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]>

src/sdr/controller.js

@@ -17,7 +17,7 @@ import {
   selectAuthorizedSdrDevice,
 } from './usbDevices.js';
 import { summarizeLocalAdsb } from '../sources/adsbRecords.js';
-import { t } from '../i18n/index.js';
+import { formatNumber, t } from '../i18n/index.js';
 
 export { createRememberingWebUsb } from './usbDevices.js';
 
@@ -1170,7 +1170,7 @@ export class SdrController {
           ? {}
           : {
               message: t('Tuned to {mhz} MHz FM', {
-                mhz: (frequency / 1_000_000).toFixed(1),
+                mhz: formatMhz(frequency),
               }),
             }),
       });
@@ -1206,7 +1206,7 @@ export class SdrController {
     const token = ++this._seekToken;
     this._setState({
       seeking: true,
-      seekMessage: `Seeking ${seekDirection > 0 ? 'up' : 'down'}…`,
+      seekMessage: seekDirection > 0 ? t('Seeking up…') : t('Seeking down…'),
     });
     this._audioNode?.port.postMessage({ type: 'volume', value: 0 });
     try {
@@ -1217,7 +1217,7 @@ export class SdrController {
         const sequence = this._spectrumSequence;
         await this.tuneFm(center, { quiet: true });
         this._setState({
-          seekMessage: `Scanning ${(center / 1_000_000).toFixed(1)} MHz…`,
+          seekMessage: t('Scanning {mhz} MHz…', { mhz: formatMhz(center) }),
         });
         if (
           !(await this._waitForSpectrum(sequence)) ||
@@ -1235,9 +1235,12 @@ export class SdrController {
         await this.tuneFm(peak.frequency, { quiet: true });
         this._setState({
           seeking: false,
-          seekMessage: `Found ${(peak.frequency / 1_000_000).toFixed(1)} MHz · ${peak.snr.toFixed(1)} dB`,
+          seekMessage: t('Found {mhz} MHz · {snr} dB', {
+            mhz: formatMhz(peak.frequency),
+            snr: formatOneDecimal(peak.snr),
+          }),
           message: t('FM signal found at {mhz} MHz', {
-            mhz: (peak.frequency / 1_000_000).toFixed(1),
+            mhz: formatMhz(peak.frequency),
           }),
         });
         return peak;
@@ -1371,6 +1374,19 @@ export class SdrController {
   }
 }
 
+/** One decimal in the UI language ("98.5" / "98,5"); status text only. */
+function formatOneDecimal(value) {
+  return formatNumber(value, {
+    minimumFractionDigits: 1,
+    maximumFractionDigits: 1,
+    useGrouping: false,
+  });
+}
+
+function formatMhz(hz) {
+  return formatOneDecimal(hz / 1_000_000);
+}
+
 function positiveModulo(value, divisor) {
   return ((value % divisor) + divisor) % divisor;
 }

src/sdr/sdrSeekLocalized.test.mjs

@@ -0,0 +1,58 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { setLocale } from '../i18n/index.js';
+import { SdrController } from './controller.js';
+import { localSdrCardView } from '../ui/localSdrPresentation.js';
+
+function makeController() {
+  const c = new SdrController({ storage: null, webUsb: null });
+  c._device = {};
+  c.state.mode = 'fm';
+  const seen = [];
+  c.subscribe?.((s) => seen.push(localSdrCardView(s)));
+  c.tuneFm = async (f) => {
+    c.state.frequencyHz = f;
+    const sr = c.state.sampleRate;
+    const bins = new Float32Array(1024).fill(-80);
+    const target = 98_800_000;
+    const idx = Math.round((target - f) / (sr / 1024) + 512);
+    for (let i = idx - 20; i <= idx + 20; i++)
+      if (i >= 0 && i < 1024) bins[i] = -10;
+    c._spectrum = bins;
+    return true;
+  };
+  c._waitForSpectrum = async () => true;
+  c.state.frequencyHz = 98_500_000;
+  return { c, seen };
+}
+
+for (const locale of ['es', 'ru']) {
+  test(`FM seek messages are localized in ${locale}`, async () => {
+    setLocale(locale);
+    try {
+      const { c, seen } = makeController();
+      const peak = await c.seekFm(1);
+      assert.ok(peak, 'synthetic peak found');
+      const texts = seen.map((view) => view.statusText);
+      // Every status line shown during and after the seek is in the UI language.
+      for (const text of texts) {
+        assert.doesNotMatch(text, /Seeking (up|down)|Scanning \d|Found \d/);
+      }
+      // Decimal separator follows the locale (98,8 in es and ru).
+      assert.match(texts.at(-1), /98,8/);
+    } finally {
+      setLocale('en');
+    }
+  });
+}
+
+test('FM seek messages keep their English wording and decimal point', async () => {
+  setLocale('en');
+  const { c, seen } = makeController();
+  const peak = await c.seekFm(1);
+  assert.ok(peak, 'synthetic peak found');
+  const texts = seen.map((view) => view.statusText);
+  assert.ok(texts.includes('Seeking up…'));
+  assert.ok(texts.includes('Scanning 98.5 MHz…'));
+  assert.match(texts.at(-1), /^Found 98\.8 MHz · \d+\.\d dB$/);
+});