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/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,