i18n(ja): apply review round 2

Catalog fixes from the second review round (squawk 7600/7700 names,
transit occupancy, radio category, cyclone advisory wording, Orbital Watch,
validation and hint texts), cockpit distances keep "km" in Japanese as in
Chinese, the CCTV context line uses the translated view band, and the
Japanese layer status line no longer splits "1分以内".

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

src/ui/cockpitContext.js

@@ -1,6 +1,6 @@
 /** Contact readouts and nearby-signal presentation for the Cockpit controller. */
 import * as Cesium from 'cesium';
-import { formatNumber, getLocale, t, tn } from '../i18n/index.js';
+import { formatNumber, t, tn } from '../i18n/index.js';
 import { unitLabel } from './unitLabels.js';
 import {
   bearingBetweenCoordinates,
@@ -8,14 +8,17 @@ import {
   relativeBearing,
   resolveCockpitContextReadout,
 } from '../cockpitMath.js';
-import { formatCockpitDistance } from './cockpitPresentation.js';
+import {
+  cockpitUnitCase,
+  formatCockpitDistance,
+} from './cockpitPresentation.js';
 
 /** The Context scope line in the active language (see cockpitMath.js). */
 const LOCALIZED_CONTEXT_SCOPE = Object.freeze({
   window: ({ label, radiusKm }) =>
     t('{label} · {radius} AIR/SEA WINDOW', {
       label,
-      radius: `${radiusKm === null ? '—' : formatNumber(radiusKm)}\u00a0${getLocale().startsWith('zh-') ? unitLabel('km') : unitLabel('km').toUpperCase()}`,
+      radius: `${radiusKm === null ? '—' : formatNumber(radiusKm)}\u00a0${cockpitUnitCase(unitLabel('km'))}`,
     }),
   installations: ({ scope, coverage }) =>
     t('{scope} · INSTALLATIONS {coverage}', { scope, coverage }),

src/ui/cockpitPresentation.js

@@ -149,7 +149,15 @@ export function formatCockpitDistance(distanceM) {
     minimumFractionDigits: digits,
     maximumFractionDigits: digits,
   });
-  return getLocale().startsWith('zh-') ? distance : distance.toUpperCase();
+  return cockpitUnitCase(distance);
+}
+
+/**
+ * Upper-case a cockpit unit the HUD way (`9.5 KM`), except in Chinese and
+ * Japanese, which have no case and keep units as the catalog writes them.
+ */
+export function cockpitUnitCase(text) {
+  return /^(zh|ja)(-|$)/.test(getLocale()) ? text : text.toUpperCase();
 }
 
 export function formatCockpitWindDirection(value) {

src/ui/styles/cjk.css

@@ -69,3 +69,11 @@ html:lang(ja) .recent-imagery-readout .ri-slot-value {
   word-break: keep-all;
   overflow-wrap: break-word;
 }
+
+/* Japanese layer status lines wrap at their spaces and · separators, so an
+   age such as 1分以内 stays whole (更新 1 / 分以内); a run too long for the
+   line still breaks. */
+html:lang(ja) .data-toggle-meta {
+  word-break: keep-all;
+  overflow-wrap: break-word;
+}