chore: remove unused imports and local helpers

Drop module-local helpers that nothing calls (linkAbort, summarize,
stringOption, summarizeEntity and the polygonCenter, propertyObject and
unwrapProperties helpers only it used, CALLOUT_DOT_SIZE_PX) and unused
import specifiers in runtime modules, tests, QA scripts and tools.

None of the removed bindings is exported. Re-exports such as the ALPR
policy constants and every package export are unchanged.

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,

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/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';

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/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,