fix: synchronize runtime locales and harden online updates

Translate UI, scheduler, validation, preload and maintenance messages dynamically, and propagate locale changes between workers. Harden update checks, downloads and terminal states, verify Debian pnpm, and ignore generated test artifacts.

test/front/editor-locale.test.cjs

@@ -0,0 +1,34 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const load = require('../helpers/load-security-module.cjs');
+for (const [locale, expected] of [
+  ['en', 'i-default'],
+  ['zh', 'zh-cn'],
+])
+  test(`Monaco uses the matching bundled locale for ${locale}`, () => {
+    let options;
+    const { init } = load('src/utils/init.ts', {
+      '@monaco-editor/react': {
+        loader: {
+          config: (value) => {
+            options = value;
+          },
+        },
+      },
+      './config': { baseUrl: '/panel/' },
+      'react-intl-universal': {
+        getInitOptions: () => ({ currentLocale: locale }),
+      },
+    });
+    init('2.23.0');
+    assert.equal(options.paths.vs, '/panel/monaco-editor/min/vs');
+    assert.equal(options['vs/nls'].availableLanguages['*'], expected);
+    const fs = require('node:fs');
+    assert.ok(
+      fs.existsSync(
+        'node_modules/monaco-editor/min/vs/editor/editor.main.nls' +
+          (expected === 'i-default' ? '' : '.' + expected) +
+          '.js',
+      ),
+    );
+  });