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-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';