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/ui/locationNavigation.js

@@ -1,4 +1,5 @@
 import * as Cesium from 'cesium';
+import { t } from '../i18n/index.js';
 import { createStateChannel } from '../app/stateChannel.js';
 import { LocationControls } from './location.js';
 
@@ -87,8 +88,10 @@ export class LocationNavigation {
       this._currentPoi = null;
       this._collapsePOIRow();
       this._updateLocationMiniStatus();
-    } else if (change.type === 'missing') this._showToast('Location not found');
-    else if (change.type === 'failed') this._showToast('Search failed');
+    } else if (change.type === 'missing')
+      this._showToast(t('cockpit.location.toastNotFound'));
+    else if (change.type === 'failed')
+      this._showToast(t('cockpit.location.toastSearchFailed'));
     else if (change.type === 'settled')
       this._settleLocationSearchUi(change.generation);
     else if (
@@ -277,7 +280,7 @@ export class LocationNavigation {
 
   _toggleOrbit() {
     if (!this._currentTarget) {
-      this._showToast('Fly to a POI first');
+      this._showToast(t('cockpit.location.toastFlyToPoiFirst'));
       return;
     }
 
@@ -379,11 +382,11 @@ export class LocationNavigation {
       };
       this._resetGlobeBtn?.setAttribute(
         'aria-label',
-        'Reset to full globe view',
+        t('cockpit.hud.resetGlobeAria'),
       );
       this._cockpitResetGlobeBtn?.setAttribute(
         'aria-label',
-        'Reset cockpit to full globe view',
+        t('cockpit.hud.resetGlobeCockpitAria'),
       );
       this._globeResetPromise = null;
       this._cancelGlobeReset = null;
@@ -399,11 +402,11 @@ export class LocationNavigation {
     }, 4200);
     this._resetGlobeBtn?.setAttribute(
       'aria-label',
-      'Resetting to full globe view',
+      t('cockpit.hud.resettingGlobeAria'),
     );
     this._cockpitResetGlobeBtn?.setAttribute(
       'aria-label',
-      'Resetting cockpit to full globe view',
+      t('cockpit.hud.resettingGlobeCockpitAria'),
     );
     const target = flyToGlobeView(this.viewer, {
       onComplete: () => finish(false),