'));
   assert.ok(!JSON.stringify(status).includes(secret));
 });
+
+test('key guidance can offer another source that works with a key already set', () => {
+  const streetView = { label: 'STREET VIEW', requiresKeyId: 'google-maps' };
+  assert.equal(
+    keySetupWithAlternatives(keySetupRequirement('mapillary'), [streetView]),
+    'Needs MAPILLARY_CLIENT_TOKEN — add it in Provider Settings, or light STREET VIEW to use your Google Maps key',
+  );
+  assert.equal(
+    keySetupWithAlternatives('', [streetView]),
+    'Light STREET VIEW to use your Google Maps key',
+  );
+  assert.equal(keySetupWithAlternatives('Needs X', []), 'Needs X');
+});

src/layers/bikeshare/proxyRoute.test.mjs

@@ -17,6 +17,7 @@ import { createModel } from './model.js';
 import { CITY_BY_ID } from './registry.js';
 
 const AUSTIN = CITY_BY_ID.get('austin-capmetro');
+const OSLO = CITY_BY_ID.get('oslo-bysykkel');
 
 const STATION_INFORMATION = {
   data: {
@@ -204,6 +205,101 @@ test('the proxy relays its cache policy and upstream host through the mounted ro
   );
 });
 
+test('the Norwegian city-bike systems are served through the mounted route', async () => {
+  for (const [id, systemId] of [
+    ['oslo-bysykkel', 'oslobysykkel.no'],
+    ['bergen-bysykkel', 'bergenbysykkel.no'],
+    ['trondheim-bysykkel', 'trondheimbysykkel.no'],
+  ]) {
+    const system = CITY_BY_ID.get(id);
+    assert.ok(system, `${id} is registered`);
+    assert.deepEqual(system.hosts, ['gbfs.urbansharing.com']);
+    assert.equal(
+      system.stationStatusUrl,
+      `https://gbfs.urbansharing.com/${systemId}/station_status.json`,
+    );
+  }
+
+  await withUpstream(
+    {
+      [OSLO.stationInformationUrl]: STATION_INFORMATION,
+      [OSLO.stationStatusUrl]: STATION_STATUS,
+    },
+    async (requested) => {
+      const source = createBikeshareSource({ fetchImpl: mountGbfsProxy() });
+      const info = await source.getStations(OSLO.stationInformationUrl);
+      const status = await source.getStations(OSLO.stationStatusUrl);
+      assert.deepEqual(requested, [
+        OSLO.stationInformationUrl,
+        OSLO.stationStatusUrl,
+      ]);
+      assert.equal(info.data.stations.length, 1);
+      assert.equal(status.data.stations.length, 1);
+
+      const response = await mountGbfsProxy()(
+        '/api/gbfs/' + encodeURIComponent(OSLO.stationStatusUrl),
+      );
+      assert.equal(response.status, 200);
+      assert.equal(
+        response.headers.get('x-gbfs-upstream'),
+        'gbfs.urbansharing.com',
+      );
+    },
+  );
+});
+
+test('every Norwegian city-bike system is registered and reachable through the mounted route', async () => {
+  const expected = {
+    'stavanger-kolumbus':
+      'https://api.entur.io/mobility/v2/gbfs/v2/kolumbusbysykkel/station_status',
+    'skien-farte':
+      'https://api.entur.io/mobility/v2/gbfs/v2/fartebysykkel/station_status',
+    'lillestrom-bysykkel':
+      'https://api.cyclocity.fr/contracts/lillestrom/gbfs/station_status.json',
+  };
+  const upstream = {};
+  for (const [id, statusUrl] of Object.entries(expected)) {
+    const system = CITY_BY_ID.get(id);
+    assert.ok(system, `${id} is registered`);
+    assert.equal(system.stationStatusUrl, statusUrl);
+    upstream[system.stationInformationUrl] = STATION_INFORMATION;
+    upstream[system.stationStatusUrl] = STATION_STATUS;
+  }
+
+  await withUpstream(upstream, async (requested) => {
+    const source = createBikeshareSource({ fetchImpl: mountGbfsProxy() });
+    for (const id of Object.keys(expected)) {
+      const system = CITY_BY_ID.get(id);
+      const info = await source.getStations(system.stationInformationUrl);
+      const status = await source.getStations(system.stationStatusUrl);
+      assert.equal(info.data.stations.length, 1, `${id} information`);
+      assert.equal(status.data.stations.length, 1, `${id} status`);
+    }
+    assert.equal(requested.length, 6);
+
+    // Entur's extensionless station_information keeps its 5-minute cache.
+    const kolumbus = CITY_BY_ID.get('stavanger-kolumbus');
+    const response = await mountGbfsProxy()(
+      '/api/gbfs/' + encodeURIComponent(kolumbus.stationInformationUrl),
+    );
+    assert.equal(response.headers.get('cache-control'), 'public, max-age=300');
+  });
+});
+
+test('the mounted route keeps multi-API hosts to their GBFS tree', async () => {
+  await withUpstream({}, async (requested) => {
+    const mounted = mountGbfsProxy();
+    for (const target of [
+      'https://api.entur.io/journey-planner/v3/station_status',
+      'https://api.cyclocity.fr/other/station_status.json',
+    ]) {
+      const response = await mounted('/api/gbfs/' + encodeURIComponent(target));
+      assert.equal(response.status, 400, target);
+    }
+    assert.deepEqual(requested, []);
+  });
+});
+
 test('the query-string shape the client used to send is refused by the mounted route', async () => {
   await withUpstream(
     { [AUSTIN.stationStatusUrl]: STATION_STATUS },

src/layers/bikeshare/registry.js

@@ -23,6 +23,47 @@ function bcycleEntry({
     ...buildBcycleUrls(systemId),
   };
 }
+function urbanSharingEntry({
+  id,
+  city,
+  centerLat,
+  centerLon,
+  systemId,
+  provider,
+  loadRadiusKm = 100,
+}) {
+  return {
+    id,
+    city,
+    centerLat,
+    centerLon,
+    loadRadiusKm,
+    provider,
+    stationInformationUrl: `https://gbfs.urbansharing.com/${systemId}/station_information.json`,
+    stationStatusUrl: `https://gbfs.urbansharing.com/${systemId}/station_status.json`,
+  };
+}
+function enturEntry({
+  id,
+  city,
+  centerLat,
+  centerLon,
+  systemId,
+  provider,
+  loadRadiusKm = 100,
+}) {
+  const base = `https://api.entur.io/mobility/v2/gbfs/v2/${systemId}`;
+  return {
+    id,
+    city,
+    centerLat,
+    centerLon,
+    loadRadiusKm,
+    provider,
+    stationInformationUrl: `${base}/station_information`,
+    stationStatusUrl: `${base}/station_status`,
+  };
+}
 const RAW_GBFS_CITY_REGISTRY = [
   {
     id: 'nyc-citibike',
@@ -48,6 +89,56 @@ const RAW_GBFS_CITY_REGISTRY = [
       'https://gbfs.lyft.com/gbfs/2.3/chi/en/station_status.json',
     provider: 'Divvy',
   },
+  {
+    id: 'detroit-mogo',
+    city: 'Detroit, MI',
+    centerLat: 42.3314,
+    centerLon: -83.0458,
+    loadRadiusKm: 90,
+    stationInformationUrl:
+      'https://detroit.publicbikesystem.net/customer/gbfs/v2/en/station_information.json',
+    stationStatusUrl:
+      'https://detroit.publicbikesystem.net/customer/gbfs/v2/en/station_status.json',
+    provider: 'MoGo',
+  },
+  {
+    id: 'pittsburgh-pogoh',
+    city: 'Pittsburgh, PA',
+    centerLat: 40.4406,
+    centerLon: -79.9959,
+    loadRadiusKm: 90,
+    stationInformationUrl:
+      'https://pittsburgh.publicbikesystem.net/customer/gbfs/v2/en/station_information.json',
+    stationStatusUrl:
+      'https://pittsburgh.publicbikesystem.net/customer/gbfs/v2/en/station_status.json',
+    provider: 'POGOH',
+  },
+  {
+    id: 'aspen-we-cycle',
+    city: 'Aspen, CO',
+    centerLat: 39.1911,
+    centerLon: -106.8175,
+    loadRadiusKm: 90,
+    stationInformationUrl:
+      'https://aspen.publicbikesystem.net/customer/gbfs/v2/en/station_information.json',
+    stationStatusUrl:
+      'https://aspen.publicbikesystem.net/customer/gbfs/v2/en/station_status.json',
+    provider: 'WE-cycle',
+  },
+  // HIBike serves both Kailua-Kona and Hilo, about 95 km apart; the centre sits
+  // between them so a camera over either town loads the whole system.
+  {
+    id: 'hawaii-island-hibike',
+    city: 'Kona & Hilo, HI',
+    centerLat: 19.68,
+    centerLon: -155.54,
+    loadRadiusKm: 90,
+    stationInformationUrl:
+      'https://kona.publicbikesystem.net/customer/gbfs/v2/en/station_information.json',
+    stationStatusUrl:
+      'https://kona.publicbikesystem.net/customer/gbfs/v2/en/station_status.json',
+    provider: 'HIBike',
+  },
   {
     id: 'dc-capital-bikeshare',
     city: 'Washington, DC',
@@ -318,6 +409,59 @@ const RAW_GBFS_CITY_REGISTRY = [
     centerLon: -119.6982,
     systemId: 'bcycle_santabarbara',
   }),
+  urbanSharingEntry({
+    id: 'oslo-bysykkel',
+    city: 'Oslo, Norway',
+    centerLat: 59.9139,
+    centerLon: 10.7522,
+    systemId: 'oslobysykkel.no',
+    provider: 'Oslo Bysykkel',
+  }),
+  urbanSharingEntry({
+    id: 'bergen-bysykkel',
+    city: 'Bergen, Norway',
+    centerLat: 60.3913,
+    centerLon: 5.3221,
+    systemId: 'bergenbysykkel.no',
+    provider: 'Bergen Bysykkel',
+  }),
+  urbanSharingEntry({
+    id: 'trondheim-bysykkel',
+    city: 'Trondheim, Norway',
+    centerLat: 63.4305,
+    centerLon: 10.3951,
+    systemId: 'trondheimbysykkel.no',
+    provider: 'Trondheim Bysykkel',
+  }),
+  enturEntry({
+    id: 'stavanger-kolumbus',
+    city: 'Stavanger, Norway',
+    centerLat: 58.9,
+    centerLon: 5.72,
+    systemId: 'kolumbusbysykkel',
+    provider: 'Kolumbus Bysykkel',
+  }),
+  enturEntry({
+    id: 'skien-farte',
+    city: 'Skien/Porsgrunn, Norway',
+    centerLat: 59.16,
+    centerLon: 9.64,
+    systemId: 'fartebysykkel',
+    provider: 'Farte Bysykkel',
+    loadRadiusKm: 40,
+  }),
+  {
+    id: 'lillestrom-bysykkel',
+    city: 'Lillestrøm, Norway',
+    centerLat: 59.9556,
+    centerLon: 11.0492,
+    loadRadiusKm: 40,
+    stationInformationUrl:
+      'https://api.cyclocity.fr/contracts/lillestrom/gbfs/station_information.json',
+    stationStatusUrl:
+      'https://api.cyclocity.fr/contracts/lillestrom/gbfs/station_status.json',
+    provider: 'Bysykkel Lillestrøm',
+  },
 ];
 function normalizeRegistryEntry(entry) {
   const id = String(entry?.id || '')
@@ -346,11 +490,13 @@ function normalizeRegistryEntry(entry) {
   ) {
     throw new Error(`GBFS entry "${id}" must use https URLs`);
   }
-  // Validate that URLs end with expected GBFS endpoint filenames
-  if (!/\/station_information\.json$/i.test(stationInformationUrl.pathname)) {
+  // Validate that URLs end with expected GBFS endpoint names (Entur omits .json)
+  if (
+    !/\/station_information(\.json)?$/i.test(stationInformationUrl.pathname)
+  ) {
     throw new Error(`GBFS entry "${id}" station_information URL is invalid`);
   }
-  if (!/\/station_status\.json$/i.test(stationStatusUrl.pathname)) {
+  if (!/\/station_status(\.json)?$/i.test(stationStatusUrl.pathname)) {
     throw new Error(`GBFS entry "${id}" station_status URL is invalid`);
   }
 

src/layers/bikeshare/usPbscCities.test.mjs

@@ -0,0 +1,77 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { CITY_BY_ID } from './registry.js';
+import { createModel } from './model.js';
+import { createViewport } from './viewport.js';
+import { isAllowedGbfsHost, isAllowedGbfsPath } from '../../data/gbfsSource.js';
+
+// Each city's PBSC host, and the stations farthest from its registered centre
+// in the live feed (checked 2026-10-13). HIBike's centre sits between its two
+// towns, so it lists the outermost station in each.
+const CITIES = {
+  'detroit-mogo': {
+    host: 'detroit.publicbikesystem.net',
+    provider: 'MoGo',
+    stations: [{ name: 'Robina Ave & W Twelve Mile Rd', lat: 42.50288, lon: -83.18921 }],
+  },
+  'pittsburgh-pogoh': {
+    host: 'pittsburgh.publicbikesystem.net',
+    provider: 'POGOH',
+    stations: [{ name: 'Wilkinsburg Park & Ride', lat: 40.446951, lon: -79.888593 }],
+  },
+  'aspen-we-cycle': {
+    host: 'aspen.publicbikesystem.net',
+    provider: 'WE-cycle',
+    stations: [{ name: 'Cowen Dr | Hwy 133', lat: 39.413115, lon: -107.220634 }],
+  },
+  'hawaii-island-hibike': {
+    host: 'kona.publicbikesystem.net',
+    provider: 'HIBike',
+    stations: [
+      { name: 'Kona Community Center', lat: 19.642932, lon: -156.004962 },
+      { name: 'Kealoha Beach Park, Hilo', lat: 19.733317, lon: -155.029202 },
+    ],
+  },
+};
+
+// The production range check, with no viewer or fetches behind it.
+const parts = { model: createModel({ state: {}, services: {}, parts: {}, source: null }) };
+const { computeInRangeCities } = createViewport({
+  state: {},
+  services: { render: { governorRequestRender() {} } },
+  parts,
+  source: null,
+});
+
+test('the added US PBSC systems are registered and readable through the proxy', () => {
+  for (const [id, expected] of Object.entries(CITIES)) {
+    const city = CITY_BY_ID.get(id);
+    assert.ok(city, `${id} is registered`);
+    assert.equal(city.provider, expected.provider);
+    assert.deepEqual(city.hosts, [expected.host]);
+    for (const feed of [city.stationInformationUrl, city.stationStatusUrl]) {
+      const url = new URL(feed);
+      assert.ok(isAllowedGbfsHost(url.hostname), `${id} host ${url.hostname}`);
+      assert.ok(isAllowedGbfsPath(url.pathname), `${id} path ${url.pathname}`);
+    }
+  }
+});
+
+test('a camera over each outermost station activates its system', () => {
+  for (const [id, expected] of Object.entries(CITIES)) {
+    for (const station of expected.stations) {
+      assert.ok(
+        computeInRangeCities({ lat: station.lat, lon: station.lon }).has(id),
+        `${station.name} activates ${id}`,
+      );
+    }
+  }
+});
+
+test('HIBike stays inactive away from Hawaii Island', () => {
+  // Honolulu is about 270 km from the HIBike centre.
+  assert.equal(
+    computeInRangeCities({ lat: 21.3069, lon: -157.8583 }).has('hawaii-island-hibike'),
+    false,
+  );
+});

src/layers/cctv/videoPlayback.js

@@ -1,3 +1,28 @@
+/**
+ * A v4 UUID for the client lease. `crypto.randomUUID` only exists in secure
+ * contexts, so a page opened over plain HTTP from another machine (the
+ * HOST=0.0.0.0 LAN opt-in) has none; `getRandomValues` exists in every context
+ * and yields the same shape the server's lease check accepts.
+ */
+export function createLeaseId(cryptoImpl = globalThis.crypto) {
+  if (typeof cryptoImpl.randomUUID === 'function') {
+    return cryptoImpl.randomUUID();
+  }
+  const bytes = cryptoImpl.getRandomValues(new Uint8Array(16));
+  bytes[6] = (bytes[6] & 0x0f) | 0x40;
+  bytes[8] = (bytes[8] & 0x3f) | 0x80;
+  const hex = Array.from(bytes, (byte) => byte.toString(16).padStart(2, '0'));
+  return [
+    hex.slice(0, 4),
+    hex.slice(4, 6),
+    hex.slice(6, 8),
+    hex.slice(8, 10),
+    hex.slice(10),
+  ]
+    .map((group) => group.join(''))
+    .join('-');
+}
+
 /** One decoder per active camera; both surfaces consume this video element. */
 export function attachCctvVideo(
   video,
@@ -7,13 +32,14 @@ export function attachCctvVideo(
     loadHls = () => import('hls.js'),
     onFailure = () => {},
     fetchImpl = globalThis.fetch,
+    cryptoImpl = globalThis.crypto,
   } = {},
 ) {
   // Preserve replay for existing finite video feeds; live HLS must not loop.
   video.loop = feedType !== 'hls';
   let disposed = false;
   let hls = null;
-  const leaseId = feedType === 'hls' ? globalThis.crypto.randomUUID() : null;
+  const leaseId = feedType === 'hls' ? createLeaseId(cryptoImpl) : null;
   const mediaUrl =
     feedType === 'hls'
       ? `${url}${url.includes('?') ? '&' : '?'}lease=${leaseId}`

src/layers/cctv/videoPlayback.test.mjs

@@ -1,6 +1,15 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
-import { attachCctvVideo } from './videoPlayback.js';
+import { webcrypto } from 'node:crypto';
+import { attachCctvVideo, createLeaseId } from './videoPlayback.js';
+
+const LEASE_V4 =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
+
+/** What an insecure context exposes: getRandomValues but no randomUUID. */
+const insecureCrypto = {
+  getRandomValues: (array) => webcrypto.getRandomValues(array),
+};
 function video() {
   const v = new EventTarget();
   Object.assign(v, {
@@ -69,6 +78,34 @@ test('native HLS releases its client lease without response-header access', asyn
   assert.equal(releases[0].init.method, 'DELETE');
 });
 
+test('lease ids are v4 UUIDs with or without crypto.randomUUID', () => {
+  assert.match(createLeaseId(), LEASE_V4);
+  const ids = new Set();
+  for (let i = 0; i < 64; i++) ids.add(createLeaseId(insecureCrypto));
+  assert.equal(ids.size, 64);
+  for (const id of ids) assert.match(id, LEASE_V4);
+});
+
+test('HLS starts on a plain-HTTP LAN page without crypto.randomUUID', async () => {
+  const source = video();
+  source.canPlayType = () => 'probably';
+  const playback = attachCctvVideo(source, '/api/cctv/media/a', 'hls', {
+    loadHls: async () => ({ default: { isSupported: () => false } }),
+    fetchImpl: async () => {},
+    cryptoImpl: insecureCrypto,
+  });
+  try {
+    await playback.ready;
+    const lease = new URL(
+      source.src,
+      'http://192.168.1.10:4173/',
+    ).searchParams.get('lease');
+    assert.match(lease, LEASE_V4);
+  } finally {
+    playback.dispose();
+  }
+});
+
 test('finite video feeds retain looping while live HLS does not loop', async () => {
   for (const feedType of ['mp4', 'webm', 'hls']) {
     const source = video();

src/layers/directions/index.js

@@ -617,32 +617,11 @@ export function createDirectionsLayer({ services, source }) {
   }
 
   function pickGround(screenPosition) {
-    const scene = _viewer?.scene;
-    let cartesian = null;
-    if (
-      scene?.pickPositionSupported &&
-      typeof scene.pickPosition === 'function'
-    ) {
-      try {
-        cartesian = scene.pickPosition(screenPosition);
-      } catch {
-        cartesian = null;
-      }
-    }
-    if (
-      !services.scenePick.isPickedWorldPosition(cartesian) &&
-      typeof _viewer?.camera?.pickEllipsoid === 'function'
-    ) {
-      try {
-        cartesian = _viewer.camera.pickEllipsoid(
-          screenPosition,
-          Cesium.Ellipsoid.WGS84,
-        );
-      } catch {
-        cartesian = null;
-      }
-    }
-    if (!services.scenePick.isPickedWorldPosition(cartesian)) return null;
+    const cartesian = services.scenePick.pickGroundPosition(
+      _viewer,
+      screenPosition,
+    );
+    if (!cartesian) return null;
     const carto = Cesium.Cartographic.fromCartesian(cartesian);
     if (!carto) return null;
     return {

src/layers/flights/policy.js

@@ -7,6 +7,7 @@ export {
   ERROR_BACKOFF_INTERVAL,
 } from './recordPolicy.js';
 import * as Cesium from 'cesium';
+import { EMERGENCY_TINT_CSS } from '../../data/aircraftEmergency.js';
 
 export const FOCUS_EVIDENCE_DEV = import.meta.env?.DEV === true;
 
@@ -14,6 +15,11 @@ export const FOCUS_EVIDENCE_DEV = import.meta.env?.DEV === true;
 
 export const MIL_TINT = Cesium.Color.fromCssColorString('#FFB800');
 
+/** Red tint for aircraft broadcasting an emergency (7500/7600/7700 or ADS-B status). */
+
+export const EMERGENCY_TINT =
+  Cesium.Color.fromCssColorString(EMERGENCY_TINT_CSS);
+
 // --- Ground traffic (owner reversal 2026-07-03: "absolutely we should see planes
 // taxiing and landing") -----------------------------------------------------------
 // Present-but-grounded planes are RENDERED instead of being skipped: same class

src/layers/flights/queries.js

@@ -15,6 +15,7 @@ import {
   FOCUS_EVIDENCE_DEV,
   FLEET_DR_INTERVAL_MS,
 } from './policy.js';
+import { emergencyBroadcastPhrase } from '../../data/aircraftEmergency.js';
 
 export function createQueries({
   flightState,
@@ -167,6 +168,10 @@ export function createQueries({
         flightState.records.missingPolls.get(icao24) ||
         flightState.feed._backoff,
       ),
+      // This poll's transponder broadcast (not sticky; see records.js).
+      squawk: info?.squawk ?? null,
+      emergency: info?.emergency ? { ...info.emergency } : null,
+      emergencyBroadcast: emergencyBroadcastPhrase(info?.emergency),
       airline: info?.airline ?? null,
       // CLASS label follows the TR-3B conversion so every downstream card
       // (cockpit, Contacts, analyst) agrees with the triangle on screen.
@@ -219,7 +224,10 @@ export function createQueries({
    *   lon: number|null, altitudeM: number|null, speedMps: number|null,
    *   heading: number|null, verticalRateMps: number|null, onGround: boolean,
    *   military: boolean, aircraftClass: string|null, originCountry: string|null,
-   *   operator: string|null, routeOrigin: string|null, routeDestination: string|null}}
+   *   operator: string|null, squawk: string|null, emergency: boolean,
+   *   emergencyKind: string|null, emergencySource: 'squawk'|'ads-b'|null,
+   *   emergencyBroadcast: string|null, lastContactAtMs: number|null, routeOrigin: string|null,
+   *   routeDestination: string|null}}
    */
 
   function mapAnalystRecord(
@@ -253,6 +261,20 @@ export function createQueries({
       aircraftClass: tr3bAircraftClass(icao24, text(info?.klass)),
       originCountry: text(info?.originCountry),
       operator: text(info?.airline),
+      squawk: text(info?.squawk),
+      // True while this poll broadcast an emergency (7500/7600/7700 or the
+      // ADS-B status); priority statuses (lifeguard, minfuel) report the kind
+      // without the flag.
+      emergency: info?.emergency?.severity === 'emergency',
+      emergencyKind: text(info?.emergency?.kind),
+      // Provenance, so a summary can say "broadcasting squawk 7700" rather
+      // than "ADS-B reports general emergency" (or flatten both): 'squawk'
+      // when the Mode A code names the status, 'ads-b' for the readsb field.
+      emergencySource: text(info?.emergency?.source),
+      emergencyBroadcast: emergencyBroadcastPhrase(info?.emergency),
+      // Latest known general aircraft-message contact, retained if a poll
+      // has no time. This is not the receipt time of the current status.
+      lastContactAtMs: num(info?.lastContactEpochMs),
       routeOrigin: routeOk ? text(info?.route?.origin?.code) : null,
       routeDestination: routeOk ? text(info?.route?.destination?.code) : null,
     };

src/layers/flights/records.js

@@ -4,6 +4,7 @@ import {
   pickRenderAltitudeM,
 } from '../../data/renderAltitude.js';
 import { classifyAircraft } from '../../data/aircraftClass.js';
+import { aircraftEmergency } from '../../data/aircraftEmergency.js';
 import {
   approxDistanceKm,
   GROUND_FLOOR_CLAMP_RADIUS_KM,
@@ -226,6 +227,22 @@ export class FlightRecords {
       // like callsign so a transient blank row doesn't blank the field.
       originCountry:
         stickyText(origin_country, prevMeta?.originCountry) || null,
+      // Per poll, NOT sticky: an emergency code clears when the crew resets
+      // it, so a blank squawk must not hold a stale 7700 on screen.
+      squawk: observation.squawk ?? null,
+      // One source-switch omission may retain an ADS-B status, while an
+      // explicit clear or changed squawk always takes effect immediately.
+      emergency:
+        observation.emergency === undefined &&
+        observation.squawk === prevMeta?.squawk &&
+        prevMeta?.emergency?.source === 'ads-b' &&
+        (prevMeta?.missingEmergencyPolls ?? 0) < 1
+          ? prevMeta.emergency
+          : aircraftEmergency(observation),
+      missingEmergencyPolls:
+        observation.emergency === undefined
+          ? (prevMeta?.missingEmergencyPolls ?? 0) + 1
+          : 0,
       // OpenSky distinguishes the last position epoch from the last
       // transponder message. The fleet coast horizon uses this actual
       // contact time so a temporarily old position does not hard-freeze

src/layers/flights/records.test.mjs

@@ -106,3 +106,13 @@ test('ground transitions preserve last render height while a surface cell is col
   assert.equal(next.meta.renderAltitudeM, 1040);
   assert.equal(next.meta.wasAirborne, true);
 });
+
+test('civil emergency status follows the latest poll instead of sticking', () => {
+  const store = records();
+  const first = store.receive(observation({ squawk: '7700' }), view());
+  assert.equal(first.meta.squawk, '7700');
+  assert.equal(first.meta.emergency.kind, 'general');
+  const next = store.receive(observation({ squawk: '2000' }), view());
+  assert.equal(next.meta.squawk, '2000');
+  assert.equal(next.meta.emergency, null);
+});

src/layers/flights/rendering.js

@@ -3,6 +3,7 @@ import { cyberSonarBaseAlpha } from '../../cyberSonar.js';
 import { selectModelEligible } from '../../data/modelEligibility.js';
 import { civilAircraftModelSpec } from './modelSpec.js';
 import { CLASS_SCALE_2D } from '../../data/aircraftClass.js';
+import { isEmergency } from '../../data/aircraftEmergency.js';
 import { cockpitContactDotImage } from '../../data/cockpitContactDot.js';
 import { aircraftIcon, TRACKED_ICON_PX } from '../../data/aircraftIcons.js';
 import {
@@ -13,6 +14,7 @@ import {
 import { limitCourseStep, courseSlewCapDps } from '../../data/motionModel.js';
 import {
   MIL_TINT,
+  EMERGENCY_TINT,
   GROUND_SCALE,
   COCKPIT_CONTACT_SIZE_PX,
   COCKPIT_CIVILIAN_COLOR,
@@ -54,13 +56,34 @@ export function createRendering({
   const { applyAircraftBillboardTreatment, applyAircraftModelTreatment } =
     services.recession;
 
-  /** Fleet (untracked) billboard tint: amber for known-military, white otherwise.
+  /** True while this contact's latest poll broadcast an emergency code. */
+
+  function _isEmergency(icao24, info = flightState.records.data.get(icao24)) {
+    return isEmergency(info?.emergency);
+  }
+
+  /** Fleet (untracked) billboard tint: red while broadcasting an emergency,
+   *  amber for known-military, white otherwise.
    *  Ground traffic gets NO special tint (owner verdict 2026-07-03 field test). */
 
-  function _fleetBillboardColor(icao24) {
+  function _fleetBillboardColor(
+    icao24,
+    info = flightState.records.data.get(icao24),
+  ) {
+    if (_isEmergency(icao24, info)) return EMERGENCY_TINT;
     return isMilitaryIcao(icao24) ? MIL_TINT : Cesium.Color.WHITE;
   }
 
+  /** Cockpit far-contact dot tint: the emergency red outranks the category tint. */
+
+  function _cockpitContactColor(
+    icao24,
+    info = flightState.records.data.get(icao24),
+  ) {
+    if (_isEmergency(icao24, info)) return EMERGENCY_TINT;
+    return isMilitaryIcao(icao24) ? MIL_TINT : COCKPIT_CIVILIAN_COLOR;
+  }
+
   /** Fleet billboard scale: per-class scale, ×GROUND_SCALE while grounded. */
 
   function _fleetBillboardScale(icao24, klass) {
@@ -129,9 +152,7 @@ export function createRendering({
       bb.height = COCKPIT_CONTACT_SIZE_PX;
       bb.scale = limbScale;
       bb.scaleByDistance = _cockpitBillboardScaleByDistance();
-      bb.color = (
-        isMilitaryIcao(icao24) ? MIL_TINT : COCKPIT_CIVILIAN_COLOR
-      ).withAlpha(freshnessAlpha);
+      bb.color = _cockpitContactColor(icao24).withAlpha(freshnessAlpha);
       bb.rotation = 0;
       return;
     }
@@ -162,7 +183,7 @@ export function createRendering({
 
   function _modelColor(icao24) {
     if (icao24 === flightState._trackedIcao) return Cesium.Color.CYAN;
-    return isMilitaryIcao(icao24) ? MIL_TINT : Cesium.Color.WHITE;
+    return _fleetBillboardColor(icao24);
   }
 
   /** The FLEET's 3D-model regime: models3d enabled AND the camera zoomed in past the altitude
@@ -1009,10 +1030,8 @@ export function createRendering({
         flightState._cockpitNearContacts.has(icao24);
       const layerBaseColor =
         flightState._cockpitContactMode && !isCockpitNear
-          ? isMilitaryIcao(icao24)
-            ? MIL_TINT
-            : COCKPIT_CIVILIAN_COLOR
-          : _fleetBillboardColor(icao24);
+          ? _cockpitContactColor(icao24, info)
+          : _fleetBillboardColor(icao24, info);
       const baseColor = layerBaseColor;
       const treatment = applyAircraftBillboardTreatment({
         billboard: bb,

src/layers/gnss/index.js

@@ -0,0 +1,422 @@
+import * as Cesium from 'cesium';
+import {
+  GNSS_LEVEL_COLORS,
+  GNSS_MIN_AIRCRAFT,
+  GNSS_WINDOW_MS,
+  accumulateGnssObservations,
+  binGnssCells,
+  gnssProvenance,
+  pruneGnssObservations,
+} from './records.js';
+export * from './records.js';
+export { createAdsbGnssSource } from './source.js';
+
+/**
+ * GroundPrimitive allowPicking:false suppresses ids but still submits stencil
+ * commands in Cesium's pick pass, erasing picks of overlapping ground geometry.
+ * This fill participates only in rendering, so sibling polygons remain pickable.
+ */
+class GnssGroundFill extends Cesium.GroundPrimitive {
+  update(frameState) {
+    if (!frameState.passes.pick) super.update(frameState);
+  }
+}
+
+/** Low stays visible over land so coverage reads apart from no data. */
+const FILL_ALPHA = Object.freeze({ low: 0.3, medium: 0.42, high: 0.55 });
+const LEVEL_LABELS = Object.freeze({
+  low: 'Low-accuracy score < 2%',
+  medium: 'Low-accuracy score 2–10%',
+  high: 'Low-accuracy score > 10%',
+});
+
+/** Degrees at the centre of the current view, or null before the camera settles. */
+export function defaultGnssViewAnchor(viewer) {
+  const canvas = viewer?.scene?.canvas;
+  const ellipsoid = viewer?.scene?.globe?.ellipsoid;
+  // At globe scale the visible rectangle can be the whole world, whose
+  // midpoint is unrelated to the place under the screen centre.
+  const centre =
+    canvas?.clientWidth > 0 &&
+    canvas.clientHeight > 0 &&
+    viewer.camera?.pickEllipsoid?.(
+      new Cesium.Cartesian2(canvas.clientWidth / 2, canvas.clientHeight / 2),
+      ellipsoid,
+    );
+  const rectangle =
+    !centre && viewer?.camera?.computeViewRectangle?.(ellipsoid);
+  const carto = centre
+    ? (ellipsoid || Cesium.Ellipsoid.WGS84).cartesianToCartographic(centre)
+    : rectangle
+      ? Cesium.Rectangle.center(rectangle)
+      : viewer?.camera?.positionCartographic;
+  if (!carto) return null;
+  const latitude = Cesium.Math.toDegrees(carto.latitude);
+  const longitude = Cesium.Math.toDegrees(carto.longitude);
+  return Number.isFinite(latitude) && Number.isFinite(longitude)
+    ? { latitude, longitude }
+    : null;
+}
+
+/**
+ * Own one GNSS navigation-integrity display: rolling integrity observations
+ * around the views the user visits, binned into cells coloured by the
+ * gpsjam low-accuracy score. Share links retain token 3.
+ */
+export function createGnssIntegrityLayer({
+  source,
+  viewAnchor = defaultGnssViewAnchor,
+  now = () => Date.now(),
+  monotonicNow = () => performance.now(),
+  windowMs = GNSS_WINDOW_MS,
+} = {}) {
+  if (typeof source?.getSnapshot !== 'function')
+    throw new TypeError('GNSS integrity layer requires a snapshot source');
+  let _viewer = null;
+  let _primitives = null;
+  let _request = null;
+  let _enabled = false;
+  let _cells = [];
+  let _signature = null;
+  let _lastUpdate = null;
+  let _lastError = null;
+  let _stale = false;
+  let _manager = null;
+  let _cameraTimer = null;
+  let _backgroundRefresh = null;
+  let _lastQueryKey = null;
+  let _lastRequestAt = -Infinity;
+  let _removeCameraEnd = null;
+  let _removeCameraChanged = null;
+  let _coverage = null;
+  let _retryTimer = null;
+  let _retryAt = 0;
+  let _failureCount = 0;
+  const _observations = new Map();
+  const provenance = gnssProvenance({ windowMs });
+
+  const queryKey = (anchor) =>
+    anchor
+      ? `${Math.round(anchor.latitude)},${Math.round(anchor.longitude)}`
+      : null;
+
+  function scheduleCameraRefresh() {
+    if (!_enabled || !_primitives) return;
+    if (now() < _retryAt) return;
+    const key = queryKey(viewAnchor(_viewer));
+    if (!key || key === _lastQueryKey) return;
+    clearTimeout(_cameraTimer);
+    // Debounce drags and bound moving/follow cameras to at most 24 requests
+    // per minute. Nearby views share the proxy's whole-degree cache key.
+    _cameraTimer = setTimeout(
+      async () => {
+        _cameraTimer = null;
+        if (!_enabled || _backgroundRefresh || _request) return;
+        const key = queryKey(viewAnchor(_viewer));
+        if (!key || key === _lastQueryKey) return;
+        await refreshInBackground();
+      },
+      Math.max(600, 2500 - (monotonicNow() - _lastRequestAt)),
+    );
+  }
+
+  async function refreshInBackground() {
+    if (!_enabled || _backgroundRefresh) return;
+    const controller = new AbortController();
+    _backgroundRefresh = controller;
+    try {
+      if (_manager)
+        await _manager.refreshLayer(layer.id, { signal: controller.signal });
+      else await layer.update(undefined, { signal: controller.signal });
+    } finally {
+      if (_backgroundRefresh === controller) {
+        _backgroundRefresh = null;
+        scheduleCameraRefresh();
+        scheduleRetry();
+      }
+    }
+  }
+
+  function scheduleRetry() {
+    clearTimeout(_retryTimer);
+    _retryTimer = null;
+    if (!_enabled || !_retryAt) return;
+    // Long provider cooldowns keep their full deadline. Browser timers cannot
+    // exceed ~24 days, so wake in bounded chunks without fetching early.
+    _retryTimer = setTimeout(
+      () => {
+        _retryTimer = null;
+        void refreshInBackground();
+      },
+      Math.min(2147483647, Math.max(0, _retryAt - now())),
+    );
+    _retryTimer?.unref?.();
+  }
+
+  /** Age the store without new evidence, so expired cells leave the globe. */
+  function expire() {
+    pruneGnssObservations(_observations, now(), { windowMs });
+    _cells = binGnssCells(_observations);
+    render();
+  }
+
+  function render() {
+    // Only the id and band change what is drawn; counts alone do not.
+    const signature = JSON.stringify(
+      _cells.map(({ id, level }) => [id, level]),
+    );
+    if (signature === _signature) return;
+    _signature = signature;
+    _primitives.removeAll();
+    if (_cells.length) {
+      _primitives.add(
+        new GnssGroundFill({
+          geometryInstances: _cells.map(
+            (cell) =>
+              new Cesium.GeometryInstance({
+                id: `${layer.id}:${cell.id}`,
+                geometry: new Cesium.RectangleGeometry({
+                  rectangle: Cesium.Rectangle.fromDegrees(
+                    cell.west,
+                    cell.south,
+                    cell.east,
+                    cell.north,
+                  ),
+                  vertexFormat: Cesium.PerInstanceColorAppearance.VERTEX_FORMAT,
+                }),
+                attributes: {
+                  color: Cesium.ColorGeometryInstanceAttribute.fromColor(
+                    Cesium.Color.fromCssColorString(
+                      GNSS_LEVEL_COLORS[cell.level],
+                    ).withAlpha(FILL_ALPHA[cell.level]),
+                  ),
+                },
+              }),
+          ),
+          appearance: new Cesium.PerInstanceColorAppearance({
+            flat: true,
+            translucent: true,
+          }),
+          classificationType: Cesium.ClassificationType.BOTH,
+          allowPicking: false,
+          // Retain the compact rectangle descriptors for inspection, not Entity visualizers.
+          releaseGeometryInstances: false,
+        }),
+      );
+    }
+    _viewer?.scene?.requestRender?.();
+  }
+
+  const layer = {
+    id: 'gnss-integrity',
+    name: 'GNSS Integrity',
+    icon: '📡',
+    source: 'adsb.lol',
+    /** Where each part of the method comes from; see records.js. */
+    provenance,
+    updateInterval: 60000,
+
+    attachDataManager(manager) {
+      _manager = manager;
+    },
+
+    init(viewer) {
+      if (_viewer)
+        throw new Error('GNSS integrity layer is already initialized');
+      _viewer = viewer;
+      _primitives = new Cesium.PrimitiveCollection();
+      _primitives.id = layer.id;
+      _primitives.show = false;
+      viewer.scene.groundPrimitives.add(_primitives);
+      _removeCameraEnd = viewer.camera?.moveEnd?.addEventListener(
+        scheduleCameraRefresh,
+      );
+      _removeCameraChanged = viewer.camera?.changed?.addEventListener(
+        scheduleCameraRefresh,
+      );
+    },
+
+    enable() {
+      _enabled = true;
+      // Cells left from before a long disable must not reappear past the window.
+      if (_primitives) {
+        expire();
+        _primitives.show = true;
+      }
+    },
+
+    disable() {
+      clearTimeout(_cameraTimer);
+      _cameraTimer = null;
+      clearTimeout(_retryTimer);
+      _retryTimer = null;
+      _backgroundRefresh?.abort();
+      _backgroundRefresh = null;
+      _request?.abort();
+      _request = null;
+      _enabled = false;
+      if (_primitives) _primitives.show = false;
+    },
+
+    async update(_viewerArg, { signal } = {}) {
+      if (!_enabled || !_primitives || signal?.aborted) return false;
+      if (now() < _retryAt) {
+        expire();
+        scheduleRetry();
+        return true;
+      }
+      _retryAt = 0;
+      clearTimeout(_retryTimer);
+      _retryTimer = null;
+      const anchor = viewAnchor(_viewer);
+      // No anchor yet (camera still settling) is not a failure: returning
+      // false would make the manager reject the enable. The next interval
+      // retries; cells already drawn still age out of the window.
+      if (!anchor) {
+        expire();
+        return true;
+      }
+      _request?.abort();
+      const request = new AbortController();
+      _request = request;
+      const onAbort = () => request.abort(signal.reason);
+      signal?.addEventListener('abort', onAbort, { once: true });
+      _lastQueryKey = queryKey(anchor);
+      _lastRequestAt = monotonicNow();
+      _coverage = {
+        kind: 'regional',
+        latitude: Math.round(anchor.latitude),
+        longitude: Math.round(anchor.longitude),
+        radiusNm: 250,
+      };
+      let received = false;
+      try {
+        const snapshot = await source.getSnapshot(anchor, {
+          signal: request.signal,
+        });
+        if (request.signal.aborted || _request !== request || !_enabled)
+          return false;
+        received = true;
+        // Date the rows by when the proxy observed them: a cached or stale
+        // replay keeps its original age instead of restarting the window.
+        // The proxy reports that age, so client and server clocks never mix.
+        const at = now();
+        accumulateGnssObservations(_observations, snapshot.rows, at, {
+          windowMs,
+          observedAt: at - snapshot.ageMs,
+        });
+        _cells = binGnssCells(_observations);
+        render();
+        _stale = snapshot.stale === true;
+        _lastUpdate = at - snapshot.ageMs;
+        _lastError = null;
+        _retryAt = 0;
+        _failureCount = 0;
+        return true;
+      } catch (e) {
+        if (request.signal.aborted || _request !== request || !_enabled)
+          return false;
+        // A renderer/programming failure remains a real lifecycle failure.
+        // Only acquisition failures are kept enabled for recovery.
+        if (received) throw e;
+        console.warn('[Data:GNSS] Fetch error:', e);
+        _lastError = e?.message || 'GNSS integrity source unavailable';
+        // Keep the last cells only while their evidence is inside the window.
+        expire();
+        if (e?.retryable === false) return false;
+        _failureCount = Math.min(3, _failureCount + 1);
+        const delay =
+          Number.isFinite(e?.retryAfterMs) && e.retryAfterMs > 0
+            ? e.retryAfterMs
+            : Math.min(120000, 30000 * 2 ** (_failureCount - 1));
+        _retryAt = Math.max(
+          _retryAt,
+          Math.min(Number.MAX_VALUE, now() + delay),
+        );
+        // Enabling the display succeeded. Stats still report an unavailable
+        // or degraded feed; the manager keeps its normal refresh failure lane.
+        return true;
+      } finally {
+        signal?.removeEventListener('abort', onAbort);
+        if (_request === request) _request = null;
+        scheduleCameraRefresh();
+        scheduleRetry();
+      }
+    },
+
+    destroy(viewer = _viewer) {
+      layer.disable();
+      _removeCameraEnd?.();
+      _removeCameraChanged?.();
+      _removeCameraEnd = null;
+      _removeCameraChanged = null;
+      _observations.clear();
+      _cells = [];
+      _signature = null;
+      if (_primitives) {
+        viewer.scene.groundPrimitives.remove(_primitives);
+        _primitives = null;
+      }
+      _viewer = null;
+      _lastUpdate = null;
+      _lastError = null;
+      _stale = false;
+      _coverage = null;
+      _retryAt = 0;
+      _failureCount = 0;
+      _lastQueryKey = null;
+      _manager = null;
+    },
+
+    getRowControls() {
+      return {
+        chips: [],
+        info:
+          'Regional sample · 250 nm radius · cells from visited views over 30 min' +
+          (_lastError && _retryAt
+            ? ` · ${_lastError} · Retrying automatically${
+                _retryAt <= 8640000000000000
+                  ? ` at ${new Date(_retryAt).toISOString().slice(11, 19)} UTC`
+                  : ' after provider cooldown'
+              }`
+            : ''),
+        infoTitle:
+          'Updates automatically after pan or zoom and once a minute. The public feed covers a 250-nautical-mile circle around the view centre; zooming out does not make it a worldwide snapshot. Blank cells are outside sampled coverage or have insufficient observations.',
+        legend: ['high', 'medium', 'low'].map((level, index) => ({
+          label: LEVEL_LABELS[level],
+          color: GNSS_LEVEL_COLORS[level],
+          count: _cells.filter((cell) => cell.level === level).length,
+          ...(index === 0
+            ? {
+                blurb: `Low-accuracy score = 100 × max(0, bad − 1) / total: one aircraft is discounted, so this is not the raw share. Cells need ${GNSS_MIN_AIRCRAFT} aircraft over ${provenance.window.minutes} minutes. Navigation-integrity anomalies are not a detection of jamming or spoofing.`,
+              }
+            : {}),
+        })),
+      };
+    },
+
+    getStats() {
+      return {
+        count: _cells.length,
+        levels: Object.fromEntries(
+          ['low', 'medium', 'high'].map((level) => [
+            level,
+            _cells.filter((cell) => cell.level === level).length,
+          ]),
+        ),
+        lastUpdate: _lastUpdate,
+        error: _lastError,
+        retryInSec: _retryAt
+          ? Math.max(0, Math.ceil((_retryAt - now()) / 1000))
+          : null,
+        stale: _stale,
+        provenance,
+        coverage: _coverage,
+        // Load-bearing: without an explicit boolean, layerFeedState reads the
+        // adsb.lol source name as a flights fallback (src/data/feedState.js).
+        fallback: false,
+      };
+    },
+  };
+  return layer;
+}

src/layers/gnss/ownership.test.mjs

@@ -0,0 +1,700 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import * as Cesium from 'cesium';
+import { createGnssIntegrityLayer, defaultGnssViewAnchor } from './index.js';
+import { LayerLifecycle } from '../../data/lifecycle.js';
+import { layerFeedState } from '../../data/feedState.js';
+
+const row = (hex, lat, degraded) => ({
+  hex,
+  lat,
+  lon: 30.2,
+  nic: degraded ? 0 : 8,
+  nacp: degraded ? 0 : 10,
+  gpsLost: false,
+  degraded,
+});
+
+function harness(
+  getSnapshot,
+  {
+    anchor: initialAnchor = { latitude: 50, longitude: 30 },
+    initialize = true,
+  } = {},
+) {
+  let anchor = initialAnchor;
+  const sources = [];
+  const viewer = {
+    camera: { moveEnd: new Cesium.Event(), changed: new Cesium.Event() },
+    scene: {
+      globe: { show: true },
+      groundPrimitives: {
+        add(value) {
+          sources.push(value);
+        },
+        remove(value) {
+          sources.splice(sources.indexOf(value), 1);
+          value.destroy();
+        },
+      },
+    },
+  };
+  let clock = 1_000;
+  const anchors = [];
+  const layer = createGnssIntegrityLayer({
+    // The real source refuses an undated snapshot; stubs default to a fresh one.
+    source: {
+      async getSnapshot(...args) {
+        const snapshot = await getSnapshot(...args);
+        return { ageMs: 0, ...snapshot };
+      },
+    },
+    viewAnchor: () => {
+      anchors.push(anchor);
+      return anchor;
+    },
+    now: () => clock,
+    monotonicNow: () => clock,
+  });
+  if (initialize) layer.init(viewer);
+  return {
+    layer,
+    sources,
+    anchors,
+    viewer,
+    advance(ms) {
+      clock += ms;
+    },
+    now: () => clock,
+    setAnchor(value) {
+      anchor = value;
+    },
+  };
+}
+
+const MIN = 60_000;
+const threeHealthy = () => [
+  row('a1', 1.1, false),
+  row('a2', 1.2, false),
+  row('a3', 1.3, false),
+];
+
+const flush = () => new Promise((resolve) => setImmediate(resolve));
+
+test('a globe-wide rectangle uses the visible screen centre as the query anchor', () => {
+  const anchor = defaultGnssViewAnchor({
+    scene: {
+      canvas: { clientWidth: 1000, clientHeight: 800 },
+      globe: { ellipsoid: Cesium.Ellipsoid.WGS84 },
+    },
+    camera: {
+      pickEllipsoid(pixel) {
+        assert.deepEqual(pixel, new Cesium.Cartesian2(500, 400));
+        return Cesium.Cartesian3.fromDegrees(-97, 30);
+      },
+      computeViewRectangle: () => {
+        throw new Error('centre hit must not compute a rectangle');
+      },
+    },
+  });
+  assert.ok(Math.abs(anchor.latitude - 30) < 1e-8);
+  assert.ok(Math.abs(anchor.longitude + 97) < 1e-8);
+});
+
+test('pan and zoom refresh through the manager without toggling; nearby changes are coalesced', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout', 'setInterval'] });
+  let calls = 0;
+  const h = harness(
+    async () => {
+      calls++;
+      return { rows: threeHealthy() };
+    },
+    { initialize: false },
+  );
+  const manager = new LayerLifecycle(h.viewer);
+  manager.register(h.layer);
+  h.layer.attachDataManager(manager);
+  const changes = [];
+  manager.subscribe((change) => changes.push(change.type));
+  await manager.setEnabled(h.layer.id, true);
+  h.setAnchor({ latitude: 54, longitude: 19 });
+  h.viewer.camera.changed.raiseEvent();
+  h.setAnchor({ latitude: 55, longitude: 20 });
+  h.viewer.camera.moveEnd.raiseEvent();
+  h.advance(2500);
+  t.mock.timers.tick(2500);
+  await flush();
+  assert.equal(calls, 2, 'one initial read and one read for the latest view');
+  assert.deepEqual(h.anchors.at(-1), { latitude: 55, longitude: 20 });
+  assert.ok(changes.includes('refresh-transition'));
+  assert.ok(changes.includes('refresh'));
+  assert.equal(manager.isEnabled(h.layer.id), true);
+  assert.deepEqual(h.layer.getStats().coverage, {
+    kind: 'regional',
+    latitude: 55,
+    longitude: 20,
+    radiusNm: 250,
+  });
+  assert.match(h.layer.getRowControls().info, /Regional sample.*250 nm radius/);
+  h.setAnchor({ latitude: 55.1, longitude: 20.1 });
+  h.viewer.camera.changed.raiseEvent();
+  h.advance(5000);
+  t.mock.timers.tick(5000);
+  await flush();
+  assert.equal(calls, 2, 'nearby views reuse the same query region');
+  await manager.destroyAll();
+  assert.equal(h.viewer.camera.moveEnd.numberOfListeners, 0);
+  assert.equal(h.viewer.camera.changed.numberOfListeners, 0);
+});
+
+test('movement during a pending refresh follows up at the newest view; disable cancels queued work', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  const calls = [];
+  let resolvePending;
+  const h = harness((anchor) => {
+    calls.push(anchor);
+    if (calls.length === 2)
+      return new Promise((resolve) => {
+        resolvePending = resolve;
+      });
+    return { rows: threeHealthy() };
+  });
+  h.layer.enable();
+  await h.layer.update();
+  h.setAnchor({ latitude: 54, longitude: 19 });
+  h.viewer.camera.moveEnd.raiseEvent();
+  h.advance(2500);
+  t.mock.timers.tick(2500);
+  await flush();
+  h.setAnchor({ latitude: 35, longitude: 140 });
+  h.viewer.camera.changed.raiseEvent();
+  h.advance(2500);
+  t.mock.timers.tick(2500);
+  await flush();
+  assert.equal(calls.length, 2, 'only one camera request in flight');
+  resolvePending({ rows: threeHealthy() });
+  await flush();
+  h.advance(600);
+  t.mock.timers.tick(600);
+  await flush();
+  assert.equal(calls.length, 3);
+  assert.deepEqual(calls.at(-1), { latitude: 35, longitude: 140 });
+  h.setAnchor({ latitude: 10, longitude: 10 });
+  h.viewer.camera.moveEnd.raiseEvent();
+  h.layer.disable();
+  h.advance(5000);
+  t.mock.timers.tick(5000);
+  await flush();
+  assert.equal(calls.length, 3, 'disable drains the camera timer');
+  h.layer.destroy();
+});
+
+test('the layer requires a snapshot source and cannot be initialized twice', () => {
+  assert.throws(() => createGnssIntegrityLayer({}), TypeError);
+  const { layer } = harness(async () => ({ rows: [] }));
+  assert.throws(() => layer.init({ dataSources: { add() {} } }), /already/);
+});
+
+test('an enabled refresh bins the snapshot into coloured ground cells', async () => {
+  const { layer, sources, anchors } = harness(async (anchor, { signal }) => {
+    assert.deepEqual(anchor, { latitude: 50, longitude: 30 });
+    assert.ok(signal instanceof AbortSignal);
+    return {
+      rows: [
+        row('a1', 50.1, true),
+        row('a2', 50.1, true),
+        row('a3', 50.2, false),
+        row('a4', 50.3, false),
+        row('b1', 55.1, false),
+      ],
+      stale: false,
+    };
+  });
+  assert.equal(await layer.update(), false, 'disabled layers do not fetch');
+  assert.equal(anchors.length, 0);
+  layer.enable();
+  assert.equal(sources[0].show, true);
+  assert.equal(await layer.update(), true);
+  const entities = sources[0].get(0).geometryInstances;
+  assert.equal(entities.length, 1, 'the one-aircraft cell is withheld');
+  assert.equal(entities[0].id, 'gnss-integrity:280:420');
+  assert.ok(entities[0].geometry instanceof Cesium.RectangleGeometry);
+  assert.equal(sources[0].get(0).allowPicking, false);
+  const stats = layer.getStats();
+  assert.equal(stats.count, 1);
+  assert.equal(stats.error, null);
+  assert.equal(stats.fallback, false);
+  const { legend } = layer.getRowControls();
+  assert.deepEqual(
+    legend.map(({ count }) => count),
+    [1, 0, 0],
+  );
+  assert.match(legend[0].blurb, /not a detection/);
+  assert.match(legend[0].blurb, /need 3 aircraft/);
+});
+
+test('the visible layer leads with low navigation accuracy and exposes its provenance', async () => {
+  const { layer } = harness(async () => ({ rows: [], stale: false }));
+  assert.equal(
+    layer.id,
+    'gnss-integrity',
+    'the unpublished id describes the measured state',
+  );
+  assert.equal(layer.name, 'GNSS Integrity');
+  assert.doesNotMatch(layer.name, /interference|jamming/i);
+  const { legend } = layer.getRowControls();
+  assert.deepEqual(
+    legend.map(({ label }) => label),
+    [
+      'Low-accuracy score > 10%',
+      'Low-accuracy score 2–10%',
+      'Low-accuracy score < 2%',
+    ],
+  );
+  const { blurb } = legend[0];
+  assert.match(blurb, /one aircraft is discounted/);
+  assert.match(blurb, /not the raw share/);
+  assert.match(blurb, /not a detection/);
+  assert.equal(layer.provenance.classifier.id, 'gev-nic-nacp-v2');
+  assert.equal(layer.provenance.classifier.definedBy, 'GEV');
+  assert.equal(layer.provenance.classifier.validated, false);
+  assert.equal(layer.provenance.aggregation.source, 'https://gpsjam.org/faq');
+  assert.deepEqual(layer.provenance.window, {
+    minutes: 30,
+    scope: 'visited-view',
+    cellDeg: 0.5,
+    minAircraft: 3,
+    definedBy: 'GEV',
+  });
+  assert.equal(layer.provenance.interpretation.validated, false);
+  assert.equal(layer.getStats().provenance, layer.provenance);
+});
+
+test('a failed refresh keeps the last cells and reports the error', async () => {
+  let fail = false;
+  const { layer, sources } = harness(async () => {
+    if (fail) throw new Error('adsb.lol HTTP 502');
+    return {
+      rows: [
+        row('a1', 1.1, false),
+        row('a2', 1.2, false),
+        row('a3', 1.3, false),
+      ],
+      stale: true,
+    };
+  });
+  layer.enable();
+  await layer.update();
+  assert.equal(layer.getStats().stale, true);
+  fail = true;
+  assert.equal(await layer.update(), true);
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 1);
+  assert.equal(layer.getStats().error, 'adsb.lol HTTP 502');
+  assert.equal(layer.getStats().count, 1);
+});
+
+test('observations expire with the window, and disable aborts the request in flight', async () => {
+  let pending;
+  const { layer, sources, advance } = harness(
+    (anchor, { signal }) =>
+      new Promise((resolve, reject) => {
+        pending = { resolve };
+        signal.addEventListener('abort', () => reject(signal.reason));
+      }),
+  );
+  layer.enable();
+  let result = layer.update();
+  pending.resolve({
+    rows: [row('a1', 1.1, false), row('a2', 1.2, false), row('a3', 1.3, false)],
+  });
+  assert.equal(await result, true);
+  assert.equal(layer.getStats().count, 1);
+
+  advance(31 * 60_000);
+  result = layer.update();
+  pending.resolve({ rows: [] });
+  assert.equal(await result, true);
+  assert.equal(layer.getStats().count, 0);
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 0);
+
+  result = layer.update();
+  layer.disable();
+  assert.equal(await result, false);
+  assert.equal(sources[0].show, false);
+});
+
+test('no view anchor means no request, and destroy releases the data source', async () => {
+  let calls = 0;
+  const { layer, sources } = harness(
+    async () => {
+      calls += 1;
+      return { rows: [] };
+    },
+    { anchor: null },
+  );
+  layer.enable();
+  assert.equal(
+    await layer.update(),
+    true,
+    'a settling camera is not a failure',
+  );
+  assert.equal(calls, 0);
+  assert.equal(layer.getStats().error, null);
+  layer.destroy();
+  assert.equal(sources.length, 0);
+  assert.equal(layer.getStats().count, 0);
+});
+
+test('a replayed stale snapshot keeps its observation age and expires on time', async () => {
+  // The proxy keeps answering with the snapshot it observed at t=1000.
+  const { layer, sources, advance, now } = harness(async () => ({
+    rows: threeHealthy(),
+    ageMs: now() - 1_000,
+    stale: true,
+  }));
+  layer.enable();
+  assert.equal(await layer.update(), true);
+  assert.equal(layer.getStats().count, 1);
+  advance(29 * MIN);
+  assert.equal(await layer.update(), true);
+  assert.equal(layer.getStats().count, 1);
+  advance(2 * MIN);
+  assert.equal(
+    await layer.update(),
+    true,
+    'the replay is not an error, only no evidence',
+  );
+  assert.equal(
+    layer.getStats().count,
+    0,
+    'the replay did not restart the window',
+  );
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 0);
+});
+
+test('cells expire during prolonged fetch failures', async () => {
+  let fail = false;
+  const { layer, sources, advance } = harness(async () => {
+    if (fail) throw new Error('adsb.lol HTTP 502');
+    return { rows: threeHealthy() };
+  });
+  layer.enable();
+  await layer.update();
+  fail = true;
+  advance(20 * MIN);
+  assert.equal(await layer.update(), true);
+  assert.equal(layer.getStats().count, 1, 'still inside the window');
+  advance(11 * MIN);
+  assert.equal(await layer.update(), true);
+  assert.equal(layer.getStats().count, 0);
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 0);
+  assert.equal(layer.getStats().error, 'adsb.lol HTTP 502');
+});
+
+test('cells expire while no view anchor is available', async () => {
+  let calls = 0;
+  const { layer, sources, advance, setAnchor } = harness(async () => {
+    calls += 1;
+    return { rows: threeHealthy() };
+  });
+  layer.enable();
+  await layer.update();
+  setAnchor(null);
+  advance(20 * MIN);
+  assert.equal(await layer.update(), true);
+  assert.equal(layer.getStats().count, 1);
+  advance(11 * MIN);
+  assert.equal(await layer.update(), true);
+  assert.equal(calls, 1, 'no anchor means no request');
+  assert.equal(layer.getStats().count, 0);
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 0);
+  assert.equal(layer.getStats().error, null);
+});
+
+test('re-enabling after a long disable does not show cells past the window', async () => {
+  const { layer, sources, advance } = harness(async () => ({
+    rows: threeHealthy(),
+  }));
+  layer.enable();
+  await layer.update();
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 1);
+  layer.disable();
+  advance(31 * MIN);
+  layer.enable();
+  assert.equal(layer.getStats().count, 0);
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 0);
+});
+
+const threeCells = () => ({
+  rows: [row('a1', 50.1, true), row('a2', 50.1, true), row('a3', 50.2, false)],
+});
+
+test('an identical snapshot leaves the drawn entities untouched', async () => {
+  const { layer, sources } = harness(async () => threeCells());
+  layer.enable();
+  await layer.update();
+  const first = sources[0].get(0);
+  await layer.update();
+  assert.equal(sources[0].get(0)?.geometryInstances.length ?? 0, 1);
+  assert.equal(sources[0].get(0), first);
+});
+
+test('an initial feed failure stays enabled, reports unavailable, and recovers automatically', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout', 'setInterval'] });
+  let calls = 0;
+  const h = harness(
+    async () => {
+      calls++;
+      if (calls === 1) throw new Error('adsb.lol HTTP 502');
+      return { rows: threeHealthy() };
+    },
+    { initialize: false },
+  );
+  const manager = new LayerLifecycle(h.viewer);
+  manager.register(h.layer);
+  h.layer.attachDataManager(manager);
+  const changes = [];
+  manager.subscribe((c) => changes.push(c.type));
+  assert.equal(await manager.setEnabled(h.layer.id, true), true);
+  assert.equal(manager.isEnabled(h.layer.id), true);
+  assert.equal(layerFeedState(h.layer.getStats()), 'unavailable');
+  assert.equal(h.layer.getStats().retryInSec, 30);
+  assert.match(
+    h.layer.getRowControls().info,
+    /HTTP 502.*Retrying automatically at/,
+  );
+  assert.equal(changes.includes('visibility-failed'), false);
+  assert.equal(
+    await manager.refreshLayer(h.layer.id),
+    false,
+    'feed remains honestly unhealthy during cooldown',
+  );
+  assert.equal(calls, 1, 'a manual refresh cannot bypass cooldown');
+  h.advance(30000);
+  t.mock.timers.tick(30000);
+  await flush();
+  assert.equal(calls, 2);
+  assert.equal(manager.isEnabled(h.layer.id), true);
+  assert.equal(layerFeedState(h.layer.getStats()), 'nominal');
+  assert.equal(h.layer.getStats().count, 1);
+  assert.equal(h.layer.getStats().retryInSec, null);
+  assert.doesNotMatch(h.layer.getRowControls().info, /Retrying/);
+  await manager.destroyAll();
+});
+
+test('provider cooldown is preserved across movement and toggling; disable cancels retry work', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  let calls = 0;
+  const h = harness(async () => {
+    calls++;
+    if (calls === 1)
+      throw Object.assign(new Error('Rate limited (HTTP 429)'), {
+        retryAfterMs: 3600000,
+      });
+    return { rows: threeHealthy() };
+  });
+  h.layer.enable();
+  await h.layer.update();
+  h.setAnchor({ latitude: 10, longitude: 20 });
+  h.viewer.camera.moveEnd.raiseEvent();
+  h.advance(30000);
+  t.mock.timers.tick(30000);
+  await flush();
+  await h.layer.update();
+  assert.equal(calls, 1);
+  assert.equal(h.layer.getStats().retryInSec, 3570);
+  h.layer.disable();
+  h.advance(30000);
+  t.mock.timers.tick(30000);
+  await flush();
+  h.layer.enable();
+  await h.layer.update();
+  assert.equal(calls, 1, 'reenabling does not erase a provider deadline');
+  h.advance(3540000);
+  t.mock.timers.tick(3540000);
+  await flush();
+  assert.equal(calls, 2);
+  assert.deepEqual(h.anchors.at(-1), { latitude: 10, longitude: 20 });
+  h.layer.destroy();
+
+  const stopped = harness(async () => {
+    throw new Error('network unavailable');
+  });
+  stopped.layer.enable();
+  await stopped.layer.update();
+  stopped.layer.disable();
+  stopped.advance(30000);
+  t.mock.timers.tick(30000);
+  await flush();
+  assert.equal(stopped.anchors.length, 1, 'disabled layers do not retry');
+  stopped.layer.destroy();
+});
+
+test('repeated acquisition failures back off, while genuine non-retryable failures reject startup', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  let calls = 0;
+  const h = harness(async () => {
+    calls++;
+    throw new Error('network unavailable');
+  });
+  h.layer.enable();
+  await h.layer.update();
+  assert.equal(h.layer.getStats().retryInSec, 30);
+  h.advance(30000);
+  t.mock.timers.tick(30000);
+  await flush();
+  assert.equal(h.layer.getStats().retryInSec, 60);
+  h.advance(60000);
+  t.mock.timers.tick(60000);
+  await flush();
+  assert.equal(h.layer.getStats().retryInSec, 120);
+  assert.equal(calls, 3);
+  h.layer.destroy();
+  const fatal = harness(async () => {
+    throw Object.assign(new Error('invalid request (HTTP 400)'), {
+      retryable: false,
+    });
+  });
+  fatal.layer.enable();
+  assert.equal(await fatal.layer.update(), false);
+  assert.equal(fatal.layer.getStats().retryInSec, null);
+  fatal.layer.destroy();
+});
+
+test('GERMAN: stale snapshot keeps the source observation age in row stats', async () => {
+  const h = harness(async () => ({
+    rows: threeHealthy(),
+    ageMs: 120000,
+    stale: true,
+  }));
+  h.layer.enable();
+  await h.layer.update();
+  assert.equal(h.layer.getStats().lastUpdate, h.now() - 120000);
+  h.layer.destroy();
+});
+
+test('GERMAN: camera debounce and minimum request gap are pinned', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  let calls = 0;
+  const h = harness(async () => {
+    calls++;
+    return { rows: [] };
+  });
+  h.layer.enable();
+  await h.layer.update();
+  h.setAnchor({ latitude: 51, longitude: 31 });
+  h.viewer.camera.changed.raiseEvent();
+  h.advance(2499);
+  t.mock.timers.tick(2499);
+  await flush();
+  assert.equal(calls, 1);
+  h.advance(1);
+  t.mock.timers.tick(1);
+  await flush();
+  assert.equal(calls, 2);
+  h.advance(3000);
+  h.setAnchor({ latitude: 52, longitude: 32 });
+  h.viewer.camera.changed.raiseEvent();
+  h.advance(599);
+  t.mock.timers.tick(599);
+  await flush();
+  assert.equal(calls, 2);
+  h.advance(1);
+  t.mock.timers.tick(1);
+  await flush();
+  assert.equal(calls, 3);
+  h.layer.destroy();
+});
+
+test('camera movement during initial activation waits for acquisition before following up', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  const calls = [];
+  let resolve;
+  const h = harness((anchor) => {
+    calls.push(anchor);
+    return calls.length === 1
+      ? new Promise((r) => (resolve = r))
+      : Promise.resolve({ rows: threeHealthy() });
+  });
+  h.layer.enable();
+  const initial = h.layer.update();
+  h.setAnchor({ latitude: 51, longitude: 31 });
+  h.viewer.camera.changed.raiseEvent();
+  h.advance(2500);
+  t.mock.timers.tick(2500);
+  await flush();
+  assert.equal(calls.length, 1);
+  resolve({ rows: threeHealthy() });
+  assert.equal(await initial, true);
+  h.advance(600);
+  t.mock.timers.tick(600);
+  await flush();
+  assert.equal(calls.length, 2);
+  h.layer.destroy();
+});
+
+test('monotonic camera scheduling is unaffected by wall-clock rollback', async (t) => {
+  t.mock.timers.enable({ apis: ['setTimeout'] });
+  const h = harness(async () => ({ rows: [] }));
+  h.layer.destroy();
+  let wall = 1800000000000,
+    mono = 0,
+    anchor = { latitude: 50, longitude: 30 },
+    calls = 0;
+  const layer = createGnssIntegrityLayer({
+    source: {
+      getSnapshot: async () => {
+        calls++;
+        return { rows: [], ageMs: 0 };
+      },
+    },
+    viewAnchor: () => anchor,
+    now: () => wall,
+    monotonicNow: () => mono,
+  });
+  layer.init(h.viewer);
+  layer.enable();
+  await layer.update();
+  wall -= 3600000;
+  mono = 3000;
+  anchor = { latitude: 51, longitude: 31 };
+  h.viewer.camera.changed.raiseEvent();
+  mono += 600;
+  t.mock.timers.tick(600);
+  await flush();
+  assert.equal(calls, 2);
+  layer.destroy();
+});
+
+test('GNSS fill emits no pick-pass commands but keeps normal rendering', async (t) => {
+  const h = harness(async () => ({ rows: threeHealthy() }));
+  h.layer.enable();
+  await h.layer.update();
+  const fill = h.sources[0].get(0);
+  let updates = 0;
+  t.mock.method(Cesium.GroundPrimitive.prototype, 'update', () => updates++);
+  fill.update({ passes: { pick: true } });
+  assert.equal(updates, 0);
+  fill.update({ passes: { render: true, pick: false } });
+  assert.equal(updates, 1);
+  h.layer.destroy();
+  assert.equal(fill.isDestroyed(), true);
+});
+
+test('view anchor falls back to rectangle, then nadir, then no camera', () => {
+  assert.equal(defaultGnssViewAnchor({}), null);
+  const viewer = {
+    camera: {
+      computeViewRectangle: () => Cesium.Rectangle.fromDegrees(20, 40, 22, 42),
+    },
+  };
+  const rectangleAnchor = defaultGnssViewAnchor(viewer);
+  assert.ok(Math.abs(rectangleAnchor.latitude - 41) < 1e-10);
+  assert.ok(Math.abs(rectangleAnchor.longitude - 21) < 1e-10);
+  viewer.camera = {
+    positionCartographic: Cesium.Cartographic.fromDegrees(21, 41),
+  };
+  const nadirAnchor = defaultGnssViewAnchor(viewer);
+  assert.ok(Math.abs(nadirAnchor.latitude - 41) < 1e-10);
+  assert.ok(Math.abs(nadirAnchor.longitude - 21) < 1e-10);
+});

src/layers/gnss/records.js

@@ -0,0 +1,318 @@
+/**
+ * Low navigation accuracy reported by ADS-B aircraft, binned into cells.
+ *
+ * Aircraft broadcasting DO-260 version 1/2 ADS-B report how much they trust
+ * their own position: NIC (integrity containment radius) and NACp (position
+ * accuracy). A cluster of aircraft reporting low values in one area is a
+ * navigation-integrity anomaly. Jamming or spoofing is one common cause, so
+ * such clusters are a well-known public proxy for GNSS interference, but
+ * avionics faults and old transponders also report low values: suspected
+ * interference is a second, unvalidated interpretation, never the primary
+ * state.
+ *
+ * Three separately sourced parts make up the method (see `gnssProvenance`):
+ * - Per-aircraft classifier, defined by GEV: aircraft-reported NIC < 7
+ *   (except unknown NIC 0 with NACp >= 10) or NACp < 8 (borrowed
+ *   from the US 14 CFR 91.227(c) ADS-B Out performance minima, which are not
+ *   a published interference classifier) or the readsb/tar1090 `gpsOkBefore`
+ *   flag. gpsjam.org does not publish its per-aircraft threshold.
+ * - Cell aggregation: gpsjam.org's published formula and 2% / 10% bands.
+ * - Window: a GEV-defined rolling 30 minutes over the views the user visits.
+ */
+
+/** Position source can switch to MLAT after GPS loss; quality must remain aircraft-reported. */
+const QUALIFYING_TYPES = new Set(['adsb_icao', 'mlat']);
+/** Restrict to decoded DO-260A/B quality fields; readsb does not decode v3 quality as v3. */
+const QUALIFYING_VERSIONS = new Set([1, 2]);
+/** NIC below 7: containment radius of 0.2 NM or more (below the US 91.227 ADS-B Out minimum). GEV threshold. */
+export const GNSS_NIC_THRESHOLD = 7;
+/** NACp below 8: position uncertainty of 93 m or more (below the US 91.227 minimum). GEV threshold. */
+export const GNSS_NACP_THRESHOLD = 8;
+/** Positions older than this are not current evidence of the local sky. */
+const MAX_POSITION_AGE_S = 60;
+/** Cell edge in degrees: roughly 55 km north-south, similar in area to an H3 res-4 cell. */
+export const GNSS_CELL_DEG = 0.5;
+/** Hide sparse one- and two-aircraft cells; the aggregation separately discounts one bad report. */
+export const GNSS_MIN_AIRCRAFT = 3;
+/** Rolling window over which aircraft seen in a cell are counted. */
+export const GNSS_WINDOW_MS = 30 * 60_000;
+/** gpsjam.org band edges, in percent of aircraft (after discounting one). */
+export const GNSS_MEDIUM_PERCENT = 2;
+export const GNSS_HIGH_PERCENT = 10;
+
+/** Primary cell state: what the data shows (low navigation accuracy). */
+export const GNSS_ANOMALY_STATE = 'navigation-integrity-anomaly';
+export const GNSS_NOMINAL_STATE = 'nominal';
+/** Secondary, unvalidated reading of an anomaly cell. */
+export const GNSS_INTERPRETATION = 'suspected-gnss-interference';
+
+/** The per-aircraft rule; GEV-defined and not validated against known events. */
+export const GNSS_CLASSIFIER = Object.freeze({
+  id: 'gev-nic-nacp-v2',
+  rule: `gpsOkBefore set || aircraft-reported NACp < ${GNSS_NACP_THRESHOLD} || (aircraft-reported NIC < ${GNSS_NIC_THRESHOLD} && !(NIC === 0 && NACp >= 10))`,
+  basis: '14 CFR 91.227(c) ADS-B Out performance minima (US regulation)',
+  definedBy: 'GEV',
+  validated: false,
+});
+
+/**
+ * Machine-readable provenance of the cell output: which part of the method
+ * comes from where, and which parts are unvalidated.
+ *
+ * @param {{windowMs?: number}} [options] The window the layer actually uses.
+ */
+export function gnssProvenance({ windowMs = GNSS_WINDOW_MS } = {}) {
+  return Object.freeze({
+    classifier: GNSS_CLASSIFIER,
+    aggregation: Object.freeze({
+      id: 'gpsjam-cell-bands',
+      formula: '100 * max(0, bad - 1) / total',
+      bands: Object.freeze([GNSS_MEDIUM_PERCENT, GNSS_HIGH_PERCENT]),
+      source: 'https://gpsjam.org/faq',
+      definedBy: 'gpsjam.org',
+    }),
+    window: Object.freeze({
+      minutes: windowMs / 60_000,
+      scope: 'visited-view',
+      cellDeg: GNSS_CELL_DEG,
+      minAircraft: GNSS_MIN_AIRCRAFT,
+      definedBy: 'GEV',
+    }),
+    state: Object.freeze({
+      id: GNSS_ANOMALY_STATE,
+      meaning: 'low navigation accuracy reported by ADS-B aircraft',
+    }),
+    interpretation: Object.freeze({
+      id: GNSS_INTERPRETATION,
+      validated: false,
+      note: 'one possible cause of an anomaly cell; avionics faults also report low values',
+    }),
+  });
+}
+
+/** Provenance at the default window. */
+export const GNSS_PROVENANCE = gnssProvenance();
+
+const HEX_PATTERN = /^~?[0-9a-f]{6}$/;
+
+const finite = (value) => typeof value === 'number' && Number.isFinite(value);
+
+/**
+ * Reduce one adsb.lol / readsb `aircraft.json`-style payload to the integrity
+ * facts the layer needs. Returns null when the payload has no aircraft array.
+ *
+ * @param {{ac?: object[], now?: number}} payload - readsb-style snapshot.
+ * @returns {{hex: string, lat: number, lon: number, nic: number|null, nacp: number|null, gpsLost: boolean, degraded: boolean}[]|null}
+ */
+export function normalizeGnssAircraft(payload) {
+  if (!Array.isArray(payload?.ac)) return null;
+  const rows = [];
+  const seen = new Set();
+  for (const aircraft of payload.ac) {
+    if (!aircraft || typeof aircraft !== 'object') continue;
+    const hex = typeof aircraft.hex === 'string' ? aircraft.hex : '';
+    if (!HEX_PATTERN.test(hex) || seen.has(hex)) continue;
+    if (!QUALIFYING_TYPES.has(aircraft.type)) continue;
+    if (!QUALIFYING_VERSIONS.has(aircraft.version)) continue;
+    if (aircraft.alt_baro === 'ground' || !finite(aircraft.alt_baro)) continue;
+    let { lat, lon } = aircraft;
+    const derived = (field) =>
+      aircraft.tisb?.includes(field) || aircraft.mlat?.includes(field);
+    const nic = finite(aircraft.nic) && !derived('nic') ? aircraft.nic : null;
+    const nacp =
+      finite(aircraft.nac_p) && !derived('nac_p') ? aircraft.nac_p : null;
+    if (!finite(lat) || Math.abs(lat) > 90) continue;
+    if (!finite(lon) || Math.abs(lon) > 180) continue;
+    // Only a position confirmed within the last minute is current evidence; a
+    // missing, invalid or negative age confirms nothing.
+    const age = aircraft.seen_pos;
+    if (!finite(age) || age < 0 || age > MAX_POSITION_AGE_S) continue;
+    // readsb exposes the flag while GPS is lost (15 s–15 min after the
+    // last good position), and removes it on recovery. Locate that evidence
+    // at the last good GNSS position, rather than a later MLAT estimate.
+    const gpsLost = finite(aircraft.gpsOkBefore) && aircraft.gpsOkBefore > 0;
+    if (nic === null && nacp === null && !gpsLost) continue;
+    if (
+      gpsLost &&
+      finite(aircraft.gpsOkLat) &&
+      Math.abs(aircraft.gpsOkLat) <= 90 &&
+      finite(aircraft.gpsOkLon) &&
+      Math.abs(aircraft.gpsOkLon) <= 180
+    ) {
+      lat = aircraft.gpsOkLat;
+      lon = aircraft.gpsOkLon;
+    }
+    seen.add(hex);
+    rows.push({
+      hex,
+      lat,
+      lon,
+      nic,
+      nacp,
+      gpsLost,
+      degraded:
+        gpsLost ||
+        (nacp !== null && nacp < GNSS_NACP_THRESHOLD) ||
+        (nic !== null &&
+          nic < GNSS_NIC_THRESHOLD &&
+          !(nic === 0 && nacp !== null && nacp >= 10)),
+    });
+  }
+  return rows;
+}
+
+/** Stable key of the cell containing a position. */
+export function gnssCellKey(lat, lon, cellDeg = GNSS_CELL_DEG) {
+  const row = Math.floor((Math.min(lat, 89.999999) + 90) / cellDeg);
+  const col = Math.floor((Math.min(lon, 179.999999) + 180) / cellDeg);
+  return `${row}:${col}`;
+}
+
+/**
+ * Fold one snapshot into a rolling observation store. Each aircraft counts
+ * once per cell per window. Presence and degraded evidence age separately: a
+ * degraded report keeps the aircraft degraded in that cell for one window
+ * after the report itself, however many healthy reports follow, so an
+ * aircraft that loses GNSS mid-cell is not averaged away and a recovered one
+ * is not held degraded forever.
+ *
+ * Every row is dated by when the snapshot was observed, not when it arrived:
+ * replaying a cached or stale snapshot never makes its evidence younger, and
+ * a snapshot older than the window adds nothing.
+ *
+ * @param {Map<string, {cell: string, seenAt: number, degradedAt: number|null}>} store
+ * @param {ReturnType<typeof normalizeGnssAircraft>} rows
+ * @param {number} nowMs
+ * @param {{windowMs?: number, cellDeg?: number, observedAt?: number}} [options]
+ *   `observedAt` is the snapshot's observation time (defaults to `nowMs`;
+ *   a future time is clamped to `nowMs`, a non-finite one adds nothing).
+ * @returns {Map} The same store, pruned to the window.
+ */
+export function accumulateGnssObservations(
+  store,
+  rows,
+  nowMs,
+  {
+    windowMs = GNSS_WINDOW_MS,
+    cellDeg = GNSS_CELL_DEG,
+    observedAt = nowMs,
+  } = {},
+) {
+  const at = Number.isFinite(observedAt) ? Math.min(observedAt, nowMs) : NaN;
+  if (Number.isFinite(at) && nowMs - at <= windowMs) {
+    for (const row of rows || []) {
+      if (!Number.isFinite(row?.lat) || !Number.isFinite(row?.lon)) continue;
+      const cell = gnssCellKey(row.lat, row.lon, cellDeg);
+      const key = `${row.hex}|${cell}`;
+      const previous = store.get(key);
+      const previousDegradedAt = previous?.degradedAt ?? null;
+      store.set(key, {
+        cell,
+        seenAt: Math.max(previous?.seenAt ?? at, at),
+        degradedAt: row.degraded
+          ? Math.max(previousDegradedAt ?? at, at)
+          : previousDegradedAt,
+      });
+    }
+  }
+  return pruneGnssObservations(store, nowMs, { windowMs });
+}
+
+/**
+ * Drop observations older than the window and degraded evidence older than
+ * the window, without adding anything. Used when no fresh snapshot arrives.
+ *
+ * @param {Map<string, {cell: string, seenAt: number, degradedAt: number|null}>} store
+ * @param {number} nowMs
+ * @param {{windowMs?: number}} [options]
+ * @returns {Map} The same store.
+ */
+export function pruneGnssObservations(
+  store,
+  nowMs,
+  { windowMs = GNSS_WINDOW_MS } = {},
+) {
+  for (const [key, entry] of store) {
+    if (nowMs - entry.seenAt > windowMs) store.delete(key);
+    else if (entry.degradedAt != null && nowMs - entry.degradedAt > windowMs)
+      store.set(key, { ...entry, degradedAt: null });
+  }
+  return store;
+}
+
+/**
+ * Navigation-integrity level of a cell, using gpsjam.org's published cell
+ * formula and bands: the first degraded aircraft is discounted to limit false
+ * positives, then under 2% is low, 2–10% medium and over 10% high. Medium and
+ * high cells are navigation-integrity anomalies.
+ */
+export function gnssIntegrityLevel(total, degraded) {
+  const percent = total > 0 ? (100 * Math.max(0, degraded - 1)) / total : 0;
+  const level =
+    percent > GNSS_HIGH_PERCENT
+      ? 'high'
+      : percent >= GNSS_MEDIUM_PERCENT
+        ? 'medium'
+        : 'low';
+  const anomaly = level !== 'low';
+  return {
+    percent,
+    level,
+    state: anomaly ? GNSS_ANOMALY_STATE : GNSS_NOMINAL_STATE,
+    interpretation: anomaly ? GNSS_INTERPRETATION : null,
+  };
+}
+
+/**
+ * Aggregate the observation store into displayable cells. Expects a store
+ * already pruned to the window by `accumulateGnssObservations` or
+ * `pruneGnssObservations`.
+ *
+ * @returns {{id: string, south: number, west: number, north: number, east: number, lat: number, lon: number, aircraft: number, degraded: number, percentDegraded: number, level: 'low'|'medium'|'high', state: string, interpretation: string|null}[]}
+ */
+export function binGnssCells(
+  store,
+  { cellDeg = GNSS_CELL_DEG, minAircraft = GNSS_MIN_AIRCRAFT } = {},
+) {
+  const tallies = new Map();
+  for (const { cell, degradedAt } of store.values()) {
+    const tally = tallies.get(cell) || { aircraft: 0, degraded: 0 };
+    tally.aircraft += 1;
+    if (degradedAt != null) tally.degraded += 1;
+    tallies.set(cell, tally);
+  }
+  const cells = [];
+  for (const [id, { aircraft, degraded }] of tallies) {
+    if (aircraft < minAircraft) continue;
+    const [row, col] = id.split(':').map(Number);
+    const south = row * cellDeg - 90;
+    const west = col * cellDeg - 180;
+    const { percent, level, state, interpretation } = gnssIntegrityLevel(
+      aircraft,
+      degraded,
+    );
+    cells.push({
+      id,
+      south,
+      west,
+      north: south + cellDeg,
+      east: west + cellDeg,
+      lat: south + cellDeg / 2,
+      lon: west + cellDeg / 2,
+      aircraft,
+      degraded,
+      percentDegraded: Math.round(percent * 10) / 10,
+      level,
+      state,
+      interpretation,
+    });
+  }
+  return cells.sort((a, b) => a.id.localeCompare(b.id));
+}
+
+/** Legend colors: gpsjam's green / amber / red convention. */
+export const GNSS_LEVEL_COLORS = Object.freeze({
+  low: '#3fb950',
+  medium: '#e3b341',
+  high: '#f85149',
+});

src/layers/gnss/records.test.mjs

@@ -0,0 +1,491 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  accumulateGnssObservations,
+  binGnssCells,
+  GNSS_CLASSIFIER,
+  GNSS_PROVENANCE,
+  GNSS_WINDOW_MS,
+  gnssCellKey,
+  gnssIntegrityLevel,
+  gnssProvenance,
+  normalizeGnssAircraft,
+  pruneGnssObservations,
+} from './records.js';
+
+const aircraft = (overrides = {}) => ({
+  hex: '4ca7b5',
+  type: 'adsb_icao',
+  version: 2,
+  alt_baro: 36000,
+  lat: 50.1,
+  lon: 19.9,
+  nic: 8,
+  nac_p: 10,
+  seen_pos: 1.2,
+  ...overrides,
+});
+
+test('normalization keeps airborne decoded ADS-B v1/v2 quality with current positions', () => {
+  const rows = normalizeGnssAircraft({
+    ac: [
+      aircraft(),
+      aircraft({
+        hex: '000001',
+        type: 'mlat',
+        nic: undefined,
+        nac_p: undefined,
+      }),
+      aircraft({ hex: '000002', type: 'tisb_icao' }),
+      aircraft({ hex: '000003', version: 0 }),
+      aircraft({ hex: '000004', alt_baro: 'ground' }),
+      aircraft({ hex: '000005', seen_pos: 120 }),
+      aircraft({ hex: '000006', nic: undefined, nac_p: undefined }),
+      aircraft({ hex: '000007', lat: 95 }),
+      aircraft({ hex: '000008', version: undefined }),
+      // Only DO-260A/B (versions 1 and 2) define NIC and NACp.
+      aircraft({ hex: '000009', version: 3 }),
+      aircraft({ hex: '00000a', version: '2' }),
+      aircraft({ hex: '00000b', version: 1.5 }),
+      // A position is current only when its age is known, finite and 0..60 s.
+      aircraft({ hex: '00000c', seen_pos: undefined }),
+      aircraft({ hex: '00000d', seen_pos: null }),
+      aircraft({ hex: '00000e', seen_pos: -0.5 }),
+      aircraft({ hex: '00000f', seen_pos: '1.2' }),
+      aircraft({ hex: '000010', seen_pos: Number.NaN }),
+      aircraft({ hex: '000011', seen_pos: 60.1 }),
+      aircraft({ hex: 'not-hex' }),
+      aircraft(),
+      // A non-ICAO (`~`) address still self-reports over 1090ES ADS-B.
+      aircraft({ hex: '~a1b2c3' }),
+      // Version 1, and both ends of the position-age range, qualify.
+      aircraft({ hex: 'b00001', version: 1, seen_pos: 0 }),
+      aircraft({ hex: 'b00002', seen_pos: 60 }),
+      null,
+    ],
+  });
+  assert.deepEqual(rows, [
+    {
+      hex: '4ca7b5',
+      lat: 50.1,
+      lon: 19.9,
+      nic: 8,
+      nacp: 10,
+      gpsLost: false,
+      degraded: false,
+    },
+    {
+      hex: '~a1b2c3',
+      lat: 50.1,
+      lon: 19.9,
+      nic: 8,
+      nacp: 10,
+      gpsLost: false,
+      degraded: false,
+    },
+    ...['b00001', 'b00002'].map((hex) => ({
+      hex,
+      lat: 50.1,
+      lon: 19.9,
+      nic: 8,
+      nacp: 10,
+      gpsLost: false,
+      degraded: false,
+    })),
+  ]);
+  assert.equal(normalizeGnssAircraft({}), null);
+  assert.equal(normalizeGnssAircraft(null), null);
+});
+
+test('low NIC, low NACp or a readsb GPS-loss flag each mark an aircraft degraded', () => {
+  const rows = normalizeGnssAircraft({
+    ac: [
+      aircraft({ hex: 'a00001', nic: 6 }),
+      aircraft({ hex: 'a00002', nac_p: 7 }),
+      aircraft({ hex: 'a00003', gpsOkBefore: 1790690000.1 }),
+      aircraft({ hex: 'a00004', nic: 7, nac_p: 8 }),
+    ],
+  });
+  assert.deepEqual(
+    rows.map(({ hex, degraded, gpsLost }) => [hex, degraded, gpsLost]),
+    [
+      ['a00001', true, false],
+      ['a00002', true, false],
+      ['a00003', true, true],
+      ['a00004', false, false],
+    ],
+  );
+});
+
+test('cell keys are stable half-degree bins, clamped at the poles and antimeridian', () => {
+  assert.equal(gnssCellKey(50.1, 19.9), gnssCellKey(50.4, 19.6));
+  assert.notEqual(gnssCellKey(50.1, 19.9), gnssCellKey(50.6, 19.9));
+  assert.equal(gnssCellKey(90, 180), gnssCellKey(89.9, 179.9));
+  assert.equal(gnssCellKey(-90, -180), '0:0');
+  // Just south-west of the origin falls in the last cell before 0°, not cell 0.
+  assert.equal(gnssCellKey(-0.1, -0.1), '179:359');
+});
+
+test('integrity level follows the gpsjam.org published cell formula and bands', () => {
+  const nominal = {
+    percent: 0,
+    level: 'low',
+    state: 'nominal',
+    interpretation: null,
+  };
+  assert.deepEqual(gnssIntegrityLevel(10, 0), nominal);
+  // One degraded aircraft is always discounted.
+  assert.deepEqual(gnssIntegrityLevel(10, 1), nominal);
+  assert.equal(gnssIntegrityLevel(50, 2).level, 'medium');
+  assert.equal(gnssIntegrityLevel(10, 2).level, 'medium');
+  assert.equal(gnssIntegrityLevel(10, 3).level, 'high');
+  assert.equal(gnssIntegrityLevel(0, 0).level, 'low');
+});
+
+test('the primary state is a navigation-integrity anomaly; interference is only the secondary reading', () => {
+  for (const [total, bad] of [
+    [50, 2],
+    [10, 3],
+  ]) {
+    const { state, interpretation } = gnssIntegrityLevel(total, bad);
+    assert.equal(state, 'navigation-integrity-anomaly');
+    assert.equal(interpretation, 'suspected-gnss-interference');
+  }
+  const store = new Map();
+  accumulateGnssObservations(
+    store,
+    [
+      { hex: 'h1', lat: 10.1, lon: 10.1, degraded: true },
+      { hex: 'h2', lat: 10.2, lon: 10.2, degraded: true },
+      { hex: 'h3', lat: 10.3, lon: 10.3, degraded: false },
+    ],
+    0,
+  );
+  const [cell] = binGnssCells(store);
+  assert.equal(cell.level, 'high');
+  assert.equal(cell.state, 'navigation-integrity-anomaly');
+  assert.equal(cell.interpretation, 'suspected-gnss-interference');
+  for (const key of Object.keys(cell))
+    assert.doesNotMatch(key, /interference|jamming|spoof/i);
+});
+
+test('provenance separates the GEV classifier from the gpsjam aggregation and the GEV window', () => {
+  assert.deepEqual(GNSS_PROVENANCE.classifier, {
+    id: 'gev-nic-nacp-v2',
+    rule: 'gpsOkBefore set || aircraft-reported NACp < 8 || (aircraft-reported NIC < 7 && !(NIC === 0 && NACp >= 10))',
+    basis: '14 CFR 91.227(c) ADS-B Out performance minima (US regulation)',
+    definedBy: 'GEV',
+    validated: false,
+  });
+  assert.equal(GNSS_PROVENANCE.classifier, GNSS_CLASSIFIER);
+  assert.deepEqual(GNSS_PROVENANCE.aggregation, {
+    id: 'gpsjam-cell-bands',
+    formula: '100 * max(0, bad - 1) / total',
+    bands: [2, 10],
+    source: 'https://gpsjam.org/faq',
+    definedBy: 'gpsjam.org',
+  });
+  assert.deepEqual(GNSS_PROVENANCE.window, {
+    minutes: 30,
+    scope: 'visited-view',
+    cellDeg: 0.5,
+    minAircraft: 3,
+    definedBy: 'GEV',
+  });
+  assert.equal(GNSS_PROVENANCE.state.id, 'navigation-integrity-anomaly');
+  assert.equal(
+    GNSS_PROVENANCE.interpretation.id,
+    'suspected-gnss-interference',
+  );
+  assert.equal(GNSS_PROVENANCE.interpretation.validated, false);
+  assert.ok(Object.isFrozen(GNSS_PROVENANCE));
+  assert.ok(Object.isFrozen(GNSS_PROVENANCE.aggregation.bands));
+  // The bands in provenance are the ones the level function applies.
+  const [medium, high] = GNSS_PROVENANCE.aggregation.bands;
+  assert.equal(gnssIntegrityLevel(100, 1 + medium).level, 'medium');
+  assert.equal(gnssIntegrityLevel(100, 1 + high).level, 'medium');
+  assert.equal(gnssIntegrityLevel(100, 2 + high).level, 'high');
+  assert.equal(gnssProvenance({ windowMs: 10 * 60_000 }).window.minutes, 10);
+});
+
+test('observations count each aircraft once per cell and expire after the window', () => {
+  const store = new Map();
+  const at = (lat, hex, degraded) => ({ hex, lat, lon: 20.1, degraded });
+  accumulateGnssObservations(
+    store,
+    [at(50.1, 'a1', true), at(50.2, 'a2', false), at(50.3, 'a3', false)],
+    0,
+    { windowMs: 1000 },
+  );
+  // a1 recovers inside the same cell: it stays degraded for the window.
+  accumulateGnssObservations(store, [at(50.2, 'a1', false)], 500, {
+    windowMs: 1000,
+  });
+  let [cell] = binGnssCells(store);
+  assert.equal(cell.aircraft, 3);
+  assert.equal(cell.degraded, 1);
+  assert.equal(cell.level, 'low');
+  assert.deepEqual(
+    [cell.south, cell.west, cell.north, cell.east],
+    [50, 20, 50.5, 20.5],
+  );
+
+  accumulateGnssObservations(store, [], 1200, { windowMs: 1000 });
+  assert.equal(store.size, 1);
+  assert.deepEqual(binGnssCells(store), []);
+});
+
+const MIN = 60_000;
+const report = (hex, degraded, lat = 50.1) => ({
+  hex,
+  lat,
+  lon: 20.1,
+  degraded,
+});
+const entry = (store, hex) =>
+  [...store].find(([key]) => key.startsWith(`${hex}|`))?.[1];
+
+test('degraded evidence expires one window after the degraded report, despite continuing healthy reports', () => {
+  const store = new Map();
+  accumulateGnssObservations(store, [report('a1', true)], 0);
+  // a1 keeps reporting healthy every minute in the same cell.
+  for (let minute = 1; minute <= 30; minute += 1)
+    accumulateGnssObservations(store, [report('a1', false)], minute * MIN);
+  assert.equal(entry(store, 'a1').seenAt, 30 * MIN);
+  assert.equal(
+    entry(store, 'a1').degradedAt,
+    0,
+    'healthy reports do not refresh the degraded evidence',
+  );
+  accumulateGnssObservations(store, [report('a1', false)], 31 * MIN);
+  assert.deepEqual(entry(store, 'a1'), {
+    cell: gnssCellKey(50.1, 20.1),
+    seenAt: 31 * MIN,
+    degradedAt: null,
+  });
+  // A new degraded report starts its own window.
+  accumulateGnssObservations(store, [report('a1', true)], 32 * MIN);
+  assert.equal(entry(store, 'a1').degradedAt, 32 * MIN);
+  accumulateGnssObservations(store, [report('a1', false)], 40 * MIN);
+  assert.equal(entry(store, 'a1').degradedAt, 32 * MIN);
+});
+
+test('a degraded cell turns healthy once its degraded evidence is older than the window', () => {
+  const store = new Map();
+  const healthy = [report('a2', false), report('a3', false)];
+  accumulateGnssObservations(
+    store,
+    [report('a1', true), report('b1', true), ...healthy],
+    0,
+  );
+  assert.equal(binGnssCells(store)[0].level, 'high');
+  for (let minute = 10; minute <= 30; minute += 10)
+    accumulateGnssObservations(
+      store,
+      [report('a1', false), report('b1', false), ...healthy],
+      minute * MIN,
+    );
+  assert.equal(binGnssCells(store)[0].degraded, 2);
+  accumulateGnssObservations(
+    store,
+    [report('a1', false), report('b1', false), ...healthy],
+    31 * MIN,
+  );
+  const [cell] = binGnssCells(store);
+  assert.equal(cell.aircraft, 4);
+  assert.equal(cell.degraded, 0);
+  assert.equal(cell.level, 'low');
+});
+
+test('an aircraft returning after the window starts fresh', () => {
+  const store = new Map();
+  accumulateGnssObservations(store, [report('a1', true)], 0);
+  // a1 leaves; nothing is heard from it for longer than the window.
+  accumulateGnssObservations(store, [], 31 * MIN);
+  assert.equal(store.size, 0);
+  accumulateGnssObservations(store, [report('a1', false)], 32 * MIN);
+  assert.deepEqual(entry(store, 'a1'), {
+    cell: gnssCellKey(50.1, 20.1),
+    seenAt: 32 * MIN,
+    degradedAt: null,
+  });
+  // Returning degraded dates the evidence from the new report.
+  const again = new Map();
+  accumulateGnssObservations(again, [report('a9', true)], 0);
+  accumulateGnssObservations(again, [], 31 * MIN);
+  accumulateGnssObservations(again, [report('a9', true)], 33 * MIN);
+  assert.equal(entry(again, 'a9').degradedAt, 33 * MIN);
+});
+
+test('an aircraft heard healthy right after the window drops its stale degraded evidence', () => {
+  // No prune runs in between: the old entry is still in the store when the
+  // healthy report arrives, so the new report alone must not carry it over.
+  const store = new Map();
+  accumulateGnssObservations(store, [report('a1', true)], 0);
+  accumulateGnssObservations(store, [report('a1', false)], 31 * MIN);
+  assert.deepEqual(entry(store, 'a1'), {
+    cell: gnssCellKey(50.1, 20.1),
+    seenAt: 31 * MIN,
+    degradedAt: null,
+  });
+  // Exactly one window after the degraded report it still counts.
+  const edge = new Map();
+  accumulateGnssObservations(edge, [report('a1', true)], 0);
+  accumulateGnssObservations(edge, [report('a1', false)], 30 * MIN);
+  assert.equal(entry(edge, 'a1').degradedAt, 0);
+});
+
+test('rows are dated by the snapshot observation time, so a replay never restarts the window', () => {
+  const store = new Map();
+  const snapshot = [report('a1', true), report('a2', false)];
+  accumulateGnssObservations(store, snapshot, 0, { observedAt: 0 });
+  // The same snapshot replayed (cached or stale) 29 minutes later.
+  accumulateGnssObservations(store, snapshot, 29 * MIN, { observedAt: 0 });
+  assert.equal(entry(store, 'a1').seenAt, 0);
+  assert.equal(entry(store, 'a1').degradedAt, 0);
+  accumulateGnssObservations(store, snapshot, 31 * MIN, { observedAt: 0 });
+  assert.equal(store.size, 0, 'a replay older than the window adds nothing');
+
+  // An older replay never moves an entry's age backwards either.
+  accumulateGnssObservations(store, snapshot, 40 * MIN);
+  accumulateGnssObservations(store, [report('a2', true)], 41 * MIN, {
+    observedAt: 35 * MIN,
+  });
+  assert.equal(entry(store, 'a2').seenAt, 40 * MIN);
+  assert.equal(entry(store, 'a2').degradedAt, 35 * MIN);
+
+  // A future time is clamped to now; an undated snapshot adds nothing.
+  accumulateGnssObservations(store, [report('f1', true)], 50 * MIN, {
+    observedAt: 99 * MIN,
+  });
+  assert.equal(entry(store, 'f1').seenAt, 50 * MIN);
+  for (const observedAt of [null, Number.NaN])
+    accumulateGnssObservations(store, [report('u1', true)], 50 * MIN, {
+      observedAt,
+    });
+  assert.equal(entry(store, 'u1'), undefined);
+});
+
+test('pruning without new rows drops expired observations and expired degraded evidence', () => {
+  const store = new Map();
+  accumulateGnssObservations(store, [report('a1', true)], 0);
+  accumulateGnssObservations(store, [report('a1', false)], 20 * MIN);
+  accumulateGnssObservations(store, [report('a2', false)], 0);
+  assert.equal(pruneGnssObservations(store, 31 * MIN), store);
+  assert.deepEqual(
+    [...store.keys()].map((key) => key.split('|')[0]),
+    ['a1'],
+  );
+  assert.equal(entry(store, 'a1').degradedAt, null);
+  pruneGnssObservations(store, 51 * MIN);
+  assert.equal(store.size, 0);
+  assert.equal(GNSS_WINDOW_MS, 30 * MIN);
+});
+
+test('rows without finite coordinates never key a cell', () => {
+  const store = new Map();
+  accumulateGnssObservations(
+    store,
+    [
+      { hex: 'n1', lat: Number.NaN, lon: 10.1, degraded: true },
+      { hex: 'n2', lat: 10.1, lon: '10.1', degraded: true },
+      null,
+    ],
+    0,
+  );
+  assert.equal(store.size, 0);
+});
+
+test('cells below the minimum aircraft count are withheld', () => {
+  const store = new Map();
+  accumulateGnssObservations(
+    store,
+    [
+      { hex: 'b1', lat: 10.1, lon: 10.1, degraded: true },
+      { hex: 'b2', lat: 10.2, lon: 10.2, degraded: true },
+    ],
+    0,
+  );
+  assert.deepEqual(binGnssCells(store), []);
+  const [cell] = binGnssCells(store, { minAircraft: 2 });
+  assert.equal(cell.level, 'high');
+  assert.equal(cell.percentDegraded, 50);
+});
+
+test('MLAT GPS-loss evidence uses the last good GNSS location and ignores MLAT NIC', () => {
+  const [row] = normalizeGnssAircraft({
+    ac: [
+      aircraft({
+        type: 'mlat',
+        nac_p: 0,
+        nic: 0,
+        mlat: ['lat', 'lon', 'nic'],
+        gpsOkBefore: 1800000000,
+        gpsOkLat: 54.2,
+        gpsOkLon: 19.3,
+      }),
+    ],
+  });
+  assert.ok(row);
+  assert.equal(row.lat, 54.2);
+  assert.equal(row.lon, 19.3);
+  assert.equal(row.nic, null);
+  assert.equal(row.degraded, true);
+  const [healthy] = normalizeGnssAircraft({
+    ac: [aircraft({ type: 'mlat', nic: 0, mlat: ['nic'] })],
+  });
+  assert.equal(healthy.degraded, false);
+});
+
+test('TIS-B accuracy fields and unknown containment do not manufacture anomalies', () => {
+  const rows = normalizeGnssAircraft({
+    ac: [
+      aircraft({ hex: 'a00001', nac_p: 0, tisb: ['nac_p'] }),
+      aircraft({ hex: 'a00002', nic: 0, tisb: ['nic'] }),
+      aircraft({ hex: 'a00003', nic: 0, nac_p: 10 }),
+      aircraft({ hex: 'a00004', nic: 0, nac_p: 8 }),
+      aircraft({ hex: 'a00005', nic: 6, nac_p: 10 }),
+    ],
+  });
+  assert.deepEqual(
+    rows.map((r) => r.degraded),
+    [false, false, false, true, true],
+  );
+});
+
+// Quality-field subsets captured from public adsb.lol US point responses on
+// 2026-10-14 (34,-118 and 41,-73, radius 250 nm), ODbL 1.0 / adsb.lol contributors.
+// Only field provenance is reused; the airborne ADS-B envelopes are synthetic.
+test('public US quality-field fixtures do not turn rebroadcast accuracy into own accuracy', () => {
+  const tisbQuality = {
+    nic: 0,
+    nac_p: 0,
+    tisb: [
+      'altitude',
+      'alt_baro',
+      'gs',
+      'track',
+      'geom_rate',
+      'lat',
+      'lon',
+      'nic',
+      'rc',
+      'nac_p',
+      'nac_v',
+      'sil',
+      'sil_type',
+    ],
+    mlat: [],
+  };
+  assert.deepEqual(normalizeGnssAircraft({ ac: [aircraft(tisbQuality)] }), []);
+  const unknownContainment = {
+    nic: 0,
+    nac_p: 10,
+    tisb: ['callsign'],
+    mlat: [],
+  };
+  assert.equal(
+    normalizeGnssAircraft({ ac: [aircraft(unknownContainment)] })[0].degraded,
+    false,
+  );
+});

src/layers/gnss/source.js

@@ -0,0 +1,76 @@
+import { readResponseJsonCapped } from '../../sources/httpBody.js';
+
+function retryDelay(raw, nowMs) {
+  if (!raw) return null;
+  const seconds = Number(raw);
+  const ms = seconds * 1000;
+  if (Number.isFinite(ms) && seconds > 0)
+    return Math.min(3600000, Math.max(5000, ms));
+  const at = Date.parse(raw);
+  return Number.isFinite(at) && at > nowMs
+    ? Math.min(3600000, Math.max(5000, at - nowMs))
+    : null;
+}
+
+/** Request integrity facts around a view anchor through the same-origin adsb.lol proxy. */
+export function createAdsbGnssSource({
+  fetchImpl = (...args) => globalThis.fetch(...args),
+  now = () => Date.now(),
+} = {}) {
+  return {
+    async getSnapshot({ latitude, longitude } = {}, { signal } = {}) {
+      signal?.throwIfAborted();
+      if (!Number.isFinite(latitude) || !Number.isFinite(longitude))
+        throw new Error('GNSS snapshot needs a view anchor');
+      const params = new URLSearchParams({
+        lat: String(Math.round(latitude)),
+        lon: String(Math.round(longitude)),
+      });
+      const response = await fetchImpl(`/api/gnss-integrity?${params}`, {
+        signal,
+      });
+      if (!response.ok) {
+        const limited = response.status === 429;
+        const retryAfterMs = retryDelay(
+          response.headers.get('retry-after'),
+          now(),
+        );
+        throw Object.assign(
+          new Error(
+            limited
+              ? 'GNSS feed rate limited (HTTP 429)'
+              : `GNSS feed unavailable (HTTP ${response.status})`,
+          ),
+          {
+            status: response.status,
+            retryable: limited || response.status >= 500,
+            retryAfterMs: retryAfterMs ?? (limited ? 60000 : null),
+          },
+        );
+      }
+      const payload = await readResponseJsonCapped(
+        response,
+        4 * 1024 * 1024,
+        signal,
+      );
+      signal?.throwIfAborted();
+      if (!Array.isArray(payload?.rows))
+        throw new Error('Malformed GNSS integrity snapshot');
+      // The snapshot's age (measured on the proxy's clock) dates every row in
+      // the rolling window; an undated snapshot could only be treated as new,
+      // so it is refused.
+      if (!Number.isFinite(payload.ageMs) || payload.ageMs < 0)
+        throw new Error('GNSS integrity snapshot has no observation time');
+      return {
+        rows: payload.rows,
+        ageMs: payload.ageMs,
+        fetchedAt: Number.isFinite(payload.fetchedAt)
+          ? payload.fetchedAt
+          : null,
+        stale: payload.stale === true,
+        classifier:
+          typeof payload.classifier === 'string' ? payload.classifier : null,
+      };
+    },
+  };
+}

src/layers/gnss/source.test.mjs

@@ -0,0 +1,111 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { createAdsbGnssSource } from './source.js';
+
+test('the source asks the same-origin proxy for the view anchor', async () => {
+  const calls = [];
+  const source = createAdsbGnssSource({
+    fetchImpl: async (url, options) => {
+      calls.push(url);
+      assert.ok(options.signal instanceof AbortSignal);
+      return Response.json({
+        fetchedAt: 5,
+        ageMs: 0,
+        classifier: 'gev-nic-nacp-v2',
+        rows: [{ hex: 'abc123' }],
+      });
+    },
+  });
+  const snapshot = await source.getSnapshot(
+    { latitude: 50.06143, longitude: 19.93658 },
+    { signal: new AbortController().signal },
+  );
+  assert.deepEqual(calls, ['/api/gnss-integrity?lat=50&lon=20']);
+  assert.deepEqual(snapshot, {
+    rows: [{ hex: 'abc123' }],
+    ageMs: 0,
+    fetchedAt: 5,
+    stale: false,
+    classifier: 'gev-nic-nacp-v2',
+  });
+});
+
+test('the source reports stale proxy data and rejects bad input or responses', async () => {
+  const reply = (body, init) => async () => Response.json(body, init);
+  const stale = await createAdsbGnssSource({
+    fetchImpl: reply({ rows: [], fetchedAt: 7, ageMs: 90_000, stale: true }),
+  }).getSnapshot({ latitude: 1, longitude: 2 });
+  assert.equal(stale.stale, true);
+  assert.equal(stale.ageMs, 90_000, 'a stale reply keeps its observation age');
+  assert.equal(stale.fetchedAt, 7);
+  assert.equal(stale.classifier, null);
+  // Without an observation age the rows could only be dated as new.
+  for (const ageMs of [undefined, null, '7', -1, Number.NaN])
+    await assert.rejects(
+      createAdsbGnssSource({
+        fetchImpl: reply({ rows: [], fetchedAt: 7, ageMs }),
+      }).getSnapshot({ latitude: 1, longitude: 2 }),
+      /no observation time/,
+    );
+
+  await assert.rejects(
+    createAdsbGnssSource({ fetchImpl: reply({}) }).getSnapshot({}),
+    /view anchor/,
+  );
+  await assert.rejects(
+    createAdsbGnssSource({
+      fetchImpl: reply({ error: 'x' }, { status: 502 }),
+    }).getSnapshot({ latitude: 1, longitude: 2 }),
+    /HTTP 502/,
+  );
+  await assert.rejects(
+    createAdsbGnssSource({ fetchImpl: reply({ rows: 'no' }) }).getSnapshot({
+      latitude: 1,
+      longitude: 2,
+    }),
+    /Malformed/,
+  );
+  const controller = new AbortController();
+  controller.abort();
+  await assert.rejects(
+    createAdsbGnssSource({ fetchImpl: reply({ rows: [] }) }).getSnapshot(
+      { latitude: 1, longitude: 2 },
+      { signal: controller.signal },
+    ),
+  );
+});
+
+test('HTTP failures distinguish rate limiting, preserve Retry-After and classify retryability', async () => {
+  const at = Date.UTC(2026, 9, 13, 12);
+  for (const [status, header, delay, retryable] of [
+    [429, '3600', 3600000, true],
+    [429, new Date(at + 3600000).toUTCString(), 3600000, true],
+    [429, null, 60000, true],
+    [429, 'Infinity', 60000, true],
+    [502, '5', 5000, true],
+    [502, null, null, true],
+    [400, null, null, false],
+  ]) {
+    const source = createAdsbGnssSource({
+      now: () => at,
+      fetchImpl: async () =>
+        Response.json(
+          {},
+          { status, headers: header ? { 'Retry-After': header } : {} },
+        ),
+    });
+    await assert.rejects(
+      source.getSnapshot({ latitude: 50, longitude: 20 }),
+      (e) => {
+        assert.equal(e.status, status);
+        assert.equal(e.retryAfterMs, delay);
+        assert.equal(e.retryable, retryable);
+        assert.match(
+          e.message,
+          status === 429 ? /rate limited/ : /feed unavailable/,
+        );
+        return true;
+      },
+    );
+  }
+});

src/layers/military/policy.js

@@ -6,6 +6,7 @@ export {
   ERROR_BACKOFF_INTERVAL,
 } from './recordPolicy.js';
 import * as Cesium from 'cesium';
+import { EMERGENCY_TINT_CSS } from '../../data/aircraftEmergency.js';
 
 /**
  * @module militaryFlights
@@ -40,6 +41,11 @@ export const MIL_ICON_COLOR = Cesium.Color.fromCssColorString('#FFB800');
 
 export const TRACKED_ICON_COLOR = Cesium.Color.fromCssColorString('#FFD166');
 
+/** @constant {Cesium.Color} Red tint for aircraft broadcasting an emergency (mirror of flights) */
+
+export const EMERGENCY_ICON_COLOR =
+  Cesium.Color.fromCssColorString(EMERGENCY_TINT_CSS);
+
 // --- Ground traffic (owner reversal 2026-07-03; mirror of flights.js) ---------------
 // adsb.lol/readsb flags ground traffic with alt_baro === "ground" (no separate
 // boolean). Such aircraft are RENDERED instead of floating at the 3 km altitude

src/layers/military/queries.js

@@ -9,6 +9,7 @@ import {
   CONTACT_MATCH_TIER,
 } from '../../data/contactMatch.js';
 import { LANDED_ALT_MAX_FT, LANDED_SPEED_MAX_MPS } from './policy.js';
+import { emergencyBroadcastPhrase } from '../../data/aircraftEmergency.js';
 
 export function createQueries({
   flightState,
@@ -133,6 +134,10 @@ export function createQueries({
         flightState.records.missingPolls.get(icao24) ||
         flightState.feed._backoff,
       ),
+      // This poll's transponder broadcast (not sticky; see records.js).
+      squawk: info?.squawk ?? null,
+      emergency: info?.emergency ? { ...info.emergency } : null,
+      emergencyBroadcast: emergencyBroadcastPhrase(info?.emergency),
     };
   }
 
@@ -156,7 +161,9 @@ export function createQueries({
    *   lon: number|null, altitudeM: number|null, speedMps: number|null,
    *   heading: number|null, verticalRateMps: number|null, onGround: boolean,
    *   military: boolean, aircraftClass: string|null, originCountry: null,
-   *   operator: string|null, routeOrigin: null, routeDestination: null}}
+   *   operator: string|null, squawk: string|null, emergency: boolean,
+   *   emergencyKind: string|null, emergencySource: 'squawk'|'ads-b'|null,
+   *   emergencyBroadcast: string|null, lastContactAtMs: number|null, routeOrigin: null, routeDestination: null}}
    */
 
   function mapAnalystRecord(icao24, info) {
@@ -187,6 +194,20 @@ export function createQueries({
       aircraftClass: tr3bAircraftClass(icao24, text(info?.klass)),
       originCountry: null,
       operator: text(info?.operator),
+      squawk: text(info?.squawk),
+      // True while this poll broadcast an emergency (7500/7600/7700 or the
+      // ADS-B status); priority statuses (lifeguard, minfuel) report the kind
+      // without the flag.
+      emergency: info?.emergency?.severity === 'emergency',
+      emergencyKind: text(info?.emergency?.kind),
+      // Provenance, so a summary can say "broadcasting squawk 7700" rather
+      // than "ADS-B reports general emergency" (or flatten both): 'squawk'
+      // when the Mode A code names the status, 'ads-b' for the readsb field.
+      emergencySource: text(info?.emergency?.source),
+      emergencyBroadcast: emergencyBroadcastPhrase(info?.emergency),
+      // Latest known general aircraft-message contact, retained if a poll
+      // has no time. This is not the receipt time of the current status.
+      lastContactAtMs: num(info?.lastContactEpochMs),
       routeOrigin: null,
       routeDestination: null,
     };

src/layers/military/records.js

@@ -1,6 +1,7 @@
 import { pickRenderAltitudeM } from '../../data/renderAltitude.js';
 import { stickyText, stickyNumber } from '../../data/aircraftMeta.js';
 import { classifyAircraft } from '../../data/aircraftClass.js';
+import { aircraftEmergency } from '../../data/aircraftEmergency.js';
 import {
   GROUND_FLOOR_WARM_MAX_ALT_M,
   LANDED_MISSING_POLL_LIMIT,
@@ -161,6 +162,9 @@ export class MilitaryFlightRecords {
         null,
       ),
       turnRateDps: prevMeta?.turnRateDps || 0,
+      // Per poll, NOT sticky (mirror of flights): a cleared code clears here.
+      squawk: aircraft.squawk ?? null,
+      emergency: aircraftEmergency(aircraft),
       onGround,
       // Round 7: sticky airborne history (see _likelyLanded).
       wasAirborne: prevMeta?.wasAirborne === true || !onGround,

src/layers/military/records.test.mjs

@@ -98,3 +98,19 @@ test('military records keep bounded partial retention and release metadata only
     'remove',
   );
 });
+
+test('military emergency status follows the latest poll instead of sticking', () => {
+  const records = store();
+  const first = records.receive(
+    observation({ squawk: '1234', emergency: 'minfuel' }),
+    context(),
+  );
+  assert.equal(first.meta.squawk, '1234');
+  assert.equal(first.meta.emergency.kind, 'minfuel');
+  assert.equal(first.meta.emergency.severity, 'priority');
+  const next = records.receive(
+    observation({ squawk: '1234', emergency: 'none' }),
+    context(),
+  );
+  assert.equal(next.meta.emergency, null);
+});

src/layers/military/rendering.js

@@ -18,6 +18,7 @@ import {
   screenProjectedRotation,
 } from '../../data/iconOrientation.js';
 import { limitCourseStep, courseSlewCapDps } from '../../data/motionModel.js';
+import { isEmergency } from '../../data/aircraftEmergency.js';
 import {
   PLANE_MODEL_SCALE,
   PLANE_MODEL_URL,
@@ -33,6 +34,7 @@ import {
   COCKPIT_CONTACT_SIZE_PX,
   MIL_ICON_COLOR,
   TRACKED_ICON_COLOR,
+  EMERGENCY_ICON_COLOR,
   MODEL_ALT_CEIL_M,
   MODEL_MAX_ALL,
   MODEL_MAX,
@@ -159,7 +161,7 @@ export function createRendering({
       bb.height = COCKPIT_CONTACT_SIZE_PX;
       bb.scale = limbScale;
       bb.scaleByDistance = _cockpitBillboardScaleByDistance();
-      bb.color = MIL_ICON_COLOR.withAlpha(freshnessAlpha);
+      bb.color = _fleetBillboardColor(icao24).withAlpha(freshnessAlpha);
       bb.rotation = 0;
       return;
     }
@@ -173,7 +175,9 @@ export function createRendering({
     bb.height = icao24 === flightState._trackedIcao ? 24 : 20;
     bb.scale = _militaryBillboardScale(icao24) * limbScale;
     bb.scaleByDistance = _normalBillboardScaleByDistance();
-    bb.color = MIL_ICON_COLOR.withAlpha(cyberSonarBaseAlpha(bb));
+    bb.color = _fleetBillboardColor(icao24, meta).withAlpha(
+      cyberSonarBaseAlpha(bb),
+    );
   }
 
   /** Sprite kind for one contact's billboard. Identity for every aircraft except
@@ -189,7 +193,17 @@ export function createRendering({
 
   function _modelColor(icao24) {
     if (icao24 === flightState._trackedIcao) return TRACKED_ICON_COLOR;
-    return MIL_ICON_COLOR;
+    return _fleetBillboardColor(icao24);
+  }
+
+  /** Fleet (untracked) tint: red while the latest poll broadcast an emergency,
+   *  amber otherwise. Cockpit far-contact dots use it too. */
+
+  function _fleetBillboardColor(
+    icao24,
+    info = flightState.records.data.get(icao24),
+  ) {
+    return isEmergency(info?.emergency) ? EMERGENCY_ICON_COLOR : MIL_ICON_COLOR;
   }
 
   /** The FLEET's 3D-model regime: models3d enabled AND the camera zoomed in past the altitude
@@ -965,7 +979,7 @@ export function createRendering({
       const isCockpitNear =
         flightState._cockpitContactMode &&
         flightState._cockpitNearContacts.has(icao24);
-      const baseColor = MIL_ICON_COLOR;
+      const baseColor = _fleetBillboardColor(icao24, info);
       const treatment = applyAircraftBillboardTreatment({
         billboard: bb,
         baseScale:
@@ -1082,6 +1096,7 @@ export function createRendering({
     _applyFleetBillboardPresentation,
     _iconKind,
     _modelColor,
+    _fleetBillboardColor,
     _modelRegimeActive,
     _modelCap,
     _modelAddDistM,

src/layers/military/snapshotRenderer.js

@@ -1,4 +1,5 @@
 import * as Cesium from 'cesium';
+import { cyberSonarBaseAlpha } from '../../cyberSonar.js';
 import { CLASS_SCALE_2D } from '../../data/aircraftClass.js';
 import {
   turnRateFromFixHistory,
@@ -7,12 +8,7 @@ import {
 } from '../../data/motionModel.js';
 import { aircraftIcon } from '../../data/aircraftIcons.js';
 import { POSITION_HISTORY_LIMIT } from './recordPolicy.js';
-import {
-  BILLBOARD_SCALE,
-  GROUND_SCALE,
-  TRACKED_ICON_COLOR,
-  MIL_ICON_COLOR,
-} from './policy.js';
+import { BILLBOARD_SCALE, GROUND_SCALE, TRACKED_ICON_COLOR } from './policy.js';
 
 /** Apply military record changes to Cesium resources and existing follow operations. */
 export function createMilitarySnapshotRenderer({
@@ -125,6 +121,11 @@ export function createMilitarySnapshotRenderer({
 
       if (flightState._billboards.has(icao24)) {
         const bb = flightState._billboards.get(icao24);
+        if (!isTracked) {
+          bb.color = rendering
+            ._fleetBillboardColor(icao24, meta)
+            .withAlpha(cyberSonarBaseAlpha(bb));
+        }
         // Position AND rotation are owned by the fleet pass (_fleetTick);
         // course changes land on the next rotation pass (forced below).
         // Ground flips (landing/takeoff) restyle this SAME billboard in
@@ -161,7 +162,9 @@ export function createMilitarySnapshotRenderer({
           // Screen-projected rotation lands on the next fleet tick.
           rotation: 0,
           alignedAxis: Cesium.Cartesian3.ZERO,
-          color: isTracked ? TRACKED_ICON_COLOR : MIL_ICON_COLOR,
+          color: isTracked
+            ? TRACKED_ICON_COLOR
+            : rendering._fleetBillboardColor(icao24, meta),
           sizeInMeters: false,
           scaleByDistance: rendering._normalBillboardScaleByDistance(),
           // Grounded/near-surface planes sit at/below the photoreal tile

src/layers/military/tracking.js

@@ -21,7 +21,6 @@ import {
   TRAIL_COLOR,
   BILLBOARD_SCALE,
   GROUND_SCALE,
-  MIL_ICON_COLOR,
   AMBER_TRANSPARENT,
   TRACKED_ICON_COLOR,
 } from './policy.js';
@@ -780,12 +779,16 @@ export function createTracking({
       bb.width = 20;
       bb.height = 20;
       // Ground-aware restore (a plane untracked while taxiing comes back at
-      // ground scale; tint is full amber on the ground and in the air).
+      // ground scale; the fleet tint is amber, or red while broadcasting an
+      // emergency, on the ground and in the air).
       bb.scale =
         BILLBOARD_SCALE *
         (CLASS_SCALE_2D[meta?.klass] || 1) *
         (meta?.onGround ? GROUND_SCALE : 1);
-      bb.color = MIL_ICON_COLOR;
+      bb.color = parts.rendering._fleetBillboardColor(
+        flightState._trackedIcao,
+        meta,
+      );
       bb.rotation = flightState._lastTrackedRotation;
     }
     flightState._lastCamPoseSig = ''; // force a fleet rotation pass on the next tick

src/layers/recentImagery/catalog.js

@@ -27,7 +27,8 @@ const CMR_SEARCH_AFTER = 'CMR-Search-After';
 /**
  * Read one product's granules across CMR pages, sending back each response's
  * `CMR-Search-After` cursor until a short page, a missing cursor or the
- * record cap ends the walk. `truncated` is measured against CMR's `hits`.
+ * record cap ends the walk. `truncated` means CMR's `hits` exceed the rows
+ * read, or the cap dropped valid granules from the last page read.
  * @param {{ product: string, url: string, fetchImpl: typeof fetch, signal?: AbortSignal, maxRecords?: number }} request
  * @returns {Promise<{ granules: Array<object>, truncated: boolean }>}
  */
@@ -40,6 +41,8 @@ export async function fetchCmrPages({
 }) {
   const granules = [];
   let hits = 0;
+  let readCount = 0;
+  let capped = 0;
   let cursor = null;
   for (;;) {
     const init = { signal };
@@ -47,19 +50,27 @@ export async function fetchCmrPages({
     const response = await fetchImpl(url, init);
     if (!response?.ok)
       throw new Error(`HTTP ${response?.status ?? 'error'} from CMR`);
-    const page = parseCmrUmm(await response.json(), product);
-    granules.push(...page.granules);
+    const json = await response.json();
+    const rawCount = Array.isArray(json?.items) ? json.items.length : 0;
+    const page = parseCmrUmm(json, product);
+    readCount += rawCount;
+    const admitted = page.granules.slice(
+      0,
+      Math.max(0, maxRecords - granules.length),
+    );
+    granules.push(...admitted);
+    capped += page.granules.length - admitted.length;
     hits = Math.max(hits, page.hits);
     cursor = response.headers?.get?.(CMR_SEARCH_AFTER) ?? null;
     if (
       !cursor ||
-      page.granules.length < CMR_PAGE_SIZE ||
-      granules.length >= maxRecords ||
-      granules.length >= hits
+      rawCount < CMR_PAGE_SIZE ||
+      readCount >= maxRecords ||
+      readCount >= hits
     )
       break;
   }
-  return { granules, truncated: hits > granules.length };
+  return { granules, truncated: hits > readCount || capped > 0 };
 }
 
 function finiteOrNull(value) {

src/layers/recentImagery/cmr-raw-page-budget.test.mjs

@@ -0,0 +1,98 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { fetchCmrPages } from './catalog.js';
+const item = (id) => ({
+  meta: { 'concept-id': id },
+  umm: {
+    TemporalExtent: {
+      RangeDateTime: { BeginningDateTime: '2026-09-18T12:00:00Z' },
+    },
+  },
+});
+test('discarded rows do not turn a full CMR page into a final page', async () => {
+  let calls = 0;
+  const result = await fetchCmrPages({
+    product: 'S30',
+    url: 'fixture',
+    fetchImpl: async () => {
+      calls++;
+      const items =
+        calls === 1
+          ? Array.from({ length: 200 }, (_, i) =>
+              i === 0 ? {} : item(String(i)),
+            )
+          : [item('last')];
+      return Response.json(
+        { hits: 201, items },
+        { headers: { 'CMR-Search-After': `cursor-${calls}` } },
+      );
+    },
+  });
+  assert.equal(calls, 2);
+  assert.equal(result.granules.length, 200);
+  assert.equal(result.granules.at(-1).id, 'last');
+  assert.equal(result.truncated, false);
+});
+test('a non-page-multiple limit never returns more admitted records than its budget', async () => {
+  let calls = 0;
+  const result = await fetchCmrPages({
+    product: 'S30',
+    url: 'fixture',
+    maxRecords: 250,
+    fetchImpl: async () => {
+      calls++;
+      return Response.json(
+        {
+          hits: 1000,
+          items: Array.from({ length: 200 }, (_, i) => item(`${calls}:${i}`)),
+        },
+        { headers: { 'CMR-Search-After': `cursor-${calls}` } },
+      );
+    },
+  });
+  assert.equal(calls, 2);
+  assert.equal(result.granules.length, 250);
+  assert.equal(result.truncated, true);
+});
+test('valid records dropped by the cap mark the result truncated even when every hit was read', async () => {
+  let calls = 0;
+  const result = await fetchCmrPages({
+    product: 'S30',
+    url: 'fixture',
+    maxRecords: 250,
+    fetchImpl: async () => {
+      calls++;
+      return Response.json(
+        {
+          hits: 400,
+          items: Array.from({ length: 200 }, (_, i) => item(`${calls}:${i}`)),
+        },
+        { headers: { 'CMR-Search-After': `cursor-${calls}` } },
+      );
+    },
+  });
+  assert.equal(calls, 2);
+  assert.equal(result.granules.length, 250);
+  assert.equal(result.truncated, true);
+});
+test('malformed rows discarded under the cap leave a fully examined result untruncated', async () => {
+  let calls = 0;
+  const result = await fetchCmrPages({
+    product: 'S30',
+    url: 'fixture',
+    maxRecords: 250,
+    fetchImpl: async () => {
+      calls++;
+      const items = Array.from({ length: 200 }, (_, i) =>
+        calls === 2 && i >= 50 ? {} : item(`${calls}:${i}`),
+      );
+      return Response.json(
+        { hits: 400, items },
+        { headers: { 'CMR-Search-After': `cursor-${calls}` } },
+      );
+    },
+  });
+  assert.equal(calls, 2);
+  assert.equal(result.granules.length, 250);
+  assert.equal(result.truncated, false);
+});

src/layers/recentImagery/imagery-box-missing-edge.test.mjs

@@ -0,0 +1,48 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  boxCentre,
+  boxFromRectangle,
+  dequantizeBox,
+  validateBox,
+} from './model.js';
+import { searchHls } from './catalog.js';
+
+test('missing imagery edges do not turn into invented zero coordinates', () => {
+  for (const value of [null, undefined, '', ' ', false, true]) {
+    const box = { west: value, south: 0, east: 1, north: 1 };
+    assert.equal(validateBox(box).ok, false);
+    assert.equal(validateBox(box).reason, 'invalid');
+    assert.equal(boxCentre(box), null);
+  }
+  assert.equal(validateBox({ west: 0, south: 0, east: 1, north: 1 }).ok, true);
+  assert.equal(
+    validateBox({ west: '0', south: '0', east: '1', north: '1' }).ok,
+    true,
+  );
+});
+
+test('every edge and every box entry point refuses a missing edge', async () => {
+  const blanks = [null, undefined, '', ' ', false, [], {}];
+  for (const edge of ['west', 'south', 'east', 'north']) {
+    for (const value of blanks) {
+      const box = { west: 1, south: 1, east: 2, north: 2, [edge]: value };
+      assert.equal(validateBox(box).ok, false, `${edge}=${String(value)}`);
+      // Share-link integers and Cesium radians are converted per edge.
+      assert.equal(dequantizeBox(box), null, `share ${edge}`);
+      assert.equal(boxFromRectangle(box), null, `radians ${edge}`);
+    }
+  }
+  let fetched = false;
+  await assert.rejects(
+    searchHls({
+      box: { west: ' ', south: 1, east: 2, north: 2 },
+      fetchImpl: async () => {
+        fetched = true;
+      },
+    }),
+    TypeError,
+  );
+  assert.equal(fetched, false);
+  assert.ok(dequantizeBox({ west: 0, south: 0, east: 100000, north: 100000 }));
+});

src/layers/recentImagery/model.js

@@ -75,6 +75,14 @@ const pad2 = (value) => String(value).padStart(2, '0');
  * east are not swapped: west > east crosses the dateline and `validateBox`
  * rejects it. Null when any edge is nonfinite.
  */
+/** A box edge as a number, or null when it is missing, blank or not numeric. */
+function edgeNumber(value) {
+  if (typeof value === 'number') return Number.isFinite(value) ? value : null;
+  if (typeof value !== 'string' || !value.trim()) return null;
+  const number = Number(value);
+  return Number.isFinite(number) ? number : null;
+}
+
 function normalizeBox(box) {
   if (!box || typeof box !== 'object') return null;
   const [west, south, east, north] = [
@@ -82,8 +90,8 @@ function normalizeBox(box) {
     box.south,
     box.east,
     box.north,
-  ].map(Number);
-  if (![west, south, east, north].every(Number.isFinite)) return null;
+  ].map(edgeNumber);
+  if ([west, south, east, north].some((edge) => edge == null)) return null;
   return {
     west,
     south: Math.min(south, north),
@@ -211,11 +219,16 @@ export function boxFromPin(lon, lat, sideKm = PIN_BOX_SIDE_KM) {
 
 function mapBox(box, fn) {
   if (!box || typeof box !== 'object') return null;
+  // Converting first would turn a blank edge into 0 before normalizeBox sees it.
+  const edge = (value) => {
+    const number = edgeNumber(value);
+    return number == null ? null : fn(number);
+  };
   return normalizeBox({
-    west: fn(box.west),
-    south: fn(box.south),
-    east: fn(box.east),
-    north: fn(box.north),
+    west: edge(box.west),
+    south: edge(box.south),
+    east: edge(box.east),
+    north: edge(box.north),
   });
 }
 

src/layers/recentImagery/source.js

@@ -1,7 +1,11 @@
 import { searchHls } from './catalog.js';
 import { gibsTemplate, wvsSnapshotUrl } from './model.js';
 
-/** NASA-compatible imagery acquisition; transport and URL builders are replaceable. */
+/**
+ * NASA-compatible imagery acquisition; transport and URL builders are replaceable.
+ * Thumbnail responses must expose Data-Present: true for image admission, or
+ * false for confirmed empty coverage, including injected getThumbnail sources.
+ */
 export function createRecentImagerySource({
   fetchImpl = (...args) => globalThis.fetch(...args),
   search = searchHls,

src/layers/recentImagery/thumbnail-presence-proof.test.mjs

@@ -0,0 +1,30 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createThumbnailLoader } from './thumbnails.js';
+test('missing or malformed presence evidence cannot prove thumbnail pixels', async () => {
+  for (const header of [null, 'unknown', '', 'true', 'false']) {
+    let decodes = 0;
+    const loader = createThumbnailLoader({
+      requestThumbnail: async () => ({
+        ok: true,
+        headers: { get: (key) => (key === 'Data-Present' ? header : null) },
+        blob: async () => {
+          decodes++;
+          return new Blob(['fixture']);
+        },
+      }),
+      createObjectUrl: () => 'blob:fixture',
+    });
+    loader.request(
+      { key: 'fixture', product: 'S30', day: '2026-09-18' },
+      { west: 0, east: 1, south: 0, north: 1 },
+    );
+    await new Promise((resolve) => setImmediate(resolve));
+    assert.equal(
+      loader.get('fixture').status,
+      header === 'true' ? 'present' : header === 'false' ? 'empty' : 'error',
+    );
+    assert.equal(decodes, header === 'true' ? 1 : 0);
+    loader.destroy();
+  }
+});

src/layers/recentImagery/thumbnails.js

@@ -100,12 +100,12 @@ export function createThumbnailLoader({
         cancelled = true;
       } else if (response?.ok) {
         const present = String(
-          response.headers?.get?.('Data-Present') ?? 'true',
+          response.headers?.get?.('Data-Present') ?? '',
         ).toLowerCase();
         acquisitionTime = response.headers?.get?.('Acquisition-Time') || null;
         if (present === 'false') {
           status = 'empty';
-        } else {
+        } else if (present === 'true') {
           const blob = await response.blob();
           if (controller.signal.aborted) cancelled = true;
           else {

src/layers/streetLevel/glyphs.js

@@ -65,6 +65,15 @@ export function imageConeGlyph({
   });
 }
 
+/** Street View-style marker: a field-of-view cone from a white-ringed dot. */
+export function viewConeMarkerGlyph({ size = 56, color = '#4285f4' } = {}) {
+  return cachedGlyph(`view-cone:${size}:${color}`, size, (ctx, c) => {
+    wedge(ctx, c, size * 0.48, 0.62, color, 0.38);
+    wedge(ctx, c, size * 0.3, 0.62, color, 0.3);
+    dot(ctx, c, size * 0.13, color, '#ffffff', Math.max(2, size * 0.05));
+  });
+}
+
 /** Marker for the image the viewer currently shows. */
 export function positionMarkerGlyph({ size = 44, color = '#ffb300' } = {}) {
   return cachedGlyph(`pos:${size}:${color}`, size, (ctx, c) => {

src/layers/streetLevel/groundClick.js

@@ -0,0 +1,56 @@
+import * as Cesium from 'cesium';
+import { GROUND_CLICK_MAX_HEIGHT_M } from './policy.js';
+import { cameraHeightAboveGround } from './view.js';
+
+/** Whether the camera is low enough for a click on the ground to mean a street. */
+export function groundClickHeightOk(viewer, groundAt) {
+  if (!viewer?.camera?.positionCartographic) return false;
+  return (
+    cameraHeightAboveGround(viewer, { groundAt }) <= GROUND_CLICK_MAX_HEIGHT_M
+  );
+}
+
+/**
+ * A click on the map itself at street zoom opens the nearest image of the
+ * active `groundClick` providers, without moving the camera. The height is
+ * measured at the click, not read from the cached flag.
+ * @param {{state: object, openNearest: Function, isAvailable: (entry: object) => boolean, groundAt?: Function}} options
+ * @returns {(screenPosition: {x: number, y: number}, picked?: object) => Promise<boolean>|false}
+ */
+export function createGroundClick({
+  state,
+  openNearest,
+  isAvailable,
+  groundAt = null,
+}) {
+  return function openAtGround(screenPosition, picked) {
+    const scenePick = state.services.scenePick;
+    if (!state.enabled || !state.viewer || !scenePick?.pickGroundPosition)
+      return false;
+    if (
+      !scenePick.isSurfacePick(picked) ||
+      !groundClickHeightOk(state.viewer, groundAt)
+    )
+      return false;
+    const providerIds = [...state.providers.values()]
+      .filter(
+        (entry) =>
+          entry.on &&
+          entry.def.groundClick &&
+          entry.status?.configured &&
+          isAvailable(entry),
+      )
+      .map((entry) => entry.def.id);
+    if (!providerIds.length) return false;
+    const position = scenePick.pickGroundPosition(state.viewer, screenPosition);
+    const carto = position && Cesium.Cartographic.fromCartesian(position);
+    if (!carto) return false;
+    return openNearest(
+      {
+        lon: Cesium.Math.toDegrees(carto.longitude),
+        lat: Cesium.Math.toDegrees(carto.latitude),
+      },
+      { providerIds, frame: false },
+    );
+  };
+}

src/layers/streetLevel/groundClick.test.mjs

@@ -0,0 +1,133 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import * as Cesium from 'cesium';
+import { createGroundClick, groundClickHeightOk } from './groundClick.js';
+import * as scenePick from '../../data/scenePick.js';
+
+const GROUND = Cesium.Cartesian3.fromDegrees(-121.4944, 38.5816, 10);
+const TILESET = { isCesium3DTileset: true };
+
+/**
+ * A layer state with providers `{id, on, groundClick, configured, available}`;
+ * `picked` is where the depth buffer lands, `ellipsoid` the fallback hit.
+ */
+function harness({
+  providers = [
+    { id: 'mapillary', groundClick: false },
+    { id: 'google', groundClick: true },
+  ],
+  height = 400,
+  enabled = true,
+  picked = GROUND,
+  ellipsoid = undefined,
+} = {}) {
+  const opened = [];
+  const state = {
+    enabled,
+    services: { scenePick },
+    providers: new Map(
+      providers.map(
+        ({
+          id,
+          on = true,
+          groundClick,
+          configured = true,
+          available = true,
+        }) => [
+          id,
+          { on, def: { id, groundClick }, status: { configured }, available },
+        ],
+      ),
+    ),
+    viewer: {
+      scene: { pickPositionSupported: true, pickPosition: () => picked },
+      camera: {
+        pickEllipsoid: () => ellipsoid,
+        positionCartographic: Cesium.Cartographic.fromDegrees(
+          -121.4944,
+          38.5816,
+          height,
+        ),
+      },
+    },
+  };
+  const openAtGround = createGroundClick({
+    state,
+    openNearest: (point, options) => {
+      opened.push({ point, options });
+      return Promise.resolve(true);
+    },
+    isAvailable: (entry) => entry.available,
+  });
+  return { opened, openAtGround };
+}
+
+const near = (point) =>
+  Math.abs(point.lon - -121.4944) < 1e-9 &&
+  Math.abs(point.lat - 38.5816) < 1e-9;
+
+test('a click on the map opens the click-to-open providers there, without moving the camera', () => {
+  for (const picked of [undefined, { primitive: TILESET }, { content: {} }]) {
+    const { opened, openAtGround } = harness();
+    openAtGround({ x: 10, y: 20 }, picked);
+    assert.equal(opened.length, 1, JSON.stringify(picked));
+    assert.ok(near(opened[0].point));
+    assert.deepEqual(opened[0].options, {
+      providerIds: ['google'],
+      frame: false,
+    });
+  }
+});
+
+test('where the depth buffer names no place, the ellipsoid answers', () => {
+  const { opened, openAtGround } = harness({
+    picked: new Cesium.Cartesian3(500, 0, 0),
+    ellipsoid: GROUND,
+  });
+  openAtGround({ x: 1, y: 1 });
+  assert.ok(near(opened[0].point));
+});
+
+test('nothing opens over another layer’s object, the sky, from high up, off its map stack, or with the provider off', () => {
+  const cases = [
+    { picked: { id: { id: 'flight:1' } }, label: 'an entity' },
+    { picked: { id: 'cctv:7', primitive: TILESET }, label: 'an id on a tile' },
+    { options: { picked: null, ellipsoid: undefined }, label: 'the sky' },
+    { options: { height: 5000 }, label: 'high up' },
+    {
+      options: {
+        providers: [{ id: 'google', groundClick: true, available: false }],
+      },
+      label: 'not Google 3D',
+    },
+    {
+      options: { providers: [{ id: 'google', groundClick: true, on: false }] },
+      label: 'off',
+    },
+    {
+      options: {
+        providers: [{ id: 'google', groundClick: true, configured: false }],
+      },
+      label: 'no key',
+    },
+    { options: { enabled: false }, label: 'layer off' },
+  ];
+  for (const { picked, options = {}, label } of cases) {
+    const { opened, openAtGround } = harness(options);
+    assert.equal(openAtGround({ x: 1, y: 1 }, picked), false, label);
+    assert.equal(opened.length, 0, label);
+  }
+});
+
+test('street zoom is measured above the ground under the camera', () => {
+  const viewer = (height) => ({
+    camera: {
+      positionCartographic: Cesium.Cartographic.fromDegrees(0, 0, height),
+    },
+    scene: { globe: { getHeight: () => 1500 } },
+  });
+  // 1,500 m up a plateau, 2,000 m above it: still a street.
+  assert.equal(groundClickHeightOk(viewer(3500)), true);
+  assert.equal(groundClickHeightOk(viewer(5000)), false);
+  assert.equal(groundClickHeightOk(null), false);
+});