fix: complete GhostMaps locale and voice integration with current main

docs/CURRENT-STATE.md

@@ -5330,6 +5330,7 @@ request viewbox and continues searching without that geographic preference.
   - The row reads `LIVE` while the stream is open. A five-minute catalog read is the backstop.
 - **Files.** `/api/ghostmaps/file/{product}` serves only catalog products. Files are downloaded by commit-pinned raw URLs, so a CDN cannot return an older edition. They are cached on disk by blob sha, and blobs no current product uses are pruned. A request whose `?v=` names the current blob is `immutable`. Repository paths never reach the page.
 - **Source ownership.** The application catalog receives `sources['s2-ghostmaps']` through the shared source contracts; an omitted or null source stays unavailable without opening a stream or fetching. The standalone source factory supplies the same-origin implementation and accepts replacements. Packed-image URLs are released on cancelled or failed product construction, and remain owned by a successfully loaded product until it is removed.
+- **Voice and locales.** S2 can be toggled through its registered id and aliases. The model already sees the S2 GhostMaps brand in the id, and compact alias-hint separators keep the complete voice prompt within its existing 52,000-character limit; accepted aliases are unchanged. The row and reports are translated in Spanish, Russian and Simplified Chinese.
 - **Rendering.** The page parses the KMZ with the import module's zip, KMZ and XML helpers into one `CustomDataSource` per product.
   - Points become ground-clamped billboards with the depth test off, so they never sink into terrain or 3D tiles. Because the Google 3D map hides the globe, nothing else would stop far-side pins drawing through the planet. Pins are therefore horizon-culled with Street Level's `createHorizonCull` before their first frame and again whenever the camera moves.
   - Lines and polygon outlines are ground-clamped polylines.