Merge origin/main: Google Street View, KartaView and Panoramax on the slim Street Level

Main gained three imagery providers (Google Street View, KartaView,
Panoramax), shared line-coverage, cone and photo-viewer modules, one source
lit at a time and the translated interface. Their shared modules still
carried what this branch removes, so the merge ports them onto it:

- lineCoverage.js is this branch's coverage.js made provider-neutral
  (draped lines near the ground only, the selection drawn over them, key
  and rate-limit blocking); sequenceCones.js is sequences.js the same way.
  Mapillary, KartaView and Panoramax all build on them; Mapillary moves
  back to providers/mapillary/ beside the others.
- No ground casting, mesh sampling, surface modes, FOLLOW, legend, prewarm,
  orbit overview points (Panoramax's density dots included), stale-tile
  swaps or water-filled point budget come back.
- Kept from main because the new providers need them: requiresMapStack and
  attachMapStackController (Street View on Google 3D only), ground clicks,
  openNearest with an optional provider nearestImage, openImage {frame},
  reportError, the view-cone marker (now an SVG glyph), filters /
  coverageLabel / sinceBasis, OPEN STREET VIEW, keyAlternatives and i18n.
- photoViewer.js treats the viewer as expanded when its wrap is full screen
  or the iPhone popover, as EXPAND now is.
- The fixture browser gate keeps its 8 steps and adds one each for
  KartaView and Panoramax; catalogs, docs, boundaries and format scope
  follow.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

package.json

@@ -35,8 +35,11 @@
     "doctor": "node scripts/setup-doctor.mjs",
     "format": "node scripts/format.mjs --write",
     "format:check": "node scripts/format.mjs --check",
+    "i18n": "node scripts/i18n.mjs",
     "layer-token:next": "node scripts/next-layer-state-token.mjs",
     "layer-token:check": "node scripts/check-layer-state-tokens.mjs",
+    "changelog": "node scripts/assemble-changelog.mjs --write",
+    "changelog:check": "node scripts/assemble-changelog.mjs --check",
     "dev": "vite",
     "dev:secure": "./scripts/dev-secure.sh",
     "opensky:import": "./scripts/opensky-import-client.sh",
@@ -164,6 +167,7 @@
     "./layers/recent-imagery": "./src/layers/recentImagery/index.js",
     "./layers/recent-imagery/source": "./src/layers/recentImagery/source.js",
     "./layers/perimeters": "./src/layers/perimeters/index.js",
+    "./layers/gnss": "./src/layers/gnss/index.js",
     "./sources/firms-csv": "./src/data/firmsCsv.js",
     "./layers/firms": "./src/layers/firms/index.js",
     "./layers/satellites": "./src/layers/satellites/index.js",
@@ -175,6 +179,7 @@
     "./layers/directions": "./src/layers/directions/index.js",
     "./layers/directions/source": "./src/layers/directions/source.js",
     "./layers/cctv": "./src/layers/cctv/index.js",
+    "./layers/air-quality": "./src/layers/airQuality/index.js",
     "./layers/alpr": "./src/layers/alpr/index.js",
     "./layers/radio": "./src/layers/radio/index.js",
     "./layers/submarine-cables": "./src/layers/submarineCables/index.js",
@@ -235,8 +240,10 @@
     "./layers/alpr/source": "./src/layers/alpr/source.js",
     "./layers/bikeshare/source": "./src/layers/bikeshare/source.js",
     "./layers/cctv/source": "./src/layers/cctv/source.js",
+    "./layers/air-quality/source": "./src/layers/airQuality/source.js",
     "./layers/earthquakes/source": "./src/layers/earthquakes/source.js",
     "./layers/perimeters/source": "./src/layers/perimeters/source.js",
+    "./layers/gnss/source": "./src/layers/gnss/source.js",
     "./layers/firms/source": "./src/layers/firms/source.js",
     "./layers/installations/source": "./src/layers/installations/source.js",
     "./layers/launches/source": "./src/layers/launches/source.js",
@@ -262,8 +269,9 @@
       "node": "./server/providers/mapillary.js"
     },
     "./layers/street-level": "./src/layers/streetLevel/index.js",
-    "./layers/street-level/mapillary": "./src/layers/streetLevel/mapillaryProvider.js",
-    "./layers/street-level/mapillary/source": "./src/layers/streetLevel/source.js",
+    "./layers/street-level/mapillary": "./src/layers/streetLevel/providers/mapillary/index.js",
+    "./layers/street-level/mapillary/source": "./src/layers/streetLevel/providers/mapillary/source.js",
+    "./layers/street-level/google": "./src/layers/streetLevel/providers/google/index.js",
     "./tools": "./src/tools/index.js",
     "./tools/mcp": "./src/tools/mcp/index.js",
     "./tools/panel": "./src/tools/panel.js",