Merge upstream main (OSM sea-mark and ski-piste overlays) into pr/street-level-show-action

Keeps main's locale catalogs and re-adds this PR's eight Street Level strings; re-pins the Realtime payload digests for main's two new overlay layers, where the unchanged tools match main's pin, so show_street_level is still the whole difference.

src/voice/layerManifest.js

@@ -71,6 +71,18 @@ const layers = [
     context: false,
     noQuery: 'published third-party intel placemarks; not analyst records',
   },
+  {
+    id: 'sea-marks',
+    aliases: ['seamarks', 'nautical charts', 'buoys', 'openseamap'],
+    context: false,
+    noQuery: 'raster tile overlay; no countable records',
+  },
+  {
+    id: 'ski-pistes',
+    aliases: ['ski slopes', 'ski runs', 'snow map', 'opensnowmap'],
+    context: false,
+    noQuery: 'raster tile overlay; no countable records',
+  },
   {
     id: 'flights',
     track: true,