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.

scripts/package-boundaries.json

@@ -2353,6 +2353,7 @@
       "src/data/groundSnap.js",
       "src/data/iconOrientation.js",
       "src/data/infrastructure.js",
+      "src/data/osmOverlays.js",
       "src/data/installationFeedback.js",
       "src/data/labelArbiter.js",
       "src/data/idSwitches.js",
@@ -3283,6 +3284,7 @@
       "src/data/geoid.js",
       "src/data/iconOrientation.js",
       "src/data/infrastructure.js",
+      "src/data/osmOverlays.js",
       "src/data/installationFeedback.js",
       "src/data/satellitePass.js",
       "src/data/labelArbiter.js",