sync from local backup

_verify.cjs

@@ -0,0 +1,16 @@
+const fs = require("fs");
+const path = require("path");
+const base = path.resolve(__dirname, "src/locales");
+let ok = true;
+for (const f of ["zh.json", "en.json", "ja.json", "ko.json", "zh-TW.json", "ru.json"]) {
+  let s = fs.readFileSync(path.join(base, f), "utf8");
+  if (s.charCodeAt(0) === 0xfeff) s = s.slice(1);
+  try {
+    const o = JSON.parse(s);
+    console.log(f, "OK", "dateCalculator=" + (!!o.dateCalculator));
+  } catch (e) {
+    ok = false;
+    console.log(f, "FAIL", e.message);
+  }
+}
+process.exit(ok ? 0 : 1);