feat(i18n): presentation extraction — t() call sites, data-i18n templates, locale selector

Route every application-owned presentation string through the i18n
core: t() call sites across the app/layers/ui/data/voice surfaces,
data-i18n* attributes in the src/ui/templates/*.html markup (applied at
boot by applyDocumentTranslations from src/standalone/application.js),
and the dock locale selector (runtime-rendered from the offered pair —
a single EN button while only English ships).

Rebased onto current main, where the extraction follows the module
splits: the shell wiring now lands in the owner modules
(panelChrome, visualSettings, locationNavigation, shareRestoration,
shellFeedback, applicationShell) and the voice status corpus in the
realtime* modules; scene status lives in director.js +
playbackAdapter.js.

Modules shared with the node runtime (loadingFeedback,
installationFeedback, regionalModel, keySetupCore, vessels ingestion)
stay environment-neutral English and localize at their browser render
sites (chip maps in shellFeedback/installations controls, the weather
table in cockpitBriefing, keySetupRequirementEnvVars compositions), so
the package-boundary graph stays clean; the browser boundary groups
now own the i18n modules they reach (scripts/package-boundaries.json).

src/layers/vessels/queries.js

@@ -1,11 +1,27 @@
 import * as Cesium from 'cesium';
+import { t } from '../../i18n/index.js';
+
+// The vessels ingestion owner is a portable module graph (it also runs in the
+// server-side source builds), so it writes stable English feed labels into
+// state. Localize those known labels here, at the presentation read; anything
+// else (a bespoke manager label) passes through verbatim.
+const FEED_STATE_LABEL_KEYS = Object.freeze({
+  'refreshing...': 'layers.meta.refreshing',
+  'loading...': 'layers.meta.loading',
+  'awaiting first AIS position…': 'layers.vessel.awaitingFirstPosition',
+});
+
+function localizeFeedLabel(raw) {
+  if (typeof raw !== 'string' || !raw.trim()) return raw;
+  const key = FEED_STATE_LABEL_KEYS[raw.trim()];
+  return key ? t(key) : raw;
+}
 import {
   AIS_DEGRADED_STATUSES,
   AIS_HEALTHY_STATUSES,
   AIS_STATUS_REASON,
   REFRESH_MS,
   FOCUS_EVIDENCE_DEV,
-  AIS_FIRST_CONNECT_LABEL,
 } from './policy.js';
 
 export function createQueries({
@@ -82,8 +98,8 @@ export function createQueries({
     if (acceptedRowCount > 0) return null; // accepted rows may be stale while reconnecting, but remain usable
     if (AIS_HEALTHY_STATUSES.has(status)) {
       return payload?.lastMessageAt
-        ? 'awaiting usable AIS positions…'
-        : 'awaiting first AIS message…';
+        ? t('layers.vessel.awaitingPositions')
+        : t('layers.vessel.awaitingFirstMessage');
     }
     if (!status) return null;
     const detail =
@@ -132,7 +148,7 @@ export function createQueries({
       acceptedRowCount,
       error:
         deriveAisFeedError(payload, acceptedRowCount) ||
-        (acceptedRowCount === 0 ? 'awaiting usable AIS positions…' : null),
+        (acceptedRowCount === 0 ? t('layers.vessel.awaitingPositions') : null),
     };
   }
 
@@ -504,8 +520,8 @@ export function createQueries({
         lastUpdate: state.feed.lastUpdate,
         loading: state.feed.loading || waitingForFirstPosition,
         loadingLabel: waitingForFirstPosition
-          ? AIS_FIRST_CONNECT_LABEL
-          : state.feed.loadingLabel,
+          ? t('layers.vessel.awaitingFirstPosition')
+          : localizeFeedLabel(state.feed.loadingLabel),
         error: state.feed.error,
         stale: state.feed.stale,
         partial: state.feed.partial,