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

docs/CURRENT-STATE.md

@@ -5370,7 +5370,7 @@ request viewbox and continues searching without that geographic preference.
 
 - Runtime entry: `src/main.js` calls `initAnnotations({ viewer, tileset })`, exposes `window.__gevAnnotations`, and passes the engine into the voice action runner.
 - Engine contract: `src/annotations/annotationEngine.js` owns annotation state, TTL/fade lifecycle, concurrent anchor resolution, duplicate detection keyed on geometry, cancellation on clear/newer generations, and a hard cap of 120 live marks. Deferred outline upgrades drain FIFO at concurrency 2; queued work retains the owning abort controller and is discarded on a generation change before it can fetch.
-- Resolver contract: `src/annotations/resolver.js` converts names, coordinates and screen pixels into world anchors and optional geometry. Google Geocode/Places supplies a centroid and scope; route requests use `/api/route`; ambiguous or distant results are rejected or recovered near the current view instead of drawing misleading blobs. Outline resolution keeps this order: bundled admin/place/neighborhood/Natural Earth geometry; OpenFreeMap street or pointed-building geometry where applicable; the configured OSM/Overpass admin/place/footprint/street/enclosing-area ladder; guarded Nominatim for eligible named cities, admin units, landmarks, buildings and grounds; then an OpenFreeMap building fallback that accepts a named building only when its resolved anchor lies in the selected filled footprint. Pointed-at building requests retain nearby selection within 40 m. If no rung can supply honest geometry, the mark remains a point or reports the capability unavailable. A real polygon, definitive miss, configured-ladder approximation, rate limit or transient result keeps its existing finality; Nominatim is only tried after higher-priority configured sources cannot answer. Building tile selection returns the selected component and its holes; a shared vector feature ID does not establish that unrelated components are one building. Other trusted multi-part outlines and holes are retained in `anno.polygons`, with `ring` anchored to the part whose filled area contains the resolved point, outside its holes, when possible. Missing capability never invents a radius outline. Only explicitly country/state/county-scoped asks bypass near-view recovery and proximity gating; state scope requires a leading `state of …`/`the state of …` phrase, while bare names, proper names ending in “State,” and administrative geocode result types alone remain guarded. Overpass throttles remain distinct from normal transients: `Retry-After` is honored for one retry, and a repeated throttle ends only that mark's outline upgrade.
+- Resolver contract: `src/annotations/resolver.js` converts names, coordinates and screen pixels into world anchors and optional geometry. Google Geocode/Places supplies a centroid and scope; route requests use `/api/route`; ambiguous or distant results are rejected or recovered near the current view instead of drawing misleading blobs. Outline resolution keeps this order: bundled admin/place/neighborhood/Natural Earth geometry; OpenFreeMap street or pointed-building geometry where applicable; the configured OSM/Overpass admin/place/footprint/street/enclosing-area ladder; guarded Nominatim for eligible named cities, admin units, landmarks, buildings and grounds; then an OpenFreeMap building fallback that accepts a named building only when its resolved anchor lies in the selected filled footprint. Pointed-at building requests retain nearby selection within 40 m. Tile grounds answer a named grounds ask only from an area of the same name, or, when the ask's head noun names a kind of grounds (school, university/college, hospital, cemetery, stadium, zoo; "campus" alone names none), from the part of the smallest unnamed area of that class that holds the anchor (a class word elsewhere in a name, as in "University Avenue Park", does not count); a differently named area never answers. If no rung can supply honest geometry, the mark remains a point or reports the capability unavailable. A real polygon, definitive miss, configured-ladder approximation, rate limit or transient result keeps its existing finality; Nominatim is only tried after higher-priority configured sources cannot answer. Building tile selection returns the selected component and its holes; a shared vector feature ID does not establish that unrelated components are one building. Other trusted multi-part outlines and holes are retained in `anno.polygons`, with `ring` anchored to the part whose filled area contains the resolved point, outside its holes, when possible. Missing capability never invents a radius outline. Only explicitly country/state/county-scoped asks bypass near-view recovery and proximity gating; state scope requires a leading `state of …`/`the state of …` phrase, while bare names, proper names ending in “State,” and administrative geocode result types alone remain guarded. Overpass throttles remain distinct from normal transients: `Retry-After` is honored for one retry, and a repeated throttle ends only that mark's outline upgrade.
 - With no detailed-feature capability, annotations retain their pins and say
   "Detailed outline unavailable"; location focus reports the same result without
   retrying. Missing capability never synthesizes an outline from a radius.
@@ -5936,8 +5936,14 @@ easier to meet (detection is now on more often), but does not create it.
   Only eligible road geometry receives dots;
   reverse one-way lines are reversed. The shared tile source caps each view at
   16 tiles per pass (32 OpenFreeMap tiles total), four concurrent requests and 4 MiB per response. OpenFreeMap retains
-  up to 192 decoded tiles/64 MiB (four times body bytes as a storage estimate);
-  other tile sources retain the 64-tile/24 MiB defaults. Identical source-version/XYZ
+  up to 192 decoded tiles/32 MiB in one shared decoded cache (four times body
+  bytes as a storage estimate); traffic and installations each keep their own
+  slice of those tiles within 12 MiB and outlines within 8 MiB, charged at the
+  slice's estimated object size. The charged budgets total 64 MiB, the budget
+  of the single OpenFreeMap source traffic and installations shared before;
+  they are estimates, not a measured heap bound, and each consumer slice is a
+  copy (`structuredClone`) made once per cached tile. Other tile sources retain
+  the 64-tile/24 MiB defaults. Identical source-version/XYZ
   requests share one download/decode, with independent caller cancellation. Parsed road views have a separate 24 MiB/64-entry cap; incomplete
   views are not retained as complete snapshots. Buffer geometry is clipped and sub-12 m line slivers dropped; tile
   road fragments are not stitched. Roads preserve bends and insert