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/panelEscape.test.mjs

@@ -6,7 +6,6 @@ const radioPresentation = readRadioSource(new URL('./ui/radioPresentation.js', i
 const radioControlsSource = readRadioSource(new URL('./ui/radioControls.js', import.meta.url), 'utf8');
 import { bindPanelDisclosure, collapsePanelOnEscape } from './ui/panelDisclosure.js';
 import assert from 'node:assert/strict';
-import fs from 'node:fs';
 import test from 'node:test';
 
 const source = readShellSource();