feat(extension): implement full dynamic i18n support and automated consistency checks

scripts/test-locales.js

@@ -0,0 +1,55 @@
+const fs = require('fs');
+const path = require('path');
+
+const localesDir = path.join(__dirname, '..', 'extension', 'locales');
+const enPath = path.join(localesDir, 'en.json');
+
+if (!fs.existsSync(enPath)) {
+  console.error('CRITICAL: en.json is missing!');
+  process.exit(1);
+}
+
+const enDict = JSON.parse(fs.readFileSync(enPath, 'utf8'));
+const enKeys = Object.keys(enDict);
+
+const localeFiles = fs.readdirSync(localesDir).filter(file => file.endsWith('.json') && file !== 'en.json');
+
+let hasError = false;
+
+console.log(`Auditing i18n locales using ${enKeys.length} baseline keys from en.json...\n`);
+
+for (const file of localeFiles) {
+  const filePath = path.join(localesDir, file);
+  try {
+    const dict = JSON.parse(fs.readFileSync(filePath, 'utf8'));
+    const keys = Object.keys(dict);
+
+    const missingKeys = enKeys.filter(k => !keys.includes(k));
+    const extraKeys = keys.filter(k => !enKeys.includes(k));
+
+    if (missingKeys.length > 0 || extraKeys.length > 0) {
+      hasError = true;
+      console.error(`❌ ${file} has inconsistencies:`);
+      if (missingKeys.length > 0) {
+        console.error(`  Missing keys (${missingKeys.length}):`, missingKeys);
+      }
+      if (extraKeys.length > 0) {
+        console.error(`  Extra keys (${extraKeys.length}):`, extraKeys);
+      }
+    } else {
+      console.log(`✓ ${file} is fully consistent (matches all keys).`);
+    }
+  } catch (err) {
+    hasError = true;
+    console.error(`❌ Failed to parse ${file}:`, err.message);
+  }
+}
+
+console.log('');
+if (hasError) {
+  console.error('❌ Locale consistency check failed! Please fix the errors listed above.');
+  process.exit(1);
+} else {
+  console.log('🎉 All locale files are perfectly synchronized and consistent!');
+  process.exit(0);
+}