Merge remote-tracking branch 'origin/main' into fix/1273

# Conflicts:
#	docs/CURRENT-STATE.md
#	src/tooling/liveProviders.test.mjs

src/layers/alpr/index.js

@@ -3,16 +3,12 @@ import * as Cesium from 'cesium';
 import {
   LAYER_ID,
   REQUEST_DEBOUNCE_MS,
-  QUERY_LIMIT,
-  MAX_RENDERED,
-  QUERY_SNAP_DEGREES,
   QUERY_REUSE_MS,
   ALPR_COLOR,
 } from './policy.js';
 import {
   snapAlprBox,
   boxContains,
-  destinationPointDeg,
   alprRetryDelayMs,
   validateAlprSnapshot,
   alprCreditMarkup,
@@ -84,9 +80,7 @@ export function createAlprCamerasLayer({ source, services } = {}) {
     viewportBox,
     clearRendered,
     hideOnMapCredit,
-    presentOnMapCredit,
     renderRecords,
-    selectRecord,
     focusNearest,
     clearSelection,
     updateSelectedAnchor,

src/layers/alpr/records.js

@@ -1,11 +1,11 @@
 import { QUERY_LIMIT, QUERY_SNAP_DEGREES } from './policy.js';
 
-export function textTag(value) {
+function textTag(value) {
   const t = String(value ?? '').trim();
   return t || null;
 }
 
-export function numTag(value) {
+function numTag(value) {
   // `Number('')` and `Number('   ')` are 0, not NaN — a blank or whitespace-only
   // tag value must read as missing, never as a due-north bearing.
   if (value == null) return null;
@@ -102,7 +102,7 @@ export function normalizeAlprNode(el) {
   };
 }
 
-export function normalizeDirection(value) {
+function normalizeDirection(value) {
   const degrees = numTag(value);
   return degrees != null && degrees >= 0 && degrees <= 360
     ? degrees % 360

src/layers/alpr/tileRecords.js

@@ -3,7 +3,7 @@ import { VectorTile } from '@mapbox/vector-tile';
 import { normalizeAlprNode } from './records.js';
 
 /** Map extract attributes without treating an OSM edit date as a field verification. */
-export function normalizeAlprTileFeature(feature) {
+function normalizeAlprTileFeature(feature) {
   const p = feature?.properties || {};
   if (feature?.geometry?.type !== 'Point' || p.osmType !== 'node') return null;
   const [lon, lat] = feature.geometry.coordinates;

src/layers/awareness/policy.js

@@ -1,9 +1,6 @@
 export const AIRCRAFT_DEPENDENCIES = ['flights', 'military'];
 
-export const DEFERRED_DEPENDENCIES = [
-  'ais-live-vessels',
-  'military-installations',
-];
+const DEFERRED_DEPENDENCIES = ['ais-live-vessels', 'military-installations'];
 
 export const DEPENDENCIES = [
   ...AIRCRAFT_DEPENDENCIES,

src/layers/bikeshare/failureReporting.test.mjs

@@ -60,7 +60,7 @@ test('the layer reports failure when a failed city left it with nothing', () =>
 });
 
 test('a layer with nothing to draw and nothing failed is not an error', () => {
-  const { state, methods } = makeLayer();
+  const { methods } = makeLayer();
 
   // Out of range of every city is empty, not broken.
   assert.equal(methods.getStats().error, undefined);

src/layers/bikeshare/policy.js

@@ -11,7 +11,7 @@ export const BIKESHARE_SELECTED_OVERLAY_SOURCE_OPTIONS = Object.freeze({
 // --- Activation / display thresholds ---
 /** Altitude (m) at which bikeshare layer becomes eligible for display. */
 
-export const ACTIVATION_ALTITUDE_M = 50000;
+const ACTIVATION_ALTITUDE_M = 50000;
 
 /** Hysteresis enter threshold — layer activates when camera drops below this. */
 

src/layers/cctv/catalog.js

@@ -1,4 +1,4 @@
-import { CAMERA_SEEDS, SOURCE_ENDPOINT } from './policy.js';
+import { CAMERA_SEEDS } from './policy.js';
 import {
   lookupModelSpec,
   horizontalFovRangeDeg,

src/layers/cctv/frames.js

@@ -5,9 +5,6 @@ import {
   PROJECTION_CANVAS_HEIGHT,
   PROJECTION_MATTE_COLOR,
   PROJECTION_TEXTURE_SWAP_MS,
-  ACTIVE_FRAME_REFRESH_MS,
-  FRAME_ENDPOINT,
-  MEDIA_ENDPOINT,
   PROJECTION_ACTIVE_REFRESH_MS,
   PROJECTION_IDLE_REFRESH_MS,
   PLACEHOLDER_REPAINT_MS,

src/layers/cctv/geometry.js

@@ -1,7 +1,6 @@
 import * as Cesium from 'cesium';
 import { createFrustumVolumePrimitive } from '../../data/cctvViewshed.js';
 import {
-  PROJECTION_VERT_ASPECT,
   FRUSTUM_GROUND_CLEARANCE_M,
   PROBE_MIN_RANGE_M,
   PROBE_CLEARANCE_M,

src/layers/cctv/health.js

@@ -1,4 +1,4 @@
-import { HEALTH_SYNC_INTERVAL_MS, HEALTH_ENDPOINT } from './policy.js';
+import { HEALTH_SYNC_INTERVAL_MS } from './policy.js';
 
 export function createHealth({ state: layerState, services, parts, source }) {
   /**

src/layers/cctv/policy.js

@@ -1,10 +1,4 @@
-export {
-  FRAME_ENDPOINT,
-  SOURCE_ENDPOINT,
-  HEALTH_ENDPOINT,
-  MEDIA_ENDPOINT,
-  ACTIVE_FRAME_REFRESH_MS,
-} from './sourcePolicy.js';
+export { ACTIVE_FRAME_REFRESH_MS } from './sourcePolicy.js';
 import * as Cesium from 'cesium';
 import { CCTV_CARD_FETCH_BURST_SPACING_MS } from '../../data/cctvCards.js';
 import { CCTV_AMBIENT_CARD_MAX } from '../../data/cctvLod.js';
@@ -90,9 +84,6 @@ export const CCTV_CALIBRATION_STORAGE_KEY_V2 =
 
 export const PROJECTION_TEXTURE_SWAP_MS = 1000;
 
-export const PROJECTION_VERT_ASPECT =
-  PROJECTION_CANVAS_WIDTH / PROJECTION_CANVAS_HEIGHT;
-
 // V2 frustum geometry (design §2a/§6): the far-cap center + corners never sink
 // below groundAlt + this clearance, so a fabricated pitch (-24°) cannot bury
 // the monitor plane in the 3D tiles. Exported for the unit suite.

src/layers/cctv/sourcePolicy.js

@@ -1,9 +1,5 @@
 export const FRAME_ENDPOINT = '/api/cctv/frame';
 
-export const SOURCE_ENDPOINT = '/api/cctv/sources';
-
-export const HEALTH_ENDPOINT = '/api/cctv/health';
-
 export const MEDIA_ENDPOINT = '/api/cctv/media';
 
 export const ACTIVE_FRAME_REFRESH_MS = 10000;

src/layers/cyclones/labels.js

@@ -64,7 +64,7 @@ const SHARED_CARD = Object.freeze({
  * @param {boolean} selected
  * @returns {object}
  */
-export function cycloneStormEntry(storm, selected) {
+function cycloneStormEntry(storm, selected) {
   return {
     ...SHARED_CARD,
     ...markerClearance(
@@ -92,7 +92,7 @@ export function cycloneStormEntry(storm, selected) {
  * @param {{tauHours:number,position:object}} point
  * @returns {object}
  */
-export function cycloneLeadEntry(stormId, point) {
+function cycloneLeadEntry(stormId, point) {
   return {
     ...SHARED_CARD,
     ...markerClearance(CYCLONE_MARKER_PX.forecast),

src/layers/firms/model.js

@@ -591,6 +591,7 @@ export function createModel({
     formatLatLon,
     formatFrp,
     formatAge,
+    formatAgeLabel,
     formatAgoMinutes,
     confidenceBucket,
   };

src/layers/firms/queries.js

@@ -64,7 +64,8 @@ export function createQueries({
       const staleText = layerState._lastUpdate
         ? t('STALE · cached {age}', {
             age:
-              components.model.formatAge(now - layerState._lastUpdate) || '<1h',
+              components.model.formatAgeLabel(now - layerState._lastUpdate) ||
+              t('<1h', { context: 'age' }),
           })
         : t('STALE');
       let loadingLabel = '';

src/layers/flights/policy.js

@@ -1,11 +1,3 @@
-export {
-  GROUND_FLOOR_CLAMP_RADIUS_KM,
-  GROUND_FLOOR_WARM_MAX_ALT_M,
-  POSITION_HISTORY_LIMIT,
-  LANDED_MISSING_POLL_LIMIT,
-  MISSING_POLL_LIMIT,
-  ERROR_BACKOFF_INTERVAL,
-} from './recordPolicy.js';
 import * as Cesium from 'cesium';
 import { EMERGENCY_TINT_CSS } from '../../data/aircraftEmergency.js';
 

src/layers/flights/queries.js

@@ -580,7 +580,6 @@ export function createQueries({
       const maxRange =
         Number.isFinite(range) && range > 0 ? range : Number.POSITIVE_INFINITY;
 
-      const now = Cesium.JulianDate.now();
       const nearby = [];
 
       for (const [icao24, bb] of flightState._billboards) {

src/layers/installations/policy.js

@@ -2,8 +2,6 @@ export const LAYER_ID = 'military-installations';
 
 export const REQUEST_DEBOUNCE_MS = 180;
 
-export const MAX_VIEWPORT_DEGREES = 10;
-
 export const MAX_RENDERED = 700;
 
 export const GOOGLE_MILITARY_PLACE_TYPES = new Set(['military_base']);

src/layers/launches/rendering.js

@@ -109,7 +109,7 @@ export function createRendering({
       );
     });
     if (satelliteTrack) layerState._orbitMatches++;
-    const entity = layerState._dataSource.entities.add({
+    layerState._dataSource.entities.add({
       id: `rocket-launch:${launch.id}`,
       position,
       point: {

src/layers/localAdsb/feeds.js

@@ -5,12 +5,12 @@ import {
 
 /** Same-origin route served by `server/providers/local-receivers.js`. */
 export const LOCAL_RECEIVERS_URL = '/api/local-receivers/aircraft';
-export const LOCAL_RECEIVER_POLL_MS = 1_000;
+const LOCAL_RECEIVER_POLL_MS = 1_000;
 /**
  * Browser-side deadline for one route request, body included. The server
  * bounds each upstream read at 2 s; this bounds the browser-to-server leg.
  */
-export const LOCAL_RECEIVER_REQUEST_TIMEOUT_MS = 5_000;
+const LOCAL_RECEIVER_REQUEST_TIMEOUT_MS = 5_000;
 
 function abortError() {
   const error = new Error('Local receiver request aborted');

src/layers/localAdsb/index.js

@@ -36,18 +36,8 @@ import {
 } from './policy.js';
 import { localAdsbStatus } from './status.js';
 
-export {
-  LAYER_ID as LOCAL_ADSB_LAYER_ID,
-  HEARD_BY_RECEIVER,
-} from './policy.js';
-export {
-  localAdsbCardModel,
-  localAdsbClassLine,
-  localAdsbIsUat,
-  localAdsbReceiverLine,
-  localAdsbTitle,
-} from './card.js';
-export { localAdsbClass } from './enrichment.js';
+export { HEARD_BY_RECEIVER } from './policy.js';
+export { localAdsbCardModel, localAdsbReceiverLine } from './card.js';
 export { localAdsbStatus } from './status.js';
 
 const FEET_TO_METERS = 0.3048;

src/layers/localAdsb/motion.js

@@ -26,7 +26,7 @@ import {
 export const LOCAL_ADSB_HISTORY_MS = 10 * 60_000;
 export const LOCAL_ADSB_HISTORY_POINTS = 600;
 /** A display correction larger than this snaps instead of sliding. */
-export const LOCAL_ADSB_SNAP_M = 3_000;
+const LOCAL_ADSB_SNAP_M = 3_000;
 /** Chord course uses the newest fix at least this much older than the anchor. */
 const CHORD_BASELINE_MS = 2_000;
 /** Turn rate is estimated over this window of heard fixes. */

src/layers/localAdsb/status.js

@@ -24,7 +24,7 @@ function plural(count, one, many) {
  * @param {object[]} feeds Feed statuses from the route.
  * @returns {string}
  */
-export function describeFeedProblems(feeds) {
+function describeFeedProblems(feeds) {
   const byStatus = new Map();
   for (const feed of feeds) {
     if (feed?.status === 'live') continue;
@@ -41,7 +41,7 @@ export function describeFeedProblems(feeds) {
 }
 
 /** Whether the server reported at least one configured feed. */
-export function feedsConfigured(feedState) {
+function feedsConfigured(feedState) {
   return Boolean(
     feedState?.configured === true &&
     Array.isArray(feedState.feeds) &&

src/layers/military/policy.js

@@ -1,10 +1,3 @@
-export {
-  GROUND_FLOOR_WARM_MAX_ALT_M,
-  POSITION_HISTORY_LIMIT,
-  LANDED_MISSING_POLL_LIMIT,
-  MISSING_POLL_LIMIT,
-  ERROR_BACKOFF_INTERVAL,
-} from './recordPolicy.js';
 import * as Cesium from 'cesium';
 import { EMERGENCY_TINT_CSS } from '../../data/aircraftEmergency.js';
 

src/layers/military/queries.js

@@ -366,7 +366,6 @@ export function createQueries({
       const maxRange =
         Number.isFinite(range) && range > 0 ? range : Number.POSITIVE_INFINITY;
 
-      const now = Cesium.JulianDate.now();
       const nearby = [];
 
       for (const [icao24, bb] of flightState._billboards) {

src/layers/military/snapshotRenderer.js

@@ -187,7 +187,6 @@ export function createMilitarySnapshotRenderer({
       // If this is the tracked aircraft, update label text
       // (position updates automatically via dead-reckoning CallbackProperty)
       if (isTracked && flightState._trackedEntity) {
-        const info = flightState.records.data.get(icao24);
         tracking._updateTrackedLabelModel(icao24);
       }
     }

src/layers/radio/policy.js

@@ -10,7 +10,7 @@ export const MARKER_LIFT_M = 2.5;
 
 export const SELECTED_LIFT_M = 5;
 
-export const RADIO_PICK_TOLERANCE_PX = 8;
+const RADIO_PICK_TOLERANCE_PX = 8;
 
 export const RADIO_TUNER_DIRECTORY_LIMIT = 750;
 

src/layers/radio/rendering.js

@@ -259,7 +259,7 @@ export function createRendering({
     layerState._horizonScanCount += 1;
     const occluder = horizonOccluder(layerState._viewer.camera);
     let visibilityChanged = false;
-    for (const [id, record] of layerState._renderById) {
+    for (const record of layerState._renderById.values()) {
       const matches = parts.categories.stationMatchesRadioCategory(
         record.station,
         layerState._filter,

src/layers/recentImagery/display.js

@@ -3,7 +3,12 @@
  * day's readout. The model (`model.js`) stays English and i18n-free because AI
  * tool services import it outside the browser; this module is page-only.
  */
-import { formatDate, formatRelativeTime, t } from '../../i18n/index.js';
+import {
+  formatDate,
+  formatRelativeTime,
+  getLocale,
+  t,
+} from '../../i18n/index.js';
 import { formatQuantity } from '../../ui/unitLabels.js';
 import { dayTime } from './model.js';
 
@@ -26,7 +31,10 @@ export const displayMetres = (value) => formatQuantity(value, 'm');
 /** The readout's words in the page's language; the model keeps them English. */
 export const READOUT_WORDS = Object.freeze({
   date: (day) => displayDay(day, LONG_DAY),
-  daysAgo: (delta) => formatRelativeTime(delta > 0 ? -delta : 0, 'day'),
+  daysAgo: (delta) => {
+    const text = formatRelativeTime(delta > 0 ? -delta : 0, 'day');
+    return getLocale() === 'zh-CN' ? text.replace(/(\d)(?=天)/g, '$1 ') : text;
+  },
   // "Sentinel-2" never breaks at its hyphen: a word joiner follows it
   // (JetBrains Mono has no U+2011 non-breaking hyphen).
   sensor: (sensor) =>

src/layers/recentImagery/model.js

@@ -300,7 +300,7 @@ export function hhmm(iso) {
 }
 
 /** Candidate key: `PRODUCT:YYYY-MM-DD`. */
-export function candidateKey(product, day) {
+function candidateKey(product, day) {
   return `${product}:${day}`;
 }
 

src/layers/satellites/policy.js

@@ -94,9 +94,9 @@ export const TRACK_VIEW_FROM_HIGH_SCALE = 4;
  * attribute, so classification costs nothing per frame.
  */
 
-export const POINT_OUTLINE = Cesium.Color.WHITE.withAlpha(0.3);
+const POINT_OUTLINE = Cesium.Color.WHITE.withAlpha(0.3);
 
-export const _classColor = (group) =>
+const _classColor = (group) =>
   Cesium.Color.fromCssColorString(satelliteClassColor(group));
 
 export const POINT_STYLES = {

src/layers/streetLevel/lineCoverage.test.mjs

@@ -317,7 +317,7 @@ test('a rejected key stops coverage requests until the layer goes off', async ()
 
 test('a rate limit keeps the drawn tiles and asks again once the wait is over', async (t) => {
   t.mock.timers.enable({ apis: ['setTimeout', 'Date'] });
-  const { viewer, source, state, coverage } = setup();
+  const { viewer, source, coverage } = setup();
   coverage.refresh();
   source.calls[0].reject(
     Object.assign(new Error('rate limited'), { retryAfterSec: 30 }),
@@ -593,7 +593,7 @@ test('a tile that fails before the terrain table loads is reported at once, neve
 });
 
 test('the selected sequence is drawn and highlighted even past the per-tile cap', async () => {
-  const { state, source, coverage, centre, viewer } = setup();
+  const { state, source, coverage, centre } = setup();
   const line = (n) => [
     [
       [centre.lon - 0.001, centre.lat + n * 1e-6],

src/layers/streetLevel/photoViewer.js

@@ -17,18 +17,18 @@ const EXPANDED_SELECTORS = [
 ];
 
 /** A photo download (tens of kilobytes to a few megabytes). */
-export const IMAGE_TIMEOUT_MS = 15_000;
+const IMAGE_TIMEOUT_MS = 15_000;
 
 /** A picture file or decoded side past these is refused (a photo is a few MB). */
 export const MAX_IMAGE_BYTES = 48 * 1024 * 1024;
 export const MAX_IMAGE_SIDE = 16_384;
 /** 64 MP: 256 MB once decoded to RGBA. A 16,384 px square is four times that. */
-export const MAX_IMAGE_PIXELS = 8_192 * 8_192;
+const MAX_IMAGE_PIXELS = 8_192 * 8_192;
 /** Where in a file to look for its dimensions (a JPEG's EXIF comes first). */
 const HEADER_BYTES = 256 * 1024;
 
 /** Whether a picture this size is past what the viewer decodes. */
-export function tooManyPixels(width, height) {
+function tooManyPixels(width, height) {
   return (
     width > MAX_IMAGE_SIDE ||
     height > MAX_IMAGE_SIDE ||
@@ -37,7 +37,7 @@ export function tooManyPixels(width, height) {
 }
 
 /** Panorama texture widths: enough for a docked viewer, and for an expanded one. */
-export const PANO_MID_SIZE = Object.freeze([2048, 1024]);
+const PANO_MID_SIZE = Object.freeze([2048, 1024]);
 export const PANO_FULL_SIZE = Object.freeze([4096, 2048]);
 
 /**
@@ -155,7 +155,7 @@ async function loadBitmap(url, timeoutMs, resize, failure, signal) {
  * A picture refused for its size (`tooLarge`): the viewer will not load
  * that file another way, an <img> having no size limit at all.
  */
-export function oversized(failure) {
+function oversized(failure) {
   return Object.assign(new Error(failure), { tooLarge: true });
 }
 

src/layers/streetLevel/providers/kartaview/policy.js

@@ -14,7 +14,7 @@ export const KARTAVIEW_LABEL = 'KARTAVIEW';
  */
 export const KARTAVIEW_API_HOST = 'https://api.kartaview.org';
 /** KartaView's image proxy: resizes a photo given its base64url address. */
-export const KARTAVIEW_CDN_HOST = 'https://cdn.kartaview.org';
+const KARTAVIEW_CDN_HOST = 'https://cdn.kartaview.org';
 
 /** Stable id prefixes for picked primitives; every one starts with `kv:`. */
 export const PICK_PREFIX = Object.freeze({
@@ -140,8 +140,6 @@ export const MASK_SLOW_MESSAGE = msg(
 export const FILTERED_OUT_MESSAGE = msg(
   'None of KartaView’s photos here pass the imagery filter',
 );
-/** Under the SINCE slider while KartaView is lit. */
-export const SINCE_NOTE = '(by upload date)';
 
 /** The UTC calendar day of `ms`, as KartaView's startDate reads it. */
 function utcDay(ms) {

src/layers/streetLevel/providers/panoramax/index.js

@@ -41,8 +41,6 @@ import {
   normalizeItem,
 } from './policy.js';
 
-export { PANORAMAX_PROVIDER_ID } from './policy.js';
-
 /**
  * A tile's bytes decoded by `decode`; a body that is not a vector tile
  * (an HTML error page, a cut-off answer) reads as such, not as a parser's

src/layers/streetLevel/providers/panoramax/policy.js

@@ -15,7 +15,7 @@ export const PANORAMAX_LABEL = 'PANORAMAX';
  */
 export const PANORAMAX_API = 'https://api.panoramax.xyz/api';
 /** The meta-catalogue's web viewer, where the caption link goes. */
-export const PANORAMAX_VIEWER = 'https://api.panoramax.xyz/';
+const PANORAMAX_VIEWER = 'https://api.panoramax.xyz/';
 
 /** Stable id prefixes for picked primitives; every one starts with `pnx:`. */
 export const PICK_PREFIX = Object.freeze({

src/layers/streetLevel/registry.js

@@ -1,6 +1,6 @@
 import { encodeIdSwitches } from '../../data/idSwitches.js';
 
-export const IMAGERY_FILTERS = Object.freeze(['pano', 'since']);
+const IMAGERY_FILTERS = Object.freeze(['pano', 'since']);
 
 export function filtersOf(provider) {
   return provider?.filters ?? IMAGERY_FILTERS;

src/layers/streetLevel/sequenceCones.js

@@ -5,8 +5,8 @@ import { createHorizonCull, metresBetween } from './view.js';
 import { msg } from '../../i18n/index.js';
 
 /** Cones closer than this to the previous kept one are dropped. */
-export const IMAGE_CONE_MIN_SPACING_M = 3;
-export const IMAGE_CONE_SIZE_PX = 26;
+const IMAGE_CONE_MIN_SPACING_M = 3;
+const IMAGE_CONE_SIZE_PX = 26;
 
 /**
  * @typedef {object} ConeImage   One image of a sequence, as the cones draw it.

src/layers/streetLevel/tileCache.js

@@ -1,6 +1,6 @@
 /** Decoded coverage tiles kept, and for how long. */
-export const TILE_CACHE_SIZE = 24;
-export const TILE_CACHE_TTL_MS = 10 * 60_000;
+const TILE_CACHE_SIZE = 24;
+const TILE_CACHE_TTL_MS = 10 * 60_000;
 
 /** Least-recently-used map: reading an entry renews it. */
 export function createLru(limit) {

src/layers/streetLevel/uiState.js

@@ -64,7 +64,7 @@ export function keyAlternatives(providers) {
  * The filter controls a switched-on provider honours (both when none is on).
  * @param {Array<ProviderSnapshot>} providers
  */
-export function filterControls(providers) {
+function filterControls(providers) {
   const active = providers.filter((p) => p.on);
   const honoured = (key) =>
     active.length === 0 ||
@@ -78,7 +78,7 @@ export function filterControls(providers) {
  * note needs no provider name.
  * @param {Array<ProviderSnapshot>} providers
  */
-export function sinceNote(providers) {
+function sinceNote(providers) {
   return providers.some((p) => p.on && p.sinceBasis === 'upload')
     ? t('(by upload date)')
     : null;

src/layers/submarineCables/geometry.js

@@ -33,7 +33,7 @@ export function featureReference(feature) {
   };
 }
 
-export function coordsFromProperty(value) {
+function coordsFromProperty(value) {
   if (!Array.isArray(value) || value.length < 2) return null;
   const lon = Number(value[0]);
   const lat = Number(value[1]);
@@ -41,7 +41,7 @@ export function coordsFromProperty(value) {
   return [lon, lat];
 }
 
-export function coordsFromPoint(value) {
+function coordsFromPoint(value) {
   if (!Array.isArray(value) || value.length < 2) return null;
   const lon = Number(value[0]);
   const lat = Number(value[1]);
@@ -49,7 +49,7 @@ export function coordsFromPoint(value) {
   return [lon, lat];
 }
 
-export function collectLonLat(value, out) {
+function collectLonLat(value, out) {
   if (!Array.isArray(value)) return;
   if (typeof value[0] === 'number' && typeof value[1] === 'number') {
     const lon = Number(value[0]);

src/layers/traffic/footprint.js

@@ -1,9 +1,9 @@
 import * as Cesium from 'cesium';
 import { tilesForBounds, tileToBBox } from '../../data/tomtomTiles.js';
 
-export const RETICLE_RANGE_KM = 10;
-export const RETICLE_TILE_CAP = 16;
-export const tileKey = (tile) => `${tile.z}/${tile.x}/${tile.y}`;
+const RETICLE_RANGE_KM = 10;
+const RETICLE_TILE_CAP = 16;
+const tileKey = (tile) => `${tile.z}/${tile.x}/${tile.y}`;
 const cross = (a, b, c) =>
   (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
 

src/layers/traffic/policy.js

@@ -175,13 +175,3 @@ export const STYLED_MIN_BASE_PX = 5;
 /** @const {number} Maximum tile cache entries before LRU eviction */
 
 export const TILE_CACHE_MAX_ENTRIES = 64;
-
-/**
- * Milliseconds the first dot paint will wait for flow data. Cached flow
- * settles within this window (decode cache, 120 s TTL) and renders fully
- * colored; a cold tile fetch loses the race, dots paint immediately in
- * white, and recolorDotsInPlace applies the colors when flow arrives —
- * field-test round 1's "takes forever to load" was the sequential wait.
- */
-
-export const FLOW_RENDER_RACE_MS = 250;

src/layers/traffic/state.js

@@ -1,6 +1,6 @@
 import { normalizeRoadMode } from './roadModes.js';
 import * as Cesium from 'cesium';
-import { FLOW_BUCKET_COLORS, TRAFFIC_TIMING_ENABLED } from './policy.js';
+import { FLOW_BUCKET_COLORS } from './policy.js';
 
 export function createState({ services }) {
   const layerState = {};

src/layers/transit/ingestion.js

@@ -9,7 +9,6 @@ import {
   FEED_STALE_AFTER_MS,
   MAX_VEHICLES_TOTAL,
   MISSED_POLLS_TO_DROP,
-  TRANSIT_POLL_MS,
   isStaleVehicleFix,
   transitVehicleKey,
   vehicleReportTimeMs,

src/layers/transit/lifecycle.test.mjs

@@ -6,7 +6,6 @@ import {
   FEED_EVICT_AFTER_MS,
   FEED_STALE_AFTER_MS,
   MISSED_POLLS_TO_DROP,
-  SELECTED_CARD_REFRESH_MS,
   TRANSIT_POLL_MS,
   VEHICLE_MAX_FIX_AGE_MS,
 } from './policy.js';
@@ -1407,7 +1406,6 @@ test('the selected card lands where the vehicle stopped, not short of it', async
   // segment ends left it a few metres behind, and then the render hold was
   // released with no frame scheduled to close the gap.
   const app = harness(t);
-  const start = Date.now();
   app.serve('mbta', () => ({
     status: 200,
     body: snapshot('mbta', 'MBTA', [vehicle('b', 42.36, -71.06, reported())], {

src/layers/transit/movement.js

@@ -9,10 +9,7 @@ import {
   correctHeight,
   setTimeOffsetMs,
 } from '../../data/contactPlayback.js';
-export const FIX_HISTORY_MAX = 128;
-export const DISPLAY_LAG_MIN_MS = 25_000;
-export const DISPLAY_LAG_RESET_MS = 90_000;
-export const MODE_MAX_SPEED_MPS = Object.freeze({
+const MODE_MAX_SPEED_MPS = Object.freeze({
   bus: 36, // ~130 km/h — a coach on a motorway
   tram: 28, // ~100 km/h — interurban light rail
   subway: 42, // ~150 km/h
@@ -32,22 +29,19 @@ export const MODE_MAX_SPEED_MPS = Object.freeze({
  * @param {boolean} [inferred] Whether the mode came from a feed default.
  * @returns {number} m/s
  */
-export function speedCeilingMps(mode, inferred = false) {
+function speedCeilingMps(mode, inferred = false) {
   if (inferred) return MODE_MAX_SPEED_MPS.unknown;
   return MODE_MAX_SPEED_MPS[mode] ?? MODE_MAX_SPEED_MPS.unknown;
 }
 
-/** Position deadband is disabled: even a short reported crawl is played. */
-export const FIX_NOISE_M = 0;
-
 /**
  * Displacement (m) a glide must cover before its direction is worth believing.
  * Below this the course derived from it is noise; the last good one is held.
  */
-export const COURSE_MIN_TRAVEL_M = 12;
+const COURSE_MIN_TRAVEL_M = 12;
 
 /** Maximum display-course change per second (deg). A bus is not a gyroscope. */
-export const COURSE_MAX_RATE_DEG_PER_S = 120;
+const COURSE_MAX_RATE_DEG_PER_S = 120;
 /**
  * Longest stretch of elapsed time (s) one evaluation may spend. The limiter
  * used to bank the time since the course last CHANGED, so a vehicle that held
@@ -56,15 +50,7 @@ export const COURSE_MAX_RATE_DEG_PER_S = 120;
  * EVALUATED, and capped here so that even a first look after a long idle
  * sweeps visibly instead of snapping.
  */
-export const COURSE_STEP_MAX_S = 0.25;
-
-/**
- * Consecutive fixes at the same place before a vehicle is called STOPPED.
- * One is not enough: a fifteen-second gap between identical fixes is also what
- * a vehicle waiting at a light looks like, and so is a feed that repeated
- * itself.
- */
-export const STOPPED_FIXES = 2;
+const COURSE_STEP_MAX_S = 0.25;
 
 /**
  * How long after its newest fix a vehicle stops being described as travelling.
@@ -75,7 +61,7 @@ export const STOPPED_FIXES = 2;
  * otherwise is the same overreach as reading STOPPED off a stale status. Ninety
  * seconds matches the threshold at which a whole feed reads as gone quiet.
  */
-export const MOTION_UNKNOWN_AFTER_MS = 90_000;
+const MOTION_UNKNOWN_AFTER_MS = 90_000;
 
 const EARTH_M_PER_DEG = 111_320;
 
@@ -94,29 +80,13 @@ export function fixDistanceM(a, b) {
   return Math.hypot(dLat, dLon);
 }
 
-/**
- * Course in degrees clockwise from north, from one point to another.
- * @param {{lat:number, lon:number}} from
- * @param {{lat:number, lon:number}} to
- * @returns {number} 0-360
- */
-export function courseBetween(from, to) {
-  const dLat = (to.lat - from.lat) * EARTH_M_PER_DEG;
-  const dLon =
-    (to.lon - from.lon) *
-    EARTH_M_PER_DEG *
-    Math.cos((from.lat * Math.PI) / 180);
-  const deg = (Math.atan2(dLon, dLat) * 180) / Math.PI;
-  return (deg + 360) % 360;
-}
-
 /**
  * Shortest signed difference between two courses, in degrees (-180, 180].
  * @param {number} from
  * @param {number} to
  * @returns {number}
  */
-export function courseDelta(from, to) {
+function courseDelta(from, to) {
   let delta = ((to - from + 540) % 360) - 180;
   if (delta === -180) delta = 180;
   return delta;
@@ -259,7 +229,7 @@ export function attachFloorToPlace(entry, fix, heightM) {
       correctHeight(entry.track, scratch.seq, heightM);
   }
 }
-export function displayCourse(entry, nowMs) {
+function displayCourse(entry, nowMs) {
   if (!entry) return null;
   const target = Number.isFinite(entry.sample?.segmentCourseDeg)
     ? entry.sample.segmentCourseDeg

src/layers/transit/movement.test.mjs

@@ -9,7 +9,7 @@ import {
   displacementPlausible,
 } from './movement.js';
 import { buildTransitSelectionCopy } from './policy.js';
-import { seek, sampleAt } from '../../data/contactPlayback.js';
+import { sampleAt } from '../../data/contactPlayback.js';
 const entry = () => {
   const e = { mode: 'bus', modeInferred: false, courseDeg: null };
   initializePlayback(e);

src/layers/transit/policy.js

@@ -99,7 +99,7 @@ export const VISIBILITY_REFRESH_MS = 250;
  * on screen. Generous on purpose: a vehicle that crosses the edge mid-glide
  * should already have been moving, not pop into motion at the border.
  */
-export const VIEW_MARGIN_RATIO = 0.6;
+const VIEW_MARGIN_RATIO = 0.6;
 
 /**
  * Whether a vehicle is close enough to the camera's look-at area to be worth
@@ -516,10 +516,10 @@ export function createTransitSelectedOverlayEntry(key, position, copy, mode) {
 }
 
 /** Modes that ordinarily run below the street, drawn on the surface above themselves. */
-export const UNDERGROUND_MODES = new Set(['subway']);
+const UNDERGROUND_MODES = new Set(['subway']);
 
 /** The mode in plain words, for a card a person reads rather than scans. */
-export const TRANSIT_MODE_WORD = Object.freeze({
+const TRANSIT_MODE_WORD = Object.freeze({
   bus: msg('Bus'),
   tram: msg('Tram'),
   subway: msg('Subway'),
@@ -529,7 +529,7 @@ export const TRANSIT_MODE_WORD = Object.freeze({
 });
 
 /** Short, fixed-width mode word for the detection card's class field. */
-export const TRANSIT_MODE_ABBR = Object.freeze({
+const TRANSIT_MODE_ABBR = Object.freeze({
   bus: 'BUS',
   tram: 'TRAM',
   subway: 'METRO',
@@ -588,7 +588,7 @@ export function transitDetectionId(record, feed = null) {
 }
 
 /** Longest route text the single-line detection label can carry. */
-export const DETECTION_ID_MAX_CHARS = 14;
+const DETECTION_ID_MAX_CHARS = 14;
 
 /**
  * Cut long route text with an ellipsis, so a reader can see it was cut.
@@ -600,7 +600,7 @@ export const DETECTION_ID_MAX_CHARS = 14;
  * @param {string} text
  * @returns {string} Uppercase, at most DETECTION_ID_MAX_CHARS characters.
  */
-export function elideRouteText(text) {
+function elideRouteText(text) {
   const value = String(text || '').toUpperCase();
   if (value.length <= DETECTION_ID_MAX_CHARS) return value;
   return `${value.slice(0, DETECTION_ID_MAX_CHARS - 1)}\u2026`;
@@ -659,6 +659,6 @@ export function transitDetectionMetric(
  * @param {number} [nowMs]
  * @returns {string}
  */
-export function transitVehicleState(entry, nowMs = Date.now()) {
+function transitVehicleState(entry, nowMs = Date.now()) {
   return displayMotion(entry, nowMs).word;
 }

src/layers/transit/rendering.js

@@ -22,7 +22,6 @@ import {
 import {
   MARKER_PIXEL_SIZE,
   ROTATION_REFRESH_MS,
-  SELECTED_CARD_REFRESH_MS,
   VISIBILITY_REFRESH_MS,
   SELECTED_PIXEL_SIZE,
   TRANSIT_MODE_COLORS,

src/layers/vessels/cards.js

@@ -12,8 +12,6 @@ export function createCards({
   layer,
   options,
 }) {
-  const { state } = vesselState;
-
   function updateSelectedVesselHud(record) {
     const el = document.getElementById('hud-ais-vessel');
     if (!el) return;

src/layers/vessels/policy.js

@@ -1,8 +1,3 @@
-export {
-  PARTIAL_RETENTION_MS,
-  SELECTED_PIN_REFRESHES,
-  AIS_FIRST_CONNECT_LABEL,
-} from './recordPolicy.js';
 import { VESSEL_LABEL_GRID_PX } from '../../data/vesselLabels.js';
 import { msg } from '../../i18n/index.js';
 

src/layers/weather/index.js

@@ -296,10 +296,6 @@ export function createWeatherLayer({
       motion?.addEventListener?.('change', onVisibility);
       documentRef?.addEventListener?.('visibilitychange', onVisibility);
       registerClock();
-      removeCamera = viewer.camera.moveEnd?.addEventListener(() => {
-        checkHost();
-        if (enabled) notify();
-      });
     },
     attachShellServices(services) {
       imageryHost =
@@ -315,10 +311,18 @@ export function createWeatherLayer({
     },
     enable() {
       enabled = true;
+      if (!removeCamera) {
+        removeCamera = viewer.camera.moveEnd?.addEventListener(() => {
+          checkHost();
+          notify();
+        });
+      }
       registerClock();
     },
     disable() {
       enabled = false;
+      removeCamera?.();
+      removeCamera = null;
       unregisterClock?.();
       unregisterClock = null;
       ++generation;
@@ -357,7 +361,7 @@ export function createWeatherLayer({
           signal: controller.signal,
         });
         if (!enabled || controller.signal.aborted || request !== controller)
-          return false;
+          return enabled && !signal?.aborted && request !== controller;
         if (snapshot.unavailable) {
           error = msg(
             'Weather source unavailable; previous observation retained',
@@ -376,7 +380,9 @@ export function createWeatherLayer({
           )
             await show(snapshot.latest, controller.signal);
           return (
-            !controller.signal.aborted && request === controller && enabled
+            enabled &&
+            !signal?.aborted &&
+            (!controller.signal.aborted || request !== controller)
           );
         }
         const time =
@@ -388,9 +394,14 @@ export function createWeatherLayer({
           (satellite && rendering.getDiagnostics().infrared !== infrared)
         )
           await show(time, controller.signal);
-        return !controller.signal.aborted && request === controller && enabled;
+        return (
+          enabled &&
+          !signal?.aborted &&
+          (!controller.signal.aborted || request !== controller)
+        );
       } catch (cause) {
-        if (controller.signal.aborted || request !== controller) return false;
+        if (controller.signal.aborted || request !== controller)
+          return enabled && !signal?.aborted && request !== controller;
         error = cause?.message || msg('Weather unavailable');
         stop();
         return true;

src/layers/weather/source.js

@@ -4,7 +4,7 @@ import { readResponseJsonCapped } from '../../sources/httpBody.js';
 // the weather layer translates them where it shows them (t / translateKnown).
 const msg = (text) => text;
 
-export const WEATHER_PRODUCTS = Object.freeze([
+const WEATHER_PRODUCTS = Object.freeze([
   'radar',
   'clouds',
   'clouds-regional',

src/layers/weather/weather.test.mjs

@@ -694,7 +694,11 @@ test('superseding a pending stage preserves the newer manifest loading state', a
   await flush();
   const newer = h.layer.update();
   await flush();
-  assert.equal(await old, false);
+  assert.equal(
+    await old,
+    true,
+    'replacement is accepted by the enable lifecycle',
+  );
   assert.equal(
     h.layer.getStats().loading,
     true,
@@ -2311,3 +2315,44 @@ for (const product of ['radar', 'clouds-regional', 'lightning']) {
     assert.equal(h.viewer.camera.moveEnd.size, 0);
   });
 }
+
+test('a product replacement accepts supersession but never paints the obsolete first response', async () => {
+  const pending = [];
+  const h = layerHarness({
+    id: 'weather-satellite',
+    feed: {
+      getSnapshot: (args) => {
+        const task = deferred();
+        pending.push({ ...args, ...task });
+        return task.promise;
+      },
+    },
+  });
+  const first = h.layer.update();
+  h.layer.setParams({ product: 'clouds' });
+  assert.equal(pending.length, 2);
+  pending[0].resolve({ ...snapshot, product: 'clouds-regional' });
+  assert.equal(await first, true);
+  assert.equal(h.stages.length, 0);
+  pending[1].resolve({ ...snapshot, product: 'clouds' });
+  await flush();
+  h.stages.at(-1).finish();
+  await flush();
+  assert.equal(h.layer.getParams().product, 'clouds');
+  h.layer.destroy();
+});
+
+test('disabled weather releases its camera listener and re-enabling binds only once', () => {
+  const h = layerHarness();
+  h.layer.disable();
+  assert.equal(h.moveEnd.size, 0, 'disabled layers own no active camera work');
+  h.layer.enable();
+  h.layer.enable();
+  assert.equal(h.moveEnd.size, 1);
+  h.layer.disable();
+  assert.equal(h.moveEnd.size, 0);
+  h.layer.enable();
+  assert.equal(h.moveEnd.size, 1);
+  h.layer.destroy();
+  assert.equal(h.moveEnd.size, 0);
+});

src/layers/wind/gpuRendering.js

@@ -6,8 +6,8 @@ import {
   WIND_NARROW_PATH_LIMIT,
 } from './streamlines.js';
 
-export const WIND_FADE_LOW_METERS = 15000;
-export const WIND_FADE_HIGH_METERS = 60000;
+const WIND_FADE_LOW_METERS = 15000;
+const WIND_FADE_HIGH_METERS = 60000;
 
 // Original material: a persistent fine curve plus a moving, tapered highlight.
 // The integer part of s identifies a path; its fractional part follows the wind.

src/layers/wind/index.js

@@ -180,7 +180,7 @@ export function createWindLayer({
           overlay: requestedScalar(),
         });
         if (!enabled || controller.signal.aborted || request !== controller)
-          return false;
+          return enabled && !signal?.aborted && request !== controller;
         manifest = snapshot;
         error = null;
         if (sampledPosition) sample(sampledPosition);
@@ -194,7 +194,8 @@ export function createWindLayer({
         }
         return true;
       } catch (cause) {
-        if (controller.signal.aborted || request !== controller) return false;
+        if (controller.signal.aborted || request !== controller)
+          return enabled && !signal?.aborted && request !== controller;
         error = cause?.message || msg('Wind source unavailable');
         return true;
       } finally {

src/layers/wind/index.test.mjs

@@ -97,7 +97,7 @@ const complete = (model, extra = {}) => ({
 });
 test('local appearance and units reuse the loaded field; optional scalar requests remain separate', async () => {
   const requests = [];
-  const { layer, calls } = harness({
+  const { layer } = harness({
     getSnapshot: async (args) => {
       requests.push(args);
       return complete(
@@ -412,3 +412,36 @@ test('wind unit chips appear only alongside a speed legend, including canvas tra
   for (const overlay of ['pressure', 'temperature', 'none']) { layer.setParams({ overlay }); assert.deepEqual(unitChips(), []); }
   layer.destroy();
 });
+
+test('a parameter replacement during manager enable does not roll the layer back', async () => {
+  const { LayerLifecycle } = await import('../../data/lifecycle.js');
+  const pending = [];
+  const rendering = Object.fromEntries(
+    ['attach', 'start', 'stop', 'clear', 'destroy', 'setField'].map((name) => [
+      name,
+      () => {},
+    ]),
+  );
+  const layer = createWindLayer({
+    feed: {
+      getSnapshot: (args) =>
+        new Promise((resolve) => pending.push({ ...args, resolve })),
+    },
+    createRendering: () => rendering,
+  });
+  const manager = new LayerLifecycle({ container: {} });
+  manager.register(layer);
+  const enabled = manager.setEnabled('wind', true);
+  for (let i = 0; i < 20 && !pending.length; i++) await Promise.resolve();
+  layer.setParams({ model: 'ifs' });
+  await Promise.resolve();
+  pending[0].resolve(snapshot('gfs'));
+  assert.equal(await enabled, true);
+  assert.equal(manager.isEnabled('wind'), true);
+  assert.equal(layer.getStats().loading, true);
+  pending[1].resolve(snapshot('ifs'));
+  for (let i = 0; i < 10; i++) await Promise.resolve();
+  assert.equal(layer.getStats().model, 'IFS');
+  assert.equal(layer.getStats().count, 4);
+  await manager.destroyAll();
+});