i18n: fix review findings and polish ru/es strings

Fixes the 51 P0–P2 findings from the full review of the i18n branch and
the issues found while checking every new string on screen in ru and es.

- Translate errors and statuses that still reached ru/es in English:
  feed and tile errors, provider statuses, the ALPR chip, the traffic
  mode chip, voice plan step labels, fire feed values, receiver bands,
  scene save reasons and the Cesium attribution link.
- Show preset city names in the UI language (src/ui/placeNames.js);
  data and everything sent to the model stay English.
- Share layer names between the layer panel, HUD and voice card
  (src/ui/layerNames.js).
- Keep long ru/es strings whole: voice card error lines, analyst
  titles, the voice tier status, the Nepal evidence button, the ALPR
  retry chip. English layout is unchanged.
- Ask before a language switch drops unsaved work.
- Catalog fixes: glossary terms (пуск, пресет), gender agreement and
  consistent "peticiones" in es, fewer calques in both languages.
- Fix English text that was itself wrong (e.g. "Exit cockpit to fly to
  a weather", raw tool ids in voice plan steps).

Catalogs: es/ru 2535 messages each, complete.

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

docs/CURRENT-STATE.md

@@ -3098,11 +3098,18 @@ Shipped locales: **en** (source and fallback), **es** and **ru**. The code lives
   `data-i18n-title` / `-aria-label` / `-placeholder` (that attribute's English
   value). English has no catalog; every other locale is
   `src/i18n/locales/<code>.json`, and a missing entry falls back to English.
-- **Locale choice.** `?lang=` (one-shot) → stored choice (`gev:locale:v1`) →
-  `navigator.languages` → English. The language switch in the Visual Presets dock
-  stores the choice and reloads, so nothing re-renders live.
+- **Locale choice.** `?lang=` → stored choice (`gev:locale:v1`) →
+  `navigator.languages` → English. `?lang=` is not stored: it applies while it
+  stays in the address, and the copied share link drops it, so a recipient keeps
+  their own language. The language switch in the Visual Presets dock stores the
+  choice, removes `?lang=` (keeps it only where storage is blocked) and reloads,
+  so nothing re-renders live; it asks first when the reload would lose work
+  (unsaved CCTV calibration, the open cockpit, Draw marks on the board,
+  imported map files, an active voice session — each registered through
+  `registerUnsavedWork`).
 - **Gate.** `npm run i18n` (and `src/i18n/catalog.test.mjs` under `npm test`)
-  extracts every message and fails on missing, unused, placeholder-mismatched or
+  extracts every message and fails on missing, empty, unused,
+  placeholder-mismatched, still-English (plural forms included) or
   wrongly-shaped plural entries.
 - **Not translated by design:** layer ids, share-link and hash parameters, API
   fields, voice tool schemas, provider names, feed data (callsigns, vessel and