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.

scripts/qa-failstate-b10.mjs

@@ -34,10 +34,6 @@
 import puppeteer from 'puppeteer';
 import fs from 'node:fs';
 import path from 'node:path';
-import { fileURLToPath } from 'node:url';
-
-const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const REPO_ROOT = path.resolve(__dirname, '..');
 
 const argv = process.argv.slice(2);
 const getOpt = (name, dflt) => {

scripts/qa-labels.mjs

@@ -86,14 +86,6 @@ function percentile(values, pct) {
   return sorted[Math.min(sorted.length - 1, Math.ceil(sorted.length * pct) - 1)];
 }
 
-function parseJson(value, fallback) {
-  try {
-    return JSON.parse(value);
-  } catch {
-    return fallback;
-  }
-}
-
 function analyzeMembership(samples) {
   let replacements = 0;
   let exposure = 0;

scripts/qa-street-level.mjs

@@ -30,7 +30,6 @@ import {
 import {
   answerKartaViewRequest,
   describeKartaViewCall,
-  KV_LINE,
   KV_SEQUENCE_ID,
   kartaViewPhotos,
   resetKartaViewFixture,

scripts/qa-transit.mjs

@@ -47,8 +47,6 @@ import {
   reduceScenario,
   reduceSensorContrast,
   reduceScriptedMotion,
-  reduceMotion,
-  reduceFleet,
 } from '../src/layers/transit/qaMetrics.js';
 
 const BASE = process.env.QA_BASE_URL || 'http://localhost:4173';

scripts/qa-weather-swap.mjs

@@ -8,13 +8,7 @@
  *   node scripts/qa-weather-swap.mjs --url http://localhost:4173 --label google
  *     [--layer weather-satellite] [--product clouds] [--headless]
  */
-import {
-  existsSync,
-  mkdirSync,
-  readdirSync,
-  readFileSync,
-  writeFileSync,
-} from 'node:fs';
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs';
 import path from 'node:path';
 import puppeteer from 'puppeteer';
 

scripts/run-unit-tests.mjs

@@ -1,7 +1,7 @@
 import { readdirSync } from 'node:fs';
 import { spawnSync } from 'node:child_process';
 import path from 'node:path';
-import { fileURLToPath, pathToFileURL } from 'node:url';
+import { pathToFileURL } from 'node:url';
 
 export const ALLOCATION_TEST_FILES = Object.freeze([
   'src/data/focusAllocations.test.mjs',