address review findings on voice outlines

- remove the unused Nominatim reserve(); spacing tests now measure the
  actual transport start across processes
- start each queued building's 2 s ground-sampling budget when it
  reaches the head of the queue, and request a frame on promotion
- accept Nominatim and grounds outlines that cross the antimeridian
- let an unnamed school, university, hospital, cemetery, stadium or zoo
  area answer a grounds ask whose head noun names that kind, using only
  the part that holds the point; compare grounds names symmetrically
- charge shared OpenFreeMap consumers their own slice and keep the
  charged budget at the previous 64 MiB
- share one place-name fold, point-in-polygon, line stitching and
  nextTask helper instead of duplicates
- exclude Who's On First sources licensed only as "CC BY (equivalent)"
  or "CC0 (equivalent)"; rebuild the pack from the pinned archives
- whole-word neighbourhood alias guard; correct the outline size-limit
  comment
- restore DATA_SOURCES.md table formatting, keeping only real edits
- test behaviour instead of private engine fields

server/providers/regional/nominatimCache.js

@@ -1,6 +1,7 @@
 import crypto from 'node:crypto';
 import fs from 'node:fs/promises';
 import path from 'node:path';
+import { foldPlaceName } from '../../../src/data/placeNames.js';
 
 const DAY_MS = 86_400_000;
 
@@ -15,24 +16,14 @@ export const NOMINATIM_CACHE_TTL_MS = Object.freeze({
 });
 
 /**
- * Comparable form of a place name: Unicode-normalized (NFKC), Latin accents
- * removed, case folded, punctuation and symbols collapsed to single spaces,
- * and a leading article dropped. Non-Latin scripts are kept as they are:
- * "東京" stays "東京", while "São Paulo", "sao paulo" and "SÃO PAULO!" meet.
+ * Comparable form of a place name for matching results to the ask: the
+ * shared fold (see `foldPlaceName`), bounded in length.
  *
  * @param {string} value
  * @returns {string}
  */
 export function normalizePlaceName(value) {
-  return String(value ?? '')
-    .normalize('NFKD')
-    .replace(/(\p{Script=Latin})\p{M}+/gu, '$1')
-    .normalize('NFKC')
-    .toLocaleLowerCase('en-US')
-    .replace(/[\p{P}\p{S}\p{Z}\s]+/gu, ' ')
-    .trim()
-    .replace(/^(?:the) /, '')
-    .slice(0, 200);
+  return foldPlaceName(value).slice(0, 200);
 }
 
 /**