i18n: fix the final pre-merge review findings

Fixes the P1 and the confirmed P2 findings of the final review of the
i18n branch.

- CI: the air-quality model no longer imports i18n (portable module),
  so check:boundaries passes again.
- Air quality layer: named in the layer panel, HUD and voice; its
  Weather card, bands and errors translate. A test keeps the layer-name
  table in step with the layer registry.
- Layer statuses that still reached ru/es in English: GNSS, CelesTrak,
  Transit loading and feed errors, launches, perimeters, ALPR, ECCC,
  wind "field unavailable", Local ADS-B streaming lines.
- Voice and HUD: preset ids show city names ("Fly to San Francisco"),
  the HUD city translates, cockpit refusals cover frame, aircraft and
  satellite; empty Transit notes translate on the analyst card.
- tn() keeps a caller's formatted count ("12,345 map objects").
- Cyber HUD: the language button no longer covers the bottom-right
  card or the cockpit position readout.
- CCTV buttons wrap only in non-English locales; English layout matches
  main again.
- Switching language asks first when Provider Settings holds unsaved
  keys.

Catalogs: es/ru 2611 messages each, complete.

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

src/layers/transit/ingestion.js

@@ -476,6 +476,8 @@ export function createIngestion({ state, services, parts, source }) {
           `[Data:Transit] ${feed.id} poll failed:`,
           error?.message || error,
         );
+        // English data; the panel shows it through FEED_ERROR_PATTERNS
+        // (ui/layerPanel.js).
         status.error = `${feed.name} feed unavailable`;
         status.retryInSec = Number.isFinite(error?.retryInSec)
           ? error.retryInSec

src/layers/transit/queries.js

@@ -246,9 +246,11 @@ export function createQueries({ state, parts }) {
           error: null,
           source: 'GTFS-RT',
           status: 'zoom-in',
+          // English data (the analyst's empty note to the model); the voice
+          // card shows it through NOTE_PATTERNS (voice/resultDisplay.js).
           coverage: state._altitudeGateOpen
             ? `No feed here yet · ${TRANSIT_ENABLED_FEEDS.length} regions available`
-            : `Fly below ${Math.round(ACTIVATION_ALTITUDE_M / 1000).toLocaleString()} km to a covered region`,
+            : `Fly below ${Math.round(ACTIVATION_ALTITUDE_M / 1000).toLocaleString('en-US')} km to a covered region`,
         };
       }
       // Age is shown by the same rule the row state uses, so the text and the
@@ -276,6 +278,8 @@ export function createQueries({ state, parts }) {
           : {}),
         degraded: count > 0 && health.degraded,
         loading: health.loading && count === 0,
+        // English data; the panel shows it through LOADING_LABEL_PATTERNS
+        // (ui/layerPanel.js).
         loadingLabel:
           health.loading && count === 0
             ? `Loading ${active.map((feed) => feed.name).join(', ')}`