feat: improve profile navigation and responsive privacy UX

tests/digits.test.mjs

@@ -0,0 +1,11 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { toEnglishDigits } from "../src/lib/digits.ts";
+
+test("normalizes Persian and Arabic-Indic digits to English digits", () => {
+  assert.equal(toEnglishDigits("۱۴۰۱ ١٢٣ 456"), "1401 123 456");
+});
+
+test("keeps non-digit characters unchanged", () => {
+  assert.equal(toEnglishDigits("۰۹۳۸-abc"), "0938-abc");
+});